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I was looking at those yesterday because I was running the load average
up to 10 or 12 in spurts. My box has a Sempron 2200 and a gig of RAM,
so it does swap when it gets busy. I can upgrade to a machine that's
half again faster with twice the memory for the same monthly fee, but
I'd have to run both during the transition and it would take a ton of
time to move everything over. (It's a webserver for a couple of dozen
domains and my secondary name server.)<br>
<br>
I told Sendmail to stop accepting connections at load average of 6,
which kept the load average from trying to get to 50. (Yes, I have seen
the la go that high, although not on this system. It ain't pretty!)<br>
<br>
I dropped the child count from five to three, which seemed to help -
each child just took bigger bites and the throughput didn't seem to be
affected.<br>
<br>
One thing that looked appealing was setting up a caching nameserver,
but all the docs I ran into assumed that you weren't already running
BIND on the box and that you wanted to cache your local network, so I
was too confused to get that running. (I do have everything installed,
just need to figure out the config.)<br>
<br>
I did add pause-greet to the Sendmail config, it blocked at least a
hundred messages overnight. Not a big change, but the price is right.<br>
<br>
I'm thinking about setting up greylisting, it will cut down on the MS
load and should spread out the surges a little.<br>
<br>
I guess I should have expected things to slow down when I leapfrogged
so many versions on Tuesday. Now I've got to figure out how to get it
back in control or bite the bullet and get some more horsepower.<br>
<br>
Van<br>
<br>
Martin Hepworth wrote:
<blockquote
cite="mid:72cf361e0904300226y78c8dbf0v8aa6c2b16e3b1d79@mail.gmail.com"
type="cite">See
<div><br>
</div>
<div><a moz-do-not-send="true"
href="http://wiki.mailscanner.info/doku.php?id=maq:index#optimization_tips">http://wiki.mailscanner.info/doku.php?id=maq:index#optimization_tips</a></div>
<div><br>
</div>
<div>and</div>
<div><br>
</div>
<div><a moz-do-not-send="true"
href="http://wiki.mailscanner.info/doku.php?id=maq:index#getting_the_best_out_of_spamassassin">http://wiki.mailscanner.info/doku.php?id=maq:index#getting_the_best_out_of_spamassassin</a></div>
<div><br>
</div>
<div>Dropping unknown recipients and having a local caching
nameserver are generally the first things to sort, then look at the
number of children and batch size...</div>
<div><br>
</div>
<div>-- <br>
Martin Hepworth<br>
Oxford, UK<br>
<br>
<div class="gmail_quote">2009/4/30 Mail Admin <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:mailadmin@midland-ics.ie">mailadmin@midland-ics.ie</a>></span><br>
<blockquote class="gmail_quote"
style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div link="blue" vlink="purple" lang="EN-IE">
<div>
<p><span lang="EN-GB">Hi All,</span></p>
<p><span lang="EN-GB"> </span></p>
<p><span lang="EN-GB">Recently I am finding that the amount of
incoming mail through my MailScanner Server is really slowing down
things. There is a heavy load now since I took on a domain that seems
to
me well spammed. Yesterdays processing processed 22,000 emails @88%
Spam
approx.</span></p>
<p>Server Spec POWEREDGE 1850 XEON 2.8GHZ/2MB 800FSB – WITH
2 GIG RAM and RAID 1 Configuration on two Disks RPM 10K… Its
Running Fedora Core 5, Send Mail 8.13.8-1.fc5 with MailScanner 4.69.7-1
with
SA, Razor, DCC., MailWatch V1</p>
<p>Its working very well blocking spam, but only in the last
couple of days its got really slow. </p>
<p>Any ideas on how to reduce the load on this server>? By
blocking mail at the MTA before it hits MS? OR Tweaking my processes?</p>
<p>What do the Experts think on the Server Spec, for the amount
of traffic?</p>
<p>I’d appreciate any help</p>
<p> </p>
<p>Regards</p>
<p>Kevin</p>
<p><span lang="EN-GB"> </span></p>
</div>
</div>
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</blockquote>
</div>
<br>
<br clear="all">
<br>
<br>
</div>
</blockquote>
<br>
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