# tcp\_defer\_accept
啟用tcp\_defer\_accept特性，可以設置為一個數值，表示當一個TCP連接有數據發送時才觸發accept。
~~~
tcp_defer_accept => 5
~~~
啟用tcp\_defer\_accept特性后，accept和onConnect對應的時間會發生變化。如果設置為5秒：
* 客戶端連接到服務器后不會立即觸發accept
* 在5秒內客戶端發送數據，此時會同時順序觸發accept/onConnect/onReceive
* 在5秒內客戶端沒有發送任何數據，此時會觸發accept/onConnect
> tcp\_defer\_accept的可以提高Accept操作的效率
- 序言
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- Swoole的實現
- Reactor線程
- Manager進程
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- 在php-fpm或apache中使用swoole
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- TCP/UDP壓測工具
- swoole服務器如何做到無人值守100%可用
- MySQL的連接池、異步、斷線重連
- PHP中哪些函數是同步阻塞的
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- 隊列（Queue）
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- 定長數組（SplFixedArray）
- 使用jemalloc優化swoole內存分配性能
- C開發者如何使用Swoole
- C++開發者如何使用Swoole
- 使用systemd管理swoole服務
- 網卡中斷設置
- 將Swoole靜態編譯內嵌到PHP
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- 日志等級控制
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- 附錄：TCP連接的狀態
- 附錄：tcpdump抓包工具的使用
- 附錄：strace工具的使用
- 附錄：gdb工具的使用
- 附錄：lsof工具的使用
- 附錄：perf工具的使用
- 附錄：編譯PHP擴展的相關工具
- 備用：已移除的歷史特性
- swoole_server->handler
- task_worker_max
- swoole_server->addtimer
- swoole_server->deltimer
- onTimer
- swoole_timer_add
- swoole_timer_del
- swoole_get_mysqli_sock
- swoole_mysql_query
- onMasterConnect
- onMasterClose
- Nginx/Golang/Swoole/Node.js的性能對比
- Coroutine::call_user_func
- Coroutine::call_user_func_array
- Coroutine\Channel::select
- task_async
- 歷史：版本更新記錄（1.x）
- 1.10.3
- 1.10.2
- 1.10.1
- 1.10.0
- 1.9.23
- 1.9.22
- 1.9.19
- 1.9.18
- 1.9.17
- 1.9.16
- 1.9.15
- 1.9.14
- 1.9.12
- 1.9.11
- 1.9.9
- 1.9.7
- 1.9.6
- 1.9.5
- 1.9.4
- 1.9.3
- 1.9.2
- 1.9.1
- 1.9.0
- 1.8.13
- 1.8.12
- 1.8.11
- 1.8.10
- 1.8.9
- 1.8.8
- 1.8.7
- 1.8.6
- 1.8.5
- 1.8.4
- 1.8.3
- 1.8.2
- 1.8.1
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