On Wed, Dec 14, 2011 at 02:24:32PM -0500, Jeff Mahoney wrote: > That's pretty much the explanation. With heavy reader load, buffered > writes were stalling for 80 ms and sometimes longer. I suspected it > was contention on the ilock and the tracing with that patch > demonstrated a delay there. Since we were chasing a similar issue at > another site, it seemed worthwhile to just keep it around. We're still > tracking down the cause. I'm not sure if more recent kernels have the > same issue as there's been quite a lot of churn. Ok. I was a bit surprised that it was one out of only two XFS updates that went into a recent SLES security errata, and I never heard about it before. _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs