Long startup time (1h 30m)

[Dennis Sjogren]

Greetings!

We've been running the Cyrus IMAP server for couple of months now. Apart 
from the server experiencing high load (we'll throw money at it and see 
what happens) from time to time, it's mostly been smooth sailing.

However, one thing is a bit worrying. Startup of the Cyrus software 
takes about 1 hour and 30 minutes. For some reason, email services seems 
important to our users. :) Anyway, as any organization, we try to 
minimize downtime in core services as much as possible, but this long 
startup time really makes that difficult.

I've googled ALOT, and found some users with similar problems or worse. 
Some guy had a startup time of 4 hours! However, no real solution has 
emerged. The wiki suggests checkpointing more often, but we already do 
that every 10 minutes. Shouldn't that be enough?

Any suggestions, ideas, comments would be appreciated. Developers 
comments? Here are our specs:

HOST: Sun Sunfire V240
CPU:  2 x 1.2GHz
MEM:  2GB (will be upgraded to 4GB asap)
DISK: (db) 2 x 10k RPM, internal, mirrored, UFS, nologging
DISK: (spool) SAN (6120-system)

Cyrus v2.2.5, BerkelyDB 4.2 + default patches
Everything compiled with GCC 3.4.0
mailboxes.db about 10MB
deliver.db about 18MB
About 10k users on system, unknown number of mailboxes, though about 4M 
inodes are used on /var/spool/imap.

Thanks in advance!

Best regards,

Dennis "Dempa" Sjogren
Dalarna University, Sweden

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