My system is being overwhelmed!

[Don Newcomer]

I'm running MailScanner 4.28.5-2 and SpamAssassin 2.63 using Perl 5.8.3 on
an HP AlphaServer ES47 with two EV7 1000 MHz processors.  I've been running
MailScanner for quite some time for virus scanning and just turned on
SpamAssassin.  I'm doing all I can to limit the load on the box including
limiting it to 5 processes and declaring anything from a blacklist as spam
without running SA on it.  What baffles me is the amount of memory I'm
using:

root      80737 13.3  0.4 84.7M  18M ??       R    16:01:21     0:47.53 [MailSca
nner]
root     334448  8.4  0.3 84.3M  14M ??       S    16:01:31     0:48.84 MailScan
ner /usr/local/MailScanner/etc/MailScanner.conf
root     323334  7.5  0.2 84.0M 7.1M ??       R    16:05:20     0:23.82 MailScan
ner /usr/local/MailScanner/etc/MailScanner.conf
root     315939  4.0  1.4 85.5M  57M ??       R    16:10:49     0:02.07 MailScan
ner /usr/local/MailScanner/etc/MailScanner.conf
root     273108  1.8  0.6 84.2M  24M ??       S    16:03:17     0:35.58 MailScan
ner /usr/local/MailScanner/etc/MailScanner.conf
root     210765  1.5  0.6 83.7M  23M ??       S    16:03:27     0:32.42 MailScan
ner /usr/local/MailScanner/etc/MailScanner.conf
root     116944  0.0  0.0 26.6M 1.5M ??       I    12:40:28     0:00.64 MailScan
ner /usr/local/MailScanner/etc/MailScanner.conf

Should this really be consuming this many resources?  Our run queues are
now up in the high teens consistently.  I've done the Message.pm patch so
the 4.28.6 upgrade isn't the answer.  Thanks in advance.

================================================================================
Don Newcomer                                            Dickinson College
Senior Manager, Systems                                 P.O. Box 1773
newcomer at dickinson.edu                                  Carlisle, PA  17013
                                                        Phone: (717) 245-1256
                                                          FAX: (717) 245-1690