linux-kernel - Re: [RFC][PATCH] mm: cut down __GFP

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Date:	Wed, 4 May 2011 15:33:32 +0800
From:	Dave Young <hidave.darkstar@...il.com>
To:	Wu Fengguang <fengguang.wu@...el.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Minchan Kim <minchan.kim@...il.com>,
	linux-mm <linux-mm@...ck.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Mel Gorman <mel@...ux.vnet.ibm.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Christoph Lameter <cl@...ux.com>,
	Dave Chinner <david@...morbit.com>,
	David Rientjes <rientjes@...gle.com>
Subject: Re: [RFC][PATCH] mm: cut down __GFP_NORETRY page allocation failures

On Wed, May 4, 2011 at 12:00 PM, Wu Fengguang <fengguang.wu@...el.com> wrote:
>> > CAL:     220449     220246     220372     220558     220251     219740     220043     219968   Function call interrupts
>> >
>> > LOC:     536274     532529     531734     536801     536510     533676     534853     532038   Local timer interrupts
>> > RES:       3032       2128       1792       1765       2184       1703       1754       1865   Rescheduling interrupts
>> > TLB:        189         15         13         17         64        294         97         63   TLB shootdowns
>>
>> Could you tell how to get above info?
>
> It's /proc/interrupts.
>
> I have two lines at the end of the attached script to collect the
> information, and another script to call getdelays on every 10s. The
> posted reclaim delays are the last successful getdelays output.
>
> I've automated the test process, so that with one single command line
> a new kernel will be built and the test box will rerun tests on the
> new kernel :)

Thank you for that effort!

>
> Thanks,
> Fengguang
>



-- 
Regards
dave
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