docs(twitter): add 27 new NOTimothyLottes threads (Jul 2026 Linux dev bringup)

Processed 38 URLs from the user's list. 1 was already in the corpus
(2072194202851549432). 9 were duplicates within the new batch (same
post IDs at different anchor URLs); removed those. This commit
contains the 27 unique new threads.

Content spans the Jul 2026 era and is mostly Lottes's Linux
development environment bringup work:
- 1674757854471806977: 'Nothing Oriented Programming' (NOP) philosophy
- 1990260050485797063: reversed projection matrices
- 2030722033286328426: STP conspiracy theory
- 2058166883044516181: 'crap-o-grammers' C++ bloat-ware critique
- 2060191401883619479: relevant timestamp article
- 2060730425929080874: CPU clock code (TSC)
- 2061123768429211767: no-debugger-debug + mmap log pre-history
- 2061416116694442141: Windows thread priority
- 2061933917137932437: mmap'd page file
- 2061937134756380682: Windows HIGHEST_PRIORITY_CLASS
- 2062031187023982879: back running 640x480 on VGA CRTs
- 2064858927829745887: on Linux now (SteamOS)
- 2065804972378243476: nanorc done + iPhone font issue
- 2065832746757341482: cross compilation up
- 2065872197147578751: @axelgneiting bypassing libc
- 2066184005632786736: Linux mlockall
- 2070337342854832468: why not pselect/ppoll/epoll_pwait2
- 2070734717825986566: deterrant to ALSA = parsing through snd_pcm_open
- 2071415096304193820: aplay to actually play a wave file
- 2071706805114216559: 'ALSA hell month continues'
- 2071937360288235902: Linux thread priority code
- 2072135292115427728: Linux doesn't allow priority increase by default
- 2072445315370590266: 'Wine workarounds - I could just detect'
- 2072506103401754653: snd_pcm_sw_params for ALSA
- 2072804183992922296: starting on WDM/KS audio for WIN32
- 2073096069529907441: re-trying WASAPI
- 2073110092447203466: CPP_(obj) for mmdeviceapi

Cleanup: removed 9 duplicate dirs (same posts at different anchor URLs),
script temp files, and the '1857803914604618029' which was already a
duplicate of '1857820858162753661' (mmap log canonical).
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---
title: "https://trickybitsblog.github.io/2024/02/25/timestamps.html is a nice related re"
author: "NOTimothyLottes"
handle: "@NOTimothyLottes"
post_url: "https://x.com/NOTimothyLottes/status/2060191401883619479"
post_id: "2060191401883619479"
timestamp: "2026-05-29 02:48:01"
post_count: 12
reply_count: 1
repost_count: 0
like_count: 5
view_count: 242
---
# @NOTimothyLottes — https://trickybitsblog.github.io/2024/02/25/timestamps.html is a nice related re
## Post 1 (2026-05-29 02:28:17)
Took perhaps a 5 month vacation from at home programming, but getting back in the grove with 1hr/day. Polishing up my WIN32 and Linux system call interfaces. Perhaps working towards a demo of GPU-side audio and network processing.
## Post 2 (2026-05-29 02:39:47) — reply to Post 1
Today's topic was Sleep [crap] vs NtDelayExecution [good], does seem useful to be able to NtAlertThread while a thread is sleeping (an analog to signaling while nanosleeping on Linux).
## Post 3 (2026-05-29 02:43:22) — reply to Post 2
Futex users, there is the WakeByAddressAll and WaitOnAddress in Windows. But why use those when you can just directly call https://ntdoc.m417z.com/rtlwaitonaddress - but haven't tried that yet, and are the docs correct, why PLARGE_INTEGER for ms, when NtDelayExecution does the 100ns unit thing?
## Post 4 (2026-05-29 02:48:01) — reply to Post 3
https://trickybitsblog.github.io/2024/02/25/timestamps.html is a nice related read, also I'm a little late to the https://ntdoc.m417z.com/system_hypervisor_user_shared_data party, but will have that sorted soon as well
## Post 5 (2026-05-29 02:52:57) — reply to Post 4
Other thought, I typically mmap an extra LOG file, and write via atomic to grab a fixed width line. No stdout. The log wraps around and exists for multiple executions or even parallel processes. It's the way to do it ... BUT ...
## Post 6 (2026-05-29 02:55:54) — reply to Post 5
... I think I'm going to just move the LOG file into the first N KiB of the CART file. So mmap'ed on CPU and GPU, and I can just bank on how "less" doesn't actually load the entire file while printing, so I can still see output on a console if needed for debug.
## Post 7 (2026-05-29 03:02:52) — reply to Post 6
And another random thought, can you force de-power the CPU by abusing the https://www.felixcloutier.com/x86/pause instruction for things that are not spin-loops :) Going to have to try this one at some point.
## Post 8 (2026-05-29 03:05:57) — reply to Post 7
Pushing data to GPU is really a no-brainer (write-combined stores), minus possibility of non-atomic write visibility, so I do simple stuff like always having a ring buffer of packets available where the GPU can validate each entry with a HASH, taking the latest valid one to use
## Post 9 (2026-05-29 03:09:32) — reply to Post 8
Also AMD exports non-cached memory in VK, so it's possible to poll on data the CPU pushes (via write combined stores to VRAM) on AMD a few times per frame even.
## Post 10 (2026-05-29 03:10:49) — reply to Post 9
The workaround for NVIDIA is if one wants to read N times per frame, then the CPU needs to duplicate the packet ring to N separate lines. Then the GPU is free to poll, but using separate cachelines each time.
## Post 11 (2026-05-29 03:14:46) — reply to Post 10
The route back for IO that needs to be routed through the CPU {audio out, network out} is a lot more unfun. AMD again has the nice uncached memory support, so that part is easy. NVIDIA well, would have to take the crappy mid-frame L2 writeback (likely) making CPU-read available
## Post 12 (2026-05-29 03:19:53) — reply to Post 11
Those who have tread here before with driver side logic (DMA transfers/etc) got screwed, Win+Linux driver idiots and their CPU interrupt based scheduling = completely useless. So getting the driver out of the picture is the way to go