At Tue, 5 Apr 2011 14:07:01 +0100, Chris Webb wrote: > > Haven <ha...@thehavennet.org.uk> writes: > > > Running the same test here on the virtual I'm getting: > > 524288000 bytes (524 MB) copied, 15.2004 s, 34.5 MB/s > > > > Running that on the underlying drive of one of the cluster I get: > > 524288000 bytes (524 MB) copied, 7.54742 s, 69.5 MB/s > > Yes, that's much more the sort of performance I was seeing in my previous > tests. I'm expecting some overhead from Sheepdog, but just not quite a > factor of ten! > > > I'm mounting the sheepdog partition using ext4 on an LVM partition using: > > noatime,barrier=0,user_xattr,data=writeback > > I will re-test with ext4. Do you find disabling barriers is making a huge > difference?
I think a barrier option makes a huge difference. Thanks, Kazutaka -- sheepdog mailing list sheepdog@lists.wpkg.org http://lists.wpkg.org/mailman/listinfo/sheepdog
