linux-kernel - Re: [LKP] [lkp] [dcache_{readdir, dir_lseek}() users] 4e82901cd6: reaim.jobs_per

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Date:	Wed, 01 Jun 2016 09:03:23 +0800
From:	"Huang\, Ying" <ying.huang@...el.com>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	kernel test robot <xiaolong.ye@...el.com>, <lkp@...org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [LKP] [lkp] [dcache_{readdir, dir_lseek}() users] 4e82901cd6: reaim.jobs_per_min -49.1% regression

Al Viro <viro@...IV.linux.org.uk> writes:

> On Tue, May 31, 2016 at 04:15:15PM +0800, kernel test robot wrote:
>> 
>> 
>> FYI, we noticed reaim.jobs_per_min -49.1% regression due to commit:
>> 
>> commit 4e82901cd6d1af21ae232ae835c36d8230c809e8 ("dcache_{readdir,dir_lseek}() users: switch to ->iterate_shared")
>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
>> 
>> in testcase: reaim
>> on test machine: lkp-hsx04: 144 threads Brickland Haswell-EX with 512G memory
>> with following parameters: cpufreq_governor=performance/iterations=4/nr_task=1600%/test=fserver
>
> [snip]
>
> Is there any way to get the profiles?

Sorry, our perf-profile support is broken after upgrading perf-profile
recently.  We will restore it ASAP and send back to you the perf profile
results.

Best Regards,
Huang, Ying