jburzenski at AMERICANHM.COM
Fri Mar 5 16:34:41 GMT 2004
I recently upgraded from MS 4.22-5 to 4.26.8-1. I have very similar to
default configuration and accepted the defaults for all of the new options
I have noticed (via mailscanner-mrtg graphs) a significant load increase
coming in drastic spikes during the day. The intervals aren't that regular
but they do appear to be almost hourly. Typicaly the load value will hover
between 0 and 1. But, now, during the day I can see it create a peak over
the course of 40 minutes to an hour that hits consistently around 5. The
only significant process I am running hourly is mailscanner-mrtg (version
I am running 2 dns load balanced servers, both dual 2.4g xeons with 2.5GB
memory processing somewhere around 100K messages per day each. Here are my
stats for cpu/mem right off msmrtg.
Max CPU Utilization: 30.0 percent Average CPU Utilization: 6.0
percent Current CPU Utilization: 11.0 percent
Max memory including cache: 2552.0 Megabytes Average memory
including cache: 2452.0 Megabytes Current memory including cache:
Max memory excluding cache: 932.0 Megabytes Average memory
excluding cache: 853.0 Megabytes Current memory excluding cache:
Max CPU Utilization: 35.0 percent Average CPU Utilization: 5.0
percent Current CPU Utilization: 19.0 percent
Max memory including cache: 2563.0 Megabytes Average memory
including cache: 2454.0 Megabytes Current memory including cache:
Max memory excluding cache: 891.0 Megabytes Average memory
excluding cache: 784.0 Megabytes Current memory excluding cache:
Does anyone have any ideas as to what might be causing the load average
spikes? I am not suffereing from performance issues but I was hoping to be
able to scale these boxes a little further and this limits my options a bit.
Thanks in advance.
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