Things to know (best practices and “issues”) READ IT !!! — uWSGI 2.0 documentation
https://uwsgi-docs.readthedocs.io/en/latest/ThingsToKnow.html
If your (Linux) server seems to have lots of idle workers, but performance is still sub-par, you may want to look at the value of the ip_conntrack_max system variable (/proc/sys/net/ipv4/ip_conntrack_max) and increase it to see if it helps.