Re: [PATCH 0/3] Shrinkers and proportional reclaim

[Mel Gorman <mgorman@suse.de>]

On Fri, May 23, 2014 at 12:14:16AM +0800, Yuanhan Liu wrote:
> On Thu, May 22, 2014 at 10:09:36AM +0100, Mel Gorman wrote:
> > This series is aimed at regressions noticed during reclaim activity. The
> > first two patches are shrinker patches that were posted ages ago but never
> > merged for reasons that are unclear to me. I'm posting them again to see if
> > there was a reason they were dropped or if they just got lost. Dave?  Time?
> > The last patch adjusts proportional reclaim. Yuanhan Liu, can you retest
> > the vm scalability test cases on a larger machine? Hugh, does this work
> > for you on the memcg test cases?
> 
> Sure, and here is the result. I applied these 3 patches on v3.15-rc6,
> and head commit is 60c10afd. e82e0561 is the old commit that introduced
> the regression.  The testserver has 512G memory and 120 CPU.
> 
> It's a simple result; if you need more data, I can gather them and send
> it to you tomorrow:
> 
> e82e0561        v3.15-rc6       60c10afd
> ----------------------------------------
> 18560785        12232122        38868453
>                 -34%            +109
> 
> As you can see, the performance is back, and it is way much better ;)
> 

Thanks a lot for that and the quick response. It is much appreciated.

-- 
Mel Gorman
SUSE Labs

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