locals.tf

A Transaction Is a Point in Time

Sat, 24 Oct 2026 00:00:00 +0300

A Transaction Is a Point in Time
#

The key-value store under the cluster had passed every functional test I had, and it had a bug that no functional test could have found: its transactions were not transactions. They were sequences. A reader who asked for a revision in the middle of one got half of it. This is the design of the repair — including the two places where my mental model of etcd turned out to be simply wrong until I measured it.

The Differential: Fourteen Ways a Key-Value Store Lied to Kubernetes

Sat, 24 Oct 2026 00:00:00 +0300

The Differential: Fourteen Ways a Key-Value Store Lied to Kubernetes
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Over the last few days I replaced “does the store work?” with “does the store agree with etcd?”, operation by operation. The answer was no in fourteen places. One of them was a single request that aborted the control plane’s datastore. Several were invisible to every test the project had. Two were actively defended by tests that asserted the wrong behaviour. This is the method and the ledger.

A Point Is Not a Prefix: The Life and Times of a Four-Month-Old Bug

Thu, 22 Oct 2026 00:00:00 +0300

A Point Is Not a Prefix: The Life and Times of a Four-Month-Old Bug
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In the previous post I chased a Kubernetes control plane that was burning a core in one-minute bursts. The proximate cause turned out to be an infinite retry loop, and the loop turned out to be caused by a store returning the wrong object for a lookup. This is the part of that story I had to dig for: which commit introduced the wrong object, why a regression test was written for exactly this and still didn’t catch it, and how a second test ended up asserting the bug as a feature.

The Two-Minute Loop: Hunting a Control Plane That Never Sleeps

Thu, 22 Oct 2026 00:00:00 +0300

The Two-Minute Loop: Hunting a Control Plane That Never Sleeps
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A single-node Kubernetes control plane was showing up as the busiest process on an otherwise idle machine. The interesting part wasn’t the CPU number — it was that three independent metric families disagreed with each other by three orders of magnitude, the log line that looked like the cause meant the exact opposite of what it appeared to mean, and the reconciler responsible wasn’t even in the repository named on the container image.

Trading Week 2026-10-18

Sun, 18 Oct 2026 18:00:00 +0200

Weekly Trading Analysis – Week Ending 2026-10-18
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1. Weekly Summary
#

Metric	Current Week	Last Week	Change ($)	Change (%)
Total Portfolio Value	$285,485.12	$289,697.84	-$4,212.72	-1.45%
IBKR Portfolio Market Value	$81,780	$84,230	-$2,450	-2.91%
Binance Portfolio Value (USDC)	$203,705.12	$205,467.84	-$1,762.72	-0.86%
IBKR Buying Power	$449,300	$460,900	-$11,600	-2.52%
IBKR Unrealized P&L	-$17,600	-$16,800	-$800	—
IBKR Total Cash	$46,900	$59,100	-$12,200	-20.64%
Binance EUR Value	€181,486.72	€183,569.61	-€2,082.89	-1.13%

Overall P&L: total portfolio declined $4,212.72 (-1.45%). IBKR unrealized P&L worsened by $800 to -$17,600. Binance floating P&L is only partially reported (EURI +$10.49, G —, others NA).

Trading Week 2026-10-11

Sun, 11 Oct 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending 2026-10-11
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1. Weekly Summary
#

Metric	Current Week	Last Week	Change ($)	Change (%)
Total Portfolio Value (USD)	$289,697.84	$294,468.90	-$4,771.06	-1.62%
IBKR Portfolio Value	$84,230	$82,860	+$1,370	+1.65%
Binance Portfolio Value (USDC)	$205,467.84	$211,608.90	-$6,141.06	-2.90%
IBKR Buying Power	$460,900	$445,700	+$15,200	+3.41%
IBKR Unrealized P&L	-$16,800	-$17,630	+$830	+4.71%
IBKR Total Cash	$59,100	$57,400	+$1,700	+2.96%

Note: Binance EUR value also declined from €187,965.51 to €183,569.61 (-€4,395.90, -2.34%).

The Turing Machine Is Not a CPU: OpenAI's n log n Multiplication on AVX2

Sun, 11 Oct 2026 02:00:00 +0300

The Turing Machine Is Not a CPU: OpenAI’s n log n Multiplication on AVX2
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The previous post mined the constants out of OpenAI’s “integer multiplication below n log n” proof. But that proof is a statement about a multitape Turing machine. Real machines are out-of-order x64 cores with 256-bit SIMD, port-limited execution units, and a deep cache hierarchy. I took the paper’s primitives, built them on AVX2, and measured what actually survives the translation — and what doesn’t.

Integer Multiplication Below n log n: Mining the Constants, and Why the Real Saving Is Cubic

Sun, 11 Oct 2026 00:00:00 +0300

Integer Multiplication Below `n log n`: Mining the Constants, and Why the Real Saving Is Cubic
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OpenAI’s October 2026 mathematics release contains a proof that two n-bit integers can be multiplied below n log n on a fixed-tape Turing machine. The proof works, but its constants are so conservative that roughly 2^62 of the improvement is lying on the table for free. Pulling the paper apart, the interesting story is that the final exponent is a product of three coupled slacks, and the one number that actually controls everything — the rank deficit of a finite linear network — is only ~1.5×10⁻¹¹. It gets cubed.

Trading Week 2026-10-05

Mon, 05 Oct 2026 18:00:00 +0200

Weekly Summary
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Metric	Current Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Market Value	$82,860	$83,170	-$310	-0.37%
Binance Portfolio Value	$211,608.90	$211,416.74	+$192.16	+0.09%
Total Portfolio Value	$294,468.90	$294,586.74	-$117.84	-0.04%
IBKR Unrealized P&L	-$17,630	-$16,080	-$1,550	-9.64%
Buying Power	$445,700	$442,600	+$3,100	+0.70%
Total Cash	$57,400	$56,800	+$600	+1.06%
Binance Today’s PNL	+$534.82	n/a	n/a	n/a

Open Positions
#

IBKR Positions
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Symbol	Quantity	Cost Basis	Market Value	Unrealized P&L
ATOS	80 (0)	$3,542 (0)	$184.00 (+$32.80)	-$3,358 (+$33)
BLZE	100 (0)	$2,271 (0)	$1,440 (+$106)	-$831.16 (+$106.00)
BLZE OCT 16 ‘26 12.5 Put	-5 (0)	-$521.56 (0)	-$129.73 (+$195.27)	+$391.83 (+$195.27)
PSFE	50 (0)	$2,992 (0)	$269.50 (-$52.00)	-$2,723 (-$52.00)
SPCX Oct 125/140 Bull Call	-5 (0)	-$6,053 (0)	-$7,327 (-$981.00)	-$1,274 (-$980.48)
UBER	500 (0)	$46,048 (0)	$34,005 (-$825.00)	-$12,043 (-$825.00)

Binance Positions
#

Symbol	Quantity	Cost Basis	Market Value	Floating P&L
RWUSD	131,581.7019959 (+91.05276736)	—	$131,591.31 (+$100.65)	n/a
WBETH	26.32907119 (0)	—	$78,843.45 (+$140.55)	n/a
GRAM	510.66351529 (+0.09792421)	—	$783.81 (-$33.50)	n/a
EURI	261.8283916705 (+0.0562040351)	—	$294.38 (-$3.58)	+$10.70 (+3.78%) vs +$14.84 (+5.24%)
G	16,089.787107 (0)	—	$76.74 (-$11.58)	n/a (last week -$495.75 / -84.88%)
CATI	190.34564294 (0)	—	$12.38 (-$0.13)	n/a

Positions Entered This Week
#

No new positions were opened this week.

Recovering a Tuya Local Key Without the Cloud (and Reimplementing the App API)

Sat, 03 Oct 2026 00:00:00 +0300

Recovering a Tuya Local Key Without the Cloud (and Reimplementing the App API)
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Introduction
#

I run most of my smart-home gear locally. A Tuya-based garden watering controller sits on my LAN, exposes the usual 6668/tcp local protocol, and is driven from Home Assistant through the localtuya custom integration. It has been rock solid for months — until one day it wasn’t:

Trading Week 2026-09-27

Sun, 27 Sep 2026 18:00:00 +0200

Weekly Trading Analysis — Week Ending 2026-09-27
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1. Weekly Summary
#

Metric	Current	Last Week	Change ($)	Change (%)
Total Portfolio Value	$294,586.74	$291,926.36	+$2,660.38	+0.91%
IBKR Portfolio Value	$83,170	$82,800	+$370	+0.45%
Binance Portfolio Value	$211,416.74	$209,126.36	+$2,290.38	+1.10%
IBKR Unrealized P&L	-$16,080	-$15,610	-$470	-3.01%
Binance Known Floating P&L*	-$480.91	-$443.32	-$37.59	-8.48%
Total Known Unrealized P&L*	-$16,560.91	-$16,053.32	-$507.59	-3.16%
Buying Power (IBKR)	$442,600	$440,000	+$2,600	+0.59%
Total Cash (IBKR)	$56,800	$56,300	+$500	+0.89%

*Binance floating P&L is only available for EURI and G. RWUSD, WBETH, GRAM, and CATI do not report P&L.

Trading Week 2026-09-20

Sun, 20 Sep 2026 18:00:00 +0200

Weekly Trading Analysis — Week Ending 2026-09-20
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1. Weekly Summary
#

Metric	Current	Last Week	Change ($)	Change (%)
Total Portfolio Value	$291,926.36	$283,931.08	+$7,995.28	+2.82%
IBKR Portfolio Market Value	$82,800	$79,240	+$3,560	+4.49%
Binance Portfolio Value (USDC)	$209,126.36	$204,691.08	+$4,435.28	+2.17%
IBKR Buying Power	$440,000	$416,300	+$23,700	+5.69%
IBKR Unrealized P&L	-$15,610	-$21,360	+$5,750	+26.92%
IBKR Total Cash	$56,300	$56,400	-$100	-0.18%
Binance Daily P&L (Sep 20)	+$5,350.78 (+2.63%)	+$250.02 (+0.12%)	+$5,100.76	—

Note: Binance floating P&L is only partially reported; many crypto positions show n/a cost basis.

The Centre Held: From a Silent Boot to 9.9 Gbit/s and a Safer Jumbo Path

Sat, 19 Sep 2026 23:59:00 +0300

The Centre Held: From a Silent Boot to 9.9 Gbit/s and a Safer Jumbo Path
#

Things fall apart; the centre cannot hold; Mere anarchy is loosed upon the world, — W. B. Yeats, The Second Coming

Six days ago I published the story of a hand-ported RSS series that built clean and then refused to boot — init_module called, never returned, CPU pinned, five RCU stalls, watchdog reset. I ended it mid-investigation: the hang localised (by a wave of pr_err markers) to a two-line window, a false suspect (the DIM rewrite) ruled out, the next boot ready to name its sentence.

Trading Week 2026-09-13

Sun, 13 Sep 2026 18:00:00 +0200

Weekly Trading Analysis — Week Ending 2026-09-13
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1. Weekly Summary
#

Metric	Current Week	Last Week	Change ($)	Change (%)
Total Portfolio Value (USD)	$283,931.08	$285,232.06	-$1,300.98	-0.46%
IBKR Portfolio Market Value	$79,240	$81,420	-$2,180	-2.68%
Binance Portfolio Value (USDC)	$204,691.08	$203,812.06	+$879.02	+0.43%
IBKR Buying Power	$416,300	$448,400	-$32,100	-7.16%
IBKR Unrealized P&L	-$21,360	-$17,030	-$4,330	-25.43%
Binance Floating P&L (excl. NA)	$72,422.88	$71,707.42	+$715.46	+1.00%
Combined Unrealized P&L	$51,062.88	$54,677.42	-$3,614.54	-6.61%
IBKR Total Cash	$56,400	$56,300	+$100	+0.18%

Notes: Binance P&L for RWUSD is NA; combined P&L excludes RWUSD. Some Binance P&L percentages show -- or -100% due to missing cost basis; values are shown as reported.

