[Dovecot] performance problems with rc10 and solaris 10

[Dominik Saar]

Hi,

i have 2 dovecot imap server running on solaris 10

The primary server with dovecot 1.0.alpha4 is running with best
performance on Sun Sparc E4k5 with 8x 450MHz

The secondary with rc10 has ugly performanceproblems on Sun E450 wth 4x
450MHz. Every new imap process takes permanent 25% cpu usage

List the folder and fetch message are both slowy!

Both servers are configred with ldap backend


preventive i deleted for rc10 the complet index and controlfiles,
because the spooldir is a sync from the masterserver with dovecot
alpha4. I thought its a little bit slowy because of my 30.000 mails.

the indexfiles are created now, but the still ugly slow ....

For debugging i compiled rc10 again --with-debug=yes and start dovecot
with solaris truss

truss tells nothing to explain this behavor
logentrys from dovecot has this warnings:

-->

dovecot: Oct 18 14:51:47 Warning: IMAP(saar): Growing pool 'storage'
with: 1024
dovecot: Oct 18 14:51:47 Info: IMAP(saar): dirsize quota limit =
750000kB
dovecot: Oct 18 14:51:47 Warning: IMAP(saar): Growing data stack with:
32768
dovecot: Oct 18 14:51:47 Warning: IMAP(saar): Growing data stack with:
65536
dovecot: Oct 18 14:51:48 Warning: IMAP(saar): Growing data stack with:
131072
dovecot: Oct 18 14:51:48 Warning: IMAP(saar): Growing pool 'uidlist
record_pool' with: 32768

<--

also i compiled rc10 --with-notify=none, no result

to ensure it isn´t the solaris system, i compiled alpha4.
Result: good performance

Any ideas?

Cheers

Dominik