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Re: Debian Hurd clock precision

On Thu, Jul 27, 2017 at 11:39:21PM +0100, James Cowgill wrote:
> While debugging a timing problem with FFmpeg on Hurd, I noticed that the
> "clock" function has a far lower precision on Hurd than it does on
> Linux, even though CLOCKS_PER_SEC is 1000000 on both. Why is this?
> I also found this patch to libc which may be responsible:
> hurd-i386/unsubmitted-clock_t_centiseconds.diff
> I'm not entirely sure why patching libc is appropriate to fix the
> claimed issues.

The patch has nothing to do with precision. The kernel simply doesn't
have any high resolution timing system, whereas Linux does.

Richard Braun

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