Over a pretty quiet Gigabit link, 3x 10k SCSI disks, all on the same
controller, in a RAIDZ pool exported using shareiscsi:

# time dd if=/dev/urandom of=/var/log/maillogs/test bs=1024 count=100000
100000+0 records in
100000+0 records out

real    0m6.958s
user    0m0.065s
sys     0m6.893s

(second try)

real    0m6.858s
user    0m0.065s
sys     0m6.783s

(third)

real    0m6.881s
user    0m0.065s
sys     0m6.815s

The only problem I've had is with directories that have a lot of file
creation and deletion - sometimes listing these directories can be
incredibly slow, even with only a couple of files in them, but I think
that might be a bug in the (rather old) version of zfs I'm using.

HTH,

Chris


On Tue, 2008-02-19 at 14:44 -0600, Bob Friesenhahn wrote:
> It would be useful if people here who have used iSCSI on top of ZFS 
> could share their performance experiences.  It is very easy to waste a 
> lot of time trying to realize unrealistic expectations.  Hopefully 
> iSCSI on top of ZFS normally manages to transfer much more than 
> 5MB/second!
> 
> Bob
> ======================================
> Bob Friesenhahn
> [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/
> GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
> 
> _______________________________________________
> zfs-discuss mailing list
> zfs-discuss@opensolaris.org
> http://mail.opensolaris.org/mailman/listinfo/zfs-discuss


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