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
