Mike Christie escribió: > Miguel Gonzalez Castaños wrote: > >> Erez Zilber escribió: >> >>> Hi, >>> >>> I'm running some performance tests with open-iscsi (iops & throughput). >>> With open-iscsi over TCP, I see very low numbers: >>> >>> * iops: READ - 20000, WRITE - 13000 >>> * throughput: READ - 185, WRITE - 185 >>> >>> In open-iscsi.org, I see much higher numbers. Did anyone measure >>> open-iscsi performance lately? Can you share your numbers? Which >>> iscsid.conf file did you use? >>> >>> Thanks, >>> Erez >>> >>> >>> >> I'm having a HP AiO 600 Storage Server with SATA drives in RAID 5. >> >> I have tried using open-iscsi and samba mounts and I'm getting around 10 >> MB/s of performance. I've asked in the HP forums: >> >> > > If I have not already, try this > > http://www.open-iscsi.org/bits/open-iscsi-2.0-868-test1.tar.gz > > I am not sure exactly why yet, but we found that with someone's setup we > saw IO taking 6 or 7 seconds to get sent. With that tarball the problem > is fixed and performance is normal. > Apparently there is a big difference between measuring with dd or doing it with disktest. I know the latter is a raw disk test while dd is testing it in the filesystem level but how come there are such big differences?
I'm getting 40 MB/s in writes while disktest gets 100 MB/s in writes. Another question, using RAID 1+0 with iSCSI targets could improve the writes performance? The iSCSI server has RAID 5 and that makes the performance really low: 100 MB/s writes 1000 MB/s for reads. Thanks, Miguel --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "open-iscsi" group. To post to this group, send email to open-iscsi@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/open-iscsi -~----------~----~----~----~------~----~------~--~---
