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magento的性能,我在这上面不知道花了多少时间.已经试过了eaccelerator,非常不错.也来试试APC.因为据说它比较稳定.不管什么说要试试看,只要有利于提高速度的.

 

说明:APC,全称是Alternative PHP Cache (APC),是一个开源的PHP缓存扩展模块.它的目的是为PHP编译字节码的缓存和代码优化提供一个免费开源而又稳定的框架.

 

安装apc

 

前提:

没有要求或依赖于其它的任意模块

 

安装步骤

安装APC 有很多方法，不过推荐使用pecl．它和pear一样，非常好用，甚至好些选项，命令都是一样的．

 

#cd /usr/local/php/bin

# ./pecl install apc

 

如果有碰到问题请参考:ear.php.net is using a unsupported protocal

[root@LSN-D3092 bin]# ./pecl install apc pecl.php.net is using a unsupported protocal - This should never happen.

 

# cd /usr/local/php/lib/php/.channels

#rm pear.php.net.reg

# rm pecl.php.net.reg

#cd /usr/local/php/bin

# ./pecl updae-channels

Updating channel "doc.php.net"
Channel "doc.php.net" is up to date
Updating channel "pear.php.net"
Update of Channel "pear.php.net" succeeded
Updating channel "pecl.php.net"
Channel "pecl.php.net" is up to date

 

# ./pecl install apc

 

Sorry, I was not able to successfully run APXS.  Possible reasons:

1.  Perl is not installed;
2.  Apache was not compiled with DSO support (--enable-module=so);
3.  'apxs' is not in your path.  Try to use --with-apxs=/path/to/apxs
The output of apxs follows
/tmp/pear/temp/APC/configure: line 3439: apxs: command not found
configure: error: Aborting
ERROR: `/tmp/pear/temp/APC/configure --with-apxs' failed

 

我是安装了perl,而且在编译安装apache时也必然启用了 --enable-so,所以判断是第三种情况,编译程序找不到apxs,在当前的查找路径找不到,解决方法,简单的你可以在bin目录给apxs创建一个软件链接,如

ln -s /usr/local/apache2/bin/apxs /bin/apxs

 

不过再次运行命令安装时我发现可以直接在它停下来询问时指定apxs的路径:

 

[root@LSN-D3092 bin]# ./pecl install apc
downloading APC-3.0.19.tar ...
Starting to download APC-3.0.19.tar (Unknown size)
.....................done: 564,736 bytes
47 source files, building
WARNING: php_bin /usr/local/php/bin/php appears to have a suffix /bin/php, but config variable php_suffix does not match
running: phpize
Configuring for:
PHP Api Version:         20041225
Zend Module Api No:      20060613
Zend Extension Api No:   220060519
Use apxs to set compile flags (if using APC with Apache)? [yes] :n(注意我用n)

...........

The output of /var/tmp/pear-build-root/APC-3.0.19/n follows
/tmp/pear/temp/APC/configure: line 3439: /var/tmp/pear-build-root/APC-3.0.19/n: No such file or directory
configure: error: Aborting
ERROR: `/tmp/pear/temp/APC/configure --with-apxs=n' failed (这行错误提示说明我们可以直接指定)

 

所以再来一次:

 

[root@LSN-D3092 bin]# ./pecl install apc
downloading APC-3.0.19.tar ...
Starting to download APC-3.0.19.tar (Unknown size)
.....................done: 564,736 bytes
47 source files, building
WARNING: php_bin /usr/local/php/bin/php appears to have a suffix /bin/php, but config variable php_suffix does not match
running: phpize
Configuring for:
PHP Api Version:         20041225
Zend Module Api No:      20060613
Zend Extension Api No:   220060519
Use apxs to set compile flags (if using APC with Apache)? [yes] :/usr/local/apache2/bin/apxs

 

