How to Get the Most Out of My 4 vCPU Cores Server 8 GB RAM

[jera]

Hello friends,

Reading on the forum, I see that 2GB of ram and 2CPU is enough to run mailwizz. I have a VPS with 4 vCPU Cores
8 GB RAM and I feel slow, when I manage campaigns of 35k or 45K contacts. So I feel like maybe I'm not getting the most out of my server.

I tried to apply this tutorial (https://kb.mailwizz.com/articles/mysql-mariadb-optimisations/), but they only mention 4 options and in my settings I see that there are more options.

Can you help me to get the most out of my VPS please?

I share my MySQL configuration

[client]
port=3306
socket=/var/run/mysqld/mysqld.sock

[mysqld_safe]
socket=/var/run/mysqld/mysqld.sock

[mysqld]
user=mysql
pid-file=/var/run/mysqld/mysqld.pid
socket=/var/run/mysqld/mysqld.sock
port=3306
basedir=/usr
datadir=/var/lib/mysql
tmpdir=/tmp
lc-messages-dir=/usr/share/mysql
log_error=/var/log/mysql/error.log
innodb_buffer_pool_size=6G
innodb_flush_log_at_trx_commit=2

symbolic-links=0

skip-external-locking
key_buffer_size = 256M
max_allowed_packet = 32M
table_open_cache = 256
sort_buffer_size = 1M
read_buffer_size = 1M
read_rnd_buffer_size = 4M
myisam_sort_buffer_size = 64M
thread_cache_size = 8
query_cache_size= 16M

#innodb_use_native_aio = 0
innodb_file_per_table

max_connections=500
max_user_connections=50
wait_timeout=10
interactive_timeout=50
long_query_time=5

!includedir /etc/mysql/conf.d/

 

[twisted1919]

Most of the time, the slowdown is caused by the time it takes mailwizz to connect and talk to your smtp servers.
You can see this clearly if you do: https://kb.mailwizz.com/articles/debug-send-campaigns-command/ and if your connection timing is more than 200ms, then you have to fix that because that is what slows things down.