Mercurial > hg > nginx
diff src/core/ngx_connection.c @ 6220:5e6142609e48
Core: idle connections now closed only once on exiting.
Iterating through all connections takes a lot of CPU time, especially
with large number of worker connections configured. As a result
nginx processes used to consume CPU time during graceful shutdown.
To mitigate this we now only do a full scan for idle connections when
shutdown signal is received.
Transitions of connections to idle ones are now expected to be
avoided if the ngx_exiting flag is set. The upstream keepalive module
was modified to follow this.
| author | Valentin Bartenev <vbart@nginx.com> |
|---|---|
| date | Tue, 11 Aug 2015 16:28:55 +0300 |
| parents | 3096ae76ba47 |
| children | 954b67727af3 |
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--- a/src/core/ngx_connection.c +++ b/src/core/ngx_connection.c @@ -1163,6 +1163,26 @@ ngx_drain_connections(void) } +void +ngx_close_idle_connections(ngx_cycle_t *cycle) +{ + ngx_uint_t i; + ngx_connection_t *c; + + c = cycle->connections; + + for (i = 0; i < cycle->connection_n; i++) { + + /* THREAD: lock */ + + if (c[i].fd != -1 && c[i].idle) { + c[i].close = 1; + c[i].read->handler(c[i].read); + } + } +} + + ngx_int_t ngx_connection_local_sockaddr(ngx_connection_t *c, ngx_str_t *s, ngx_uint_t port)