<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 list, We have been using Nagios for nearly a year now and love it! We are looking at extending our utilization of by integrating NSCA/NRPE. In the environment that we hope to utilize the remote service, the remote machine queries nearly 1000 devices via SNMP every 10 minutes. Nagios by itself does a great job of scheduling and runs smoothly. I have a nagios test machine setup and there is almost no laod (never above 0.2 thanks to the SNMPPD!!!), however, I am concerned that once I have 100 or more of these remote machines running, all monitoring 1000 devices (yes, that is about 100,000 devices) the nagios central server will grind to a halt. Currently this is a dual Xeon 2.4 with 2 GB of ram. I realize we may need to segment these “central” servers to allow for proper scalability. My question is, however, which is better for performance on the central server, NSCA or NRPE? I read in one thread about how NSCA sends all data to a FIFO pipe and that pipe has a limited buffer so service checks which come in all at once may get dropped. Please advise! Thanks, Mike </div> </body> </html>