Re: [RFC][PATCH 6/14] memcg: lockless page cgroup

[Balbir Singh <balbir@linux.vnet.ibm.com>]

KAMEZAWA Hiroyuki wrote:
> On Tue, 9 Sep 2008 17:11:54 +0900
> Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> wrote:
>>> I'm sorry to say that I'll have to postpone this to remove
>>> page->page_cgroup pointer. I need some more performance-improvement
>>> effort to remove page->page_cgroup pointer without significant overhead.
>>>
>> No problem. I know about that :)
>>
> This is the latest result of lockless series. (on rc5-mmtom)
> (Don't trust shell script result...it seems too slow.)
> 
> ==on 2cpu/1socket x86-64 host==
> rc5-mm1
> ==
> Execl Throughput                           3006.5 lps   (29.8 secs, 3 samples)
> C Compiler Throughput                      1006.7 lpm   (60.0 secs, 3 samples)
> Shell Scripts (1 concurrent)               4863.7 lpm   (60.0 secs, 3 samples)
> Shell Scripts (8 concurrent)                943.7 lpm   (60.0 secs, 3 samples)
> Shell Scripts (16 concurrent)               482.7 lpm   (60.0 secs, 3 samples)
> Dc: sqrt(2) to 99 decimal places         124804.9 lpm   (30.0 secs, 3 samples)
> 
> lockless
> ==
> Execl Throughput                           3035.5 lps   (29.6 secs, 3 samples)
> C Compiler Throughput                      1010.3 lpm   (60.0 secs, 3 samples)
> Shell Scripts (1 concurrent)               4881.0 lpm   (60.0 secs, 3 samples)
> Shell Scripts (8 concurrent)                947.7 lpm   (60.0 secs, 3 samples)
> Shell Scripts (16 concurrent)               485.0 lpm   (60.0 secs, 3 samples)
> Dc: sqrt(2) to 99 decimal places         125437.9 lpm   (30.0 secs, 3 samples)
> ==
> 
> I'll try to build "remove-page-cgroup-pointer" patch on this
> and see what happens tomorrow. (And I think my 8cpu box will come back..

Looks good so far. Thanks for all the testing!

-- 
	Balbir

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