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Many-metadata performance still at a loss

To: xfs@xxxxxxxxxxx
Subject: Many-metadata performance still at a loss
From: Jan Engelhardt <jengelh@xxxxxxxxxx>
Date: Thu, 10 Mar 2011 15:14:34 +0100 (CET)
User-agent: Alpine 2.01 (LNX 1266 2009-07-14)

Between 2.6.33 and 2.6.37 there was a lot of interesting announcements 
with regards to XFS performance. However, now that I booted into, I still see the metadata slowness from earlier.
(Basically `time (tar -xf linux-2.6.37.tar.gz; sync)` - ext4 gets the 
job done in like 15-20 seconds, xfs is still syncing after 11 minutes.)

Was there something I missed?

# xfs_info /
meta-data=/dev/md3               isize=256    agcount=32, 
agsize=11429117 blks
         =                       sectsz=512   attr=2
data     =                       bsize=4096   blocks=365731739, 
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0
log      =internal               bsize=4096   blocks=32768, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=0
realtime =none                   extsz=4096   blocks=0, rtextents=0


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