Im using: zfs set:zil_disable 1 On my se6130 with zfs, accessed by NFS and writing performance almost doubled. Since you have BBC, why not just set that?
-Andy On 5/24/07 4:16 PM, "Albert Chin" <[EMAIL PROTECTED]> wrote: > On Thu, May 24, 2007 at 11:55:58AM -0700, Grant Kelly wrote: >> I'm running SunOS Release 5.10 Version Generic_118855-36 64-bit >> and in [b]/etc/system[/b] I put: >> >> [b]set zfs:zfs_nocacheflush = 1[/b] >> >> And after rebooting, I get the message: >> >> [b]sorry, variable 'zfs_nocacheflush' is not defined in the 'zfs' module[/b] >> >> So is this variable not available in the Solaris kernel? > > I think zfs:zfs_nocacheflush is only available in Nevada. > >> 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. > > It would also be worthwhile doing something like the following to > determine the max throughput the H/W RAID is giving you: > # time dd of=<raw disk> if=/dev/zero bs=1048576 count=1000 > For a 2Gbps 6140 with 300GB/10K drives, we get ~46MB/s on a > single-drive RAID-0 array, ~83MB/s on a 4-disk RAID-0 array w/128k > stripe, and ~69MB/s on a seven-disk RAID-5 array w/128k strip. -- _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
