Slow writes with iSCSI.

[Peter Ankerstål]

Hi,

I recently posted this to the stable list without any luck: 
http://lists.freebsd.org/pipermail/freebsd-stable/2012-November/070607.html

At this point I have found out that its only writes that are slow. If tagging is set to 1
I write about 30MB/s per target and read like 130MB/s per target.

If I change tagged openings to 4 (camcontrol tags daX -n 4) I get like 260MB/s
reads  per target (which in my case saturates the network at about 500MB/s) but
something like 2-3MB/s writes. I have tried to measure speeds on raw devices,
ZFS and UFS and it gives about the same result. Am I missing something? 
(my configs are in the original post)

Thanks!