On Wed, Dec 08, 2010 at 04:53:09PM -0500, Trond Myklebust wrote: > Possibly a side effect of the fs/fs-writeback.c changes in 2.6.36? You > do appear to be hitting a lot of spinlock contention, but I suspect that > a lot of it is coming from writeback_sb_inodes, writeback_single_inode > and queue_io, all of which seem unnaturally high on your stats above. > > I don't see how you can be seeing no traffic on the wire. You are > certainly hitting some page writeout (0.2% nfs_pageio_doio). It really seems to not be doing anything. I ran nfsstat -Zcv for 5 minutes, and the only non-zero counters are rpc calls and authrefrsh, even though perf top shows similar profiles the whole time. Simon- -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
