How to correctly count the number of allowed processes in linux?

Question

linux

Good afternoon, zabbix processes multiply, swears that Too many processes on servers,
tell me how to calculate the allowable number of processes on the server, I read that it depends on the RAM
, let's say there is 16GB of RAM, 10GB is occupied.
ps aux | wc -l
555

Answer 1

A similar question was asked here . It was suggested that if it does not load the processor (2-4 in several threads) and there is enough memory, then the threshold (more than 300) can be raised.
On our mailer:
# ps -ef | awk '{ print $8 }' | sort -n | uniq -c | sort -n | tail -5
11 /usr/sbin/amavisd-new
12 /usr/sbin/apache2
25 smtpd
181 dovecot/imap-login 211 dovecot
/imap

Answer 2

Too many processes on server is just a warning of zyabbix, the threshold of which is configured in the configs.