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view src/event/ngx_event_connect.h @ 4134:a3203c4521c6
The "worker_aio_requests" directive.
The default value is 32 AIO simultaneous requests per worker. Previously
they were hardcoded to 1024, and it was too large, since Linux allocated
them early on io_setup(), but not on request itself. So with default value
of /proc/sys/fs/aio-max-nr equal to 65536 only 64 worker processes could
be run simultaneously. 32 AIO requests are enough for modern disks even if
server runs only 1 worker.
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Tue, 20 Sep 2011 07:30:09 +0000 |
parents | fcd98af88df3 |
children | d620f497c50f |
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/* * Copyright (C) Igor Sysoev */ #ifndef _NGX_EVENT_CONNECT_H_INCLUDED_ #define _NGX_EVENT_CONNECT_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> #define NGX_PEER_KEEPALIVE 1 #define NGX_PEER_NEXT 2 #define NGX_PEER_FAILED 4 typedef struct ngx_peer_connection_s ngx_peer_connection_t; typedef ngx_int_t (*ngx_event_get_peer_pt)(ngx_peer_connection_t *pc, void *data); typedef void (*ngx_event_free_peer_pt)(ngx_peer_connection_t *pc, void *data, ngx_uint_t state); #if (NGX_SSL) typedef ngx_int_t (*ngx_event_set_peer_session_pt)(ngx_peer_connection_t *pc, void *data); typedef void (*ngx_event_save_peer_session_pt)(ngx_peer_connection_t *pc, void *data); #endif struct ngx_peer_connection_s { ngx_connection_t *connection; struct sockaddr *sockaddr; socklen_t socklen; ngx_str_t *name; ngx_uint_t tries; ngx_event_get_peer_pt get; ngx_event_free_peer_pt free; void *data; #if (NGX_SSL) ngx_event_set_peer_session_pt set_session; ngx_event_save_peer_session_pt save_session; #endif #if (NGX_THREADS) ngx_atomic_t *lock; #endif ngx_addr_t *local; int rcvbuf; ngx_log_t *log; unsigned cached:1; /* ngx_connection_log_error_e */ unsigned log_error:2; }; ngx_int_t ngx_event_connect_peer(ngx_peer_connection_t *pc); ngx_int_t ngx_event_get_peer(ngx_peer_connection_t *pc, void *data); #endif /* _NGX_EVENT_CONNECT_H_INCLUDED_ */