2009/6/5 Pasi Kärkkäinen <pa...@iki.fi> > > On Fri, Jun 05, 2009 at 12:57:11AM +0200, benoit plessis wrote: > > Hi, > > > > Well the target are NetApp Filers, one FAS2020 and the other a FAS3020. > > > > The test system is directly attached to the filer, using either a bnx2 > card > > or an intel > > > > The latency is calculated by bonnie++ 1.95 on a ext2 file system, the > > bandwith came from interface monitoring using cacti or bmon and also > > bonnie++ > > > > Iperf give 924Mbits/sec using iperf > > Using a 4k dd read on a nfs file mounted on the same filer i got 96Mo/s > > using > > an un-optimized path (no jumbo frame, going thru a few switchs and a > router) > > > > Device blocksize is 4k, as is the FS blocksize > > > > OK. I don't really have personal experience with NetApp filers. Maybe > they're good in NAS stuff, not in (iSCSI) SAN stuff?
When i told them my number they seem very surprised and said they do have better results ... If you get 924 Mbit/sec with iperf using that bnx2 card, then the card and > drivers should be fine. As of the card, while i can have very good result of this kind, i know by experience that in some workload conditions bnx2 cards simply fail. I have similar system that can't get past 60Mbps of http traffic using haproxy. > What distribution are you using on the initiator? What kernel? What > open-iscsi version? Distribution is debian/lenny, kernel 2.6.26-2-amd64 and packaged open-iscsi 2.0.870~rc3-0.4 Can you paste your iSCSI sessions parameters/settings from the active > session? Well yes, if you told me how or where to look :) Did you try with 512 bytes device blocksize I just can't: r...@zeus:~# blockdev --setbsz 512 /dev/sdb r...@zeus:~# blockdev --getbsz /dev/sdb 4096 r...@zeus:~# blockdev --setbsz 8192 /dev/sdb BLKBSZSET: Argument invalide --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "open-iscsi" group. To post to this group, send email to firstname.lastname@example.org To unsubscribe from this group, send email to open-iscsi+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/open-iscsi -~----------~----~----~----~------~----~------~--~---