Hi, Mark Heisterkamp schrieb am 12.04.2010 09:03 Uhr:
> we graded up to cyrus 2.3.16 a few weeks ago and since then the load > average showed values from 200 to 300 a few times per day. The server > has 16 cores, 64GB RAM an is attached to a SAN. This machine is quite > powerfull. It serves about 5000 mailboxes. > > First we "touched" user_deny.db to get rid of these annoying > IOERROR-messages. These messages where replaced by (annoying) 'fetching > user_deny.db'-entries. A normal IMAP-user causes about 500 to 1500 of > such messages in eight hours. > > But we found two users who 'generated' 5000000 (!) and 250000 of such > messages in this period. After phoning them we found out, that they > where using Mac OS X and Thunderbird 3 (the one with 5 Mio messages) and > Mail.app (the other one). Turning off the spotlight-search on > IMAP-folders immediately turned the load average down to a normal value > (about 0.2). > > I think we shouldn't advise 5000 users not to use Spotlight, we should > deactivate user_deny.db. By the way, what is this database really good > for? If we want someone not to use cyrus-service we deny this person by > ldap for example. Kenneth Murchison stated in some mail on this list > that user_deny.db is used once per login, that's definitely not true, it > is used every time the client 'uses' an IMAP-folder and that can be > pretty often! Maybe we can change this behaviour by some config? > > Is it possible to deactivate fetching user_deny.db-entries by some > config-option or do we have to patch the sources? I have this issue, too. But there is no Mac involved. It is just Thunderbird on the client (Win*/Linux) side. I created user_deny.db with touch to make the one error message go away. Now I have lots of "fetching ..." messages in the log (2.3.16). Is there anything to do about this? Marc ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
