lkml.org 
[lkml]   [2007]   [Aug]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: CFS review
On Wed, Aug 01, 2007 at 04:36:24PM +0200, Ingo Molnar wrote:
>
> * Roman Zippel <zippel@linux-m68k.org> wrote:
>
> > > jiffies based sched_clock should be soon very rare. It's probably
> > > not worth optimizing for it.
> >
> > I'm not so sure about that. sched_clock() has to be fast, so many
> > archs may want to continue to use jiffies. [...]
>
> i think Andi was talking about the vast majority of the systems out
> there. For example, check out the arch demography of current Fedora
> installs (according to the Smolt opt-in UUID based user metrics):

I meant that in many cases where the TSC is considered unreliable
today it'll be possible to use it anyways at least for sched_clock()
(and possibly even gtod())

The exception would be system which really have none, but there
should be very few of those.

-Andi
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-08-01 18:15    [W:0.440 / U:35.208 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site