Upgrade Oddity

[Ken Anderson (Pacific Internet)]

We process about 3x the amount of mail on a similar machine, and are
unable to run 4.26.8-1. Changes in Message.pm, particularly in it's
expansion of message parts make it slower than previous versions. It's
much better at detecting viruses hidden in poorly formed mime parts, so
it's a problem I'm hoping for a solution to as well.

You should be able to run 4.26.5 okay though, and that's a worthwhile
upgrade too!

Ken A
Pacific.Net


Jason Burzenski wrote:

> Hello All,
>
> 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
> available.
>
> 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
> 0.05).
>
> 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.
>
> BOX 1
>
> 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:
> 2529.0  Megabytes
> Max  memory excluding cache: 932.0  Megabytes       Average  memory
> excluding cache: 853.0  Megabytes       Current  memory excluding cache:
> 894.0  Megabytes
>
> BOX 2
>
> 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:
> 2489.0  Megabytes
> Max  memory excluding cache: 891.0  Megabytes       Average  memory
> excluding cache: 784.0  Megabytes       Current  memory excluding cache:
> 779.0  Megabytes
>
> 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.
>
> Jason
>