Date: Tue, 21 Jun 2011 11:32:29 -0400 (EDT) From: "Viren R. Shah" <vshah@raytheonvtc.com> To: <freebsd-questions@freebsd.org> Subject: Pointers to debugging slow iSCSI initiator performance Message-ID: <1e6c601cc3028$6c33c920$449b5b60$@com>
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Folks
I have a FreeBSD 8.1-STABLE system that I'm connecting via iSCSI to a
Compellent SAN. The iscsi-initiator works fine but is very slow and given
to periodic (very short) hangs. The issue is that we have subversion on
it and it takes a long time to checkout some of our repos. Any pointers to
tweaking the config or figuring out the cause of the slowness is
appreciated. I haven't found many posts about the iscsi-initiator on
FreeBSD in my searches.
The config is below:
arachnophile# dd if=/dev/zero of=/san/test.out bs=1M count=2048
2048+0 records in
2048+0 records out
2147483648 bytes transferred in 145.111894 secs (14798812 bytes/sec)
arachnophile# uname -a
FreeBSD arachnophile.virtc.com 8.1-STABLE FreeBSD 8.1-STABLE #0: Wed Oct
13 13:52:31 EDT 2010
root@arachnophile.virtc.com:/usr/obj/usr/src/sys/ARACHNOPHILE amd64
arachnophile# more /etc/iscsi.conf
compellent {
initiatorname = arach
TargetName =
iqn.2002-03.com.compellent:50000d3100067001
TargetAddress = 172.30.0.10:3260,0
}
Hardware (in case it matters) is an IBM xSeries 346
CPU: Intel(R) Xeon(TM) CPU 3.40GHz (3400.16-MHz K8-class CPU)
real memory = 2147483648 (2048 MB)
arachnophile# netstat -I bge1
Name Mtu Network Address Ipkts Ierrs Idrop Opkts
Oerrs Coll
bge1 1500 <Link#2> 00:14:5e:2b:39:7d 353438253 0 0
438355075 0 0
bge1 1500 172.30.0.0 172.30.0.66 353316523 - -
438348928 - -
Thanks
Viren Shah
vshah@raytheonvtc.com
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