* JP Howard <jh_lists@fastmail.fm>: > On Thu, 21 Nov 2002 11:15:13 +0100, "Ralf Hildebrandt" > <Ralf.Hildebrandt@charite.de> said: > > Our current problem: Load is low, but ever so often the system decides > > to do some serious disk I/O which causes all processes to wait for > > disk I/O -- load explodes (rises linear up into the 20-30ies) just to > > fall linearly (spelling?) right after that. > > > Are you using Cyrus? If so, what is your prefork set to in imapd.conf? Nope. We use courier. > We saw what you're seeing, and tracked it down to Cyrus' scheduled event > handling in large prefork pools. No - I'm quite sure about that. The load increase is (immediately) unrelated to usage. It's the same freeze we encounter with our desktop boxes: From time to time the disk goes mad (you hear lots of head movements). During that time the mouse pointer freeze - but on these lightly loaded machine it merely lasts 2-3s. -- Ralf Hildebrandt (Im Auftrag des Referat V a) Ralf.Hildebrandt@charite.de Charite Campus Mitte Tel. +49 (0)30-450 570-155 Referat V a - Kommunikationsnetze - Fax. +49 (0)30-450 570-916 "Come to think of it, there are already a million monkeys on a million typewriters, and the Usenet is NOTHING like Shakespeare!" -Blair Houghton _______________________________________________ Ext3-users@redhat.com https://listman.redhat.com/mailman/listinfo/ext3-users
