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目录情况：里面的php文件都在下面
root@192.168.136.128:~/software/xhprof-0.9.2# ls
CHANGELOG  CREDITS  examples  extension  LICENSE  README  xhprof_html  xhprof_lib
文件来源：把上面的文件都放在/data0/htdocs/tools.jackxiang.com/xhprof/下
Host：192.168.136.128  tools.jackxiang.com
htdocs：/data0/htdocs/tools.jackxiang.com
访问地址：
http://tools.jackxiang.com/xhprof/xhprof_html/index.php?run=528c8c8a00e2b&source=hx
程序编写：
<?php                                                                                                                   header("Content-type: text/html; charset=utf-8");                                                                       xhprof_enable();                                                                                                         //xhprof_enable(XHPROF_FLAGS_NO_BUILTINS); 不记录内置的函数                                                             //xhprof_enable(XHPROF_FLAGS_CPU + XHPROF_FLAGS_MEMORY);  同时分析CPU和Mem的开销                                         $xhprof_on = true;                                                                                                                                                                                                                                /*                                                                                                                       if (mt_rand(1, 10000) == 1) {                                                                                                  xhprof_enable();                                                                                                           $xhprof_on = true;                                                                                             }                                                                                                                       */                                                                                                                       echo "111";                                                                                                                                                                                                                                      if($xhprof_on){                                                                                                             $xhprof_data = xhprof_disable();                                                                                         $xhprof_root = '/data0/htdocs/tools.jackxiang.com/xhprof/';                                                               include_once $xhprof_root."xhprof_lib/utils/xhprof_lib.php";                                                             include_once $xhprof_root."xhprof_lib/utils/xhprof_runs.php";                                                           $xhprof_runs = new XHProfRuns_Default();                                                                                 $run_id = $xhprof_runs->save_run($xhprof_data, "hx");                                                                   echo '<a href="http://tools.jackxiang.com/xhprof/xhprof_html/index.php?run='.$run_id.'&source=hx" target="_blank">统> 计</a>';                                                                                                                 }                                                                                                                      
访问：http://tools.jackxiang.com/index.php



背景：以前用xdebug，现在听群里说有这么个玩意，是轻量级的，于是找了下，说是这xhprof比xdebug提示更明显，前面有一篇文章说过，我在此也再作下备注。
有人说自从xhprof出来之后分析PHP性能方便多了
以前都是自己写Trace工具，手工打点，记录 trace信息：
http://www.yiibase.com/php/view/180.html

作者：老王
调试PHP时，XDebug一直是大众的不二选择，搭配上Webgrind，可以获得不错的效果。今天看某人的栖息地里的介绍，才发现了XHProf，于是体验了一下，感觉很酷，与XDebug相比，运行更轻便，表现更易懂，下面记录一下体验过程。

安装XHProf：
wget http://pecl.php.net/get/xhprof-0.9.2.tgz
tar zxf xhprof-0.9.2.tgz
cd xhprof-0.9.2
cp -r xhprof_html xhprof_lib <directory_for_htdocs>
cd extension
phpize
./configure
make
make install

编辑php.ini：
[xhprof]
extension=xhprof.so
;
; directory used by default implementation of the iXHProfRuns
; interface (namely, the XHProfRuns_Default class) for storing
; XHProf runs.
;
xhprof.output_dir=<directory_for_storing_xhprof_runs>

重启服务让修改生效，现在就可以使用XHProf了，不过为了显示效果更炫，最好继续安装Graphviz。
安装Graphviz：
wget http://www.graphviz.org/pub/graphviz/stable/SOURCES/graphviz-2.24.0.tar.gz
tar zxf graphviz-2.24.0.tar.gz
cd graphviz-2.24.0
./configure
make
make install

安装完成后，会生成/usr/local/bin/dot文件，你应该确保路径在PATH环境变量里，以便XHProf能找到它。
使用XHProf：
// start profiling
xhprof_enable();

// run program
....

