Re: [PATCH 0/2] memcg make use of new percpu implementations

From: Balbir Singh
Date: Mon Nov 09 2009 - 02:04:41 EST


* KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> [2009-11-06 17:52:42]:

> Hi,
>
> Recent updates on dynamic percpu allocation looks good and I tries to rewrite
> memcg's poor implementation of percpu status counter.
> (It's not NUMA-aware ...)
> Thanks for great works.
>
> For this time. I added Christoph to CC because I'm not fully sure my usage of
> __this_cpu_xxx is correct...I'm glad if you check the usage when you have time.
>
>
> Patch 1/2 is just clean up (prepare for patch 2/2)
> Patch 2/2 is for percpu.
>
> Tested on my 8cpu box and works well.
> Pathcesa are against the latest mmotm.

How do the test results look? DO you see a significant boost? BTW,
I've been experimenting a bit with the earlier percpu counter patches,
I might post an iteration once I have some good results.

--
Balbir
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