[Dovecot] enourmous amount of disc writes

[Rainer Sigl]

Hi List,
on my mailserver (exim4, dovecot 1.0.0, postgresql, ubuntu dapper, about 
500 users) I record an enourmous amount of disc writes (up to 18000 
blocks written each second) in the time where most of users are active.
This IO activity causes wait-states on the disc interface (RAID5) and 
finally slows down my mailmachine. Is there a explanation for these disc 
writes respectively is there a possibility to minimize this activity. 
Stopping Dovecot on this machine causes stopping most of the disc activity.

Regards
Rainer Sigl


-- 
-----------------
Rainer Sigl,                      | email: sigl at mpe.mpg.de
MPI f. extraterrestrische Physik, | phone: +49 (89) 30000-3557
Postfach 1312,                    | fax:   +49 (89) 30000-3569
D-85741 Garching, Germany         | web:   http://www.mpe.mpg.de/~sigl/
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/x-pkcs7-signature
Size: 5804 bytes
Desc: S/MIME Cryptographic Signature
Url : http://dovecot.org/pipermail/dovecot/attachments/20090615/73a4b697/attachment.bin