Using the reuseport Feature
When Nginx is used, excessive concurrent network connections may cause socket operations to become a performance bottleneck, which severely limits the kernel performance. Use the reuseport feature to address this problem. The reuseport feature allows a listen socket to be created for each Nginx worker process, which significantly reduces the socket contention.
Add the keyword reuseport after the listen port in the nginx.conf file.
listen 83 reuseport;
Parent topic: Nginx Tuning