> At a guess, it sounds like load from LIST. You should be able to see > what's causing the load if you have several seconds. For example, > enable telemetry and look for long turn around. Or use strace (or > equiv). Have you experimented with foolstupidclients? What is your > client mix? How many mailboxes do you have? I set up a second frontend to analyze a single client. Strace shows the dumb: read(0, "00000002 LIST \"\" INBOX.*\r\n", 4096) = 26 read(0, "00000003 LIST \"\" user.*\r\n", 4096) = 25 read(0, "00000004 LIST \"\" *\r\n", 4096) = 20 I tested fullstupidclients on the production frontend and it has cut load significantly but that LIST "" user.* call is expensive (0.950 secs 1 calls). I assume that's to poll for shared folders and I'm going to look into whether or not it can be eliminated. I don't suppose there's another fullstupidclients that improves responsiveness on this call, is there? John -- John Madden Sr UNIX Systems Engineer Ivy Tech Community College of Indiana jmadden@xxxxxxxxxxx ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
