[Dovecot] LMTP in 2.0: concurrency, inet sockets

[Stefan Foerster]

* Stan Hoeppner <stan at hardwarefreak.com>:
> Stefan Foerster put forth on 2/7/2010 6:39 AM:
> > For 100k messages, delivery to a Maildir store using Postifx's pipe(8)
> > and Dovecot's deliver took 4319s, which equals 23.15 delivieries per
> > second - and that's with the pipe(8) delivery agent haning around for
> > up to 100 seconds, being reused for multiple transactions.
> > 
> > Dovecot 2.0, with LMTP, was finished after 4007s, which equals 24.96
> > deliveries per second.
> > 
> > Apart from an almost 10% difference, the system felt a lot less
> > "sluggish" (read: I/O saturated) with 2.0b2 - unfortunately, I didn't
> > run sysstat during the test, but I'll get that done next weekend.
> > 
> > Keep up the good work!
> 
> Thanks for the test info Stefan.  What are the hardware specs of the system you
> ran this test on?

KVM guest, dedicated LV using virtio, underlying single SATA disk. The
system had 1024Mb of RAM and two CPU cores (out of eight) assigned.


Stefan