On Tue, 25 Nov 2003 13:11:10 -0500, Roger Merchberger <[EMAIL PROTECTED]> writes:
> At 03:27 11/25/2003 -0600, Scott A Crosby wrote: > >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... The response was that at a half-second a message is enough. > ... 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 -> Its hard to say --- memory usage for the automata varies based on the size and type of regexp. For regexp inputs that are primarily fixed strings, its about 10 bytes/character. Generating it may require more RAM, but that can be a one-time thing. > 512M -> 1G) for SA alone, and it's still shakey to the point I cannot > deploy it sitewide... :-/ Can you disable network tests? AFAIK, memory usage for SA is high because it interleaves several emails while they block for DNS queries. > 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! Thanks for the reference. What is the email volume? Scott ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ Spamassassin-talk mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/spamassassin-talk
