On Thu, Oct 18, 2012 at 12:29 PM, Dave Chinner [off-list ref] wrote:

On Wed, Oct 17, 2012 at 04:57:14PM +0800, Zhi Yong Wu wrote:

quoted

On Tue, Oct 16, 2012 at 4:42 AM, Dave Chinner [off-list ref] wrote:

quoted

On Wed, Oct 10, 2012 at 06:07:22PM +0800, zwu.kernel@gmail.com wrote:

quoted

From: Zhi Yong Wu <redacted>

....

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quoted

(*) 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@fromorbit.com

-- 
Regards,

Zhi Yong Wu