Date: Sun, 23 Feb 2014 13:25:19 -0600 From: dweimer <dweimer@dweimer.net> To: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: FreeBSD 10 iSCSI Performance/Best Practices Message-ID: <03c1b3abc14373bfdb107d4bbca3ca34@dweimer.net>
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I have been searching but I haven't been able to find very much
information on FreeBSD 10s new iSCSI setup in the way of performance
tuning. I have an iSCSI target defined and am connecting to it with my
Windows 8.1 workstation. But performance is horrible, 5-10M per second.
I can actually write to a Samba share on the same server from the
workstation at 30-50M per second, so something is definitely not working
optimally on the iSCSI side. This is all running on commodity hardware,
so I don't expect lightening fast results, but I would expect to see it
faster than the Samba share by about the same magnitude that it is
running slower.
the settings are very basic.
auth-group Workstation {
chap iqn.1991-05.com.microsoft:workstation.dweimer.local ??????
}
portal-group WorkstationISCSI {
discovery-auth-group Workstation
listen 0.0.0.0
listen [::]
}
target iqn.2012-06.com.webmail:WorkstationDriveD {
auth-group Workstation
portal-group WorkstationISCSI
lun 0 {
path /dev/zvol/iscsi/WorkstationDriveD.0
}
}
the server is a VMware ESXi5.5 guest, the samba share and the iscsi zvol
are on different virtual disk volumes but both are on the the same
physical disks, on the ESX system.
I looked at systat -vmstat, and everything looks just about idle on the
server.
the network is all 1G, with jumbo frames enabled.
I am assuming that I need to tune a settings somewhere to get this
running at an acceptable speed, but I am unsure where to start.
--
Thanks,
Dean E. Weimer
http://www.dweimer.net/
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