The Center Cannot Hold: Porting RSS to a Router That Hangs at Boot

Sun, 13 Sep 2026 00:00:00 +0300

The Center Cannot Hold: Porting RSS to a Router That Hangs at Boot
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Things fall apart; the centre cannot hold; Mere anarchy is loosed upon the world, — W. B. Yeats, The Second Coming

This is the story of a single kernel driver, ported by hand onto a stable tree, that builds perfectly and then refuses to boot. Not a compile error, not a link error — a hard hang, forty seconds deep in module loading, with not a single line of driver output before the machine goes catatonic. And the fix wasn’t where I first looked.

Trading Week 2026-09-06

Sun, 06 Sep 2026 18:00:00 +0200

Weekly Trading Analysis – Week Ending 2026-09-06
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1. Weekly Summary
#

Metric	Current Week	Last Week	Change ($)	Change (%)
Total Portfolio Value (USD)	$285,232.06	$286,549.66	-$1,317.60	-0.46%
IBKR Portfolio Market Value	$81,420	$83,500	-$2,080	-2.49%
Binance Portfolio Value (USDC)	$203,812.06	$203,049.66	+$762.40	+0.38%
IBKR Unrealized P&L	-$17,030	-$15,320	-$1,710	-11.16%
Binance Floating P&L (excl. RWUSD)	+$71,707.42	+$70,976.37	+$731.05	+1.03%
Overall Unrealized P&L	+$54,677.42	+$55,656.37	-$978.95	-1.76%
IBKR Buying Power	$448,400	$456,500	-$8,100	-1.77%
IBKR Total Cash	$56,300	$56,400	-$100	-0.18%

Notes: Total portfolio value is calculated using IBKR market value (USD) plus Binance total value in USDC. Binance EUR value was approximately €175,431.01 this week and €175,316.73 last week. Binance cost basis data is not provided; floating P&L is shown as reported. RWUSD floating P&L is not available.

Trading Week 2026-08-30

Sun, 30 Aug 2026 18:00:00 +0200

Weekly Trading Analysis — Week Ending 2026-08-30
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1. Weekly Summary
#

Metric	Current (2026-08-30)	Last Week (2026-08-23)	Change ($)	Change (%)
IBKR Portfolio Value	$83,500.00	$82,920.00	+$580.00	+0.70%
Binance Portfolio Value (USDC)	$203,049.66	$202,930.02	+$119.64	+0.06%
Total Portfolio Value	$286,549.66	$285,850.02	+$699.64	+0.24%
IBKR Buying Power	$456,500.00	$455,200.00	+$1,300.00	+0.29%
IBKR Unrealized P&L	-$15,320.00	-$14,870.00	-$450.00	-3.03%

IBKR cash: USD cash unchanged at $65,700; EUR cash unchanged at -€410.74; total cash increased from $55,900 to $56,400 (+$500).

Defeating AWS WAF Challenges in Pure Node.js (No Browser)

Mon, 24 Aug 2026 00:00:00 +0300

Defeating AWS WAF Challenges in Pure Node.js (No Browser)
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Introduction
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I have a small CLI called goodread that tracks my reading progress on Goodreads: ./goodread set pendulum 81 matches a currently-reading book by title fragment and POSTs a new percentage to one of Goodreads’ private web endpoints, authenticated with a cookie string copied out of my browser. It worked for months.

Trading Week 2026-08-23

Sun, 23 Aug 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending 2026-08-23
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Weekly Summary
#

Metric	Last Week (2026-08-16)	Current (2026-08-23)	Change ($)	Change (%)
Total Portfolio Value	$270.15K	$285.85K	+$15.70K	+5.81%
IBKR Portfolio Value	$83.57K	$82.92K	-$0.65K	-0.78%
Binance Portfolio Value	$186.58K	$202.93K	+$16.35K	+8.76%
IBKR Cash Balance	$56.2K	$55.9K	-$0.3K	-0.53%
IBKR Unrealized P&L	-$14.51K	-$14.87K	-$0.36K	-2.48%
Binance Today’s PNL	-$48.41	+$3,284.49	+$3,332.90	—

Overall: Portfolio value increased primarily due to strong performance in Binance holdings (especially WBETH) and a recovery in UBER stock. IBKR saw a slight decline from option losses, partially offset by gains in UBER and SPCX.

HA Not Supported: Rebuilding a Bitbucket DC Migration Export from REST Alone

Thu, 20 Aug 2026 20:38:00 +0300

TL;DR
#

The admins on a production Bitbucket Data Center said “HA is not supported, so we can’t run the official migration export.” That refusal was the entire motivation for hans: a tool that reconstructs a valid Bitbucket_export_<jobId>.tar using only read-only REST API access and git mirror clones — no admin privileges — such that GitHub Enterprise Importer (gh bbs2gh migrate-repo --archive-path) accepts it. Correctness wasn’t assumed: every format claim was reverse-engineered from a real admin export of a scripted “golden” repo, then gated four ways. Along the way we hit (and solved) a licensing hellscape, an activity-schema mismatch, a 35-minute git-object unpack, a 100x Rust rewrite, a KeyError: 'commit' crash on a real 10,031-PR repo caused by stacked PRs. Final state: all gates PASS, git SHAs migrated byte-identical, and the tool produced a 30,105-entry archive for a real 10K-PR production repo.

A Clock 4 Minutes Behind: Rolling NTP Time Sync Across the Home LAN

Thu, 20 Aug 2026 20:15:00 +0300

TL;DR
#

A headless Debian box was ~4 minutes behind real time, and nothing on it was syncing — no NTP, no chrony, no systemd-timesyncd. The obvious fix was just to turn one of them on, but that opened a bigger question: with a LAN full of Debian boxes, why not have one accurate box serve time to the rest? I installed chrony on the server (changwang, 10.222.1.22), configured it to serve the 10.222.1.0/24 LAN, then installed chrony as a client on two other machines (precision and odroid at 10.222.1.40), pointing them at changwang and disabling their old systemd-timesyncd. All three now sync from changwang, which itself syncs from the NTP pool. The clock is back to ~1 ms of real time instead of 4 minutes off.

The SSH Reset That Wasn't the ISP: A Router Flowtable Ghost Story

Mon, 17 Aug 2026 21:20:00 +0300

TL;DR
#

Every SSH handshake from a LAN host through my OpenWrt router died the moment the key exchange began — GitHub, GitLab, legacy kex algorithms, even SSH-over-443. Plain TCP to port 22 connected fine and HTTPS worked perfectly. Packet captures initially screamed “ISP deep-packet-inspection is forging RSTs.” Adding MAC-address capture flipped the diagnosis: the killer RST carried the router’s own WAN MAC address, meaning the router generated it itself. The culprit was the vendor’s software nftables flowtable (flow add @f in the forward hook), which offloaded NAT’d SSH flows and then lost their state mid-KEX, causing the kernel to answer GitHub’s final key-exchange packet with an RFC-793 reset — as if nothing was listening on :57700. The router’s own SSH always worked because it never crosses the forward path. Removing the flowtable offload fixed it instantly, 3-for-3.

Trading Week 2026-08-16

Sun, 16 Aug 2026 18:00:00 +0200

Weekly Trading Analysis — Week Ending 2026-08-16
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1. Weekly Summary
#

Total portfolio value slipped to $270,152.35 from $271,416.71, a decrease of -$1,264.36 (-0.47%) week-over-week. IBKR and Binance both declined; Binance accounted for most of the move.

Portfolio Value by Account
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Account	Current Value	Last Week	Change ($)	Change (%)
IBKR	$83,570.00	$83,850.00	-$280.00	-0.33%
Binance (USDC)	$186,582.35	$187,566.71	-$984.36	-0.52%
Total	$270,152.35	$271,416.71	-$1,264.36	-0.47%

Account Metrics
#

Metric	Current	Last Week	Change
IBKR Buying Power	$454,800	$456,900	-$2,100
IBKR Unrealized P&L	-$14,510	-$14,230	-$280
IBKR Total Cash	$56,200	$53,200	+$3,000
Binance Today’s P&L	-$48.41	+$10.40	-$58.81

Cash figures are as reported in the screenshots; some values are rounded from K-display.

Roswell, Majestic-12, and the Transistor: A Skeptic Deep Dive into Reverse Engineering Theory

Sun, 16 Aug 2026 15:45:00 +0200

TL;DR
#

If a crashed UFO were genuinely recovered in July 1947 — per the Majestic-12 legend — and reverse-engineered, could its technology explain the transistor’s December 1947 breakthrough? The timeline does overlap. But the transistor has a complete, continuous, and dated documentary lineage that independently explains its timing — and more importantly, the transistor is the wrong kind of technology to trace to a crash. This post walks through the full timeline, the evidence, and the epistemological lessons.

Chasing a Laggy MX Master 3 on a Passively Cooled ODROID-H2

Sun, 16 Aug 2026 15:35:00 +0300

TL;DR
#

My Logitech MX Master 3 felt laggy on a passively cooled ODROID-H2 running KDE Plasma on Wayland. A layer-by-layer diagnosis over SSH ruled out the mouse, the receiver, and the whole USB path; the input stream was rock solid at 125 Hz. The culprits turned out to be transient 2.4 GHz RF interference from a flaky Bluetooth radio (fixed) and compositor latency on a very weak Intel UHD 600 iGPU (mitigated). Then I went shopping for a Noctua fan and found that picking one for this board is an adventure in 5V headers and 1.25mm pitch connectors.

Trading Week 2026-08-09

Sun, 09 Aug 2026 18:00:00 +0200

Weekly Trading Analysis — Week Ending 2026-08-09
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Weekly Summary
#

Portfolio value rose week-over-week, helped by an improvement in IBKR unrealized P&L and a modest gain in the Binance crypto book.

Metric	Current (2026-08-09)	Last Week (2026-08-02)	Change ($)	Change (%)
IBKR Portfolio Value	$83,850	$81,710	+$2,140	+2.62%
Binance Portfolio Value	$187,566.71	$186,069.60	+$1,497.11	+0.80%
Total Portfolio Value	$271,416.71	$267,779.60	+$3,637.11	+1.36%
IBKR Buying Power	$456,900	$452,100	+$4,800	+1.06%
IBKR Unrealized P&L	-$14,230	-$17,880	+$3,650	+20.41% improvement

Note: Totals use the reported account values. No external cash flows were disclosed in the source data.

Trading Week 2026-08-02

Sun, 02 Aug 2026 18:00:00 +0200

Weekly Summary
#

The combined portfolio ended the week ending 2026-08-02 at $267,779.60, up $979.51 (+0.37%) from $266,800.09 the prior week. IBKR contributed $81,710 and Binance (USDC) contributed $186,069.60.

Account	Current Value	Last Week	Change ($)	Change (%)
IBKR portfolio value	$81,710	$81,080	+$630	+0.78%
Binance portfolio value (USDC)	$186,069.60	$185,720.09	+$349.51	+0.19%
Total portfolio value	$267,779.60	$266,800.09	+$979.51	+0.37%

IBKR’s reported unrealized P&L improved from -$19.95K to -$17.88K. Binance’s EUR-denominated value fell from €163,382.31 to €161,516.33, so the USDC gain did not translate into EUR terms, reflecting EUR/USD weakness.

