[lkml]   [2006]   [Jul]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: CFQ will be the new default IO scheduler - why?
Justin Piszcz wrote:
> On Mon, 24 Jul 2006, Matthias Andree wrote:
> > On Sun, 23 Jul 2006, Paa Paa wrote:
> >> The default IO scheduler in 2.6.18 will be CFQ (Complete Fair Queuing)
> >> instead of AS (Anticipatory Scheduler) as described here:
> >> I tried to find (here, at
> >> lkml) the discussion about this change with no luck.
> >
> > That wiki document nicely shows the advantage of the scheduler, namely
> > that you have "ionice", which isn't possible for AS or Deadline
> > Schedulers - this allows the operating system to run processes like
> > updatedb with "nice I/O", meaning these hold when you're doing other
> > I/O.
> Should there be a default scheduler per filesystem? As some filesystems
> may perform better/worse with one over another?

It's currently perDevice, and should probably be extended to perMount.



To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2006-07-24 17:59    [W:0.054 / U:6.620 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site