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?
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