编译安装lamp-4（安装xcache，为php加速）

***********安装xcache，为php加速*******************

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unzip -o PHPMyAdmin-4.0.5-all-languages.zip 

mv PHPMyAdmin-4.0.5-all-languages /usr/local/apache/htdocs/pma

1，压力测试：

ulimit -n 3000

ab -c 100 -n 2000 http://10.10.37.138/pma/index.php 十个并发，发两千个请求

[root@localhost local]# ulimit -n 3000

[root@localhost local]# ab -c 100 -n 2000 http://10.10.37.138/pma/index.php

This is ApacheBench, Version 2.3 <$Revision: 1554214 $>

Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/

Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 10.10.37.138 (be patient)

Completed 200 requests

Completed 400 requests

Completed 600 requests

Completed 800 requests

Completed 1000 requests

Completed 1200 requests

Completed 1400 requests

Completed 1600 requests

Completed 1800 requests

Completed 2000 requests

Finished 2000 requests

Server Software:        Apache/2.4.9服务器软件版本

Server Hostname:        10.10.37.138请求的服务器地址

Server Port:            80 服务器端口

Document Path:          /pma/index.php

Document Length:        7794 bytes URL的大小

Concurrency Level:      100 并发请求

Time taken for tests:   103.874 seconds 整个测试经过的时长

Complete requests:      2000 一共2000的请求

Failed requests:        0

Total transferred:      17925162 bytes 包含首部和数据

HTML transferred:       15588000 bytes 总共传输的数据

Requests per second:    19.25 [#/sec] (mean) 每秒钟完成的请求数

Time per request:       5193.681 [ms] (mean) 每一批(100个)请求需要的时间

Time per request:       51.937 [ms] (mean, across all concurrent requests)每一个请求消耗的时间

Transfer rate:          168.52 [Kbytes/sec] received 传输速率

Connection Times (ms) 连接时间

              min  mean[+/-sd] median   max

Connect:        0   11  58.9      0     497 连接建立

Processing:  2445 5139 1298.0   4850   17286请求处理

Waiting:     2445 5111 1303.1   4820   17285等待数据从磁盘加载完成并相应

Total:       2445 5150 1301.4   4858   17286

Percentage of the requests served within a certain time (ms)

  50%   4858

  66%   5165

  75%   5410

  80%   5590

  90%   6274

  95%   7209

  98%   9036

  99%  11075

 100%  17286 (longest request)

sync

2，下载xcache-3.1.2.tar.bz2百度搜索即可

解压解包并编译安装

[root@localhost php]# man -M man/ phpize

/usr/local/php/bin/phpize 编译第三方扩展是都需要执行

./configure --enable-xcache --with-php-config=/usr/local/php/bin/php-config

make && make install

安装结束后会出现如下信息：

Installing shared extensions:    /usr/local/php/lib/php/extensions/no-debug-zts-20100525/

3，配置：

[root@localhost xcache-3.1.2]# mkdir /etc/php.d

[root@localhost xcache-3.1.2]# cp xcache.ini /etc/php.d/

[root@localhost xcache-3.1.2]# vi /etc/php.d/xcache.ini

extension = /usr/local/php/lib/php/extensions/no-debug-zts-20100525/

4，再做压力测试：

http://10.10.37.138/pma/index.php 刷新几次生成缓存

再执行测试

ab -c 100 -n 2000 http://10.10.37.138/pma/index.php

Requests per second:    80.13 [#/sec] (mean)

Time per request:       1248.033 [ms] (mean)

Time per request:       12.480 [ms] (mean, across all concurrent requests)

安装xcache之前的速度

Requests per second:    19.25 [#/sec] (mean)

Time per request:       5193.681 [ms] (mean)

Time per request:       51.937 [ms] (mean, across all concurrent requests)

速度上能×××倍多

Requests per second:    21.97 [#/sec] (mean)

Time per request:       4552.375 [ms] (mean)

Time per request:       45.524 [ms] (mean, across all concurrent requests)

适用于读的多，写的少的服务器类型

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