[Dovecot] migration 1.2.5 -> 2.0.5 load increased dramatically

Ralf Hildebrandt Ralf.Hildebrandt at charite.de
Wed Oct 6 15:48:48 EEST 2010


* Ralf Hildebrandt <Ralf.Hildebrandt at charite.de>:
> * Ralf Hildebrandt <Ralf.Hildebrandt at charite.de>:
> > During norml operation this morning we're seeing a significantly
> > increased load on the IMAP server (factor 5, from 5 to 25).
> > 
> > Does dovecot need to rebuild index files or perform other IO intensive
> > operations after the upgrade?
> > 
> > We're using Maildir
> > 
> > Our monitoring shows increased "system" time. We're runnign fewer
> > processes, the IO rate ist identical to yesterday, memory usage is
> > identical.
> 
> I found the reason: My excessive number of ca-certificates!

At least I think I did :(

dovecot-lda still invokes doveconf, which still takes about 1.5s
wallclock time.

-- 
Ralf Hildebrandt
  Geschäftsbereich IT | Abteilung Netzwerk
  Charité - Universitätsmedizin Berlin
  Campus Benjamin Franklin
  Hindenburgdamm 30 | D-12203 Berlin
  Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
  ralf.hildebrandt at charite.de | http://www.charite.de
	    


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