linux-kernel - Re: [LKP] [lkp] [f2fs] ec795418c4: fsmark.files_per

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Date:	Fri, 12 Aug 2016 09:22:38 +0800
From:	Jaegeuk Kim <jaegeuk@...nel.org>
To:	"Huang, Ying" <ying.huang@...el.com>
Cc:	kernel test robot <xiaolong.ye@...el.com>, lkp@...org,
	LKML <linux-kernel@...r.kernel.org>,
	linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [LKP] [lkp] [f2fs] ec795418c4: fsmark.files_per_sec -36.3%
 regression

On Thu, Aug 11, 2016 at 03:49:41PM -0700, Huang, Ying wrote:
> Hi, Kim,
> 
> "Huang, Ying" <ying.huang@...el.com> writes:
> >>
> >> [lkp] [f2fs] 3bdad3c7ee: aim7.jobs-per-min -25.3% regression
> >> [lkp] [f2fs] b93f771286: aim7.jobs-per-min -81.2% regression
> >>
> >> In terms of the above regression, I could check that _reproduce_ procedure
> >> includes mounting filesystem only. Is that correct?
> >
> > Sorry, our test system failed to generate reproduce steps for aim7.  We
> > will implement it.
> >
> > - [lkp] [f2fs] 3bdad3c7ee: aim7.jobs-per-min -25.3% regression
> >
> > The disk is one 48G ram disk.  The steps for aim7 is,
> >
> > cat > workfile <<EOF
> > FILESIZE: 1M
> > POOLSIZE: 10M
> > 10 disk_cp
> > EOF
> >
> > (
> > 	echo $HOSTNAME
> > 	echo disk_cp
> >
> > 	echo 1
> > 	echo 3000
> > 	echo 2
> > 	echo 3000
> > 	echo 1
> > ) | ./multitask -t &
> >
> >
> > - [lkp] [f2fs] b93f771286: aim7.jobs-per-min -81.2% regression
> >
> > The disk is 4 12G ram disk, and setup RAID0 on them via mdadm.  The
> > steps for aim7 is,
> >
> > cat > workfile <<EOF
> > FILESIZE: 1M
> > POOLSIZE: 10M
> > 10 sync_disk_rw
> > EOF
> >
> > (
> > 	echo $HOSTNAME
> > 	echo sync_disk_rw
> >
> > 	echo 1
> > 	echo 600
> > 	echo 2
> > 	echo 600
> > 	echo 1
> > ) | ./multitask -t &
> 
> Any update on these 2 regressions?  Is the information is enough for you
> to reproduce?

Sorry, I've had no time to dig this due to business travel now.
I'll check that when back to US.

Thanks,

> 
> Best Regards,
> Huang, Ying