几种php加速器比较？

一、PHP加速器介绍 PHP加速器是一个为了提高PHP执行效率，从而缓存起PHP的操作码，这样PHP后面执行就不用解析转换了，可以直接调用PHP操作码，这样速度上就提高了不少。 Apache中使用mod_php的请求、响应执行流程： 1、Apache接收请求。 2、Apache传递请求给

一、PHP加速器介绍

PHP加速器是一个为了提高PHP执行效率，从而缓存起PHP的操作码，这样PHP后面执行就不用解析转换了，可以直接调用PHP操作码，这样速度上就提高了不少。

Apache中使用mod_php的请求、响应执行流程：

　　1、Apache接收请求。

　　2、Apache传递请求给mod_php。

　　3、mod_php定位磁盘文件，并加载到内存中。

　　4、mod_php编译源代码成为opcode树。

　　5、mod_php执行opcode树。

PHP加速器相应的就是第四步，它的目的就是防止PHP每次请求都重复编译PHP代码，因为在高访问量的网站上，大量的编译往往没有执行速度快呢？所以这 里面有个瓶颈就是PHP的重复编译既影响了速度又加载了服务器负载，为了解决此问题，PHP加速器就这样诞生了。

二、PHP加速器安装与配置

1、安装配置APC

APC全称是Alternative PHP Cache,官方翻译叫”可选PHP缓存”,它是PHP PECL中的一个扩展，好像是facebook在使用它，下面开始安装（ubuntu环境）：

$wget http://pecl.php.net/get/APC-3.0.19.tgz

$tar xvzf APC-3.0.19.tgz

$cd APC-3.0.19/APC-3.0.19

$/usr/local/php/bin/phpize

$./configure –enable-apc –enable-apc-mmap –with-php-config=/usr/local/php/bin/php-config

$make

$sudo make install

下面我们再配置APC,因为我的PECL扩展路径改变了，所以我得移动下编译好的文件：

$sudo mv /usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/apc.so /usr/local/php/lib/php/extensions/PECL

然后我们再编辑php.ini文件进行配置，请把下面的代码加入到php.ini中即可：

extension_dir = "/usr/local/php/lib/php/extensions/PECL"

extension = apc.so

; APC

apc.enabled = 1

apc.shm_segments = 1

apc.shm_size = 64

apc.optimization = 1

apc.num_files_hint = 0

apc.ttl = 0

apc.gc_ttl = 3600

apc.cache_by_default = on

这样重启apache就会在phpinfo()信息中显示。

2、安装配置eAccelerator

eAccelerator的前身其实是truck-mmcache，因为开发truk-mmcache的人被Zend给招安了，所以开发 eAccelerator的人继承了truk-mmcache的一些特性，设计出eAccelerator加速器。安装如下：

$wget http://jaist.dl.sourceforge.net/sourceforge/eaccelerator/eaccelerator-0.9.5.tar.bz2

$tar -jxf eaccelerator-0.9.5.tar.bz2

$cd eaccelerator-0.9.5

$/usr/local/php/bin/phpize

$./configure –enable-eaccelerator=shared –with-php-config=/usr/local/php/bin/php-config

$make

$sudo make install

$sudo mv /usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/eaccelerator.so /usr/local/php/lib/php/extensions/PECL

将下面代码加入php.ini文件中

extension = eaccelerator.so

; eAccelerator

eaccelerator.shm_size = "16"

eaccelerator.cache_dir = "/tmp/eaccelerator"

eaccelerator.enable = "1"

eaccelerator.optimizer = "1"

eaccelerator.check_mtime = "1"

eaccelerator.debug = "0"

eaccelerator.filter = ""

eaccelerator.shm_max = "0"

eaccelerator.shm_ttl = "0"

eaccelerator.prune_period = "0"

eaccelerator.shm_only = "0"

eaccelerator.compress = "1"

eaccelerator.compress_level = "9"

创建缓存目录,重启apache

$sudo mkdir /tmp/eaccelerator

$sudo chmod 777 /tmp/eaccelerator

$sudo /usr/local/apache/apachectl restart

在phpinfo()检查是否安装成功.

3、安装配置XCache

XCache作为国人自己开发的东西，做小菜鸟的我也感到骄傲，而且XCache无论在速度还是性能上都做的不错。下面就赶紧让我们品尝它吧！

$wget http://xcache.lighttpd.net/pub/Releases/1.2.2/xcache-1.2.2.tar.gz

$tar xvzf xcache-1.2.2.tar.gz

$cd xcache-1.2.2

$/usr/local/php/bin/phpize

$./configure –enable-xcache –enable-xcache-coverager –with-php-config=/usr/local/php/php-config

$make

$sudo make install

$sudo mv /usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/xcache.so /usr/local/php/lib/php/extensions/PECL

在php.ini添加配置信息：

extension = xcache.so

; xcache

xcache.admin.user = "admin"

xcache.admin.pass = "(执行) echo ’(你的密码)’|md5sum(得出的密文)"

