Hi!
Im using two FreeBSD machines trying to get iSCSI to work and it works
allright, but extremley slow. It peaks at about 50MB/s if I have
multiple dd's runningt against the target.
I have two separate networks but I get no difference in speed whichever
I use. One regular 1G network connected to the same switch with Intel
cards. I get close to maximum performance with both ftp and iperf.
The other network is a IPoverIB network where I get 560MB/s with iperf
and 250MB/s with ftp.. (hmm).
Both machines run FreeBSD 9.1-PRE with OFED enabled:
FreeBSD zfs1 9.1-PRERELEASE FreeBSD 9.1-PRERELEASE #0: Tue Oct 16
16:07:39 CEST 2012 peter@zfs1:/usr/obj/usr/src/sys/OFED amd64
Im only fiddeling with writes right now and like I said I get about
50MB/s with multiple dds running, around 30 with a single thread.
(dd if=/dev/zero of=/dev/daX bs=1M count=n)
Writing to local disk at the target gives me like 300MB/s
I have also been experimenting with different burst lengths, queue
depths and so no with no noticeable difference.
I have also tried iozone and dd on both ZFS and UFS, similar results,
40MB/s and peaks at 50MB/s. So I figure it has to have something to do
with my iscsi setup.
istgt.conf:
------------------------------------------------
[Global]
Comment "Global section"
NodeBase "dc3"
PidFile /var/run/istgt.pid
AuthFile /usr/local/etc/istgt/auth.conf
LogFacility "local7"
Timeout 30
NopInInterval 20
DiscoveryAuthGroup AuthGroup9999
MaxSessions 16
MaxConnections 4
FirstBurstLength 262144
MaxBurstLength 1048576
MaxRecvDataSegmentLength 262144
[UnitControl]
Comment "Internal Logical Unit Controller"
AuthMethod CHAP Mutual
AuthGroup AuthGroup10000
Portal UC1 127.0.0.1:3261
Netmask 127.0.0.1
[PortalGroup1]
Comment "T1 portal"
Portal DA1 ip:3260
[InitiatorGroup1]
Comment "V1 group"
InitiatorName "dc1"
Netmask ip/24
[LogicalUnit1]
TargetName V1
Mapping PortalGroup1 InitiatorGroup1
AuthGroup AuthGroup1
UseDigest Auto
UnitType Disk
QueueDepth 64
LUN0 Storage /dev/zvol/store/v1 Auto
------------------------------------------------
iscsi.conf
------------------------------------------------
dc3 {
authmethod = CHAP
chapIName = id
chapSecret = pass
Initiatorname = dc1
TargetName = dc3:V1
TargetAddress = ip:3260,1
MaxConnections = 4
}
------------------------------------------------
_______________________________________________
freebsd-stable@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-stable
To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
