[文章作者:张宴 本文版本:v1.1 最后修改:2007.03.02 转载请注明出处:http://blog.zyan.cc]

  操作系统:Linux
  
  一、安装eaccelerator-0.9.5(同时支持ZendOptimizer-3.2.2)
  
  1、首先安装ZendOptimizer-3.2.2
  
  # wget http://www.vista.ac.cn/linux/down/ZendOptimizer/ZendOptimizer-3.2.2-linux-glibc21-i386.tar.gz
  # tar zxvf ZendOptimizer-3.2.2-linux-glibc21-i386.tar.gz
  # cd ZendOptimizer-3.2.2-linux-glibc21-i386
  # ./install.sh
  
  在Please specify the location for installing ZendOptimizer:提示后输入ZendOptimizer安装路径,例如/data/webserver/zend
  在Confirm the location of your php.ini file:提示后输入php.ini文件所在目录,例如/data/webserver/php/etc
  在Specify the full path to the Apache control utility (apachectl):提示输入apachectl绝对路径,例如/data/webserver/apache/bin/apachectl
  
  
  2、再安装eaccelerator-0.9.5加速软件
  
  # wget http://www.vista.ac.cn/linux/down/eaccelerator/eaccelerator-0.9.5.tar.bz2
  # tar jxvf eaccelerator-0.9.5.tar.bz2
  # cd eaccelerator-0.9.5
  
  指定php所在路径:
  # export PHP_PREFIX="/data/webserver/php"
  # $PHP_PREFIX/bin/phpize
  # ./configure --enable-eaccelerator=shared --with-php-config=$PHP_PREFIX/bin/php-config
  # make
  # make install
  
  这时会将eaccelerator安装到php目录中,屏幕会显示eaccelerator.so所在路径,例如:
  Installing shared extensions: /data/webserver/php/lib/php/extensions/no-debug-zts-20060613/
  记住这个路径。
  
  eaccelerator即可以安装为PHP扩展,也可以安装为zend扩展,以下安装为PHP扩展。
  
  如果存在/etc/php.d目录,需要拷贝eaccelerator.ini到该目录下,然后修改缺省值。如果不存在,修改php.ini,在[zend]之前加入以下内容(注:必须放在[zend]之前):
  
  [eaccelerator]
  extension="/data/webserver/php/lib/php/extensions/no-debug-zts-20060613/eaccelerator.so"
  eaccelerator.shm_size="32"
  eaccelerator.cache_dir="/data/cache/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"
  
  建立缓存目录:
  # mkdir -p /data/cache/eaccelerator
  # chmod 0777 /data/cache/eaccelerator
  
  重启Apache:
  # service httpd restart
  
  
  3、检查ZendOptimizer和eaccelerator是否安装成功
  
  创建一个phpinfo.php文件,内容如下:
  <?php
      phpinfo();
  ?>
  
  将该文件放置到网站目录,在浏览器中访问,如果出现以下内容则安装成功:
  This program makes use of the Zend Scripting Language Engine:
  Zend Engine v2.2.0, Copyright (c) 1998-2007 Zend Technologies
      with eAccelerator v0.9.5, Copyright (c) 2004-2006 eAccelerator, by eAccelerator
      with Zend Extension Manager v1.0.11, Copyright (c) 2003-2006, by Zend Technologies
      with Zend Optimizer v3.2.2, Copyright (c) 1998-2006, by Zend Technologies
  
  
  
  二、eaccelerator配置信息详解(根据官方英文说明翻译)
  
  extension="/data/webserver/php/lib/php/extensions/no-debug-zts-20060613/eaccelerator.so"
  
  解释:PHP扩展eaccelerator.so的路径。
  
  --------------------
  
  eaccelerator.shm_size="32"
  
  解释:eaccelerator可使用的共享内存大小(单位为MB)。
  
  在Linux下,单个进程的最大内存使用量受/proc/sys/kernel/shmmax中设置的数字限制(单位为字节),例如CentOS 4.4的shmmax默认值为33554432字节(33554432bytes/1024/1024=32MB)。
  
  临时更改该值:
  # echo 字节数 > /proc/sys/kernel/shmmax
  
  按照以上方法更改,在每次重启系统时,该值会被自动还原。如果想永久更改,可以修改/etc/sysctl.conf文件,设置:
  kernel.shmmax = 字节数
  
  --------------------
  
  eaccelerator.cache_dir="/data/cache/eaccelerator"
  
  解释:缓存路径,可以使用命令mkdir -p /data/cache/eaccelerator创建该目录,然后使用命令chmod 0777 /data/cache/eaccelerator设置该目录权限为0777
  
  --------------------
  
  eaccelerator.enable="1"
  
  解释:打开或者关闭eaccelerator。"1"指打开,"0"指关闭。默认值为"1"。
  
  --------------------
  
  eaccelerator.optimizer="1"
  
