Jason, > Recently had many thousands of messages hold up my mail server, and I > adjusted max_servers to 15, and also changed master.cf to reflex that on > the 'post processing' side. > > My question is, how much is too much? Server limitations aside, and > speaking strictly software/OS. At what point should I be concerned with > max_servers? > > I am running a 32bit Linux OS. But I would like to make this even > larger.
For modern dual or quad CPU hosts with enough memory a value between 15 and 50 is reasonable. Watch CPU utilization percent (or idle time). As CPU usage (for all CPUs in a box) nears 100% the $max_servers is sufficient or possibly too large. Keeping it a bit under 100% is just right. (do not monitor 'load', this isn't the same thing) For more details see http://www.ijs.si/software/amavisd/amavisd-new-magdeburg-20050519.pdf slides 8 .. 28 (or so). Figures are for 4 years old hardware, but the principle remains. So the ultimate best figure depends on the choice of SpamAssassin settings, rules and network tests, on chosen virus scanners, and of course on the hardware: mainly on CPU power, assuming the memory can cope. Mark ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ AMaViS-user mailing list AMaViS-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/amavis-user AMaViS-FAQ:http://www.amavis.org/amavis-faq.php3 AMaViS-HowTos:http://www.amavis.org/howto/
