On Jul 23, 2009, at 2:53 PM, Milo wrote:
The home directory is not networked mounted if that's the concern. Just in case, though, I've tried copying from the / root direction instead with no change.
Kyle brings up a good point. Even with /root, you're still as slow as the local filesystem that you're copying from. Is it on the same RAID that you have PVFS storage sitting on, or just some other disk? You can try pvfs2-cp from your null-aio file to /dev/null (a read instead of write) and see what performance you get so that no disks are involved.
As a general rule of thumb, in PVFS2 on a single node, if the storage gets X MB/s locally, what's the expected bandwidth to that node from a client on the same high speed network accessing through pvfs2fuse? 0.8* X MB/s? 0.5 * X MB/s?
I don't think we've come up with a percentage for the fuse interface, but Sumit has more experience there.
Nothing other than the server starting and stopping, but I could turn on more Gossip. Suggestions?
I wouldn't mess with that right now. -sam _______________________________________________ Pvfs2-users mailing list [email protected] http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