  解释:打开或者关闭代码优化,开启可以加快代码的执行速度。"1"指打开,"0"指关闭。默认值为"1"。
  
  --------------------
  
  eaccelerator.check_mtime="1"
  
  解释:当打开此项时,eaccelerator会在每次请求时检查php文件的修改时间,看其是否被修改过,这会耗费一点时间,如果php文件被修改过,eaccelerator会重新编译缓存该php文件。当关闭此项时,如果php文件被修改,则需要手工删除eaccelerator缓存,才能显示被修改的php文件。"1"指打开,"0"指关闭。默认值为"1"。
  
  --------------------
  
  eaccelerator.debug="0"
  
  解释:打开或者关闭调试记录。当打开时,eaccelerator会将对一个缓存文件的每次请求都写进log。打开此项只对调试eaccelerator是否有BUG时有益处。"1"指打开,"0"指关闭。默认值为"0"。
  
  --------------------
  
  eaccelerator.filter=""
  
  解释:决定哪些PHP文件应该被缓存。可以指定一个范围(比如"*.php *.phtml"),这样被指定的文件就会被缓存。如果该范围以!开头,被指定的文件就不会被缓存。默认值为"",表示缓存所有的PHP文件。
  
  --------------------
  
  eaccelerator.shm_max="0"
  
  解释:一个用户使用例如eaccelerator_put之类的函数能够往共享内存中加载的最大数据。默认值为"0",表示不限制。(单位为字节)
  
  --------------------
  
  eaccelerator.shm_ttl="0"
  
  解释:当没有足够的空闲共享内存去尝试缓冲一个新脚本时,将删除至少在shm_ttl秒之前没有被访问过的文件。默认值为"0",表示不尝试从共享内存中删除任何旧的脚本。(单位为秒)
  
  --------------------
  
  eaccelerator.shm_prune_period="0"
  
  解释:当没有足够的空闲共享内存去尝试缓冲一个新脚本时,将删所有旧脚本,前提是这个尝试在超过shm_prune_period秒之前被执行过。默认值为"0",表示不尝试从共享内存中删除任何旧的脚本。(单位为秒)
  
  --------------------
  
  eaccelerator.shm_only="0"
  
  解释:打开或者关闭在磁盘上缓存编译过的脚本。这个参数对会话数据和内容缓存没有效果。默认值为"0",表示使用磁盘和共享内存来缓存。
  
  --------------------
  
  eaccelerator.compress="1"
  
  解释:打开或者关闭缓存内容压缩。"1"指打开,"0"指关闭。默认值为"1"。
  
  --------------------
  
  eaccelerator.compress_level="9"
  
  解释:内存压缩的级别。默认值为"9",表示最大压缩。
  
  
  参考资料:
  1、Installing from source (http://www.eaccelerator.net/wiki/InstallFromSource)
  2、eAccelerator settings (http://www.eaccelerator.net/wiki/Settings)


Tags: ,
技术大类 » PHP/JS/Shell | 评论(25) | 引用(0) | 阅读(44587)
jackbillow
2007-9-2 10:42
如果使用/dev/shm做cache应该更能达到加上php的效果。
smile
Arbow
2008-12-10 10:52
你好,如果使用php扩展方式extension="/data/webserver/php/lib/php/extensions/no-debug-zts-20060613/eaccelerator.so"应该改为extension=eaccelerator.sozend扩展才是zend_extension="/data/webserver/php/lib/php/extensions/no-debug-zts-20060613/eaccelerator.so"因为我使用文章的方式,无法加载,只有改成 extension=eaccelerator.so 才可以。望赐教
wxy1681
2009-1-21 13:44
学习了!grinzan
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2011-11-11 15:59
博主有个问题请教一下:
我的小说网 www.xinhuashuwu.com 在参考了您的这篇博文后安装了eaccelerator.速度提升非常明显.
但对设置上有2个疑问.
1. eaccelerator.shm_size="32" 这个参数的最大值,在IIS+php下是不是受php.ini里面的memory_limit 数值限制?
    我的服务器上的memory_limit 设置的是128, 当我把eaccelerator.shm_size设置到256的时候,每次应用池回收后就会出现php错误. 如果把eaccelerator.shm_size设置到128则一切正常.
2. 当 eaccelerator.shm_ttl="0" eaccelerator.shm_prune_period="0" 使用默认0的时候,是不是缓存满了之后就无法再继续缓存新的内容?
    一定要这样设置才行吗?
   eaccelerator.shm_ttl="3600"
  eaccelerator.shm_prune_period="3600"
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Kelly Rowland, director de Misha, vient alors à sa rescousse, reprochant à Louis Walsh le manque de confiance de ses candidats à lui. Louis Walsh va alors (...)  Lire la apartment sur news-de-stars.com
La Source des Femmes :les actrices du movie transportent le théatre du Chatelet dans un autre monde
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