I'm new to Kolab but familiar with Roundcube. Couple a weeks ago i installed fresh vmware CentOS7 and Kolab 3.4 , but when testing 3.4 i notice that Kolab 16 came out. So i installed that to another vmware VM. Both in same server with same memory/cpu/disks.
i configured multidomain for both and they are working, but Kolab 16 is having strange performance issues.
In morning i try to load login page, it takes like 1 minute to login, same when try to read inbox messages after that, takes 10sec to open message. Watching server load it tells same, just like missing I/O from disk, every processes are slow.
BUT in same time with kolab 3.4 no problems, little slower that our other plain Roundcube webmails, but thats understood because they don't have all plugins. Both show messages 1-2 second after clicking. But every click i do in Kolab 16 shows more load in "top" compare to 3.4 in same hardware, in same server.
Most strange thing is that after playing around sometime with kolab 16 , it starts to works as fast ?
Rebooting Kolab 16 machine also seems to help, not 100% sure for that, have to test it more.
Something to do with guam that 3.4 doesn't have ? Or some cache thing ?
Any ideas how to search problem, remove 1 plugin at time from Roundcube and every morning test if problem goes away ? What log's to follow ?