Check official doc for understanding parameters: https://www.odoo.com/documentation/8.0/reference/cmdline.html
dbfilter in config file or --db-filter parameter in running command must be:
^%h$
be sure, that you don't use db_name in config file and don't run odoo with -d (--database) parameter
Set workers parameter to 3 or above. In some context it could be less, but 3 is enough at any case.
Increase this value. Set it 600 or more.
Increase this value. Set it 1200 or more.
It must include
- odoo addons
- odoo-saas-tools
- dependencies