Trading Week 2026-07-26

Sun, 26 Jul 2026 18:00:00 +0200

Weekly Trading Analysis – Week Ending July 26, 2026
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1. Weekly Summary
#

The combined portfolio decreased by $1,378.75 (-0.51%) during the week, driven by equity losses in the IBKR account, while the Binance account posted a small gain.

Account	Last Week (Jul 19)	This Week (Jul 26)	Change ($)	Change (%)
IBKR	$82,890.00	$81,080.00	-$1,810.00	-2.18%
Binance	$185,288.84	$185,720.09	+$431.25	+0.23%
Total Portfolio	$268,178.84	$266,800.09	-$1,378.75	-0.51%

The IBKR portfolio unrealized P&L worsened from -$18,370 to -$19,950 (down $1,580), largely due to declines in UBER and TWLO.

Trading Week 2026-07-19

Sun, 19 Jul 2026 18:00:00 +0200

Weekly Trading Analysis
#

Week Ending 2026-07-19
#

Weekly Summary
#

Total portfolio value as of Friday 19 July 2026: $268,178.84, an increase of +$390.82 (+0.15%) from last week’s $267,788.02.

Account Breakdown
#

Account	Current Value	Last Week	Change ($)	Change (%)
IBKR	$82,890.00	$83,320.00	–$430.00	–0.52%
Binance	$185,288.84	$184,468.02	+$820.82	+0.44%
Total	$268,178.84	$267,788.02	+$390.82	+0.15%

Additional Metrics (IBKR)
#

Buying Power: $451.9K (last week $465K)
Unrealized P&L: –$18,370 (last week –$17,630), a loss of –$740
Realized Gain (UBER short call): +$726 (closed on 2026-07-17)

Open Positions – IBKR
#

Symbol / Description	Qty	Cost Basis	Market Value	Unrealized P&L	Mkt Val Change	P&L Change
ATOS	80	$3,542.00	$196.80	–$3,345.00	+$7.20	+$7.00
BLZE	100	$2,271.00	$1,280.00	–$990.70	–$494.00	–$493.09
BLZE Aug 21 20 Call (Short)	–1	–$154.60	–$57.67	+$96.92	+$155.56	+$155.55
PLTR Jul 17 145 Call	1	$921.05	$0.00	–$921.05	–$14.15	–$14.16
PSFE	50	$2,992.00	$407.50	–$2,585.00	+$4.00	+$4.00
TWLO	35	$10,711.00	$7,237.00	–$3,474.00	–$273.00	–$273.00
UBER	500	$46,048.00	$36,250.00	–$9,798.00	–$1,020.00	–$1,020.00

Note: The PLTR call expired out‑of‑the‑money; market value is $0. The BLZE short call gained value as BLZE stock declined.

Trading Week 2026-07-12

Sun, 12 Jul 2026 18:00:00 +0200

Weekly Trading Analysis: Week Ending 2026-07-12
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Weekly Summary
#

The combined portfolio value increased from $265,483.78 last week to $267,788.02, a gain of $2,304.24 (+0.87%). Both brokerages contributed positively.

Metric	Current	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$83,320.00	$82,600.00	+$720.00	+0.87%
Binance Portfolio Value	$184,468.02	$182,883.78	+$1,584.24	+0.87%
Total Portfolio Value	$267,788.02	$265,483.78	+$2,304.24	+0.87%
IBKR Unrealized P&L	-$17,630.00	-$18,010.00	+$380.00	+2.11%
Binance Floating P&L	-$54,636.41	-$56,074.06	+$1,437.65	+2.56%
IBKR Buying Power	$465,000	$462,500	+$2,500	+0.54%
IBKR Total Cash	$44,200	$44,000	+$200	+0.45%

No trades were executed during the period, so all changes are market-driven.

The Progress Request That Never Arrived: Debugging a Ghost in the Kubernetes Watch Pipeline

Mon, 06 Jul 2026 00:00:00 +0300

The Progress Request That Never Arrived
#

How two silent bugs in a Rust etcd-compatible KV store caused thousands of errors per minute in a near-idle k3s cluster — and the 14-hour investigation that found them.

Table of Contents
#

Background: The Idle Cluster That Wasn’t
#

A 30-pod k3s cluster running on Kudurru — a purpose-built etcd v3 gRPC server in Rust — was consuming ~35% of a CPU core on the control-plane node. For context, the previous kine+SQLite stack used 17% of a core, and Kudurru alone uses 0.10%. Something was very wrong.

Trading Week 2026-07-05

Sun, 05 Jul 2026 18:00:00 +0200

Weekly Trading Recap: July 5, 2026
#

1. Weekly Summary
#

Metric	Last Week	This Week	Change ($)	Change (%)
IBKR Portfolio MV	$72,320	$82,600	+$10,280	+14.21%
IBKR Unrealized P&L	-$18,900	-$18,010	+$890	Improved (4.71%)
IBKR Buying Power	$396,800	$462,500	+$65,700	+16.56%
IBKR Total Cash	$34,200	$44,000	+$9,800	+28.65%
Binance Total Value	$177,450.58	$182,883.78	+$5,433.20	+3.06%
Overall Total	$249,770.58	$265,483.78	+$15,713.20	+6.29%

Note: On July 1, $11,290 in liquidity was injected into the IBKR account.

Trading Week 2026-06-28

Sun, 28 Jun 2026 18:00:00 +0200

Weekly Trading Analysis: June 22 - June 28, 2026
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$72,320	$70,650	+$1,670	+2.36%
Binance Portfolio Value	$177,451	$181,440	-$3,989	-2.20%
Total Portfolio Value	$249,771	$252,090	-$2,319	-0.92%
IBKR Unrealized P&L	-$18,900	-$19,970	+$1,070	+5.36%
IBKR Buying Power	$396,800	$383,900	+$12,900	+3.36%
IBKR Cash Balance	$34,200	$34,000	+$200	+0.59%

Overall Performance: The combined portfolio decreased by $2,319 (-0.92%) this week. While IBKR showed improvement with both portfolio value up and unrealized losses reduced, Binance experienced a larger decline driven primarily by cryptocurrency market weakness. The improved IBKR performance was offset by crypto losses.

Optimizing a Rust etcd KV Store: From 61% Overhead to 3% CPU in ~2 Weeks

Thu, 25 Jun 2026 00:00:00 +0300

Optimizing a Rust etcd KV Store: From 61% Overhead to 3% CPU in ~2 Weeks
#

The full journey of replacing the k3s kine+SQLite storage stack with a purpose-built Rust etcd v3 gRPC server and systematically eliminating every category of waste until 83% overhead turned into 97% useful work.

Table of Contents
#

Background: The Problem with kine
#

k3s uses kine as an etcd-to-SQL abstraction layer. By default, kine backs into SQLite — a full ACID SQL database — to store what is fundamentally an append-only key-value log. For a 30-pod cluster writing ~2.4 operations per second (mostly lease heartbeats), this stack consumes 17% of a CPU core on the control-plane node.

Trading Week 2026-06-21

Sun, 21 Jun 2026 18:00:00 +0200

Weekly Trading Analysis: June 21, 2026
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
Total Portfolio Value	$252,090.26	$249,638.86	+$2,451.40	+0.98%
IBKR Portfolio Value	$70,650.00	$69,560.00	+$1,090.00	+1.57%
Binance Portfolio Value	$181,440.26	$180,078.86	+$1,361.40	+0.76%
Total Unrealized P&L	-$77,807.59	-$81,134.06	+$3,326.47	+4.10%
IBKR Unrealized P&L	-$19,970.00	-$20,180.00	+$210.00	+1.04%
Binance Floating P&L	-$59,860.07	-$61,024.67	+$1,164.60	+1.91%
Total Cash	$34,000.00	$32,200.00	+$1,800.00	+5.59%

Overview: Portfolio value increased slightly by $2,451.40 (+0.98%) this week. Unrealized losses improved by $3,326.47 across both accounts, though we remain significantly underwater on most positions. Cash position increased by $1,800, providing additional buying power.

Trading Week 2026-06-14

Sun, 14 Jun 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending June 14, 2026
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$69,560	$71,500	-$1,940	-2.71%
Binance Portfolio Value	$180,078.86	$178,530.88	+$1,547.98	+0.87%
Total Portfolio Value	$249,638.86	$250,030.88	-$392.02	-0.16%
IBKR Unrealized P&L	-$20,180	-$20,300	+$120	+0.59%
IBKR Cash (USD)	$37,700	$37,700	$0	0.00%
Total Cash	$32,200	$32,400	-$200	-0.62%

Overview: The combined portfolio remained relatively stable this week, with a slight decline of 0.16% (~$392). Binance showed modest gains while IBKR experienced a modest pullback. Overall unrealized losses remain significant at approximately $79K across both accounts.

Fixing Kubelet Eviction Log Spam on ZFS: A Better Patch for containerfs.inodesFree

Wed, 10 Jun 2026 00:00:00 +0300

Fixing Kubelet Eviction Log Spam on ZFS: A Better Patch for containerfs.inodesFree
#

Diagnosing a kubelet eviction manager that logs “no observation found for eviction signal containerfs.inodesFree” every 10 seconds on ZFS-backed container filesystems, finding upstream PRs that don’t fully solve it, designing a better two-part patch, and applying it to a live K3s cluster — cutting CPU from 35% to 11%.

Trading Week 2026-06-07

Sun, 07 Jun 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending June 7, 2026
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$71,500	$70,070	+$1,430	+2.04%
Binance Portfolio Value	$178,531	$189,903	-$11,372	-5.99%
Total Portfolio Value	$250,031	$259,973	-$9,942	-3.83%
IBKR Unrealized P&L	-$20,300	-$18,010	-$2,290	-12.71%
IBKR Cash (USD)	$37,700	$38,500	-$800	-2.08%
IBKR Total Cash	$32,400	$32,800	-$400	-1.22%

IBKR Positions
#

Symbol	Quantity	Cost Basis	Market Value	P&L	WoW Change
UBER	500	$46,048	$35,240	-$10,808	Qty: 500 (0), Mkt: -$1,105, P&L: -$105
TWLO	35	$10,711	$7,910	-$2,801	Qty: 35 (0), Mkt: +$1,238, P&L: +$1,238
ATOS	80	$3,542	$358	-$3,184	Qty: 80 (0), Mkt: -$61, P&L: -$60
BLZE	100	$2,271	$748	-$1,523	Qty: 100 (0), Mkt: -$80, P&L: -$80
PSFE	50	$2,992	$345	-$2,647	Qty: 50 (0), Mkt: -$42, P&L: -$41
UBER Jun18 ‘26 78C	-5	-$1,121	-$108	+$1,014	Qty: -5 (0), Mkt: +$100, P&L: +$101
PLTR Jul17 ‘26 145C	1	$921	$576	-$345	NEW

Binance Positions
#

Symbol	Quantity	Market Value (USDC)	Notes
RWUSD	130,136.77	$130,145	+95.79 vs last week
ETH	29.05	$47,182	+0.003 ETH acquired, value down $11,417
TON	509.07	$848	+0.15 vs last week
EURI	260.52	$300	+0.09 vs last week
G	16,089.79	$43	No change in qty
CATI	190.35	$8	Previously not visible, now showing value

Positions Entered This Week
#

PLTR Jul17 ‘26 145C (IBKR): Purchased 1 call option contract on Palantir with a $145 strike expiring July 17, 2026. Cost basis: $921.05

Positions Closed This Week
#

No fully closed positions detected. All existing positions from last week remain in the portfolio.

