[Dovecot] Dovecot / FreeBSD / Nfs mailstore / Index=memory

[richs at whidbey.net]

Timo Sirainen wrote:
> On Wed, 2008-03-19 at 09:13 +0100, Xavier Beaudouin wrote:
>> Hello,
>>
>> I have recently changed imap from Courier-imap to dovecot because of  
>> serial problems with courier-imap, I have being forced to do it very  
>> quickly... and without extensives tests.
>>
>> I have 3 mails servers (freebsd based) behind a load balancer and a  
>> nfs mailstore on a netapp.
>>
>> On my first tests I have setup the index into some nfs shared mount,  
>> but it seems that some imap clients are going mad when deleting files  
>> (mostly because they do open some new imap connection and the index  
>> was not clean) so I have changed index to memory.
>>
>> This has fixed one of my problems.
> 
> Best solution would be to use v1.1 and its mail_nfs_*=yes settings. They
> make Dovecot work very well with NFS.

We're using v1.1rc3 in production, with indexes on NFS, and performance 
has never been better.  Before 1.1 we too had to use index=memory, which 
caused SORT on large (4k+ messages) mailboxes to take up to a minute. 
Now it takes 1-2 seconds.

-Rich