linux-kernel - Re: Regression from 2.6.36

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Message-ID: <1302872460.12428.27.camel@machina.109elm.lan>
Date:	Fri, 15 Apr 2011 14:01:00 +0100
From:	Mel Gorman <mgorman@...e.de>
To:	azurIt <azurit@...ox.sk>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Changli Gao <xiaosuo@...il.com>,
	Am?rico Wang <xiyou.wangcong@...il.com>,
	Jiri Slaby <jslaby@...e.cz>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
	Jiri Slaby <jirislaby@...il.com>
Subject: Re: Regression from 2.6.36

On Fri, 2011-04-15 at 13:36 +0200, azurIt wrote:
> sysfs was already mounted:
> 
> # mount
> sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
> 
> 
> I have enabled all of the options you suggested and also CONFIG_DEBUG_FS ;) I will boot new kernel this night. Hope it won't degraded performance much..
> 

It's only for curiousity's sake. As you report the patch fixes the
problem, it matches the theory that it's allocator latency. The script
would confirm it for sure, but it's not a high priority.

-- 
Mel Gorman
SUSE Labs

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