On Jul 31, 2009, at 1:55 AM, poifgh wrote:
I ran freshly build SA with Bayes and DNSBL turned off. Why am I not
seeing
a linear increase in the throughput? Is a file locking creating the
bottleneck? If yes, which particular file is being locked? If no,
what could
be the reason for this?
There could be many reasons, check out my talk (admittedly out of date
a little but should still be mostly relevant) on High Performance
Apache SpamAssassin at the following link:
http://people.apache.org/~parker/presentations/index.html
Keep in mind that you might also be seeing other factors like memory
and disk I/O contention. You don't really spell out your testing
infrastructure so its not real clear if you're even performing a valid
test.
Also, I wouldn't necessarily expect to see a linear increase, although
you might be able to take some easy steps for increasing your overall
performance.
Michael
