Mercurial > hg > nginx
comparison src/http/modules/ngx_http_upstream_keepalive_module.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 | 87d48f8793b6 |
children | 78b4e10b4367 |
comparison
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6219:808fd1f0b94b | 6220:5e6142609e48 |
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300 | 300 |
301 if (!u->keepalive) { | 301 if (!u->keepalive) { |
302 goto invalid; | 302 goto invalid; |
303 } | 303 } |
304 | 304 |
305 if (ngx_terminate || ngx_exiting) { | |
306 goto invalid; | |
307 } | |
308 | |
305 if (ngx_handle_read_event(c->read, 0) != NGX_OK) { | 309 if (ngx_handle_read_event(c->read, 0) != NGX_OK) { |
306 goto invalid; | 310 goto invalid; |
307 } | 311 } |
308 | 312 |
309 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0, | 313 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0, |