(cd .libs && rm -f apc.la && ln -s ../apc.la apc.la) /bin/sh /var/tmp/pear-build-root/APC-3.0.19/libtool --mode=install cp ./apc.la /var/tmp/pear-build-root/APC-3.0.19/modules cp ./.libs/apc.so /var/tmp/pear-build-root/APC-3.0.19/modules/apc.so cp ./.libs/apc.lai /var/tmp/pear-build-root/APC-3.0.19/modules/apc.la PATH="$PATH:/sbin" ldconfig -n /var/tmp/pear-build-root/APC-3.0.19/modules ---------------------------------------------------------------------- Libraries have been installed in: /var/tmp/pear-build-root/APC-3.0.19/modules If you ever happen to want to link against installed libraries in a given directory, LIBDIR, you must either use libtool, and specify the full pathname of the library, or use the `-LLIBDIR' flag during linking and do at least one of the following: - add LIBDIR to the `LD_LIBRARY_PATH' environment variable during execution - add LIBDIR to the `LD_RUN_PATH' environment variable during linking - use the `-Wl,--rpath -Wl,LIBDIR' linker flag - have your system administrator add LIBDIR to `/etc/ld.so.conf' See any operating system documentation about shared libraries for more information, such as the ld(1) and ld.so(8) manual pages. ---------------------------------------------------------------------- Build complete. Don't forget to run 'make test'. running: make INSTALL_ROOT="/var/tmp/pear-build-root/install-APC-3.0.19" install Installing shared extensions: /var/tmp/pear-build-root/install-APC-3.0.19/usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/ running: find "/var/tmp/pear-build-root/install-APC-3.0.19" | xargs ls -dils 64192518 4 drwxr-xr-x 3 root root 4096 Sep 21 12:57 /var/tmp/pear-build-root/install-APC-3.0.19 64192577 4 drwxr-xr-x 3 root root 4096 Sep 21 12:57 /var/tmp/pear-build-root/install-APC-3.0.19/usr 64192578 4 drwxr-xr-x 3 root root 4096 Sep 21 12:57 /var/tmp/pear-build-root/install-APC-3.0.19/usr/local 64192579 4 drwxr-xr-x 3 root root 4096 Sep 21 12:57 /var/tmp/pear-build-root/install-APC-3.0.19/usr/local/php 64192580 4 drwxr-xr-x 3 root root 4096 Sep 21 12:57 /var/tmp/pear-build-root/install-APC-3.0.19/usr/local/php/lib 64192581 4 drwxr-xr-x 3 root root 4096 Sep 21 12:57 /var/tmp/pear-build-root/install-APC-3.0.19/usr/local/php/lib/php 64192582 4 drwxr-xr-x 3 root root 4096 Sep 21 12:57 /var/tmp/pear-build-root/install-APC-3.0.19/usr/local/php/lib/php/extensions 64192583 4 drwxr-xr-x 2 root root 4096 Sep 21 12:57 /var/tmp/pear-build-root/install-APC-3.0.19/usr/local/php/lib/php/extensions/no-debug-non-zts-20060613 64192576 468 -rwxr-xr-x 1 root root 472613 Sep 21 12:57 /var/tmp/pear-build-root/install-APC-3.0.19/usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/apc.so Build process completed successfully Installing '/usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/apc.so' install ok: channel://pecl.php.net/APC-3.0.19 configuration option "php_ini" is not set to php.ini location You should add "extension=apc.so" to php.ini

 

这样apc就被编译成一个so扩展,不过你需要修改php配置文件来加载,同时要设置相应的参数.首先呢,把这行加过去,

extension=apc.so

 

然后你可以在 php.ini中添加一个APC section

[APC] //这个名称可以随意的

apc.enabled = "1"

apc.shm_size=256
apc.num_files_hint=10000
apc.user_entries_hint=10000
apc.max_file_size=5M

 

再进一步, 在magento的app/etc/local.xml中添加如下配置(欢迎转载,请注明来源:blog.csdn.net/xinhaozheng )