Hi Timo,
here you can see two images with the load average and CPU usage with
Dovecot 2.2 (Centos 6) and 2.3 (Centos 7) on the same hardware and same
configuration:
https://imgur.com/a/1hsItlc
Load average increment is relevant but CPU usage is similar.
Il 22/07/19 18:49, Timo Sirainen ha scritto:
On 22 Jul 2019, at 17.45, Alessio Cecchi <[email protected]
<mailto:[email protected]>> wrote:
one server of the ring is now running Dovecot 2.3.7 and works fine
with the others Dovecot 2.2 since 3 days.
I notice only that the load avarage of this CentOS 7 server is higher
compared with CentOS 6 and Dovecot 2.2, but I don't know if is
related to the new operating system or Dovecot (hardware is the same).
How much higher? Can you check the individual dovecot processes' CPU
usage? I guess mainly director, imap-login and pop3-login. The
director code should be pretty much the same though.
The SSL code in login processes changed in v2.3, so I wonder if the
new code has some performance issues.
--
Alessio Cecchi
Postmaster @ http://www.qboxmail.it
https://www.linkedin.com/in/alessice
