Strange fluctuation in load average

Trisha Hoang trisha at rockyou.com
Thu Jun 10 21:48:11 CEST 2010


Hi all,
When I first installed nagios-3.2.0 with embedded perl enabled, nagios
experienced increasing latency, starting at 1 sec and climbed upto 300
within a few hours until restarting nagios. I read on one of the older post
suggesting to recompile nagios *without* embedded perl, and that resolved
the latency issue, with latency consistently at less than 1 sec. However,
ever since, the system load average has fluctuated wildly from 1 to 12 and
down to say ... 3 within a minute. This fluctuation happens 3-10 minutes
each time and calms down for ... say an hour. There doesn't seem to be any
cron jobs that can cause this kind of load, and cpu (1-quad core) is usually
at least 50% idle , with plenty of free memory, no IO blocks, on Centos 5-2.
What's strange is with nagios compiled with embedded perl, the load was
consistently at 2-4.
Could this be nagios related? Please let me know if you need more
information.

-- 
Trisha Hoang | IT/Operations | Rockyou, Inc. | Phone: 408-472-3989 | AIM:
rockyoutrisha
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