Albert Chin wrote:
On Thu, May 24, 2007 at 11:55:58AM -0700, Grant Kelly wrote:
I'm getting really poor write performance with ZFS on a RAID5 volume
(5 disks) from a storagetek 6140 array. I've searched the web and
these forums and it seems that this zfs_nocacheflush option is the
solution, but I'm open to others as well.
What type of poor performance? Is it because of ZFS? You can test this
by creating a RAID-5 volume on the 6140, creating a UFS file system on
it, and then comparing performance with what you get against ZFS.
If it's ZFS then you might want to check into modifying the 6540 NVRAM
as mentioned in this thread
http://mail.opensolaris.org/pipermail/zfs-discuss/2006-December/024194.html
there is a fix that doesn't involve modifying the NVRAM in the works. (I
don't have an estimate.)
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