On 06/10/2010 13:16, Ralf Hildebrandt wrote:
* Ralf Hildebrandt<ralf.hildebra...@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!
dovecot-lda invoke doveconf, which in turn needs a whooping 1.2s wallclock time
to parse the config!
I pruned the ca-certificates file and removed ALL ca-certificates but the ones
that belong to the certificate chain for postamt.charite.de
Hello Ralf,
Glad to see you found out what the problem was.
I was just wondering if this episode suggested any changes which may be
helpful. I am not an expert on the issue you discovered, so I came up
with some questions which might help guide us.
Do you feel that the problem was more that you were feeding Dovecot an
unusually large certificate pack, or that your certificate pack was
reasonable and Dovecot should be able to cope better with packs of this
size?
Should we write something in the Dovecot wiki about it?
Should we need to suggest an enhancement to Dovecot?
Regards,
Bill
