Roch Bourbonnais wrote:
Le 4 janv. 09 à 21:09, milosz a écrit :
thanks for your responses, guys...
the nagle's tweak is the first thing i did, actually.
not sure what the network limiting factors could be here... there's
no switch, jumbo frames are on... maybe it's the e1000g driver?
it's been wonky since 94 or so. even during the write bursts i'm
only getting 60% of gigabit on average.
How about tcp window size (particularly tcp_recv_hiwat on the recv
side) and whether or not some CPU is saturated (particularly the
interrupt cpu on recv side, check with mpstat 1).
There is also some magic incantation to allow bigger transfer size in
iscsi (blaise should have the details).
For Solaris, the value can be set on either the iSCSI Target or
Initiator, replacing 65536 (64K), with a value of one's choosing.
[ target ]
iscsitadm modify target --maxrecv 65536 <target-IQN>
[ initiator]
iscsiadm modify target-param -p maxrecvdataseglen=65536 <target-IQN>
Jim
Can you verify the single connection throughput using either of
iperf,uperf,netperf.
-r
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