linux-kernel - Re: Why blktrace didn't trace requests merge?

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Message-ID: <505765F2.1000707@gmail.com>
Date:	Mon, 17 Sep 2012 14:03:30 -0400
From:	KOSAKI Motohiro <kosaki.motohiro@...il.com>
To:	Tejun Heo <tj@...nel.org>
CC:	Steven Rostedt <rostedt@...dmis.org>,
	Jianpeng Ma <majianpeng@...il.com>,
	fweisbec <fweisbec@...il.com>, mingo <mingo@...hat.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Li Zefan <lizf@...fujitsu.com>, Tao Ma <boyu.mt@...bao.com>,
	Jens Axboe <axboe@...nel.dk>, kosaki.motohiro@...il.com
Subject: Re: Why blktrace didn't trace requests merge?

(9/17/12 1:55 PM), Tejun Heo wrote:
> (cc'ing Jens)
> 
> On Mon, Sep 17, 2012 at 09:22:28AM -0400, Steven Rostedt wrote:
>> On Mon, 2012-09-17 at 19:33 +0800, Jianpeng Ma wrote:
>>> Hi all:
>>> 	I used blktrace to trace some io.But i can't find requests merge. I searched the code and did't not find.
>>> 	Why? 
>>> 									
>>
>> No idea. I don't use blktrace much, but I Cc'd those that understand it
>> better than I.

backmerge/fronmerge event?

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