<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">On 22 Jul 2019, at 17.45, Alessio Cecchi <<a href="mailto:alessio@skye.it" class="">alessio@skye.it</a>> wrote:<br class=""><div><blockquote type="cite" class=""><br class="Apple-interchange-newline"><div class="">
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<div class="moz-cite-prefix">one server of the ring is now running Dovecot 2.3.7 and works
fine with the others Dovecot 2.2 since 3 days.</div><p class="">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).</p></div></div></blockquote>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.</div><div><br class=""></div><div>The SSL code in login processes changed in v2.3, so I wonder if the new code has some performance issues.</div><div><br class=""></div></body></html>