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Subject: Re: Stolen and degraded time and schedulers
From: Daniel Walker <dwalker@mvista.com>
To: Jeremy Fitzhardinge <jeremy@goop.org>
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Date: Wed, 14 Mar 2007 14:34:25 -0700
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On Wed, 2007-03-14 at 14:16 -0700, Jeremy Fitzhardinge wrote:

> 
> >  It's also used for some posix cpu timers
> > (sched_ns) , and it used for migration thread initialization.
> 
> sched_ns doesn't use it directly except for the case where the process
> is currently running.  Anyway, it's compatible with what I'm talking about.

It's used for measuring execution time, but timers are triggered based
on that time, so it needs to be actual execution time. I don't know to
what extent this is already inaccurate on some system tho.

Daniel