Trading Week 2026-05-31

Sun, 31 May 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending May 31, 2026
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$70,070	$70,600	-$530	-0.75%
Binance Portfolio Value	$189,903	$191,989	-$2,086	-1.09%
Total Portfolio Value	$259,973	$262,589	-$2,616	-1.00%
IBKR Unrealized P&L	-$18,010	-$17,960	-$50	-0.28%
Binance Today’s P&L	+$150	-$713	+$863	+121.04%

Cash Balances (IBKR):

Optimizing a Java SIMD IPv6 Parser: From 7 M/s to 118 M/s in 17 Iterations

Sun, 31 May 2026 00:00:00 +0300

Optimizing a Java SIMD IPv6 Parser: From 7 M/s to 118 M/s in 17 Iterations
#

The full journey of porting Daniel Lemire’s hand-tuned C AVX-512 IPv6 parser to Java’s Vector API and systematically optimizing it through 17 iterations until it exceeded the C version’s throughput by 66%.

Table of Contents
#

Background: What We’re Parsing
#

An IPv6 address is a 128-bit number typically written as eight groups of four hexadecimal digits separated by colons:

Trading Week 2026-05-24

Sun, 24 May 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending May 24, 2026
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$70,600	$71,140	-$540	-0.76%
Binance Portfolio Value (USDC)	$191,989	$194,556	-$2,567	-1.32%
Total Portfolio Value	$262,589	$265,696	-$3,107	-1.17%
IBKR Unrealized P&L	-$17,960	-$22,170	+$4,210	+18.98%
Binance Today’s PNL	-$713	-	-	-0.37%
IBKR Cash (USD)	$38,500	$36,300	+$2,200	+6.06%
Total Cash	$32,900	$30,900	+$2,000	+6.47%

IBKR Open Positions
#

Symbol	Quantity	Cost Basis	Market Value	P&L	WoW Change
UBER	500	$46,048	$35,910 (-$1,635)	-$10,138 (-$1,635)	Qty: 500 (unchanged)
TWLO	35	$10,711	$6,576 (-$364)	-$4,135 (-$364)	Qty: 35 (unchanged)
ATOS	80	$3,542	$397 (+$5)	-$3,145 (+$5)	Qty: 80 (unchanged)
BLZE	100	$2,271	$763 (+$72)	-$1,508 (+$72)	Qty: 100 (unchanged)
PSFE	50	$2,992	$374 (-$12)	-$2,619 (-$12)	Qty: 50 (unchanged)
UBER JUN 18 ‘26 78 Call	-5	-$1,121	-$410	+$712	NEW POSITION

Binance Open Positions
#

Symbol	Quantity	Market Value (USDC)	P&L (USDC)	P&L (%)	WoW Change
ETH	29.04	$60,772	-$46,679	-43.44%	Qty: 29.04 (+0.003)
RWUSD	129,969	$129,961	-	-	Qty: +96
TON	508.81	$880	-$1,519	-63.31%	Qty: +0.15
G	16,090	$57	-$527	-90.28%	Qty: unchanged
EURI	260.37	$302	-	-	Qty: +0.08

Positions Entered This Week
#

IBKR
#

UBER JUN 18 ‘26 78 Call (Short): Sold 5 contracts at $2.25 each ($1,125 total) on May 18, 2026. This is a covered call position on UBER.

Positions Closed This Week
#

IBKR
#

DT JUN 18 ‘26 37.5 Call (Long): Originally 3 contracts, sold at $1,140 ($3.80 each) on May 18, 2026. Realized profit: $464.
ZEVY MAY 18 ‘25 230 Call: This position appears to have expired worthless (4,000 shares, $0 market value, $6,316 loss realized).

Analysis & Notes
#

Portfolio Performance
#

The combined portfolio decreased by $3,107 (-1.17%) this week, driven primarily by Binance’s crypto holdings. However, the IBKR unrealized P&L improved significantly, moving from -$22,170 to -$17,960, a $4,210 improvement.

Trading Week 2026-05-17

Sun, 17 May 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending May 17, 2026
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$71.14K	$71.08K	+$60	+0.08%
IBKR Unrealized P&L	-$22.17K	-$19.04K	-$3,130	-16.44%
IBKR Cash	$30.9K	$31.2K	-$300	-0.96%
IBKR Buying Power	$374.1K	$317.8K	+$56.3K	+17.72%
Binance Portfolio (USDC)	$194,556.16	$198,629.98	-$4,073.82	-2.05%
Total Portfolio Value	$265,696.16	$269,709.98	-$4,013.82	-1.49%

Note: Total portfolio combines IBKR ($71.14K) + Binance ($194,556.16) = $265,696.16

Trading Week 2026-05-10

Sun, 10 May 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending May 10, 2026
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$71,080	$68,010	+$3,070	+4.51%
Binance Portfolio Value (USDC)	$198,629.98	$197,753.24	+$876.74	+0.44%
Total Portfolio Value	$269,709.98	$265,763.24	+$3,946.74	+1.49%
IBKR Unrealized P&L	-$19,040	-$22,400	+$3,360	+15.00%
IBKR Cash (Total)	$31,200	$29,900	+$1,300	+4.35%

Note: Binance EUR values provided for reference but not converted (EUR 168,546.64 vs EUR 168,146.35 last week, +EUR 400.29).

Trading Week 2026-05-03

Sun, 03 May 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending May 3, 2026
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$68,010	$66,540	+$1,470	+2.21%
Binance Portfolio Value	$197,753.24	$197,840.76	-$87.52	-0.04%
Total Portfolio Value	$265,763.24	$264,380.76	+$1,382.48	+0.52%
IBKR Unrealized P&L	-$22,400	-$24,060	+$1,660	+6.90%
Binance Today’s PnL	+$1,428.30 (USDC)	-	-	-
IBKR Cash (USD)	$35,500	$34,600	+$900	+2.60%
IBKR Total Cash	$29,900	$29,300	+$600	+2.05%

IBKR Positions
#

Symbol	Qty	Cost Basis	Market Value	P&L	WoW Change
ATOS	80	$3,542	$429.60	-$3,112	Qty: 80, Mkt Val: $429.60 (-$30.57)
BLZE	100	$2,271	$428.00	-$1,843	Qty: 100, Mkt Val: $428.00 (-$2.00)
DT Jun18 26 37.5C	3	$674.09	$681.44	+$7.35	NEW
PSFE	50	$2,992	$452.00	-$2,540	Qty: 50, Mkt Val: $452.00 (+$16.50)
TWLO	35	$10,711	$6,301	-$4,410	Qty: 35, Mkt Val: $6,301 (+$1,268)
UBER	500	$46,048	$37,378	-$8,671	Qty: 500, Mkt Val: $37,378 (+$58)
UBER May15 26 78C	-5	-$1,537	-$992.26	+$545.20	NEW (Short)
ZEVY May18 25 230C	4,000	$6,316	$0	-$6,316	Qty: 4,000, Mkt Val: $0 (=)

Note: ZEVY position shows 4000 quantity representing 4,000 contracts.

Trading Week 2026-04-26

Sun, 26 Apr 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending April 26, 2026
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$66,540	$67,250	-$710	-1.06%
IBKR Unrealized P&L	-$24,060	-$23,040	-$1,020	+4.43% loss
Binance Portfolio Value	$197,840.76	$198,549.39	-$708.63	-0.36%
Total Portfolio Value	$264,380.76	$265,799.39	-$1,418.63	-0.53%

Cash Positions:

Trading Week 2026-04-19

Sun, 19 Apr 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending April 19, 2026
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$67,250.00	$63,550.00	+$3,700.00	+5.83%
IBKR Buying Power	$352,300.00	$280,400.00	+$71,900.00	+25.64%
IBKR Unrealized P&L	-$23,040.00	-$31,250.00	+$8,210.00	+26.27%
IBKR Cash	$29,200.00	$279.05	+$28,920.95	+10,367%
Binance Portfolio (USDC)	$198,549.39	$195,609.04	+$2,940.35	+1.50%
Total Portfolio Value	$265,799.39	$259,159.04	+$6,640.35	+2.56%

IBKR Positions
#

Symbol	Quantity	Cost Basis	Market Value	P&L	WoW Change
ATOS	80	$3,542.00	$466.40	-$3,076.00	Qty: 80 (0), P&L: +$71
BLZE	100	$2,271.00	$410.00	-$1,861.00	Qty: 100 (0), P&L: +$71
PSFE	50	$2,992.00	$442.50	-$2,550.00	Qty: 50 (0), P&L: +$72
TWLO	35	$10,711.00	$4,904.00	-$5,807.00	Qty: 35 (0), P&L: +$772
UBER	500	$46,048.00	$38,550.00	-$7,498.00	Qty: 500 (0), P&L: +$3,251
ZEVY MAY 18 ‘25 230 Call	4,000	$6,316.00	$0.00	-$6,316.00	Qty: 4,000 (0), P&L: $0

Total IBKR Market Value: $44,272.90 | Total Unrealized P&L: -$19,108.00

Trading Week 2026-04-12

Sun, 12 Apr 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending April 12, 2026
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$63,550.00	$65,010.00	-$1,460.00	-2.25%
Binance Portfolio Value	$195,609.04	$190,031.83	+$5,577.21	+2.94%
Total Portfolio Value	$259,159.04	$255,041.83	+$4,117.21	+1.61%
IBKR Unrealized P&L	-$31,250.00	-$31,440.00	+$190.00	+0.60%
IBKR Cash Balance	$279.05	$289.39	-$10.34	-3.57%
Binance Daily P&L	-$53.37	-$11.87	-$41.50	-349.62%

IBKR Positions
#

Symbol	Quantity	Cost Basis	Market Value	P&L	WoW Change
ATOS	80	$3,542.00	$395.20	-$3,147.00	Mkt Val: -$38.40, P&L: -$39
BLZE	100	$2,271.00	$339.00	-$1,932.00	Mkt Val: -$30.00, P&L: -$30
PSFE	50	$2,992.00	$370.00	-$2,622.00	Mkt Val: +$28.00, P&L: +$28
RACE	100	$39,820.00	$35,200.00	-$4,620.00	Mkt Val: +$1,145.00, P&L: +$1,145
RACE APR 17 ‘26 340C	-1	-$820.75	-$1,509.00	-$688.55	Mkt Val: -$474.00, P&L: -$474.16
TWLO	35	$10,711.00	$4,132.00	-$6,579.00	Mkt Val: -$441.00, P&L: -$441
UBER	500	$46,048.00	$35,299.00	-$10,749.00	Mkt Val: -$551.00, P&L: -$551
ZEVY MAY 18 ‘25 230C	4,000	$6,316.00	$0.00	-$6,316.00	No change

Binance Positions
#

Symbol	Quantity	Market Value (USDC)	WoW Change
RWUSD	129,455.80	$129,453.33	+$77.61
ETH	29.02	$65,079.98	+$5,407.72
TON	507.99	$702.82	+$72.07
EURI	259.91	$304.44	+$5.21
G	16,089.79	$61.81	+$5.66

Positions Entered This Week
#

No new positions were opened this week. All existing positions carried over from last week.

