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Clicks: 12699 Date: 2014-06-13 16:12:18 Power By 李轩Lane


tar -zxvf xhprof-0.9.4.tgz
cd xhprof-0.9.4
cd extension
./configure --enable-xhprof
make test
sudo make install

sudo vim /etc/php.ini

sudo apache restart
进入刚才解压的安装包文件夹中,将xhprof_lib和xhprof_html复制到项目目录下。 接下来,建立一个头文件head.php,这是要打两个点中的开头的点:
    include_once 'xhprof_lib/utils/xhprof_lib.php';
    include_once 'xhprof_lib/utils/xhprof_runs.php';
    $ns = 'myXhprof';
    $xhprofData = xhprof_disable();
    $xhprofRuns = new XHProfRuns_Default();
    $runId = $xhprofRuns->save_run($xhprofData, $ns);
    $url = 'http://localhost/xhprof_html/index.php';
    $url .= '?run=%s&source=%s';
    $url = sprintf($url, $runId, $ns);
    echo '<a href="'.$url.'" target="_blank">查看结果</a>';
使用的最后一步:打点。现在我们建立一个测试文件index.php。测试我大Hello World。
include_once 'head.php';
echo 'Hello World';
include_once 'foot.php';
可以看到,在http://localhost/index.php中,最下面是我们在foot.php中写的“查看结果”,点击进去,可以看到本次请求所使用到的所有函数的列表,每个函数所耗费的时间、CPU、Memory等信息,点击第一栏可以根据所选排序。点击[View Full Callgraph]可以看到由本列表所生成的流程图,从入口到哪个函数,又到哪个函数,这个函数调用了哪个函数,这个函数调用了多少次Memcache等,一幕了然。减少MC的调用,减少这个,减少那个,请求的响应速度能不快吗? 技巧: 我有1000个文件,现在我需要用XHProf检测一下我整个项目,难道要每个文件头部和尾部都要加上include吗? 在php.ini中添加:
auto_prepend_file = /var/www/head.php
auto_append_file = /var/www/foot.php
php_value auto_prepend_file = /var/www/head.php
php_value auto_append_file = /var/www/foot.php
报错: 1、点击[View Full Callgraph]查看图片的时候报错:failed to execute cmd:" dot -Tpng". stderr:`sh: dot:command not found`。 原因:原因:未安装图形化工具 解决:
yum install graphviz
apt-get install graphviz
//OS X
brew install graphviz

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