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 >>>> _______________________________________________ >>>> storage-discuss mailing list >>>> storage-discuss@opensolaris.org >>>> http://mail.opensolaris.org/mailman/listinfo/storage-discuss >>>> >>>> >> _______________________________________________ >> storage-discuss mailing list >> storage-discuss@opensolaris.org >> http://mail.opensolaris.org/mailman/listinfo/storage-discuss >> >> > _______________________________________________ storage-discuss mailing list storage-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/storage-discuss
