> 
> I've set up an iScsi volume on OpenSolaris (snv_134) with these
> commands:
> 
> sh-4.0# zfs create rpool/iscsi
> sh-4.0# zfs set shareiscsi=on rpool/iscsi sh-4.0# zfs create -s -V 10g
> rpool/iscsi/test
> 
> The underlying zpool is a mirror of two SATA drives. I'm connecting
> from a
> Mac client with global SAN initiator software, connected via Gigabit
> LAN. It
> connects fine, and I've initialiased a mac format volume on that iScsi
> volume.
> 
> Performance, however, is terribly slow, about 10 times slower than an
> SMB share on the same pool. I expected it would be very similar, if
> not faster
> than SMB.
> 
> Here's my test results copying 3GB data:
> 
> iScsi: 44m01s 1.185MB/s
> SMB share: 4m27 11.73MB/s
> 
> Reading (the same 3GB) is also worse than SMB, but only by a factor of
> about
> 3:
> 
> iScsi: 4m36 11.34MB/s
> SMB share: 1m45 29.81MB/s
> 
> 
> Is there something obvious I've missed here?
> --
> 
> Hi Matt, here is a decent post on how to setup the COMSTAR and disable
> the old iscsitgt service.
> 
> http://toic.org/2009/11/08/opensolaris-server-with-comstar-and-zfs/
> 
> Have a great day!
> 
> Geoff
> 

You should also look into block alignment as well, to prevent unnecessary hits 
on the drives during reads/writes.
  
--
iMx
i...@streamvia.net
www.slashdevslashnull.com


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