Messages in this thread | | | From | Andi Kleen <> | Subject | Re: [PATCH 01/02] cpuset memory spread slab cache filesys | Date | Tue, 28 Feb 2006 18:13:46 +0100 |
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On Tuesday 28 February 2006 02:56, Paul Jackson wrote: > Hmmm ... your thread with Andi confuses me ... > > Oh well. > > I take it that Andi is suggesting that there be the option to override > the tasks mempolicy, in the particular case of these file i/o slab > caches, with an interleave over the online nodes.
Yep exactly.
> This option would be useful in the case that a system is not using > cpusets, but still wants to spread out these particular (sometimes > large) file i/o caches.
Yep.
> Questions for Andi: > > 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
I guess I can cook up a patch once your code is merged.
> 2) Do you recommend that the page (file buffer) cache also be > interleavable, across all online nodes, if optionally requested, > on systems not using cpusets?
Yes, but as a separate option.
-Andi
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