eAccelerator已經(jīng)是很常用的PHP平臺預(yù)編譯加速的手段了。今天在自己機器上嘗試安裝了一下，備忘如下：

獲得源代碼：
http://bart.eaccelerator.net/source/
編譯：需要有autoconf支持，解包后在源程序目錄下：

/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的升級過程中:發(fā)現(xiàn)php的相關(guān)模塊都需要重新編譯 需要注意包含哪個目錄下的 eaccelerator.so 文件
/usr/local/lib/php/extensions$ ls -1
no-debug-non-zts-20020429
no-debug-zts-20020429
否則eAccelerator會無法生效, 我測試的結(jié)果在apache 2.2下eAccelerator的效果比apache 1.3下還差一些;

最好創(chuàng)建專用的緩存目錄：

sudo mkdir /tmp/eaccelerator
sudo chmod 0777 /tmp/eaccelerator

重啟一下apache：
sudo /home/apache/bin/apachectl restart
通過phpinfo()已經(jīng)可以看到：eAccelerator啟用了
[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這個腳本本身還做了一下性能對比測試：對于純php代碼（不考慮數(shù)據(jù)庫瓶頸/文件IO等操作）的運行效率的確有3-5倍的效率提升；

測試：
/home/apache/bin/ab -c 20 -n1000 http://www.chedong.com/phpMan.php/phpinfo

eAccelerator 啟用                                             |eAccelerator 關(guān)閉
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   maxConnect:        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%    45066%    110                                                  |  66%    45375%    111                                                  |  75%    45680%    116                                                  |  80%    46090%    130                                                  |  90%    49095%    145                                                  |  95%    62698%    158                                                  |  98%    83099%    167                                                  |  99%    831100%    251 (last request)                                   | 100%   4321 (last request)

2006-08-21
用yum安裝autoconf時候出警告：

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的回復(fù)：修復(fù)一下 rpm --import /usr/share/rhn/RPM-GPG-KEY 然后再安裝就可以了。

2006-11-03 升級PHP后，eAccelerator需要重新編譯，并且設(shè)置擴展的公共根路徑：
; Directory in which the loadable extensions (modules) reside.
extension_dir = "/usr/local/lib/php/extensions"
extension="/no-debug-non-zts-20060613/eaccelerator.so"

否則會出現(xiàn)錯誤：

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

作者：車東 發(fā)表于：2006-05-25 15:05 最后更新于：2009-01-14 12:01
版權(quán)聲明：可以任意轉(zhuǎn)載，轉(zhuǎn)載時請務(wù)必以超鏈接形式標(biāo)明文章原始出處和作者信息及本版權(quán)聲明。
http://www.chedong.com/blog/archives/001154.html

?

總結(jié)

以上是生活随笔為你收集整理的PHP 预编译加速： eAccelerator的安装和性能比较的全部內(nèi)容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網(wǎng)站內(nèi)容還不錯，歡迎將生活随笔推薦給好友。