<html> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=US-ASCII"> <meta name=Generator content="Microsoft Word 10 (filtered)"> <style>  </style> </head> <body lang=EN-US link=blue vlink=purple> <div class=Section1> Hello everyone: I've been working on tuning our production server running Nagios which monitors currently 1500 services and will eventually monitor 5000. I was able to lower the CPU spikes and keep Linux from swapping by lowering the max_concurrent_check=325 and command_check_interval=2 based on the formula depicted in the documentation. We are currently monitoring the latest check time to the earliest check time and we are find that it is an average of 8-10 minutes which currently is not acceptable. Any recommendations on minimizing that time would be appreciated. Linux System: P4 2.8 Ghz with 768 RAM My second question has to do with why individual Nagios check processes take up 3172KB of memory. That's a lot in my opinion especially if you multiple that times the number of checks. Is there an explanation? Can it be lowered? See attachment. Thanks </div> </body> </html>