Hi, we are faced with some complains from different users which I can partly reproduce or understand.
E.G. they log in to the mail Web Userinterface and try to open a mail, which
takes 5 - 10 seconds, sometimes the mail will not be loaded at all.
Sometimes I can reproduce that for a mail with +- 10kb in size with my account.
Klick on it… it loads … klick some minutes later on the same mail … it will not
load at all.
Some users told me, that opening mails, writing some or add calendars is very
slow while opening the modules or entries in the browser.
This is independent from chrome to firefox or safari on modern new devices and
some folders….
e.g. my sandbox has about 25.000 mails and shows up from my POV quit quick on
an iPhones and in safari on my macbook.
Otter users have to wait a few seconds till the list shows up in mailbox
folders with about 1.000 mails ...
Native mailclients do not show such a „strange“ behavior.
Checking the sogo log I can currently only see the old friend „No child
available to handle incoming request!“ … but no other clues.
That error shows up from time to time and than all sogod processes are using
from 40 to 100% of cpu ….
My PREFORK is at 12, the server is a 12 GB 4 CPU VM. MySQL and Dovecot are on
different VMs.
Where and how may I start to get better performance or debug and find the
„real“ bottleneck?
E.g. what is a special sogo process doing with 100% cpu time?
Thanks for hints and suggestions. Regards . Götz
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