Have you turned on the "Ignore cache flush commands" option on the xraids? You should ensure this is on when using ZFS on them.
/dale On Mar 27, 2008, at 6:16 PM, abs wrote: > hello all, > i have two xraids connect via fibre to a poweredge2950. the 2 > xraids are configured with 2 raid5 volumes each, giving me a total > of 4 raid5 volumes. these are striped across in zfs. the read and > write speeds local to the machine are as expected but i have noticed > some performance hits in the read and write speed over nfs and samba. > > here is the observation: > > each filesystem is shared via nfs as well as samba. > i am able to mount via nfs and samba on a Mac OS 10.5.2 client. > i am able to only mount via nfs on a Mac OS 10.4.11 client. (there > seems to be authentication/encryption issue between the 10.4.11 > client and solaris box in this scenario. i know this is a bug on the > client side) > > when writing a file via nfs from the 10.5.2 client the speeds are 60 > ~ 70 MB/sec. > when writing a file via samba from the 10.5.2 client the speeds are > 30 ~ 50 MB/sec > > when writing a file via nfs from the 10.4.11 client the speeds are > 20 ~ 30 MB/sec. > > when writing a file via samba from a Windows XP client the speeds > are 30 ~ 40 MB. > > i know that there is an implementational difference in nfs and samba > on both Mac OS 10.4.11 and 10.5.2 clients but that still does not > explain the Windows scenario. > > > i was wondering if anyone else was experiencing similar issues and > if there is some tuning i can do or am i just missing something. > thanx in advance. > > cheers, > abs > > > > > > > Never miss a thing. Make Yahoo your > homepage._______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
