openresty

Commit Graph

Author	SHA1	Message	Date
spacewander	cf7516fcbc	optimize: added an NGINX core patch to ensure unused listening fds are closed when 'reuseport' is used. When `reuseport` is enabled in the `listen` directive, Nginx will create a listening fd for each worker process in the master process. These fds will be inherited by the worker processes, but most of them are unused. For example, considering we have 32 listening ip:port configurations and 64 worker processes, each worker process will inherit 2048 (32 * 64) listening fds, but only 32 fds are used. By closing the unused fds, this change could save up to 2016 (32 * 63) fds in a worker process. It doesn't affect the listening socket, since there is only one used fd which associates to the socket with or without this change. Co-authored-by: Thibault Charbonnier <thibaultcha@me.com>	5 years ago

Author

SHA1

Message

Date

spacewander

cf7516fcbc

optimize: added an NGINX core patch to ensure unused listening fds are closed when 'reuseport' is used.

When `reuseport` is enabled in the `listen` directive, Nginx will create
a listening fd for each worker process in the master process.

These fds will be inherited by the worker processes, but most of them
are unused. For example, considering we have 32 listening ip:port
configurations and 64 worker processes, each worker process will inherit
2048 (32 * 64) listening fds, but only 32 fds are used. By closing the
unused fds, this change could save up to 2016 (32 * 63) fds in a worker
process.

It doesn't affect the listening socket, since there is only one used fd
which associates to the socket with or without this change.

Co-authored-by: Thibault Charbonnier <thibaultcha@me.com>

1 Commits (9ce78f62c5c02ca352c17e8b2fbc1436f26b4d02)