this post was submitted on 14 May 2025
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crawlio: Tool that slows down I/O operations (github.com)
submitted 2 days ago by Serpent7776 to c/commandline
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Crawlio is a simple C tool that slows down I/O operations by adding a specified amount of time to each I/O call. It uses LD_PRELOAD.

  • Test application behaviour under slow I/O conditions
  • Bring back the dial-up nostalgia
  • Learn how to use LD_PRELOAD
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[–] [email protected] -1 points 2 days ago (2 children)

If only there was some framework that already did this….

[–] ExperimentalGuy 0 points 1 day ago (1 children)

What is it

[–] [email protected] 2 points 1 day ago* (last edited 1 day ago) (1 children)
[–] Serpent7776 1 points 1 day ago

AFAIK you can't do this with BPF as it doesn't have any kind of sleep functionality. I'm also not sure how would you achive this using cgroup, which are about quotas AFAIK.

[–] Serpent7776 0 points 1 day ago

There is?