From: Mel Gorman <mgorman@techsingularity.net>
To: Xing Zhengjun <zhengjun.xing@linux.intel.com>
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: Mon, 12 Oct 2020 09:18:25 +0100 [thread overview]
Message-ID: <20201012081825.GR3227@techsingularity.net> (raw)
In-Reply-To: <6b301f34-f8fe-c626-e5e5-9af5c257c5c3@linux.intel.com>
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.
--
Mel Gorman
SUSE Labs
next prev parent reply other threads:[~2020-10-12 8:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-06 1:20 [fs] b6509f6a8c: will-it-scale.per_thread_ops -12.6% regression kernel test robot
2020-10-12 6:20 ` [LKP] " Xing Zhengjun
2020-10-12 8:18 ` Mel Gorman [this message]
2020-10-13 1:47 ` Xing Zhengjun
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