cyrus-imapd 2.2 db3 or db4?

[Lawrence Greenfield]

   Date: Wed, 7 May 2003 15:04:16 -0400 (EDT)
   From: Igor Brezac <igor at ipass.net>
[...]
   What sleepycat db version do you use?  Something is broken with the 4.1.25
   version on busy sites.  It works fine on small installations.  I can tweak
   db env (via DB_CONFIG), but eventually it runs out of resources and
   duplicate suppression stops working.  What is the drawback of turning
   duplicate suppression off besides diskspace?  My logs show less then .01%
   duplicate messages.  Furthermore, chechpoint of a large duplicate.db
   (50MB) takes over 10 minutes on my system and high cpu utilization.

We currently use db 4.0.14. I don't think we've tested any 4.1.x
versions.

I haven't noticed any problems with our checkpointing times; I see a
~230 meg deliver.db file on one machine.

Larry