Trading Week 2026-04-05

Sun, 05 Apr 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending April 5, 2026
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$65,010	$61,660	+$3,350	+5.43%
Binance Portfolio Value	$190,032	$188,869	+$1,163	+0.62%
Total Portfolio Value	$255,042	$250,529	+$4,513	+1.80%
IBKR Unrealized P&L	-$31,440	-$35,030	+$3,590	+10.25%
IBKR Cash Balance	$289.39	-$377.45	+$666.84	+176.67%
IBKR Buying Power	$284,100	$265,600	+$18,500	+6.97%

Overview: The combined portfolio grew by +$4,513 (+1.80%) this week, driven primarily by improved valuations in both IBKR and Binance accounts. The IBKR unrealized P&L improved by $3,590 as several positions recovered from last week’s lows. Cash position strengthened significantly, now positive at $289.39 after being negative last week.

Debugging xrdp Session Sharing: Buffer Overflows, Double Frees, and State Machine Nightmares

Fri, 03 Apr 2026 02:00:00 +0300

Debugging xrdp Session Sharing: A Tale of Buffer Overflows, Double Frees, and State Machine Nightmares
#

TL;DR
#

We implemented session sharing (shadowing) in xrdp — allowing multiple RDP clients to connect to the same desktop session with independent cursors and input routing. The feature required fixes across three layers: the xorgxrdp X driver (per-client MPX input dispatch), the sesman session manager (don’t kill existing clients when new ones join), and the xrdp window manager (non-terminal state to keep RDP connections alive). Along the way we fixed a 128-byte buffer overflow, a double-free from packed struct allocations, a state machine that re-processed its own state, and a UI that wouldn’t paint or respond to clicks. Core dumps and gdb inside a privileged container were essential for cracking the hardest bugs.

Trading Week 2026-03-29

Sun, 29 Mar 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending March 29, 2026
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$61,660	$63,810	-$2,150	-3.37%
Binance Portfolio Value (USDC)	$188,869	$192,740	-$3,871	-2.01%
Total Portfolio Value	$250,529	$256,550	-$6,021	-2.35%
IBKR Unrealized P&L	-$35,030	-$32,400	-$2,630	+8.12%
IBKR Buying Power	$265,600	$273,300	-$7,700	-2.82%

Notes:

Cracking irssi fish with SHA256-NI

Sat, 28 Mar 2026 00:00:00 +0200

Debugging SHA256-NI: A Deep Dive into Endianness and Intel Hardware Acceleration
#

Introduction
#

This blog post documents an intense debugging session to fix a SHA256-NI (Intel SHA Extensions) implementation in a FiSH encryption module for the Irssi IRC client. The goal was to create a high-performance password cracker for the FiSH encryption protocol used in Irssi, which requires 71,624 SHA256 iterations per password attempt. After discovering that OpenSSL was way too slow, we dove deep into Intel’s hardware-accelerated SHA256 intrinsics—only to hit a subtle endianness bug that took minutes to track down.

Trading Week 2026-03-22

Sun, 22 Mar 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending March 22, 2026
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$63,810	$65,530	-$1,720	-2.62%
Binance Portfolio Value	$192,740	$190,210	+$2,530	+1.33%
Total Portfolio Value	$256,550	$255,740	+$810	+0.32%
IBKR Unrealized P&L	-$32,400	-$31,640	-$760	-2.40%
IBKR Daily Change	-$988.60 (-1.53%)	-	-	-
Binance Daily P&L	+$284.66 (+0.15%)	-	-	-

Cash Position:

Building a Standalone Chart Fetching Script with Exchange Fallback

Sat, 21 Mar 2026 00:00:00 +0000

TLDR
#

Extracted chart image fetching from the main trading-to-blog script into a standalone fetch-charts.sh script
The script reads chart requests from debug.json (generated by the main script) and fetches chart images via the chart-img API
Added intelligent exchange fallback: when an exchange returns 422 Invalid Symbol, the script tries alternative exchanges (NASDAQ → NYSE → AMEX for stocks, BINANCE → COINBASE → etc for crypto)
chart-img provides API v3 endpoints (/v3/tradingview/exchange/list and /v3/tradingview/exchange/<EXCHANGE_ID>) to look up valid symbols
The root cause was AI model hallucinations - the LLM sometimes outputs the wrong exchange (e.g., NASDAQ instead of NYSE) for common stocks
Later eliminated duplication by invoking fetch-charts.sh as a subprocess with a FIFO and fd 3 to separate chart markdown output from log output
Added --skip-image-processing and --use-existing-post flags to the parent script to iterate on chart fetching without re-running expensive image processing or model calls

Introduction
#

This post documents a VibeCode session where I built a standalone script to fetch TradingView charts from previously generated debug data. The journey involved extracting code from an existing script, handling API errors gracefully, and implementing intelligent exchange fallback for invalid symbols.

Trading Week 2026-03-15

Sun, 15 Mar 2026 18:00:00 +0200

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Market Value	$65,530	$66,870	-$1,340	-2.0%
IBKR Buying Power	$282,300	$288,500	-$6,200	-2.2%
IBKR Unrealized P&L	-$31,640	-$28,660	-$2,980	+10.4% (more loss)
Binance Total Value (USDC)	$190,210	$187,753	+$2,457	+1.3%
Total Portfolio Value	$255,740	$254,623	+$1,117	+0.4%

Open Positions
#

IBKR Positions
#

Symbol	Quantity	Cost Basis	Market Value	P&L
ATOS	80 (0)	3,542 (0)	$381.61 (+$19.21)	-$3,160 (+$20)
BLZE	100 (0)	2,271 (0)	$364.00 (-$18.00)	-$1,907 (-$18)
DT MAR 20 ‘26 42.5 Call	3 (0)	706.10 (0)	$42.82 (-$122.18)	-$663.27 (-$122.17)
PSFE	50 (0)	2,992 (0)	$346.00 (-$31.50)	-$2,646 (-$31)
RACE	100 (0)	39,820 (0)	$33,099 (-$1,901)	-$6,721 (-$1,901)
RACE MAR 20 ‘26 390 Call	-1 (0)	-1,114 (0)	-$5.45 (+$71.06)	$1,109 (+$72)
TWLO	35 (0)	10,711 (0)	$4,326 (-$119)	-$6,385 (-$119)
UBER	500 (0)	46,048 (0)	$36,615 (-$730)	-$9,433 (-$730)
ZEVY MAY 18 ‘25 230 Call	4000 (0)	6,316 (0)	$0 (0)	-$6,316 (0)

Binance Positions
#

Symbol	Quantity	Cost Basis	Market Value	P&L
RWUSD	129,122.60312508 (+83.17)	N/A	$129,124.25 (+$81.36)	$0 (0)
ETH	29.00630664 (0)	N/A	$60,064.54 (+$2,398.77)	$0 (0)
TON	507.46361078 (+0.13)	N/A	$660.86 (-$20.46)	$0 (0)
EURI	259.63731666 (+0.06)	N/A	$296.39 (-$4.76)	$0 (0)

Positions Entered This Week
#

None.

Thin Blue Lines

Sun, 15 Mar 2026 00:00:00 +0200

From VibeCode to Production: Building an LLM-Driven Trading Blog with Automated Chart Integration
#

In this comprehensive guide, I’ll walk you through how we transformed a basic trading blog automation script into a sophisticated system that uses Large Language Models to dynamically generate chart requests, fetch TradingView screenshots via the Chart-IMG API, and embed them directly into Hugo-compatible blog posts. This session represents a fascinating exploration of how AI can drive not just content generation but also the tool-calling patterns needed to fetch external resources in real-time.

XRdp sound support

Mon, 09 Mar 2026 00:00:00 +0200

Sound Support in xrdp Docker via PipeWire: A Comprehensive Implementation Guide
#

Introduction
#

This blog post documents a complete implementation of audio sound support in an xrdp Docker container using PipeWire. The session covers everything from initial investigation through successful implementation, including troubleshooting, multiple iterations, and final refactoring for maintainability. Whether you’re running xrdp in Docker for remote desktop access or building a headless Linux desktop environment, this guide provides detailed instructions for enabling audio redirection to your RDP client.

Trading Week 2026-03-08

Sun, 08 Mar 2026 18:00:00 +0200

Weekly Trading Analysis — Week Ending March 8, 2026
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$66,870.00	$67,590.00	-$720.00	-1.07%
Binance Portfolio Value	$187,752.64	$186,031.08	+$1,721.56	+0.93%
Total Portfolio Value	$254,622.64	$253,621.08	+$1,001.56	+0.39%
IBKR Unrealized P&L	-$28,660.00	-$26,270.00	-$2,390.00	-9.10%
IBKR Buying Power	$288,500.00	$293,300.00	-$4,800.00	-1.64%
Total Cash (IBKR)	-$375.56	-$325.04	-$50.52	-15.54%

IBKR Open Positions
#

Symbol	Quantity	Cost Basis	Market Value	P&L	Week-over-Week
ATOS	80	$3,542.00	$362.40	-$3,180	Qty: 80 (0), Mkt: +$1.60, P&L: +$1
BLZE	100	$2,271.00	$382.00	-$1,889	Qty: 100 (0), Mkt: -$1.00, P&L: -$1
DT Mar20 26 42.5C	3	$706.10	$165.00	-$541.10	Qty: 3 (0), Mkt: +$116.60, P&L: +$116.60
PSFE	50	$2,992.00	$377.50	-$2,615	Qty: 50 (0), Mkt: +$64.50, P&L: +$64.50
RACE	100	$39,820.00	$35,000.00	-$4,820	Qty: 100 (0), Mkt: -$2,985, P&L: -$2,985
RACE Mar20 26 390C	-1	-$1,114.00	-$76.51	+$1,037	Qty: -1 (0), Mkt: +$609.27, P&L: +$608.84
TWLO	35	$10,711.00	$4,445.00	-$6,266	Qty: 35 (0), Mkt: +$211, P&L: +$211
UBER	500	$46,048.00	$37,345.00	-$8,703	Qty: 500 (0), Mkt: -$280, P&L: -$280
ZEVY May18 25 230C	4,000	$6,316.00	$0.00	-$6,316	Qty: 4,000 (0), Mkt: $0, P&L: $0

Binance Open Positions
#

Symbol	Quantity	Market Value (USDC)	Week-over-Week
RWUSD	129,039.44	$129,042.89	Qty: +5,089.61, Mkt: +$5,085.57
ETH	29.0063	$57,665.77	Qty: 0, Mkt: +$1,611.46
TON	507.33	$681.32	Qty: +0.11, Mkt: +$75.16
EURI	259.58	$301.15	Qty: +0.05, Mkt: -$4.59

Positions Entered This Week
#

No new positions opened in either IBKR or Binance accounts compared to last week.

Positions Closed This Week
#

Symbol	Last Week Quantity	Last Week Value
USDC	5,015.80	$5,015.80

Note: The USDC position in Binance was closed or converted this week.

XRDP in k8s

Sun, 08 Mar 2026 00:00:00 +0200

Running xrdp with GPU Acceleration in Kubernetes: A Complete Troubleshooting Guide
#

Introduction
#

In this blog post, I’ll walk you through the complete journey of deploying xrdp (Remote Desktop Protocol server) in a Kubernetes environment with GPU acceleration. What seemed like a straightforward deployment turned into a multi-hour troubleshooting session covering storage classes, volume mounting issues, container security contexts, and resource allocation.

From Virtual to Virtualized: Enabling GPU Hardware Acceleration in containerd/xrdp Containers

Mon, 02 Mar 2026 00:00:00 +0200

From Virtual to Virtualized: Enabling GPU Hardware Acceleration in containerd/xrdp Containers
#

In this comprehensive guide, I’ll walk you through the complete process of adding GPU passthrough to a containerd container using nerdctl while preserving state, configuring xrdp for hardware-accelerated graphics, and baking everything into a reproducible Dockerfile.

