On Thu, 2009-10-15 at 12:53 -0700, Robinson, Eric wrote: > > That's a kernel/performance issue. Perhaps there's an issue > > with the storage driver. The fact that the load seems to be > > low is probably because the metrics you're looking at are > > misleading. For instance, the first delay occurs around the > > time the backup client starts and it usually starts by scanning > > all filesystems which probably means many small storage requests. > > The later load is probably due to big I/O (file transfer) and it > > seems to bother the kernel a bit less than the former one. > > If I understand you correctly, when the load shows high it is because > the kernel is reporting it correctly, but when the load shows low it is > because the kernel is not reporting it correctly? If so, then sar and > top cannot be relied upon. If there another way to get to the heart of > the issue?
Load is a very... debatable... metric. http://www.teamquest.com/resources/gunther/display/5/index.htm This is an interesting article if you are interested in what you are basing your decisions on. _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
