Good morning,
For a year our institute in Poland uses a roundcube. Everything worked great until recently. Suddenly something happened and everything works very slowly.
What equipment we have:
Virtual machine on VmWare 4 processors, 8GB of ram.
The data drive is connected using NFS v3 from the EMC2 array
www: nginx
database: mariadb
php-fpm: php-fpm-5.6.0-0.16.RC2.el6.remi.x86_64
roundcube
890 mailboxes
901 aliases
User boxes are limited to 5GB, 10GB and 15GB.
It always takes up to 15s. This is a separate server only with roundcube.
Load the entire email list in your inbox, and open multiple emails. Some emails have 10Mb and some 300kB and they open up just as slowly. Interestingly, the box which has 10GB and over 6,000 emails works faster than what has 5GB and 3K emails. This does not happen to all users at the moment we have about 30% but it is already noticeable.
I read the forum, I found some ideas, but they did not produce results. Time may be reduced by a few seconds. Can we reach the limit of data boxes?
Network administrators do not see too much traffic and claim to be ok.
Matrix administrators also claim that it is ok, there are no bugs or problems with the connection.
Best regards
PiotrR