max, "good perfomance inside vm with microsoft initiator, and poor from host." - this means if initiator inside VM i has nice speed, so I suggest this bug does NOT network related, but i can test straight connection speed next week

anton, what settings exactly you suggest to check?
hardware is okey, this was checked already, and indirectly indicated by fact that inside VM iscsi initiator works much better

up: this (3MBps) poor perfomance didn't stable, sometimes it raises up to 15-50MBps.
anyway this is much less than raw perfomance from SAS stripe (85 to 110 MBps)

no, i suggest this esxi4 perfomance problem is irq-flood related. Because i found similar problem with iscsi target based on freebsd (istgt). But there is much less perfomance penalty, native 30MB/s down to 10MB/s via gigabit iscsi, with starwind speed penalty native 90MB/s down to 3MB/s.

"...esxi 4.0u1 (build 244038) on sun x4100..."
onboard 1 intel pro 1000 mt dual port server, broadcom n/c

already, looks like this is esxi4 problem instead of starwind bug.
good perfomance inside vm with microsoft initiator, and poor from host.

hello
i have strange very low perfomance, i have 1 esxi 4.0u1 (build 244038) on sun x4100 and starwind (5.3.0.1310) at windows 2003r2 x64 running on sun x4600, when i xmit data over gigabit copper i have about 3 meg per second even if device is ramdrive