Re: [RFC v3 00/13] vfs: hot data tracking

From: Zhi Yong Wu
Date: Thu Oct 18 2012 - 01:24:05 EST


On Thu, Oct 18, 2012 at 1:17 PM, Dave Chinner <david@xxxxxxxxxxxxx> wrote:
> On Thu, Oct 18, 2012 at 12:44:47PM +0800, Zhi Yong Wu wrote:
>> 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.
>
> # apt-get install fsmark
thanks. let me try.
>
> Or get the source here:
>
> http://sourceforge.net/projects/fsmark/
>
> Cheers,
>
> Dave.
> --
> Dave Chinner
> david@xxxxxxxxxxxxx



--
Regards,

Zhi Yong Wu
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/