Hi,
thanks for your help!
I will set this settings and try it again.
Thats right, the server is swapping, but aren´t a problem with alpha4 .... ?!?
Have some more memory and will spend it!!! :)
I tell you if it helps or not ...
Thanks again.
Dominik
Am Donnerstag, den 19.10.2006, 10:27 -0400 schrieb Jeff A. Earickson:
Hi,
I am running dovecot rc10 on a Sun E220R (sparc) for 3000 users with Solaris 10 version 6/06 plus current patches. While the performance isn't great (it is a slow 2 cpu x 450 MHz box), it isn't bad either.
I use mbox format (/var/mail is NFS mounted) and ZFS for home directories. Authentication is via PAM. PAM uses kerberos to Active Directory.
I have the following in my /etc/system file for dovecot:
- double file descriptor limits for dovecot set rlim_fd_cur = 65536 set rlim_fd_max = 131072
I also discovered that I need this setting in my dovecot.conf, or it will fail over with the "shutting down too early/too many open files" problem that is often discussed on this list:
login_process_per_connection = no
Are you sure that your E450 isn't swapping? The "growing data stack" sounds like lack of memory/swap issues.
Jeff Earickson Colby College
On Thu, 19 Oct 2006, Dominik Saar wrote:
Date: Thu, 19 Oct 2006 14:04:03 +0200 From: Dominik Saar dominik.saar@1und1.de To: dovecot@dovecot.org Subject: [Dovecot] performance problems with rc10 and solaris 10
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