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Date: Thu, 18 Oct 2012 16:17:03 +1100 From: Dave Chinner <david@...morbit.com> To: Zhi Yong Wu <zwu.kernel@...il.com> Cc: linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org, linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org, linuxram@...ux.vnet.ibm.com, viro@...iv.linux.org.uk, dave@...os.cz, tytso@....edu, cmm@...ibm.com, Zhi Yong Wu <wuzhy@...ux.vnet.ibm.com> Subject: Re: [RFC v3 00/13] vfs: hot data tracking 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@...morbit.com> 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@...morbit.com> wrote: > >> > On Wed, Oct 10, 2012 at 06:07:22PM +0800, zwu.kernel@...il.com wrote: > >> >> From: Zhi Yong Wu <wuzhy@...ux.vnet.ibm.com> > > .... > >> > (*) 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 Or get the source here: http://sourceforge.net/projects/fsmark/ Cheers, Dave. -- Dave Chinner david@...morbit.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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