linux-kernel - Re: [LKP] [ext4] fde872682e: fsmark.files_per

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Message-ID: <CAC=cRTO8RC0kEz9B-vx5sO=6uXwsu2tE9rd_NKH1XjVRr9easA@mail.gmail.com>
Date:   Wed, 13 Mar 2019 15:26:39 +0800
From:   huang ying <huang.ying.caritas@...il.com>
To:     kernel test robot <rong.a.chen@...el.com>
Cc:     "Theodore Ts'o" <tytso@....edu>,
        LKML <linux-kernel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        LKP ML <lkp@...org>, Huang Ying <ying.huang@...el.com>
Subject: Re: [LKP] [ext4] fde872682e: fsmark.files_per_sec -38.0% regression

Hi, Ted,

On Wed, Jan 2, 2019 at 8:40 AM kernel test robot <rong.a.chen@...el.com> wrote:
>
> Greeting,
>
> FYI, we noticed a -38.0% regression of fsmark.files_per_sec due to commit:
>
>
> commit: fde872682e175743e0c3ef939c89e3c6008a1529 ("ext4: force inode writes when nfsd calls commit_metadata()")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

It appears that this is a performance regression caused by a
functionality fixing.  So we should ignore this?

Best Regards,
Huang, Ying