[Dovecot] performance 2.1.17 zlib maildir

[Ralf Hildebrandt]

* Robert Schetterer <rs at sys4.de>:
> Am 20.07.2013 20:30, schrieb Robert Schetterer:
> > Hi Timo, i have reports from few users about lost performance with 2.17
> > maildir bigger mailboxes ( up to 2 GB ), i also use zlib plugin
> > 
> > what about this patch.....,may not working as i should?
> > 
> > http://hg.dovecot.org/dovecot-2.1/rev/9c23d1fb8969
> > 
> > Best Regards
> > MfG Robert Schetterer
> > 
> 
> 
> i checked this reverting to 2.1.15 (had only this pre compiled)
> perfomance gets better with this, looks like the problem is getting more
> worst with having bigger mailboxes and heavy use of subfolder trees
> any idea?

I wonder why this would matter. zlib is compressing EACH message
individually, so the actual SIZE of the mailbox would not matter (the
number of message would matter, though).

Which operations are slow? Folder listing? Actually accessing messages?

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