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SubjectRe: [PATCH 01/02] cpuset memory spread slab cache filesys
Date
On Wednesday 01 March 2006 19:27, Paul Jackson wrote:
> > > 1) Are you content to have such a interleave of these particular file
> > > i/o slabs triggered by a mm/mempolicy.c option? Or do you think
> > > we need some sort of task external API to invoke this policy?
> >
> > Task external. mempolicy.c has no good way to handle multiple policies
> > like this. I was thinking of a simple sysctl
>
> No need to implement a sysctl for this. The current cpuset facility
> should provide just what you want, if I am understanding correctly.

The main reason i'm reluctant to use this is that the cpuset fast path
overhead (e.g. in memory allocators etc.) is quite large and I wouldn't like
to recommend people to enable all this overhead by default just to get
more useful dcache/inode behaviour on small NUMA systems.

-Andi
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