Heh, it seems it would be nice to make SA scan messages fatser. If I undersand 
your idea correctly, you want not to run regexp one by one, but write the 
state machine for all regepes and walk on this states by the mail, but... I 
undersand how this may be faster (liner time of the message size) if SA had 
one rexep for detecting spam. Now SA have muliplt rules that can be fired 
simultaneously. For this situation I can't imaging the way to write the state 
machine.

Another issue: it seems to me most time consuming operation - network tests. 
It takes about 10 seconds to scan mail on my machine with bayers and newtwork 
test with very little cpu load (it cleary shows network tests) and just few 
seconds without network.

On Вторник, 25 Ноябрь 2003 15:27, Scott A Crosby wrote:
> 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.
>
> 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?
>
> Scott
>
>
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