Re: [RFC v3 00/13] vfs: hot data tracking
From: Zhi Yong Wu
Date: Thu Oct 18 2012 - 00:44:39 EST
On Thu, Oct 18, 2012 at 12:29 PM, Dave Chinner <david@xxxxxxxxxxxxx> wrote:
> On Wed, Oct 17, 2012 at 04:57:14PM +0800, Zhi Yong Wu wrote:
>> On Tue, Oct 16, 2012 at 4:42 AM, Dave Chinner <david@xxxxxxxxxxxxx> wrote:
>> > On Wed, Oct 10, 2012 at 06:07:22PM +0800, zwu.kernel@xxxxxxxxx wrote:
>> >> From: Zhi Yong Wu <wuzhy@xxxxxxxxxxxxxxxxxx>
> ....
>> > (*) Tested on an empty 17TB XFS filesystem with:
>> >
>> > $ sudo mkfs.xfs -f -l size=131072b,sunit=8 /dev/vdc
>> > meta-data=/dev/vdc isize=256 agcount=17, agsize=268435455 blks
>> > = sectsz=512 attr=2, projid32bit=0
>> > data = bsize=4096 blocks=4563402735, imaxpct=5
>> > = sunit=0 swidth=0 blks
>> > naming =version 2 bsize=4096 ascii-ci=0
>> > log =internal log bsize=4096 blocks=131072, version=2
>> > = sectsz=512 sunit=1 blks, lazy-count=1
>> > realtime =none extsz=4096 blocks=0, rtextents=0
>> > $ sudo mount -o logbsize=256k /dev/vdc /mnt/scratch
>> > $ sudo chmod 777 /mnt/scratch
>> > $ fs_mark -D 10000 -S0 -n 100000 -s 1 -L 63 -d \
>> > /mnt/scratch/0 -d /mnt/scratch/1 -d /mnt/scratch/2 -d \
>> > /mnt/scratch/3 -d /mnt/scratch/4 -d /mnt/scratch/5 -d \
>> > /mnt/scratch/6 -d /mnt/scratch/7
>> > .....
>> > 0 21600000 1 16679.3 12552262
>> > 0 22400000 1 15412.4 12588587
>> > 0 23200000 1 16367.6 14199322
>> > 0 24000000 1 15680.4 15741205
>> > <hangs here w/ OOM>
>> ^^^^In this test, i haven't see you enable hot_track function via
>> mount, why did it meet OOM?
>
> I copied the wrong mount command. It was definitely enabled.
OK, BTW: fs_mark is the script written by you? After xfsprogs is
installed, i haven't found this command.
>
> Cheers,
>
> Dave.
>
> --
> Dave Chinner
> david@xxxxxxxxxxxxx
--
Regards,
Zhi Yong Wu
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