Re: [RFC 5/8] Make writeout during reclaim cpuset aware

From: Christoph Lameter
Date: Tue Jan 16 2007 - 23:23:35 EST


On Wed, 17 Jan 2007, Andi Kleen wrote:

> On Tuesday 16 January 2007 16:48, Christoph Lameter wrote:
> > Direct reclaim: cpuset aware writeout
> >
> > During direct reclaim we traverse down a zonelist and are carefully
> > checking each zone if its a member of the active cpuset. But then we call
> > pdflush without enforcing the same restrictions. In a larger system this
> > may have the effect of a massive amount of pages being dirtied and then
> > either
>
> Is there a reason this can't be just done by node, ignoring the cpusets?

We want to writeout dirty pages that help our situation. Those are located
on the nodes of the cpuset.
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