[ext] 2.3.7 slower than 2.3.6?

[Ralf Hildebrandt]

* Timo Sirainen via dovecot <dovecot at dovecot.org>:

> > And alas, I had a look at the monitoring and found that disk IO has
> > increase A LOT after the update: https://www.arschkrebs.de/images/dovecot-disk-io-increase.png
> > 
> > I zoomed in and found that the sudden increace in IO coincides with
> > the update to 2.3.7 (14:35): https://www.arschkrebs.de/images/dovecot-io-2.png <https://www.arschkrebs.de/images/dovecot-io-2.png>
> 

> Do the different disks have different kinds of data? 

All of the data is an /dev/sda1

> Like you seem to be using external attachments and fts? 

Jup, using that, but on one disk

> Also your doveconf -n
> doesn't show what fts backend you're using. Or is it just
> half-configured and not really used?

I used to use lucene, but then I had issues building it
and commented it out. 

Looking now, it turns out that your packages come with lucene support...
Reenabling:

mail_plugins = zlib fts fts_lucene

...

plugin {
  fts = lucene
  fts_autoindex = yes
  fts_languages = de,en
  fts_lucene = whitespace_chars=@.
  zlib_save = gz
  zlib_save_level = 5
}
	    


-- 
Ralf Hildebrandt
  Geschäftsbereich IT | Abteilung Netzwerk
  Charité - Universitätsmedizin Berlin
  Campus Benjamin Franklin
  Hindenburgdamm 30 | D-12203 Berlin
  Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
  ralf.hildebrandt at charite.de | https://www.charite.de