Which NIC/driver you are using?
Thomas Georgiou wrote:
initiator(linux)->osol: 630Mbits/s
initiator->linux: 520Mbits/s
linux->initiator: 733Mbits/s
osol->initiator: 297Mbits/s
It appears that osol is having a little trouble transmitting information.
On Tue, Aug 4, 2009 at 6:16 PM, Erast<er...@gnusolaris.org> wrote:
I would recommend to isolate Networking first. I.e. run iperf between the
boxes (Linux vs. OpenSolaris), single thread, 512 bytes payload - this will
somewhat emulate iSCSI traffic over single raw device. See what you'll
get...
Thomas Georgiou wrote:
Setting that under Linux, I get 28.6MB/s read, 72.2MB/s write, 571.4
random seeks/s, 14.9MB/s rewrite. Noop doesn't appear to make much
difference.
On Mon, Aug 3, 2009 at 11:49 PM, Erast<er...@gnusolaris.org> wrote:
Could you try to set the IO scheduler to "noop":
echo noop > /sys/block/sdX/queue/scheduler
and see if that makes a difference?
Thomas Georgiou wrote:
I have 2 HP DL380G4s each connected directly to a FC JBOD (Powervault
224F). Each server has 2 QLA2200 HBAs so multipathing to the JBODs is
in use. Each JBOD has 14 10k rpm FC drives. I installed one server
with Linux and the other one with OpenSolaris. Running bonnie++
locally, i get very comparable performance. About 1000 random
seeks/s, and ~150MB/s reading and writing. However, I want to use
this storage exported to other servers over iSCSI. Under Linux, I am
using 2.6.30 and ietd and linux software raid 6. Under OpenSolaris,
b118 and COMSTAR and a zvol backed by a raidz2 zpool. I appear to be
getting much worse performance under OpenSolaris compared to Linux.
Benchmarks were run over a 1gb link to an open-iscsi initiator
(linux). Any ideas to what might be causing the low performance?
Benchmarks are located here:
http://www.tjhsst.edu/~2010tgeorgio/iscsibenchmark5.html
Thomas Georgiou
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