[Dovecot] dovecot memory consumption beta vs. old "stable" series

Gunter Ohrner G.Ohrner at post.rwth-aachen.de
Wed Feb 15 01:42:01 EET 2006

Hi Timo!

Am Dienstag, 14. Februar 2006 09:33, schrieb Timo Sirainen:
> > > > messages causes major troubles on this box - more than 500 MB of
> > > > virtual memory allocated to the "imap" process is quite a lot and
> > > > often causes random processes to fall victim to the OOM killer.
> Probably easier if you just try if beta3 has fixed this already, so we
> don't waste time for nothing :)

Ok, I just installed and tested beta3. The occassional "hang" of the 
connection I experienced with the ancient "stable" release seems to be 
gone now.

However, deleting (marking as deleted) large batches of messages still 
requires lots of RAM:

28507 gunter    17   0  211m  30m 8572 R 82.9 50.5   6:45.00 imap

After the operation finishes, dovecot remains at a VIRT size of 209m.

This look pretty much for me, even for deleting 7000 messages in a row.

This machine has 64m of physical RAM and runs the 2.4.27 Linux kernel from 
Debian Sarge.

I've not tried yet if the memory utilization additionally doubles on the 
second try if dovecot got OOM killed on the first - I added sufficient 
swap space before the test - but I could do if this would be interesting 
and/or helpful for you.



Programming today is a race between software engineers striving to build 
bigger and better idiot-proof programs, and the Universe trying to 
produce bigger and better idiots. So far, the Universe is winning.
+                   PGP-verschlüsselte Mails bevorzugt!                 +
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: not available
Url : http://dovecot.org/pipermail/dovecot/attachments/20060215/14432349/attachment.pgp

More information about the dovecot mailing list