TL;DR
#

Commit the container to save state to an image, then recreate with GPU devices
Pass both /dev/dri/card0 and /dev/dri/renderD128 to the container
Configure xorg.conf with DRMDevice, DRI3, and DRMAllowList options
Add user to video and render groups for device access
Hardware acceleration confirmed: ~12,000 FPS with glxgears (vs ~60 FPS with llvmpipe)

Understanding the Starting Point
#

The user had a running containerd container (ID: 6d5b3c01f38a) built from locals.tf/xrdp:latest. This container was running xrdp for remote desktop access and needed GPU passthrough for hardware acceleration.

Trading Week 2026-03-01

Sun, 01 Mar 2026 18:00:00 +0200

Weekly Trading Analysis: Week Ending March 1, 2026
#

📊 Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$67,590.00	$66,180.00	+$1,410.00	+2.13%
Binance Portfolio Value	$186,031.08	$187,160.93	-$1,129.85	-0.60%
Total Portfolio Value	$253,621.08	$253,340.93	+$280.15	+0.11%
IBKR Unrealized P&L	-$26,270.00	-$27,950.00	+$1,680.00	+6.01%
IBKR Buying Power	$293,300.00	$286,600.00	+$6,700.00	+2.34%
Cash (IBKR)	-$325.04	-$325.54	+$0.50	+0.15%

📈 IBKR Open Positions
#

Symbol	Quantity	Cost Basis	Market Value	P&L	WoW Change
RACE	100	$39,820	$37,985 (-$1,000)	-$1,835 (+$1,290)	Qty: 100 (0)
UBER	500	$46,048	$37,625 (+$700)	-$8,423 (+$700)	Qty: 500 (0)
TWLO	35	$10,711	$4,234	-$6,477	Qty: 35 (0)
ATOS	80	$3,542	$360.80	-$3,181	Qty: 80 (0)
PSFE	50	$2,992	$313.00	-$2,679	Qty: 50 (0)
BLZE	100	$2,271	$383.00	-$1,888	Qty: 100 (0)
ZEVY May18 25 230C	4,000	$6,316	$0	-$6,316	Qty: 4,000 (0)
DT Mar20 26 42.5C	3	$706.10	$48.40	-$657.70	Qty: 3 (0)
RACE Mar20 26 390C	-1	-$1,114	-$685.78	+$428.16	Qty: -1 (0)

📊 Binance Open Positions
#

Symbol	Quantity	Market Value (USDC)	WoW Change
RWUSD	123,949.82	$123,957.32 (+$91.57)	+84.58 tokens
ETH	29.0063	$56,054.31 (-$1,182.56)	Qty unchanged
USDC	5,015.80	$5,015.80 (+$0.58)	+0.58 tokens
TON	507.22	$606.16 (-$61.98)	+0.13 tokens
EURi	259.53	$305.74 (+$0.12)	+0.07 tokens

🚀 Positions Entered This Week
#

No new positions were opened this week. All positions carried over from the previous week.

Reverse Engineering the Fictional Product Licensing System: A Comprehensive Journey

Sun, 01 Mar 2026 00:00:00 +0000

Reverse Engineering the Fictional Product Licensing System: A Comprehensive Journey
#

Introduction
#

In this comprehensive blog post, I document my extensive reverse engineering journey into the Fictional Product licensing system. What began as a curiosity about how commercial software licensing works evolved into a multi-week deep dive into cryptographic primitives, binary analysis, and the intricate architecture of modern license validation systems. This project ultimately resulted in a complete understanding of the license file format, cryptographic pipeline, and the successful generation of valid license files for all four Fictional Product components.

Investigating k3s CPU usage spikes in an idle K8S cluster

Sun, 01 Mar 2026 00:00:00 +0200

Troubleshooting K3s CPU Spikes: A Deep Dive into Stuck Reflectors
#

TL;DR
#

Root Cause: Stuck Kubernetes reflector trying to watch a non-existent resource, causing ~160 failed watch attempts per hour
Key Finding: Fleet controller was the culprit, repeatedly retrying failed API watch requests
Solution: Full k3s restart cleared the stuck reflectors
Result: CPU usage dropped from 10-25% to ~9% (with full restart achieving 0% idle)
Tools Used: journalctl, kubectl, strace, curl with k3s certificates, tcpdump

Introduction
#

Kubernetes control plane performance issues can be notoriously difficult to diagnose, especially when the symptoms manifest as elevated CPU usage without clear error messages. In this article, I’ll walk through a comprehensive debugging session where we investigated a K3s cluster experiencing persistent CPU spikes. We’ll examine the investigation techniques, the root cause identification, and the ultimate resolution.

Extending GhidraMCP with Debugging Capabilities: A Developer's Journey

Sat, 28 Feb 2026 00:00:00 +0200

Extending GhidraMCP with Debugging Capabilities: A Developer’s Journey
#

Introduction
#

The GhidraMCP project started as a tool to expose Ghidra’s static analysis capabilities—decompilation, function renaming, cross-references—via the Model Context Protocol (MCP). But reverse engineering often requires dynamic analysis, and we needed the MCP server to work seamlessly with Ghidra’s debugger as well.

Docker with xrdp & lxqt

Tue, 24 Feb 2026 00:00:00 +0200

Debugging and Enhancing a Docker-Based XRDP Desktop Environment: A VibeCode Session
#

Introduction
#

In this blog post, I’m documenting a comprehensive troubleshooting and enhancement session with a Docker-based XRDP desktop environment running LXQt on Debian. The session covered fixing missing icons after login, configuring terminal applications with custom fonts, setting up the Fish shell, and optimizing the Docker build process for faster rebuilds. This was a “VibeCode” session—a real-time debugging and development workflow that demonstrates practical solutions to common Linux desktop containerization challenges.

K8sizing homeassistant & Zigbee2MQTT

Mon, 23 Feb 2026 00:00:00 +0200

From Containerd to Kubernetes: Migrating Home Assistant, Mosquitto, and Zigbee2MQTT
#

Introduction
#

In this comprehensive guide, I’ll walk you through the process of migrating standalone containers running in containerd (managed via nerdctl) to Kubernetes. This session covers discovering non-Kubernetesized containers, creating Kubernetes manifests that preserve volumes and configurations, troubleshooting deployment issues, and successfully running IoT services in a Kubernetes cluster.

Trading Week 2026-02-22

Sun, 22 Feb 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending February 22, 2026
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$66,180.00	$65,360.00	+$820.00	+1.26%
Binance Portfolio Value	$187,160.93	$186,618.43	+$542.50	+0.29%
Total Portfolio Value	$253,340.93	$251,978.43	+$1,362.50	+0.54%
IBKR Unrealized P&L	-$27,950.00	-$28,290.00	+$340.00	-1.20%

IBKR Positions
#

Symbol	Quantity	Cost Basis	Market Value	P&L	WoW Change
ATOS	80	$3,542.00	$336.80	-$3,205.20	Mkt Val: +$21.60
BLZE	100	$2,271.00	$440.00	-$1,831.00	Mkt Val: +$42.00
DT Mar20 26 42.5C	3	$706.10	$82.81	-$623.29	Mkt Val: -$51.70
PSFE	50	$2,992.00	$313.56	-$2,678.44	Mkt Val: -$2.94
RACE	100	$39,820.00	$36,696.00	-$3,124.00	Mkt Val: -$1,933.00
RACE Mar20 26 390C	-1	-$1,114.00	-$388.97	+$724.97	Mkt Val: +$1,154.03
TWLO	35	$10,711.00	$3,955.00	-$6,756.00	Mkt Val: +$106.00
UBER	500	$46,048.00	$36,925.00	-$9,123.00	Mkt Val: +$1,280.00
ZEVY May18 25 230C	4,000	$6,316.00	$0.00	-$6,316.00	No Change

IBKR Cash Balance: -$325.54 (EUR: -$132.48, USD: -$227.46)

Blog Automation Setup with OpenCode

Sun, 22 Feb 2026 01:00:00 +0200

TL;DR
#

Built a self-hosted Hugo blog at locals.tf/blog with automated workflows for:

Converting OpenCode session transcripts into polished blog posts using AI
Parsing trading screenshots (IBKR/Binance) into weekly analysis posts
Free API integration (Google Gemini or Groq) for AI processing

Introduction
#

This OpenCode session focused on setting up a blog publishing system for two distinct content types: technical posts from our collaboration sessions and weekly trading analysis. The goal was to minimize ongoing maintenance while making post creation as effortless as possible.

Automating Blog Posts from VibeCode Sessions with OpenCode-s Free AI API

Sun, 22 Feb 2026 00:00:00 +0200

Automating Blog Posts from VibeCode Sessions with OpenCode’s Free AI API
#

TL;DR

OpenCode’s Zen API at opencode.ai/zen/v1/chat/completions provides free access to models like big-pickle using the “public” API key
The key discovery was that passing max_tokens causes models to output to the reasoning field instead of content — removing this parameter fixes the issue
Use jq --rawfile for passing large files to the API (not --slurpfile which expects JSON format)
The opencode-cli works without an API key because it uses apiKey: "public" which the server accepts for free models with allowAnonymous: true

Introduction
#

In this session, I worked on automating the conversion of VibeCode session transcripts into blog posts using OpenCode’s free AI API. The journey involved discovering how the opencode-cli authenticates without requiring an API key, debugging API request format issues, and ultimately creating a working bash script that transforms raw transcripts into formatted markdown blog posts.

Trading Week 2026-02-15

Sun, 15 Feb 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending 2026-02-15
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$65,360.00	$63,120.00	+$2,240.00	+3.55%
Binance Portfolio Value	$186,618.43	$190,347.95	-$3,729.52	-1.96%
Total Portfolio Value	$251,978.43	$253,467.95	-$1,489.52	-0.59%
Unrealized P&L (IBKR)	-$28,290.00	-$30,730.00	+$2,440.00	+7.94%
Cash Balance (IBKR)	-$324.30	-$1,270.00	+$945.70	+74.46%
Buying Power (IBKR)	$286,400.00	$270,100.00	+$16,300.00	+6.04%

Binance Today’s P&L: +$310.14 USDC (+0.17%)

Trading Week 2026-02-08

Sun, 08 Feb 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending February 8, 2026
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$63,120	$65,590	-$2,470	-3.77%
Binance Portfolio Value (USDC)	$190,347.95	$195,335.05	-$4,987.10	-2.55%
Total Portfolio Value	$253,467.95	$260,925.05	-$7,457.10	-2.86%
IBKR Unrealized P&L	-$30,730	-$25,650	-$5,080	+19.80% (worse)
IBKR Buying Power	$270,100	$279,700	-$9,600	-3.43%

Overall Portfolio Performance: The combined portfolio declined by $7,457.10 (-2.86%) week-over-week. IBKR saw a $2,470 decrease while Binance dropped $4,987. The unrealized losses in IBKR worsened by $5,080 as positions moved further against us.

Trading Week 2026-02-01

Sun, 01 Feb 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending February 1, 2026
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Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$65,590.00	$67,770.00	-$2,180.00	-3.22%
Binance Portfolio Value (USDC)	$195,335.05	$213,566.56	-$18,231.51	-8.54%
Total Portfolio Value	$260,925.05	$281,336.56	-$20,411.51	-7.25%
IBKR Unrealized P&L	-$25,650.00	-$25,770.00	+$120.00	+0.47%
Binance Today’s PNL	-$5,556.20	+$2,193.31	-$7,749.51	-353.23%

Overall Weekly Performance: The combined portfolio declined by $20,411.51 (-7.25%) this week, with Binance driving most of the losses due to a sharp ETH correction. IBKR showed a modest improvement in unrealized losses.

