[Mimedefang] Server load

Jason Abbott teljanin at uga.edu
Tue Oct 15 11:48:01 EDT 2002


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Ok; I just ran a test of my Mimedefang using a production queue of 19566 
messages.
The hardware in question is a Compaq ML-370, dual 1.2gHz, 4 GB ram, 2-9gig 
mirrored OS drives running ext3, and 2-36gig striped /var/spool running 
reiserfs.  I also have a 500 meg RAM disk for /var/spool/MIMEDefang.
Software is RedHat Linux 7.2 with all the security updates, Sendmail 8.12.6, 
Mimedefang 2.21, and SpamAssassin 2.41.  Spam Assassin was set with a 
threshold of 10, and mimedefang had 30 multiplexor processes running.

With that out of the way, now for the numbers:
Mimedefang/SA scanned 19566 messages in 39 minutes 32 seconds with a 
maximum delay of 2 minutes 40 seconds.
This translates to roughly 495 emails per minute scanned.
Of this 19566 emails, 33.8% (or 6617) were classified as spam.  Our highest 
scoring spam got a whopping 76.2.
The load got very high (over 90%) but the system was always very responsive, 
there was no slowdown at the command prompt.

So, anyone who wanted hard numbers, here you go.

FYI: I was sending the queue from a similar machine to this machine, then it 
was being forwarded to another machine to simulate an actual filter gateway.  
I am extremely pleased with performance so far.  I am going into production 
with this equipment Thursday evening.

- -- 
Jason Abbott
Productions Systems Support
Enterprise IT Services
University of Georgia
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>SELECT * FROM users WHERE clue > 0
0 rows returned
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