;

xcache.size = 24M

xcache.shm_scheme = "mmap"

xcache.count = 2

xcache.slots = 8k

xcache.ttl = 0

xcache.gc_interval = 0

xcache.var_size = 8M

xcache.var_count = 1

xcache.var_slots = 8k

xcache.var_ttl = 0

xcache.var_maxttl = 0

xcache.var_gc_interval = 300

xcache.test = Off

xcache.readonly_protection = On

xcache.mmap_path = "/tmp/xcache"

xcache.coredump_directory = ""

xcache.cacher = On

xcache.stat = On

xcache.optimizer = Off

;

xcache.coverager = On

xcache.coveragedump_directory = ""

创建缓存目录，重启apache

$sudo mkdir /tmp/xcache

$sudo chmod 777 /tmp/xcache

$sudo /usr/local/apache/bin/apachectl restart

去查看phpinfo()信息吧！

三、PHP加速器测试

1、测试环境

硬件: AMD Athlon 64 X2 Dual Core Processor 4400+ @ 2.2GHz CPU, 2GB 内存. 160GB SATA 硬盘

软件: Linux Ubuntu server Gutsy 7.10, Apache 2.2.4, MySQL 5.0.45 和 PHP 5.2.3

测试指令: ab -c5 -n3000 http://example.com/ (我们使用的是Apache Benchmark (ab) 工具，并发连接为5，3000次请求)

2、测试结果

无任何加速器:

Document Path: /

Document Length: 21757 bytes

Concurrency Level: 5

Time taken for tests: 288.255212 seconds

Complete requests: 3000

Failed requests: 0

Write errors: 0

Total transferred: 66777000 bytes

HTML transferred: 65271000 bytes

Requests per second: 10.41 [#/sec] (mean)

Time per request: 480.425 [ms] (mean)

Time per request: 96.085 [ms] (mean, across all concurrent requests)

Transfer rate: 226.23 [Kbytes/sec] received

Connection Times (ms)

min mean[+/-sd] median max

Connect: 0 0 0.5 0 19

Processing: 181 479 186.0 444 1822

Waiting: 166 461 184.7 427 1708

Total: 181 479 186.0 444 1822

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

50% 444

66% 525

75% 577

80% 619

90% 732

95% 819

98% 946

99% 1012

100% 1822 (longest request)

APC加速器:

Document Path: /

Document Length: 21757 bytes

Concurrency Level: 5

Time taken for tests: 98.530068 seconds

Complete requests: 3000

Failed requests: 0

Write errors: 0

Total transferred: 66777000 bytes

HTML transferred: 65271000 bytes

Requests per second: 30.45 [#/sec] (mean)

Time per request: 164.217 [ms] (mean)

Time per request: 32.843 [ms] (mean, across all concurrent requests)

Transfer rate: 661.84 [Kbytes/sec] received

Connection Times (ms)

min mean[+/-sd] median max

Connect: 0 0 0.0 0 2

Processing: 58 163 71.2 155 2452

Waiting: 53 158 69.6 150 2329

Total: 58 163 71.2 155 2452

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

50% 155

66% 178

75% 193

80% 204

90% 235

95% 258

98% 285

99% 302

100% 2452 (longest request)

eAccelerator加速器:

Document Path: /

Document Length: 21757 bytes

Concurrency Level: 5

Time taken for tests: 95.983986 seconds

Complete requests: 3000

Failed requests: 0

Write errors: 0

Total transferred: 66777000 bytes

HTML transferred: 65271000 bytes

Requests per second: 31.26 [#/sec] (mean)

Time per request: 159.973 [ms] (mean)

Time per request: 31.995 [ms] (mean, across all concurrent requests)

Transfer rate: 679.39 [Kbytes/sec] received

Connection Times (ms)

min mean[+/-sd] median max

Connect: 0 0 0.1 0 3

Processing: 57 159 91.3 148 3830

Waiting: 50 152 89.8 142 3704

Total: 57 159 91.3 148 3830

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

50% 148

66% 174

75% 193

80% 205

90% 239

95% 263

98% 289

99% 309

100% 3830 (longest request)

XCache加速器:

Document Path: /

Document Length: 21757 bytes

Concurrency Level: 5

Time taken for tests: 99.76300 seconds

Complete requests: 3000

Failed requests: 0

Write errors: 0

Total transferred: 66777000 bytes

HTML transferred: 65271000 bytes

Requests per second: 30.28 [#/sec] (mean)

Time per request: 165.127 [ms] (mean)

Time per request: 33.025 [ms] (mean, across all concurrent requests)

Transfer rate: 658.19 [Kbytes/sec] received

Connection Times (ms)

min mean[+/-sd] median max

Connect: 0 0 0.0 0 2

Processing: 59 164 83.4 155 3367

Waiting: 52 156 66.4 148 1802

Total: 59 164 83.4 155 3367

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

50% 155

66% 178

75% 196

80% 206

90% 237

95% 263

98% 287

99% 305

100% 3367 (longest request)

3、结果摘要

四、PHP加速器比较结果总结

1、通过测试得出eAccelerator在请求时间和内存占用综合方面是最好的。

2、通过测试得出使用加速器比无加速器在请求时间快了3倍左右。

3、通过各个官方观察，XCache是更新最快的，这也说明最有发展的。