Leslie, I don't know if it is related, but if you have an hour or so you should read bugzilla 12309. There are 290 comments and tons of significant attachments. http://bugzilla.kernel.org/show_bug.cgi?id=12309 It's about very high latency experienced by users while a large i/o activity is happening in the background. I don't know if the background tasked is also being slowed down like it is for you. Greg -- Greg Freemyer Head of EDD Tape Extraction and Processing team Litigation Triage Solutions Specialist http://www.linkedin.com/in/gregfreemyer First 99 Days Litigation White Paper - http://www.norcrossgroup.com/forms/whitepapers/99%20Days%20whitepaper.pdf The Norcross Group The Intersection of Evidence & Technology http://www.norcrossgroup.com -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html