PHP 预编译加速： eAccelerator的安装和性能比较

上次尝试安装Wikipedia的镜像的时候，了解到了eAccelerator已经是很常用的PHP平台预编译加速的手段了。今天在自己机器上尝试安装了一下，备忘如下：

获得源代码：

http://bart.eaccelerator.net/source/

编译：需要有autoconf支持，解包后在源程序目录下：

/usr/local/bin/phpize

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

make

sudo make install

配置增加如下：sudo vi /usr/local/lib/php.ini

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

extension="/no-debug-non-zts-20060613/eaccelerator.so"

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.shm_prune_period="0"

eaccelerator.shm_only="0"

eaccelerator.compress="1"

eaccelerator.compress_level="9"

2006-06-03更新

在apache 2.2的升级过程中:发现php的相关模块都需要重新编译 需要注意包含哪个目录下的 eaccelerator.so 文件

/usr/local/lib/php/extensions$ ls -1

no-debug-non-zts-20020429

no-debug-zts-20020429

否则eAccelerator会无法生效, 我测试的结果在apache 2.2下eAccelerator的效果比apache 1.3下还差一些;

最好创建专用的缓存目录：

sudo mkdir /tmp/eaccelerator

sudo chmod 0777 /tmp/eaccelerator

重启一下apache：

sudo /home/apache/bin/apachectl restart

通过phpinfo()已经可以看到：eAccelerator启用了

[chedong@chedong eaccelerator-0.9.5.3]$ php -v

PHP 5.2.8 (cli) (built: Jan 14 2009 02:44:39)

Copyright (c) 1997-2008 The PHP Group

Zend Engine v2.2.0, Copyright (c) 1998-2008 Zend Technologies

with eAccelerator v0.9.5.3, Copyright (c) 2004-2006 eAccelerator, by eAccelerator

用phpinfo这个脚本本身还做了一下性能对比测试：对于纯php代码（不考虑数据库瓶颈/文件IO等操作）的运行效率的确有3-5倍的效率提升；

测试：

/home/apache/bin/ab -c 20 -n1000 http://www.chedong.com/phpMan.php/phpinfo
eAccelerator 启用 |eAccelerator 关闭

Document Length: 32006 bytes |Document Length: 29136 bytes

Concurrency Level: 20 |Concurrency Level: 20

Time taken for tests: 5.813 seconds |Time taken for tests: 23.896 seconds

Complete requests: 1000 |Complete requests: 1000

Failed requests: 89 |Failed requests: 109

(Connect: 0, Length: 89, Exceptions: 0) | (Connect: 0, Length: 109, Exceptions: 0)

Broken pipe errors: 0 |Broken pipe errors: 0

Total transferred: 32534962 bytes |Total transferred: 29578714 bytes

HTML transferred: 32263316 bytes |HTML transferred: 29308693 bytes

Requests per second: 172.03 [#/sec] (mean) |Requests per second: 41.85 [#/sec] (mean)

Time per request: 116.26 [ms] (mean) |Time per request: 477.92 [ms] (mean)

Time per request: 5.81 [ms] |Time per request: 23.90 [ms]

Transfer rate: 5596.93 [Kbytes/sec] received |Transfer rate: 1237.81 [Kbytes/sec] received

|

Connnection Times (ms) |Connnection Times (ms)

min mean[+/-sd] median max | min mean[+/-sd] median max

Connect: 0 19 12.1 17 72 |Connect: 0 91 58.9 89 424

Processing: 53 92 22.0 90 219 |Processing: 140 379 209.6 366 4078

Waiting: 39 89 21.9 88 218 |Waiting: 113 359 210.6 349 4076

Total: 53 111 16.4 109 251 |Total: 140 470 203.7 450 4321

|

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

50% 109 | 50% 450

66% 110 | 66% 453

75% 111 | 75% 456

80% 116 | 80% 460

90% 130 | 90% 490

95% 145 | 95% 626

98% 158 | 98% 830

99% 167 | 99% 831

100% 251 (last request) | 100% 4321 (last request)

2006-08-21

用yum安装autoconf时候出警告：

warning: rpmts_HdrFromFdno: Header V3 DSA signature: NOKEY, key ID db42a60e

Public key for autoconf-2.59-5.noarch.rpm is not installed

Retrieving GPG key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora

GPG key at file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora (0x4F2A6FD2) is already installed

The GPG keys listed for the "Fedora Core 4 - i386 - Base" repository are already installed but they are not correct for this package.

Check that the correct key URLs are configured for this repository.

按照Dan的回复：修复一下 rpm --import /usr/share/rhn/RPM-GPG-KEY 然后再安装就可以了。

2006-11-03 升级PHP后，eAccelerator需要重新编译，并且设置扩展的公共根路径：

; Directory in which the loadable extensions (modules) reside.

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

extension="/no-debug-non-zts-20060613/eaccelerator.so"

否则会出现错误：

PHP Warning: Unknown(): Unable to load dynamic library './/usr/local/lib/php/extensions/no-debug-non-zts-20020429/eaccelerator.so' - .//usr/local/lib/php/extensions/no-debug-non-zts-20020429/eaccelerator.so: cannot open shared object file: No such file or directory
in Unknown on line 0