Trading Week 2026-01-25

Sun, 25 Jan 2026 18:00:00 +0200

Weekly Trading Analysis - Week Ending January 25, 2026
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$67,770.00	$61,740.00	+$6,030.00	+9.77%
Binance Portfolio Value	$213,566.56	$215,735.24	-$2,168.68	-1.01%
Total Portfolio Value	$281,336.56	$277,475.24	+$3,861.32	+1.39%
Unrealized P&L (IBKR)	-$25,770.00	-$21,800.00	-$3,970.00	-18.21%
Cash Balance (IBKR)	-$722.84	-$9,800.00	+$9,077.16	+92.62%

Note: Combined portfolio value increased by $3,861.32 (1.39%) week-over-week, driven primarily by IBKR portfolio growth despite a slight decline in Binance holdings.

DollHouse PostgreSQL Optimization

Sat, 17 Jan 2026 18:34:37 +0200

TL;DR
#

Moved application logic from Python loops to PostgreSQL functions/views, achieving 50-80% runtime reduction by eliminating the N+1 query pattern.

The Problem
#

The DollHouse application monitors torrent feeds and downloads TV releases matching a wishlist. The core find_releases() method had a classic N+1 query problem:

Trading Week 2025-12-21

Sun, 21 Dec 2025 18:00:00 +0200

Weekly Trading Analysis - Week Ending December 21, 2025
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$61,740	$62,580	-$840	-1.34%
IBKR Buying Power	$245,800	$250,400	-$4,600	-1.84%
IBKR Unrealized P&L	-$21,800	-$22,810	+$1,010	+4.43%
IBKR Cash Balance	-$9,800	N/A	-	-
Binance Portfolio (USDC)	$215,735.24	$219,748.92	-$4,013.68	-1.83%
Total Portfolio Value	$277,475.24	$282,328.92	-$4,853.68	-1.72%

Today’s Performance: +$1,001.84 USDC (+0.61%)

Trading Week 2025-12-14

Sun, 14 Dec 2025 18:00:00 +0200

Weekly Trading Analysis - Week Ending December 14, 2025
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Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$62,580	$66,140	-$3,560	-5.38%
Binance Portfolio Value	$219,749	$216,614	+$3,135	+1.45%
Total Portfolio Value	$282,329	$282,754	-$425	-0.15%
IBKR Unrealized P&L	-$22,810	-$19,760	-$3,050	-15.43%
IBKR Buying Power	$250,400	$274,400	-$24,000	-8.74%

Overview: The combined portfolio declined slightly by 0.15% this week. IBKR suffered losses (-5.38%), while Binance gains (+1.45%) partially offset them. The overall unrealized P&L worsened by $3,050 as positions moved further into the red.

Trading Week 2025-12-07

Sun, 07 Dec 2025 18:00:00 +0200

Weekly Trading Analysis - Week Ending December 7, 2025
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Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$66,140.00	$63,570.00	+$2,570.00	+4.04%
IBKR Buying Power	$274,400.00	$247,700.00	+$26,700.00	+10.78%
IBKR Unrealized P&L	-$19,760.00	-$23,440.00	+$3,680.00	+15.70%
Binance Portfolio (USDC)	$216,613.64	$211,751.72	+$4,861.92	+2.30%
Total Portfolio Value	$282,753.64	$275,321.72	+$7,431.92	+2.70%

Note: Cash balances not visible in screenshots for current week.

Trading Week 2025-11-23

Sun, 23 Nov 2025 18:00:00 +0200

Weekly Trading Analysis: Week Ending November 23, 2025
#

Weekly Summary
#

The combined portfolio experienced a challenging week with significant unrealized losses in equity positions outweighing modest gains in crypto.

Metric	Current Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$63,570	$67,870	-$4,300	-6.34%
IBKR Unrealized P&L	-$23,440	-$15,450	-$7,990	-51.72%
Binance Portfolio Value (USDC)	$211,751.72	$218,730.89	-$6,979.17	-3.19%
Total Portfolio Value	$275,326.72	$286,600.89	-$11,274.17	-3.93%

Breakdown by Account
#

Account	Market Value	% of Total
IBKR	$63,570	23.1%
Binance	$211,751.72	76.9%
Combined Total	$275,326.72	100%

Open Positions
#

IBKR Positions
#

Symbol	Quantity	Cost Basis	Market Value	Unrealized P&L	WoW Change
ATOS	1,200	$3,542	$939.48	-$2,603 (-$21)	Unchanged
BLZE	100	$2,271	$440.00	-$1,831 (-$64.98)	Unchanged
CBRL DEC 19 ‘25 62.5C	1	$620.05	$0.52	-$619.53 (-$4.93)	Unchanged
DKNG DEC 19 ‘25 40C	5	$903.48	$44.78	-$858.70 (-$30.22)	Unchanged
PSFE	50	$2,992	$358.50	-$2,634 (-$3.50)	Unchanged
RACE	100	$39,820	$38,935	-$885.30 (-$1,725.30)	Unchanged
RPD DEC 19 ‘25 30C	5	$698.54	$0.29	-$698.25 (-$671.76)	Unchanged
TWLO	35	$10,711	$4,221	-$6,490 (-$180)	Unchanged
UBER	500	$46,048	$41,995	-$4,054 (-$755)	Unchanged
ZEVY MAY 18 ‘25 230C	4,000	$6,316	$0.00	-$6,316 (-$6,316)	Unchanged

Binance Positions
#

Symbol	Quantity	Market Value (USDC)	Avg Price	WoW Change
ETH	29.0063	$82,783.88	$3,445.97	-$6,875.86 (-7.67%)
RWUSD	72,473.46	$72,472.61	$1.00	+$71.37 (+0.10%)
USDC	55,352.83	$55,352.83	$1.00	Unchanged
TON	505.4495	$751.44	$4.72	-$170.34 (-18.48%)
SLF	0.083	$0.00	N/A	Delisted/Swapped

Positions Entered This Week
#

No new positions were opened this week.

Trading Week 2025-11-16

Sun, 16 Nov 2025 18:00:00 +0200

Weekly Trading Analysis: November 16, 2025
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$67,870	$67,970	-$100	-0.15%
IBKR Buying Power	$270,000	$206,300	+$63,700	+30.88%
IBKR Unrealized P&L	-$15,450	-$15,420	-$30	-0.19%
Binance Portfolio (USDC)	$218,731	$228,427	-$9,696	-4.24%
Binance Portfolio (EUR)	€188,354	€197,592	-€9,238	-4.68%
Total Portfolio Value	$286,601	$296,397	-$9,796	-3.31%

Key Observations
#

Combined portfolio declined 3.31% week-over-week
IBKR buying power increased significantly (+$63,700) due to reduced margin utilization
Binance portfolio took the largest hit, down $9,696 primarily from ETH price decline
Overall unrealized losses increased slightly from -$15,420 to -$15,450

IBKR Positions
#

Symbol	Quantity	Cost Basis	Market Value	P&L	P&L Change
ATOS	1,200	$3,542	$960.00	-$2,582	-$14
BLZE	100	$2,271	$504.98	-$1,766	-$78
CBRL DEC 19 ‘25 62.5C	1	$620.05	$5.45	-$614.60	-$5
DKNG DEC 19 ‘25 40C	5	$903.48	$75.00	-$828.48	-$54
PSFE	50	$2,992	$355.00	-$2,637	-$155
RACE	100	$39,820	$41,660	+$1,840	+$400
RACE NOV 21 ‘25 410C	-1	-$1,130	-$1,080	+$49.84	-$13
RPD DEC 19 ‘25 30C	5	$698.54	$28.53	-$670.01	+$26
TWLO	35	$10,711	$4,401	-$6,310	-$62
UBER	500	$46,048	$45,750	-$298	-$177
UBER NOV 21 ‘25 96C	-5	-$2,347	-$165.26	+$2,181	+$322
ZENV MAY 18 ‘25 230C	4,000	$6,316	$0	-$6,316	$0

Top Holdings by Market Value
#

RACE - $41,660 (100 shares, +$1,840 unrealized gain)
UBER - $45,750 (500 shares, -$298 unrealized loss)
TWLO - $4,401 (35 shares, -$6,310 unrealized loss)

Binance Positions
#

Symbol	Quantity	Market Value (USDC)	% of Portfolio
ETH	29.0063	$89,660	41.0%
RWUSD	72,409.96	$72,401	33.1%
USDC	55,352.82	$55,353	25.3%
TON	505.45	$922	0.4%
SLF	0.083	$0 (Delisted)	0%

Binance Performance
#

Today’s PNL: -$2,185.72 (-0.99%)
ETH Contribution: -$2,150.43 (-2.34%)
TON Contribution: -$14.65 (-1.56%)

Positions Entered This Week
#

Account	Symbol	Quantity	Cost Basis	Notes
None	—	—	—	No new positions entered this week

Positions Closed This Week
#

Account	Symbol	Quantity	Market Value	Realized P&L	Notes
IBKR	IE00B1B82251	330.74	—	—	ETF position closed
Binance	EURI	257.96	$298	—	EURI position closed

Closed Position Details
#

IE00B1B82251: Sold 330.74 units at $40,264 (small gain of $264.35)
EURI: Removed from portfolio, negligible value

Analysis & Notes
#

Portfolio Performance
#

The combined portfolio declined 3.31% this week, driven primarily by the Binance portfolio’s 4.24% decline. The crypto market experienced headwinds this week, with Ethereum dropping significantly.

Trading Week 2025-11-09

Sun, 09 Nov 2025 18:00:00 +0200

Weekly Trading Analysis - Week Ending November 9, 2025
#

Weekly Summary
#

Metric	This Week	Last Week	Change	Change (%)
IBKR Portfolio Value	$67,970	$67,440	+$530	+0.79%
IBKR Buying Power	$206,300	$212,500	-$6,200	-2.92%
IBKR Unrealized P&L	-$15,420	-$15,700	+$280	+1.78%
Binance Total Value (USDC)	$228,427	$240,555	-$12,128	-5.04%
Combined Portfolio	$296,397	$307,995	-$11,598	-3.77%

Note: Combined portfolio excludes EUR values to maintain consistent USD comparison.

