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云主機和虛擬主機

Nginx 服務(wù)器編譯優(yōu)化

作者：qvdv 來(lái)源：齊迪網(wǎng)絡(luò )科技更新時(shí)間：2015-12-16

Nginx如何編譯呢？本章節對Nginx 服務(wù)器編譯優(yōu)化進(jìn)行詳細說(shuō)明：

1、 GCC 參數：

默認Nginx 使用的GCC 編譯參數是-O，需要更加優(yōu)化可以使用以下兩個(gè)參數

–with-cc-opt=’-O3′

–with-cpu-opt=opteron

使得編譯針對特定CPU 以及增加GCC 的優(yōu)化，針對優(yōu)化后的結果.我們進(jìn)行測試結果表明使用-O2 以及以上

的參數,可以微量增加性能 1%左右，而 O2 和O3 基本可以認為是相同的：

./http_load -parallel 100 -seconds 10 urls

10811 fetches, 100 max parallel, 5.23252e+06 bytes, in 10 seconds

a、默認參數 -O

1087.2 fetches/sec, 526204 bytes/sec

msecs/connect: 45.5374 mean, 63.984 max, 1.008 min

msecs/first-response: 45.7679 mean, 64.201 max, 2.216 min

1088.9 fetches/sec, 527027 bytes/sec

msecs/connect: 45.0159 mean, 65.291 max, 0.562 min

msecs/first-response: 46.1236 mean, 67.397 max, 9.169 min

1102.2 fetches/sec, 533465 bytes/sec

msecs/connect: 44.5593 mean, 67.649 max, 0.547 min

msecs/first-response: 45.499 mean, 67.849 max, 2.495 min

B、優(yōu)化編譯后 -O2

1081.1 fetches/sec, 523252 bytes/sec

msecs/connect: 45.7144 mean, 63.324 max, 0.823 min

msecs/first-response: 46.1008 mean, 61.814 max, 4.487 min

1110.2 fetches/sec, 537337 bytes/sec

msecs/connect: 43.4943 mean, 60.066 max, 0.715 min

msecs/first-response: 45.756 mean, 62.076 max, 3.536 min

1107 fetches/sec, 535788 bytes/sec

msecs/connect: 44.872 mean, 3036.51 max, 0.609 min

msecs/first-response: 44.8625 mean, 59.831 max, 3.178 min

C、優(yōu)化編譯后 -O3

1097.5 fetches/sec, 531189 bytes/sec

msecs/connect: 45.1355 mean, 3040.24 max, 0.583 min

msecs/first-response: 45.3036 mean, 68.371 max, 4.416 min

1111.6 fetches/sec, 538014 bytes/sec

msecs/connect: 44.2514 mean, 64.831 max, 0.662 min

msecs/first-response: 44.8366 mean, 69.904 max, 3.928 min

1099.4 fetches/sec, 532109 bytes/sec

msecs/connect: 44.7226 mean, 61.445 max, 0.596 min

msecs/first-response: 45.4883 mean, 287.113 max, 3.336 min

2、修改Nginx 的header 偽裝服務(wù)器

# cd Nginx-0.6.31

# vi src/core/Nginx.h

#ifndef _NGINX_H_INCLUDED_

#define _NGINX_H_INCLUDED_

#define NGINX_VERSION "7.2"

#define NGINX_VER "Freeke/" NGINX_VERSION

#define NGINX_VAR "NGINX"

#define NGX_OLDPID_EXT ".oldbin"

#endif /* _NGINX_H_INCLUDED_ */

# curl -I m.cheanjie.com

HTTP/1.1 200 OK

Server: Freeke/7.2

Date: Mon, 24 Nov 2008 02:42:51 GMT

Content-Type: text/html; charset=gbk

Transfer-Encoding: chunked

Connection: keep-alive

3、Tcmalloc 優(yōu)化Nginx 性能

從Nginx 0.6.29 添加 Feature: the ngx_google_perftools_module，那Nginx 也可以利用Tcmalloc 來(lái)提長(cháng)

性能。

[root@chinarenservice ~]# wget http://download.savannah.gnu.org/releases/libunwind/libunwind-0.99-alpha.tar.gz

[root@chinarenservice ~]# tar zxvf libunwind-0.99-alpha.tar.gz

[root@chinarenservice ~]# cd libunwind-0.99-alpha/

[root@chinarenservice ~]# CFLAGS=-fPIC ./configure

[root@chinarenservice ~]# make CFLAGS=-fPIC

[root@chinarenservice ~]# make CFLAGS=-fPIC install

[root@chinarenservice ~]# wget http://google-perftools.googlecode.com/files/google-perftools-0.98.tar.gz

[root@chinarenservice ~]# tar zxvf google-perftools-0.98.tar.gz

[root@chinarenservice ~]# cd google-perftools-0.98/

[root@chinarenservice ~]# ./configure

[root@chinarenservice ~]# make && make install

[root@chinarenservice ~]# echo "/usr/local/lib" > /etc/ld.so.conf.d/usr_local_lib.conf

[root@chinarenservice ~]# ldconfig

[root@ chinarenservice local]# lsof -n | grep tcmalloc

Nginx 7323 root mem REG 8,2 1412859 440730