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编译安装lamp-4（安装xcache，为php加速）-创新互联
***********安装xcache，为php加速*******************
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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