On Tue, 2005-11-22 at 14:33, Anjan Dave wrote: > Is there any way to get a temporary relief from this Context Switching > storm? Does restarting postmaster help? > > It seems that I can recreate the heavy CS with just one SELECT > statement...and then when multiple such SELECT queries are coming in, > things just get hosed up until we cancel a bunch of queries... Is your machine a hyperthreaded one? Some folks have found that turning off hyper threading helps. I knew it made my servers better behaved in the past.