I mentioned this about a year ago, but now that people are starting to write rulesets with hundreds to thousands of new rules, I thought I'd bring it up again.
How happy are people with the performance of SA, especially with all of thee new rules? The reason I ask is that I'm on-again, off-again working on a new automata based regexp matching engine and I want to know if it would be one of those things that anybody else might care about.
An automata based regexp engine is one that can compile a set of regular expressionns down into an automata, then run the automata. The advantage this has is that it can match any number of regexps with no loss in performance. I previous prototype I had could match 200 regexps taken from SA about a thousand times faster than SA could match them. Another scaling test with 5000 regexps was just as fast.
3 orders of magnitude? I don't know who *wouldn't* have been interested in that before... I sure would have been...
... except one caveat: What was the memory utilization like? That's *my* big problem with SA - I had to bump the RAM in my mailserver twice (256M -> 512M -> 1G) for SA alone, and it's still shakey to the point I cannot deploy it sitewide... :-/
So my question is, when I finish the matching engine, if I finish it, is there any interest in trying to use it to match spam? A year ago, the consensus seemed to be that everyone was pretty much happy with SA's performance. Its not fast, but it is fast enough.
Is that still true?
Not for me, anyway... I am actually looking for a full replacement right now for SA that might be deployable sitewide... my system is an Athlon 1800+ / 1G RAM / 2 9G SCSI HDs / 1 IDE HD (just backup shiznit)... and SA brings this down *regularly*, despite only using it on ~100 mailboxen... I'm not chancing 2500!
That's my story, and I'm sticking to it... Laterz, Roger "Merch" Merchberger
-- Roger "Merch" Merchberger --- sysadmin, Iceberg Computers Recycling is good, right??? Randomization is better!!!
If at first you don't succeed, nuclear warhead disarmament should *not* be your first career choice.
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