First of all, glad i found Grommunio as an alternative to Zarafa and Kopano.
I have installed Grommunio in a Virtual Machine on my Synology DS918+, 4xcpu cores at 1.5 Ghz, i set 6GB of RAM for the VM. Installation was a bit complex for me, but i managed and all is up and running, with 4 mailboxes migrated from Kopano. Quite large mailboxes, 10.000 - 30.000 items per mailbox. Syncing to two mobile phones is working quite well.
My problem is with intermittend serious time-outs in the webclient (port 80). When these timeouts occur, the spinning circle is showing for minutes, the only way to get rid of it is to close the browser (Chrome) or restart the Virtual Machine. When this occurs, the cpu load shown in the admin dashboard is 25-50%, with most noticable some 25% 'io'. When going to Terminal, 'Top' shows 'http', 'php-fpm' and 'zcore' each at about 25%, and the rest of the processes make up for the rest of 25% cpu. So, CPU is peaking at 100%, though the Admin Dashboard does not schow 100%.
Ways to induce the problem are:
- 100% problem every time: searching for a keyword in 'all folders', the web-client never recuperates from this (or i didnt wait long enough, i waited many minutes)
- many times: first weblogin after a restart of the VM (spinning circle right after entering password, taking minutes to show the folders.
- frequently: when already logged in the web-cliënt: clicking on a folder with a large amount of emails .
I have searched many things and tried many things:
- tweaked the maria database (outside the VM, connecting via ip adress)
- tweaked php-fpm config (pool stuff etc)
- ran grommunio-index-run.sh
- changed the VM io driver from IDE to VirtIO
- ore memory to the VM, but 3GB or 6Gb does not make a difference
and many more stuff i forgot. But somehow i think this is not a matter of minor tweaking some cfg, because the problem is so drastic when it occurs. The only pattern i see is that the problem occurs more frequent with very large folder (like 20.000 items in the Inbox).
How do i approach solving this problem methodically?
Attached is a screenshot of 'top', minutes after i closed the webclient where i started a search in 'all folders' resulting in an everlasting spinning circle.