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SubjectRe: [PATCH 1/4] vmscan: simplify shrink_inactive_list()
On Fri, Apr 16, 2010 at 09:40:13AM +1000, Dave Chinner wrote:
> On Thu, Apr 15, 2010 at 06:54:16PM +0200, Andi Kleen wrote:
> > > It's a buying-time venture, I'll agree but as both approaches are only
> > > about reducing stack stack they wouldn't be long-term solutions by your
> > > criteria. What do you suggest?
> >
> > (from easy to more complicated):
> >
> > - Disable direct reclaim with 4K stacks
>
> Just to re-iterate: we're blowing the stack with direct reclaim on
> x86_64 w/ 8k stacks.

Yep, that is not being disputed. By the way, what did you use to
generate your report? Was it CONFIG_DEBUG_STACK_USAGE or something else?
I used a modified bloat-o-meter to gather my data but it'd be nice to
be sure I'm seeing the same things as you (minus XFS unless I
specifically set it up).

> The old i386/4k stack problem is a red
> herring.
>
> Cheers,
>
> Dave.
> --
> Dave Chinner
> david@fromorbit.com
>

--
Mel Gorman
Part-time Phd Student Linux Technology Center
University of Limerick IBM Dublin Software Lab


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