Hello Ralf, this is strange. The biggest changes would have to be expected when upgrading to OTRS 4, because there we added a centralized in-memory cache which should increase performance but partly also could lead to higher memory usage. For OTRS 5 there should be no such effect. How big are your apache processes? Which worker do you use (prefork)? What’s the maximum requests per child setting for the processes? Best regards, Martin Gruner Team Lead R&D OTRS AG Bahnhofplatz 1a 94315 Straubing T: +49 (0)6172 681988 0 F: +49 (0)9421 56818 18 I: www.otrs.com/ Geschäftssitz: Bad Homburg, Amtsgericht: Bad Homburg, HRB 10751, USt-Nr.: DE256610065 Aufsichtsratsvorsitzender: Burchard Steinbild, Vorstand: André Mindermann (Vorsitzender), Christopher Kuhn, Sabine Riedel Mobile Kommunikation und transparente Prozesse - Mit der OTRS Business Solution™ Managed 5 schnell und ohne eigene IT-Ressourcen starten - Jetzt neue Features entdecken und bestellen https://www.otrs.com/neu-in-otrs-business-solution-5-mobile-kommunikation-tr...

Am 20.04.2016 um 16:16 schrieb Ralf Hildebrandt :

I successfully upgraded from the most recent 4.x version of OTRS to 5.0.9 and noticed a sudden increase in memory usage:

The machine starts to use swap, and when checking which processes are using the most swap I'm seeing:

otrs:~# { date;for f in /proc/[0-9]*/status; do awk '{k[$1]=$2} END { if (k["VmSwap:"]) print k["Pid:"],k["Name:"],k["VmSwap:"];}' $f 2>/dev/null; done | sort -n ; }

Mi 20. Apr 15:55:05 CEST 2016 1 init 600 ... 26138 otrs.Daemon.pl 8240 26169 /usr/sbin/apach 4964 26243 /usr/sbin/apach 4832 26311 /usr/sbin/apach 4916 26835 /usr/sbin/apach 5136 27219 /usr/sbin/apach 5136 27701 /usr/sbin/apach 8528 27711 /usr/sbin/apach 5108 27746 /usr/sbin/apach 5256 27747 /usr/sbin/apach 8532

So it's apache/mod_perl. Is that normal?

-- Ralf Hildebrandt Charite Universitätsmedizin Berlin ralf.hildebrandt@charite.de Campus Benjamin Franklin http://www.charite.de Hindenburgdamm 30, 12203 Berlin Geschäftsbereich IT, Abt. Netzwerk fon: +49-30-450.570.155 --------------------------------------------------------------------- OTRS mailing list: otrs - Webpage: http://otrs.org/ Archive: http://lists.otrs.org/pipermail/otrs To unsubscribe: http://lists.otrs.org/cgi-bin/listinfo/otrs