Re: [PATCH] VM: add vm.free_node_memory sysctl

[Martin Hicks]

On Wed, Aug 03, 2005 at 04:15:29PM +0200, Andi Kleen wrote:
> On Wed, Aug 03, 2005 at 09:56:46AM -0400, Martin Hicks wrote:
> > 
> > Here's the promised sysctl to dump a node's pagecache.  Please review!
> > 
> > This patch depends on the zone reclaim atomic ops cleanup:
> > http://marc.theaimsgroup.com/?l=linux-mm&m=112307646306476&w=2
> 
> Doesn't numactl --bind=node memhog nodesize-someslack do the same?
> 
> It just might kick in the oom killer if someslack is too small
> or someone has unfreeable data there. But then there should be 
> already an sysctl to turn that one off.

Doesn't the memhog hack also cause the machine to swap a lot?  The
zone_reclaim() path doesn't let the memory reclaim code swap.

mh

-- 
Martin Hicks   ||   Silicon Graphics Inc.   ||   mort@xxxxxxx
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