Those numbers are using iperf (-c/-s) -l 512 as suggested by Erast. Also, I am using a Linux initiator, not a Solaris one.
On Thu, Aug 6, 2009 at 12:16 AM, Roger Dong<roger.d...@sun.com> wrote: > Thomas Georgiou 写道: >> >> initiator(linux)->osol: 630Mbits/s >> initiator->linux: 520Mbits/s >> linux->initiator: 733Mbits/s >> osol->initiator: 297Mbits/s >> > > Hi Thomas, > > Is this the data for network only? We are working on Solaris iSCSI initiator > and want to make sure to understand the problem correctly. > > Thanks, > Roger >> >> 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 >> > > _______________________________________________ storage-discuss mailing list storage-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/storage-discuss