// stop profiler
$xhprof_data = xhprof_disable();

//
// Saving the XHProf run
// using the default implementation of iXHProfRuns.
//
include_once $XHPROF_ROOT . "/xhprof_lib/utils/xhprof_lib.php";
include_once $XHPROF_ROOT . "/xhprof_lib/utils/xhprof_runs.php";

$xhprof_runs = new XHProfRuns_Default();

// Save the run under a namespace "xhprof_foo".
//
// **NOTE**:
// By default save_run() will automatically generate a unique
// run id for you. [You can override that behavior by passing
// a run id (optional arg) to the save_run() method instead.]
//
$run_id = $xhprof_runs->save_run($xhprof_data, "xhprof_foo");

echo "---------------\n".
"Assuming you have set up the http based UI for \n".
"XHProf at some address, you can view run at \n".
"http://<xhprof-ui-address>/index.php?run=$run_id&source=xhprof_foo\n".
"---------------\n";

如此一来，会在上面设定的xhprof.output_dir目录里生成名字类似49bafaa3a3f66.xhprof_foo的数据文件，可以很方便的通过Web方式浏览效果：

http://<xhprof-ui-address>/index.php?run=49bafaa3a3f66&source=xhprof_foo

目前显示的是表格形式的显示，点击页面上的[View Full Callgraph]，就能看到精美的图片显示了。

补充：发现一个名为XLOG:http://tekrat.com/php/xlog/  的扩展，看上去不错，可以记录URL信息。和XDEBUG这样的扩展相比，XLOG更轻便，所以部署在生产服务器上不会对性能造成过大影响。

来源：http://hi.baidu.com/thinkinginlamp/item/6488cd3bc8e0f6be134b14cb

___________________________
简述:XHProf是一个分层PHP性能分析工具。它报告函数级别的请求次数和各种指标，包括阻塞时间，CPU时间和内存使用情况。一个函数的开 销，可细分成调用者和被调用者的开销，XHProf数据收集阶段，它记录调用次数的追踪和包容性的指标弧在动态callgraph的一个程序。它独有的数 据计算的报告/后处理阶段。在数据收集时，XHProfd通过检测循环来处理递归的函数调用，并通过给递归调用中每个深度的调用一个有用的命名来避开死循 环。XHProf分析报告有助于理解被执行的代码的结构，它有一个简单的HTML的用户界面（ PHP写成的）。基于浏览器的性能分析用户界面能更容易查看，或是与同行们分享成果。也能绘制调用关系图。

环境:CentOS 5.5 x64

安装:
cd /root/tools
wget http://pecl.php.net/get/xhprof-0.9.2.tgz
tar zxf xhprof-0.9.2.tgz
cd xhprof-0.9.2
cd extension
/elain/apps/php/bin/phpize
./configure --with-php-config=/elain/apps/php/bin/php-config
make && make install
cd ../../

#2.安装Graphviz
wget http://www.graphviz.org/pub/graphviz/stable/SOURCES/graphviz-2.28.0.tar.gz
这个能下载：http://www.graphviz.org/pub/graphviz/stable/SOURCES/graphviz-2.24.0.tar.gz
目前最新：http://www.graphviz.org/pub/graphviz/stable/SOURCES/graphviz-2.34.0.tar.gz
tar zxf graphviz-2.28.0.tar.gz
cd graphviz-2.28.0
./configure --prefix=/elain/apps/graphviz
make  && make install
cd ..
ln -s /elain/apps/graphviz/bin/* /bin/
安装完成后，会生成/usr/local/bin/dot文件，你应该确保路径在PATH环境变量里，以便XHProf能找到它。
文库：http://wenku.baidu.com/view/d2908ba9d1f34693daef3e84.html


#3.安装libpng
wget http://cdnetworks-kr-2.dl.sourceforge.net/project/libpng/libpng15/1.5.2/libpng-1.5.2.tar.gz
tar zxf libpng-1.5.2.tar.gz
cd libpng-1.5.2
./configure --prefix=/elain/apps/libpng
make && make install
cd ..

编辑php.ini
vi  /elain/apps/php/etc/php.ini

extension = "xhprof.so"

[xhprof]
xhprof.output_dir="/elain/logs/xhprof/log"

重启php即可
来自：http://elain.blog.51cto.com/3339379/632303

作者：jackxiang@向东博客 专注WEB应用 构架之美 --- 构架之美，在于尽态极妍 | 应用之美，在于药到病除
地址：http://jackxiang.com/post/6339/
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