Merge of r4892: keepalive memory usage optimization.
The ngx_http_keepalive_handler() function is now trying to not keep c->buffer's memory for idle connections. This behaviour is consistent with the ngx_http_set_keepalive() function and it should decrease memory usage in some cases (especially if epoll/rtsig is used).
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@ -2745,6 +2745,20 @@ ngx_http_keepalive_handler(ngx_event_t *rev)
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ngx_http_close_connection(c);
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}
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/*
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* Like ngx_http_set_keepalive() we are trying to not hold
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* c->buffer's memory for a keepalive connection.
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*/
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if (ngx_pfree(c->pool, b->start) == NGX_OK) {
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/*
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* the special note that c->buffer's memory was freed
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*/
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b->pos = NULL;
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}
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return;
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}
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