I work with Odoo Version 15 with one database, i use worker = 0, everything is good and odoo runs very good with 20 users.

But when i activate the workers (Example : workers = 4 or 6 or 9 just for testing), i cant open odoo, it become very slow even if im the only one using odoo and it will take 60 seconds to just refresh the main page of odoo.

Even when i activate the workers, The RAM and CPUs uses just like 20% of there limit. it doesnt reach a level where i can say that is because of the hardware performances.

The objectif is to have 60 to 80 concurent users.

I'm using a server with :

• 32 Go RAM
• 24 CPUs (Intel® Xeon(R) Silver 4310 CPU @ 2.10GHz × 24)
• 2.4 TB SSD

My odoo.conf :

[options]

addons_path = /opt/odoo/odoo/addons,/opt/odoo/addons_custom/test/PBE,
admin_passwd = admin
db_host = False
db_port = 5432
db_user = odoo
db_password = odoopwd
http_port = 8069
data_dir = /odoo_filestore_2

proxy_mode=True

limit_time_cpu = 360
limit_time_real = 36000

db_maxconn = 120
workers = 9

longpolling_port = 8072

logfile = /var/log/odoo/odoo.log

I tried to activate workers

Expected : I expect odoo tu run without slowing (refresh time : 2 secondes like when workers = 0)

Result : Odoo run very slow (refresh time : more than 1 minute)