Hi Users, We are trying to use Xen 6 with NFS shared storage, so far the performance is really bad, I've been looking for information in the archive mailing list, I can see a few users with the same problem, but no solutions in the email thread. Can anyone provide me with some clues ? When I do a dd test directly from one of the hosts on the NFS mount I get a write speed of about 150MBps dd if=/dev/zero of=test.dmp bs=1M conv=fdatasync count=1000 1000+0 records in 1000+0 records out 1048576000 bytes (1.0 GB) copied, 6.99829 seconds, 150 MB/s But when I do the same test on a Cloudstack VM running on the same host (root disk on the same nfs mount ofcourse) I get a very low write speed. 20MBps. dd if=/dev/zero of=test.dmp bs=1M conv=fdatasync count=1000 1000+0 records in 1000+0 records out 1048576000 bytes (1.0 GB) copied, 44.6171 s, 23.5 MB/s Any ideas how I can improve this ? _______________________________________________ Xen-users mailing list Xen-users@lists.xen.org http://lists.xen.org/xen-users