Trading Week 2025-10-26

Sun, 26 Oct 2025 18:00:00 +0200

WeeklySummary

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Market Value	$67,440	$65,660	+$1,780	+2.71%
IBKR Buying Power	$212,500	$186,400	+$26,100	+14.00%
IBKR Unrealized P&L	-$15,700	-$17,570	+$1,870	+10.64% (improvement)
Binance Portfolio Value (USDC)	$240,555.26	$238,738.63	+$1,816.63	+0.76%
Total Portfolio Value	$307,995.26	$304,398.63	+$3,596.63	+1.18%

Open Positions
#

IBKR Positions
#

Symbol	Quantity	Cost Basis	Market Value	P&L
ATOS	1,200 (0)	3,542 (0)	$1,119 (-$42)	-$2,423 (-$42)
BLZE	100 (0)	2,271 (0)	$1,050 (+$137)	-$1,221 (+$137)
CBRL DEC 19 ‘25 62.5C	1 (0)	620.05 (0)	$14.55 (-$7.48)	-$605.51 (-$7.49)
DKNG DEC 19 ‘25 40C	5 (0)	903.48 (0)	$460.00 (-$132.01)	-$443.48 (-$132.01)
IE00B1B82251	330.74 (0)	40,000 (0)	$40,235 (+$16)	$234.98 (+$16.04)
PSFE	50 (0)	2,992 (0)	$634.50 (+$35)	-$2,358 (+$35)
RACE	100 (0)	39,820 (0)	$41,000 (+$1,100)	$1,180 (+$1,100.30)
RACE NOV 21 ‘25 410C	-1 (new)	-$1,130 (new)	-$1,416 (new)	-$285.96 (new)
RPD DEC 19 ‘25 30C	5 (0)	698.54 (0)	$97.33 (-$1.42)	-$601.21 (-$1.42)
TWLO	35 (0)	10,711 (0)	$3,944 (+$211)	-$6,767 (+$211)
UBER	500 (0)	46,048 (0)	$47,051 (+$876)	$1,002 (+$875.49)
UBER NOV 21 ‘25 96C	-5 (new)	-$2,347 (new)	-$2,039 (new)	$307.27 (new)
ZEVY MAY 18 ‘25 230C	4,000 (0)	6,316 (0)	$0 (0)	-$6,316 (0)

Binance Positions
#

Symbol	Quantity	Market Value (USDC)	P&L (USDC)
SLF	0.08302842 (0)	$0.00 (0)	N/A
RWUSD	127,183.55 (-89,878.40)	$127,173.72 (-$89,882.48)	N/A
ETH	25.00307403 (new)	$101,697.48 (new)	+$2,842.70 (today’s PNL)
USDC	10,151.17 (-10,033.57)	$10,151.17 (-$10,033.57)	$0.00 (0)
TON	504.91 (+0.40)	$1,111.94 (+$26.84)	+$27.26 (today’s PNL)

Positions Entered This Week
#

IBKR: RACE NOV 21 ‘25 410C, UBER NOV 21 ‘25 96C
Binance: ETH

Positions Closed This Week
#

Binance: EURI (removed from portfolio)

Analysis/Notes
#

The IBKR portfolio grew by $1.78K (+2.71%) driven mainly by gains in RACE (+$1.1K) and UBER (+$0.88K). The IE00B1B82251 ETF also added $16. New short call options on RACE and UBER were established, reflecting a bearish outlook on near‑term upside while generating premium income (though the RACE call shows a small loss due to price movement).

Trading Week 2025-10-19

Sun, 19 Oct 2025 18:00:00 +0200

Weekly Trading Analysis: October 13-19, 2025
#

Weekly Summary
#

The portfolio experienced a mixed week with overall slight appreciation but persistent unrealized losses across most positions.

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$65,660	$64,970	+$690	+1.06%
Binance Portfolio Value	$238,738.63	$238,589.27	+$149.36	+0.06%
Total Portfolio Value	$304,398.63	$303,559.27	+$839.36	+0.28%
IBKR Unrealized P&L	-$17,570	-$19,400	+$1,830	+9.43%
IBKR Buying Power	$186,400	$234,500	-$48,100	-20.51%

Cash Overview (IBKR):

Trading Week 2025-10-12

Sun, 12 Oct 2025 18:00:00 +0200

Weekly Trading Analysis - Week Ending October 12, 2025
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$64,970	$65,280	-$310	-0.47%
IBKR Buying Power	$234,500	$349,400	-$114,900	-32.86%
IBKR Unrealized P&L	-$19,400	-$18,620	-$780	-4.19%
Binance Portfolio (USDC)	$238,589.27	$238,802.26	-$212.99	-0.09%
Total Portfolio Value	$303,559.27	$304,082.26	-$522.99	-0.17%

Note: IBKR cash balances not visible in current week screenshot. Previous week showed EUR cash: $1,900, USD cash: $20,200, Total cash: $22,100.

Trading Week 2025-10-05

Sun, 05 Oct 2025 18:00:00 +0200

Weekly Trading Analysis - Week Ending 2025-10-05
#

Weekly Summary
#

Metric	This Week	Last Week	Change ($)	Change (%)
IBKR Portfolio Value	$65,280	-	-	-
IBKR Unrealized P&L	-$18,620	-	-	-
IBKR Cash Balance	$22,100	-	-	-
Binance Portfolio Value (USDC)	$238,802.26	-	-	-
Total Portfolio Value	$306,182.26	-	-	-

Note: Previous week data not available for comparison. This is the first week of tracked analysis.

locals.tf

A Transaction Is a Point in Time

A Transaction Is a Point in Time #

The Differential: Fourteen Ways a Key-Value Store Lied to Kubernetes

The Differential: Fourteen Ways a Key-Value Store Lied to Kubernetes #

A Point Is Not a Prefix: The Life and Times of a Four-Month-Old Bug

A Point Is Not a Prefix: The Life and Times of a Four-Month-Old Bug #

The Two-Minute Loop: Hunting a Control Plane That Never Sleeps

The Two-Minute Loop: Hunting a Control Plane That Never Sleeps #

Trading Week 2026-10-18

Weekly Trading Analysis – Week Ending 2026-10-18 #

1. Weekly Summary #

Trading Week 2026-10-11

Weekly Trading Analysis - Week Ending 2026-10-11 #

1. Weekly Summary #

The Turing Machine Is Not a CPU: OpenAI's n log n Multiplication on AVX2

The Turing Machine Is Not a CPU: OpenAI’s n log n Multiplication on AVX2 #

Integer Multiplication Below n log n: Mining the Constants, and Why the Real Saving Is Cubic

Integer Multiplication Below n log n: Mining the Constants, and Why the Real Saving Is Cubic #

Trading Week 2026-10-05

Weekly Summary #

Open Positions #

IBKR Positions #

Binance Positions #

Positions Entered This Week #

Recovering a Tuya Local Key Without the Cloud (and Reimplementing the App API)

Recovering a Tuya Local Key Without the Cloud (and Reimplementing the App API) #

Introduction #

Trading Week 2026-09-27

Weekly Trading Analysis — Week Ending 2026-09-27 #

1. Weekly Summary #

Trading Week 2026-09-20

Weekly Trading Analysis — Week Ending 2026-09-20 #

1. Weekly Summary #

The Centre Held: From a Silent Boot to 9.9 Gbit/s and a Safer Jumbo Path

The Centre Held: From a Silent Boot to 9.9 Gbit/s and a Safer Jumbo Path #

Trading Week 2026-09-13

Weekly Trading Analysis — Week Ending 2026-09-13 #

1. Weekly Summary #

The Center Cannot Hold: Porting RSS to a Router That Hangs at Boot

The Center Cannot Hold: Porting RSS to a Router That Hangs at Boot #

Trading Week 2026-09-06

Weekly Trading Analysis – Week Ending 2026-09-06 #

1. Weekly Summary #

Trading Week 2026-08-30

Weekly Trading Analysis — Week Ending 2026-08-30 #

1. Weekly Summary #

Defeating AWS WAF Challenges in Pure Node.js (No Browser)

Defeating AWS WAF Challenges in Pure Node.js (No Browser) #

Introduction #

Trading Week 2026-08-23

Weekly Trading Analysis - Week Ending 2026-08-23 #

Weekly Summary #

HA Not Supported: Rebuilding a Bitbucket DC Migration Export from REST Alone

TL;DR #

A Clock 4 Minutes Behind: Rolling NTP Time Sync Across the Home LAN

TL;DR #

The SSH Reset That Wasn't the ISP: A Router Flowtable Ghost Story

TL;DR #

Trading Week 2026-08-16

Weekly Trading Analysis — Week Ending 2026-08-16 #

1. Weekly Summary #

Portfolio Value by Account #

Account Metrics #

Roswell, Majestic-12, and the Transistor: A Skeptic Deep Dive into Reverse Engineering Theory

TL;DR #

Chasing a Laggy MX Master 3 on a Passively Cooled ODROID-H2

TL;DR #

Trading Week 2026-08-09

Weekly Trading Analysis — Week Ending 2026-08-09 #

Weekly Summary #

Trading Week 2026-08-02

Weekly Summary #

Trading Week 2026-07-26

Weekly Trading Analysis – Week Ending July 26, 2026 #

1. Weekly Summary #

Trading Week 2026-07-19

Weekly Trading Analysis #

Week Ending 2026-07-19 #

Weekly Summary #

A Transaction Is a Point in Time
#

The Differential: Fourteen Ways a Key-Value Store Lied to Kubernetes
#

A Point Is Not a Prefix: The Life and Times of a Four-Month-Old Bug
#

The Two-Minute Loop: Hunting a Control Plane That Never Sleeps
#

Weekly Trading Analysis – Week Ending 2026-10-18
#

1. Weekly Summary
#

Weekly Trading Analysis - Week Ending 2026-10-11
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1. Weekly Summary
#

The Turing Machine Is Not a CPU: OpenAI’s n log n Multiplication on AVX2
#

Integer Multiplication Below `n log n`: Mining the Constants, and Why the Real Saving Is Cubic
#

Weekly Summary
#

Open Positions
#

IBKR Positions
#

Binance Positions
#

Positions Entered This Week
#

Recovering a Tuya Local Key Without the Cloud (and Reimplementing the App API)
#

Introduction
#

Weekly Trading Analysis — Week Ending 2026-09-27
#

1. Weekly Summary
#

Weekly Trading Analysis — Week Ending 2026-09-20
#

1. Weekly Summary
#

The Centre Held: From a Silent Boot to 9.9 Gbit/s and a Safer Jumbo Path
#

Weekly Trading Analysis — Week Ending 2026-09-13
#

1. Weekly Summary
#

The Center Cannot Hold: Porting RSS to a Router That Hangs at Boot
#

Weekly Trading Analysis – Week Ending 2026-09-06
#

1. Weekly Summary
#

Weekly Trading Analysis — Week Ending 2026-08-30
#

1. Weekly Summary
#

Defeating AWS WAF Challenges in Pure Node.js (No Browser)
#

Introduction
#

Weekly Trading Analysis - Week Ending 2026-08-23
#

Weekly Summary
#

TL;DR
#

TL;DR
#

TL;DR
#

Weekly Trading Analysis — Week Ending 2026-08-16
#

1. Weekly Summary
#

Portfolio Value by Account
#

Account Metrics
#

TL;DR
#

TL;DR
#

Weekly Trading Analysis — Week Ending 2026-08-09
#

Weekly Summary
#

Weekly Summary
#

Weekly Trading Analysis – Week Ending July 26, 2026
#

1. Weekly Summary
#

Weekly Trading Analysis
#

Week Ending 2026-07-19
#

Weekly Summary
#

Account Breakdown
#

Additional Metrics (IBKR)
#

Open Positions – IBKR
#

Weekly Trading Analysis: Week Ending 2026-07-12
#

Weekly Summary
#

The Progress Request That Never Arrived
#

Table of Contents
#

Background: The Idle Cluster That Wasn’t
#

Weekly Trading Recap: July 5, 2026
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1. Weekly Summary
#

Weekly Trading Analysis: June 22 - June 28, 2026
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Weekly Summary
#

Optimizing a Rust etcd KV Store: From 61% Overhead to 3% CPU in ~2 Weeks
#

Table of Contents
#

Background: The Problem with kine
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Weekly Trading Analysis: June 21, 2026
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Weekly Summary
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Weekly Trading Analysis - Week Ending June 14, 2026
#

Weekly Summary
#

Fixing Kubelet Eviction Log Spam on ZFS: A Better Patch for containerfs.inodesFree
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Weekly Trading Analysis - Week Ending June 7, 2026
#

Weekly Summary
#

IBKR Positions
#

Binance Positions
#

Positions Entered This Week
#

Positions Closed This Week
#

Weekly Trading Analysis - Week Ending May 31, 2026
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Weekly Summary
#

Optimizing a Java SIMD IPv6 Parser: From 7 M/s to 118 M/s in 17 Iterations
#

Table of Contents
#