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---
title: "@axelgneiting The glibc implementation would do that. I bypass libc and just do "
author: "NOTimothyLottes"
handle: "@NOTimothyLottes"
post_url: "https://x.com/NOTimothyLottes/status/2065872197147578751"
post_id: "2065872197147578751"
timestamp: "2026-06-13 19:01:28"
post_count: 2
reply_count: 0
repost_count: 0
like_count: 2
view_count: 198
---

# @NOTimothyLottes — @axelgneiting The glibc implementation would do that. I bypass libc and just do 

## Post 1 (2026-06-13 16:54:17)

Interesting how on this Linux box, scheduling NOPs like nanosleep of 0 and futex waiting on an already set memory location … both take around 60 microseconds, cannot afford to do many of those per millisecond. Food for thought for high fps targets

## Post 2 (2026-06-13 19:01:28)

@axelgneiting The glibc implementation would do that. I bypass libc and just do it manually with perf_event_open syscall and mmap.

![Media 1](./media/2065872197147578751_1.jpg)