[Dovecot] Performance of Maildir vs sdbox/mdbox

[Jan-Frode Myklebust]

On Wed, Jan 18, 2012 at 07:58:31PM +0200, Timo Sirainen wrote:
> 
> > --i.e. all the
> > suggestions at http://wiki2.dovecot.org/NFS. Is that definitely not
> > the case? Is there anything else (beyond moving to a director-based
> > architecture) that can mitigate the risk of index corruption? In our
> > case, incoming IMAP/POP are 'stuck' to servers based on IP persistence
> > for a given amount of time, but incoming LDA is randomly distributed.
> 
> What's the problem with director-based architecture?

It hasn't been working reliably for lmtp in v2.0. To quote yourself:

----8<----8<----8<-----8<-----8<-----8<----8<-----8<----8<----8<--

	I think the way I originally planned LMTP proxying to work is simply too
	complex to work reliably, perhaps even if the code was bug-free. So
	instead of reading+writing DATA at the same time, this patch changes the
	DATA to be first read into memory or temp file, and then from there read
	and sent to the LMTP backends:

		http://hg.dovecot.org/dovecot-2.1/raw-rev/51d87deb5c26

----8<----8<----8<-----8<-----8<-----8<----8<-----8<----8<----8<--

unfortunately I haven't tested that patch, so I have no idea if it 
fixed the issues or not...


  -jf