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From: Ming Lei <tom.leiming@gmail.com>
Date: Thu, 6 Jul 2017 15:12:31 +0800
Message-ID: <CACVXFVOJcJY3wYbm6LgqSDm021O+Uk-yNm9zcoLeYR+=Rn_bzg@mail.gmail.com>
Subject: Re: [lkp-robot] [scsi] 5c279bd9e4: blogbench.read_score -10.0% regression
To: Ye Xiaolong <xiaolong.ye@intel.com>
Cc: Christoph Hellwig <hch@lst.de>,
        "Martin K. Petersen" <martin.petersen@oracle.com>,
        LKML <linux-kernel@vger.kernel.org>,
        "James E.J. Bottomley" <James.Bottomley@hansenpartnership.com>,
        Linux SCSI List <linux-scsi@vger.kernel.org>, LKP ML <lkp@01.org>
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On Thu, Jul 6, 2017 at 10:54 AM, Ye Xiaolong <xiaolong.ye@intel.com> wrote:
> Hi, Ming Lei
>
> On 07/06, Ming Lei wrote:
>>Hi Xiaolong,
>>
>>On Mon, Jul 3, 2017 at 10:57 AM, kernel test robot
>><xiaolong.ye@intel.com> wrote:
>>>
>>> Greeting,
>>>
>>> FYI, we noticed a -10.0% regression of blogbench.read_score due to commit:
>>
>>Looks like related with mq scheduler, could you test the following patch to see
>>if your issue can be fixed?
>>
>>https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?h=for-linus&id=32825c45ff8f4cce937ab85b030dc693ceb1aa0a
>>
>
> Here is the comparison of commit 5c279bd9e4 and 32825c45, it does help recover
> performance back.

That is great, thanks for your test!

This patch has been in block tree, and will be pushed to v4.13.

Thanks,
Ming

From mboxrd@z Thu Jan  1 00:00:00 1970
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From: Ming Lei <tom.leiming@gmail.com>
To: lkp@lists.01.org
Subject: Re: [lkp-robot] [scsi] 5c279bd9e4: blogbench.read_score -10.0% regression
Date: Thu, 06 Jul 2017 15:12:31 +0800
Message-ID: <CACVXFVOJcJY3wYbm6LgqSDm021O+Uk-yNm9zcoLeYR+=Rn_bzg@mail.gmail.com>
In-Reply-To: <20170706025421.GB5222@yexl-desktop>
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--===============0308356986458846152==
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On Thu, Jul 6, 2017 at 10:54 AM, Ye Xiaolong <xiaolong.ye@intel.com> wrot=
e:
> Hi, Ming Lei
>
> On 07/06, Ming Lei wrote:
>>Hi Xiaolong,
>>
>>On Mon, Jul 3, 2017 at 10:57 AM, kernel test robot
>><xiaolong.ye@intel.com> wrote:
>>>
>>> Greeting,
>>>
>>> FYI, we noticed a -10.0% regression of blogbench.read_score due to comm=
it:
>>
>>Looks like related with mq scheduler, could you test the following patch =
to see
>>if your issue can be fixed?
>>
>>https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/com=
mit/?h=3Dfor-linus&id=3D32825c45ff8f4cce937ab85b030dc693ceb1aa0a
>>
>
> Here is the comparison of commit 5c279bd9e4 and 32825c45, it does help re=
cover
> performance back.

That is great, thanks for your test!

This patch has been in block tree, and will be pushed to v4.13.

Thanks,
Ming

--===============0308356986458846152==--