On Mon, 2009-01-12 at 10:43 -0800, John R Pierce wrote: > Matt wrote: > > Is there anyway to tell with top or iostat which process is hogging > > all the disk I/O? <snip> IMHO, The best way is to install and use the System Activity Reporting (SAR) system. It's native, available, as detailed or general as you want and allows a lot of way to "slice" the results. Frequency of sampling is also under your control to allow chasing those particularly nasty "extraneous events" that might be frequent. HTH -- Bill