linux-kernel - Re: [PATCH v2] sched: Accelerate "pick_next

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Message-ID: <4F24E804.5090808@linux.vnet.ibm.com>
Date:	Sun, 29 Jan 2012 14:32:36 +0800
From:	Michael Wang <wangyun@...ux.vnet.ibm.com>
To:	Cong Wang <xiyou.wangcong@...il.com>
CC:	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Xiaotian Feng <xtfeng@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] sched: Accelerate "pick_next_entity" under special
 condition

On 01/27/2012 12:42 PM, Cong Wang wrote:

> On 01/27/2012 09:22 AM, Michael Wang wrote:
>> Hi, Ingo
>>
>> Thanks for your reply.
>>
>> I have try use "ls -l" to see the size of sched.o, but after applied the
>> patch, it is still 1636.
>>
>> I have not use this method before, may be I use the wrong command...
>>
>> But I think the new code should be similar to the old one after compile,
>> because we still have 3 condition check here.
>>
>> I suppose the new sched.o will be a little bigger, because one jump
>> command and a label need to be added.
>>
> 
> Try to see if `size` helps.

Hi, Cong

Thanks for your advise, but still, the size not changed.

And also I don't know whether the size can be some kind of proof to
confirm the performance improvement in this case...

Thanks,
Michael Wang

> 


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