On May 9, 2008, at 11:55 AM, DAve wrote:
For single-processor systems, FreeBSD 4.11 does very well at a lot
of tasks. However, Dave apparently has a 4-CPU system (~8 threads
if he enabled hyperthreading), and for real SMP hardware, more
recent versions of FreeBSD generally perform better than 4.x would.
Single CPU quad core.
ps -aux output is up, look under the FBSD dir. I also put up both
dmesg.boot files from the servers.
MailScanner is what is taking up all of the load; tuning that area is
where you need to focus.
Things which come to mind are trying to limit the max number of
children of that being run to something smaller, perhaps 8 or so.
Yes, they recommend running 5 * #CPUs, but they also think their
instances are going to be around 20MB in size, but yours are running
at 100+ MB size.
You might find that running sa-update and sa-compile nightly might
improve your SpamAssassin performance; I've got a crontab setup which
runs the following nightly:
% cat /usr/local/bin/update-spamassassin
sa-update --allowplugins --gpgkey
saupdates.openprotect.com --channel updates.spamassassin.org
kill -HUP `cat /var/run/vscan/spamd.pid`
(If you aren't running spamd because MailScanner uses builtin
interface to SpamAssassin, comment out the last line. But do check
the sa-compile docs, you have to make a change for it to be used....)
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