Re: nanosleep

Robert Love
2002-04-10T05:57:19Z

On Wed, 2002-04-10 at 00:41, mark manning wrote:

> thanx - how much of a difference should i expect - i know the syscall is
> asking for at least the required ammount but that the task switcher might
> not give me control back for a while after the requested delay but i was
> expecting to be a little closer to what i had asked for - this isnt critical
> of corse but i would like to know what to expect.

The minimum granularity of the timer is 1/HZ, which on a i386 is only
10ms.

If you want high-resolution timers, check out the high-res-timers
project at http://high-res-timers.sf.net/ - they implement POSIX timers
(which include a nanosleep call) with very high resolution (1/cpu
clock).

Robert Love