Jim Maul wrote:
I dont see anything over 4.0 seconds there with the average around 2.0 seconds maybe? This is with extra SARE rules, razor, and URIBL lookups. This is running on a p4 2.8ghz with 512mb ram.
Yup - everyone likes to say "SA is slow" without understanding why. It's nothing to do with it being in perl - it's everything to do with all the best (well, most) pieces of SA involving NETWORK TESTS. All those DNS-based RBL, SURBLs, etc lookups.
We've got spamd servers running in Europe, USA and here in NZ - all on "fast" hardware. And yet why do you think SA returns in < 2sec in the USA and yet takes 4-10sec in NZ? Yup - the fact that NZ is the Internet equivalent of the Moon :-( Latency is a real killer for the network tests. If I cared, I'd try to bring in a direct DNS feed for the RBLS being used - but basically all of them would need to be local to see the performance benefit - and SA uses a lot these days. Adding 5+ sec per message isn't killing us - so I'm not bothering. And of course I could always disable all the network tests - but that effectively makes SA useless - so I can't imagine doing that.
SA is "slow" because it does a lot. Some commercial antispam products are a lot faster than SA because they don't have "network tests" - their equivalent of RBLs/etc are all done via feeds - so are instantaneous. Highly inefficient - but instantaneous.
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