linux-kernel - Re: 2.6.19-rc5-mm1 progression

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Date:	Mon, 04 Dec 2006 21:32:59 -0600
From:	Larry Finger <Larry.Finger@...inger.net>
To:	Andrew Morton <akpm@...l.org>
CC:	Benoit Boissinot <bboissin@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.19-rc5-mm1 progression

Andrew Morton wrote:
> On Fri, 24 Nov 2006 17:36:27 +0100
> "Benoit Boissinot" <bboissin@...il.com> wrote:
> 
>> On 11/24/06, Larry Finger <Larry.Finger@...inger.net> wrote:
>>> Is there the equivalent of 'git bisect' for the -mmX kernels?
>>>
>> http://www.zip.com.au/~akpm/linux/patches/stuff/bisecting-mm-trees.txt
>>
> 
> Please take the time to do that.  Yours is an interesting report - I'm not
> aware of anything in there which was expected to cause a change of this
> mature.
> 

There are at least two patches in 2.6.19-rc5-mm2 that make my system much more responsive for 
interactive jobs. The one that has the majority of the effect is:

radix-tree-rcu-lockless-readside.patch

I have not been able to isolate the second patch, which has the lesser effect. All I can say is that 
it occurred before the above patch in patches/series. This patch was tested against 2.6.19 and fixed 
most of the problem on that version.

Larry Finger


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