Marion Hakanson wrote: > The zilstat tool is very helpful, thanks! > > I tried it on an X4500 NFS server, while extracting a 14MB tar archive, > both via an NFS client, and locally on the X4500 itself. Over NFS, > said extract took ~2 minutes, and showed peaks of 4MB/sec buffer-bytes > going through the ZIL. > > When run locally on the X4500, the extract took about 1 second, with > zilstat showing all zeroes. I wonder if this is a case where that > ZIL bypass kicks in for >32K writes, in the local tar extraction. > Does zilstat's underlying dtrace include these bypass-writes in the > totals it displays? >
This is what I would expect. What you are seeing is the affect of the NFS protocol and how the server commits data to disk on behalf of the client -- by using sync writes. > I think if it's possible to get stats on this bypassed data, I'd like > to see it as another column (or set of columns) in the zilstat output. > Yes. I've got a few more columns in mind, too. Does anyone still use a VT100? :-) -- richard _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
