Nginx Optimization: understanding sendfile, tcp_nodelay and tcp_nopush

This article a is translation by popular request of Optimisations Nginx, bien comprendre sendfile, tcpnodelay et tcpnopush I wrote in French in January. Most articles dealing with optimizing Nginx performances recommend to use sendfile, tcp_nodelay and tcp_nopush options in the nginx.conf configuration file. Unfortunately, almost none of them tell neither how they impact the Web server nor how the

[reboot_in]

“senfile、tcp_nodelay、tcp_nopush”

[fcicq]

no_push optimize the amount of data sent at once

[vanbraam]

tcp_nodelay:レスポンス重視,tcp_nopush:スループット重視,sendfile:全部kernel内での処理だから速いけどsocket使えない;全部入り:最初tcp_nopush有効で,一度full bufferになったらtcp_nodelayに移行;writev(2)には触れてない;"baby seals"って何ネタ?

[tmatsuu]

おー、あの項目いつもよくわからなかったので。あとで必ず読む

[msh514]

nginx performance