And take a look if you aren't fall in a (D)DOS attack. Combine fail2ban with ASSP to try to mitigate this type of attack, thats leads to a high cpu load (specially if you use ASSP to proxy 587 port to collect whitelist/ham).
Best regards, Alexandre Em seg., 11 de nov. de 2019 às 04:56, Thomas Eckardt < thomas.ecka...@thockar.com> escreveu: > If you expect anyone can scan 30.000 mails a day without a more than idle > CPU usage - your expectation is wrong. Depending on your assp configuration > and system design, 180k mail/day may maxout a system. > > a short math: > > 180k mails * 10 sec/mail = 1.800 ksec > > 1.800 ksec / 84.600 sec /day ~ 21 > > with 10 SMTP workers - every worker will have to handle an average of two > mails all the time - which mean that 10 cores continuously processing mails > + main thread + maintenance thread + rebuild thread + the threads for > clamav, filescanner, database .... + what ever is running on the system. > > To be able to handle the workload peeks at a full assp configuration, I > expect that the system will require 16GB RAM and at least 20 cores. > > Per default assp uses as less system resources as possible. There are > tweaks to get a higher performance (for example the ISP-setup), but this > will lead in to a higher system resource usage (also CPU) and requires for > this reason a very good system design - and much more than basic knowledge > about perl and assp. > > This is an older blog about assp. > > http://blog.aceshigh.net/2013/11/assp-anti-spam-smtp-proxy-server/ > > But it shows, that assp can be run on a PI , if right designed. DO NOT try > this - a PI will not be able to process more than some hundred mails a day. > And I don't thnk, the extensive ASSP_AFC checks or OCR will work (because > of too less RAM). > > > > Thomas > > > > > > Von: "Michał Górzec" <michal.gor...@gmail.com> > An: "For Users of ASSP" <assp-user@lists.sourceforge.net> > Datum: 07.11.2019 18:41 > Betreff: Re: [Assp-user] assp is a cpu hog > ------------------------------ > > > > >> And rather than actually research/test some performance tuning options > like database configuration > > Unconventional idea but ok, I've tested this now - switched assp to > running with mysql server running on other machine. No impact on assp cpu > usage whatsoever. > > czw., 7 lis 2019 o 14:13 Andre van Eyssen <*an...@purplecow.org* > <an...@purplecow.org>> napisał(a): > > Congratulations. You've discovered that something written entirely in perl > has some CPU load on your 2012-vintage CPU and probably isn't ideal for > running 180k mails/day on vintage hardware. Are you also hitting I/O > limits on your 2012-vintage spinning rust? > > And rather than actually research/test some performance tuning options > like database configuration, you re-deployed the same thing on multiple > Linux distributions and perl versions. > > Then you posted this to a list from a *gmail.com* <http://gmail.com/> > address rather than your > own mail platform? OK, so I'm feeding the troll at this point. > > I've run more throughput on ASSP on similar vintage Solaris box, and if > you think compiling all those perl modules on Linux is a chore, try it on > Solaris for an educational experience. I know at least one university ran > all their student mail through ASSP without too much stress. > > On Thu, 7 Nov 2019, Michał Górzec wrote: > > > So far I've been running assp on very small mail servers. Now I've set it > > up on a server that processes about 30 000 emails a day (whcich is not > that > > much, I've planed setting it for other server that processes about 180 > 000 > > emails a day). It turned that assp is real cpu hog. It consumes about > > 40-50% of whole Xenon E3-1245 V2 cpu power (all cores) under such load. I > > could not believe that. I've tried disabling tests in assp. Even with > > almost everything disabled it sill consumed same amount of cpu power! > Only > > setting * in transparent proxy mode reduced this... but only to about > > 10-15% cpu power! So I still cloud not believe it is assp fault. I've > tried > > setting this system on other operating systems - ubuntu 18.04, centos 8, > > centos7, fedora 31, debian 10. Perl 5.30 , perl 5.28, perl 5.26 from > repos, > > perl 5.30, 5.24 compiled from source. Cpan modules installed from repos. > > Cpan modules installed from source. Every single time it was exactly same > > high cpu usage. I've wasted few days on those tests. > > > > -- > Andre van Eyssen. Phone: +61 417 211 788 > mail: *an...@purplecow.org* <an...@purplecow.org> > *http://andre.purplecow.org* <http://andre.purplecow.org/> > About & Contact: *http://www.purplecow.org/andre.html* > <http://www.purplecow.org/andre.html> > _______________________________________________ > Assp-user mailing list > *Assp-user@lists.sourceforge.net* <Assp-user@lists.sourceforge.net> > *https://lists.sourceforge.net/lists/listinfo/assp-user* > <https://lists.sourceforge.net/lists/listinfo/assp-user> > _______________________________________________ > Assp-user mailing list > Assp-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/assp-user > > > > > DISCLAIMER: > ******************************************************* > This email and any files transmitted with it may be confidential, legally > privileged and protected in law and are intended solely for the use of the > individual to whom it is addressed. > This email was multiple times scanned for viruses. 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