dovecot - Sep 2010 - Quotas - per folder message limits?

Is there any way of enforcing a Maildir per-folder message limit in 
Dovecot?

We're finding major performance hits once a threshold of files/directory 
is exceeded. This applies across all common filesystems with the 
threshold differing depending on the FS. GFS2 pretty much _STOPS_ for 10 
minutes when users put 65k+ messages in one folder...

I'm currently running 1.1.20 but looking to update (RHEL5 cluster 
installation)

On Mon, 2010-09-06 at 14:26 +0100, Alan Brown wrote:
> Is there any way of enforcing a Maildir per-folder message limit in 
> Dovecot?
No.
> We're finding major performance hits once a threshold of
files/directory
> is exceeded. This applies across all common filesystems with the 
> threshold differing depending on the FS. GFS2 pretty much _STOPS_ for 10 
> minutes when users put 65k+ messages in one folder...
mdbox would probably work nicely. :)
> I'm currently running 1.1.20 but looking to update (RHEL5 cluster 
> installation)
With v1.2+ you could also try maildir_very_dirty_syncs=yes