[Dovecot] Todays Performance Data for 2.0.x

[Ralf Hildebrandt]

* Timo Sirainen <tss at iki.fi>:

> Hmm. I added a few minor optimizations to hg, which probably don't help
> all that much. Removing config and auth-master lookups didn't make much
> of a difference, so I don't think those are the main problem.
> 
> I haven't yet seen any logparse lines about master, log or anvil
> processes. Also the auth processes were probably auth workers, not the
> master auth process. Do you have those? (They won't be logged until you
> stop Dovecot.)

Oh, I'll recompile from hg and let 2.0 run until tomorrow noon. Then I
should have some logging after stopping it.

> You could also next time try "configure --without-shared-libs", maybe
> that makes some difference since there's less work for ld.so at startup.

I'll do this as well. Recompiling as I write.
 
> Looking at your config.. This isn't doing anything useful anymore in
> v2.0, just wasting some CPU:
> 
> service imap {
>   drop_priv_before_exec = yes
> }
> Same for pop3/managesieve.

I removed those now!
 
> Also I remember asking about passdb shadow and you said it's because of
> master users. I think you could avoid that by just removing pass=yes
> from the master passdb. If you try to log in with invalid username, the
> userdb lookup should fail later.
> 

-- 
Ralf Hildebrandt
  Geschäftsbereich IT | Abteilung Netzwerk
  Charité - Universitätsmedizin Berlin
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