From: Xing Zhengjun <zhengjun.xing@linux.intel.com>
To: Mel Gorman <mgorman@techsingularity.net>
Cc: kernel test robot <rong.a.chen@intel.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Maxim Levitsky <mlevitsk@redhat.com>,
LKML <linux-kernel@vger.kernel.org>,
lkp@lists.01.org
Subject: Re: [LKP] [fs] b6509f6a8c: will-it-scale.per_thread_ops -12.6% regression
Date: Tue, 13 Oct 2020 09:47:30 +0800 [thread overview]
Message-ID: <162fe30c-21cb-4d49-15f2-394d48f4cecd@linux.intel.com> (raw)
In-Reply-To: <20201012081825.GR3227@techsingularity.net>
On 10/12/2020 4:18 PM, Mel Gorman wrote:
> On Mon, Oct 12, 2020 at 02:20:26PM +0800, Xing Zhengjun wrote:
>> Hi Mel,
>>
>> It is a revert commit caused the regression, Do you have a plan to fix
>> it? Thanks. I re-test it in v5.9-rc8, the regression still existed.
>>
>
> The revert caused a *performance* regression but the original
> performance gain caused a functional failure. The overall performance
> should be unchanged. I have not revisited the topic since.
>
Thanks for the explanation. We will stop tracking it.
--
Zhengjun Xing
prev parent reply other threads:[~2020-10-13 2:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-06 1:20 kernel test robot
2020-10-12 6:20 ` [LKP] " Xing Zhengjun
2020-10-12 8:18 ` Mel Gorman
2020-10-13 1:47 ` Xing Zhengjun [this message]
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