編譯安裝lamp-4（安裝xcache，為php加速）

***********安裝xcache，為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，壓力測試：

ulimit -n 3000

ab -c 100 -n 2000 http://10.10.37.138/pma/index.php 十個并發，發兩千個請求

[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 服務器軟件版本

Server Hostname:        10.10.37.138 請求的服務器地址

Server Port:            80 服務器端口

Document Path:          /pma/index.php

Document Length:        7794 bytes URL的大小

Concurrency Level:      100 并發請求

Time taken for tests:   103.874 seconds 整個測試經過的時長

Complete requests:      2000 一共2000的請求

Failed requests:        0

Total transferred:      17925162 bytes 包含首部和數據

HTML transferred:       15588000 bytes 總共傳輸的數據

Requests per second:    19.25 [#/sec] (mean) 每秒鐘完成的請求數

Time per request:       5193.681 [ms] (mean) 每一批(100個)請求需要的時間

Time per request:       51.937 [ms] (mean, across all concurrent requests) 每一個請求消耗的時間

Transfer rate:          168.52 [Kbytes/sec] received 傳輸速率

Connection Times (ms) 連接時間

              min  mean[+/-sd] median   max

Connect:        0   11  58.9      0     497 連接建立

Processing:  2445 5139 1298.0   4850   17286 請求處理

Waiting:     2445 5111 1303.1   4820   17285 等待數據從磁盤加載完成并相應

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，下載xcache-3.1.2.tar.bz2 百度搜索即可

解壓解包并編譯安裝

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

/usr/local/php/bin/phpize 編譯第三方擴展是都需要執行

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

make && make install

安裝結束后會出現如下信息：

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，再做壓力測試：

http://10.10.37.138/pma/index.php 刷新幾次生成緩存

再執行測試

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)

安裝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)

適用于讀的多，寫的少的服務器類型