Xhprof Installation && Use

listen to colleagues talk about a PHP performance analysis extension, called Xhprof, recently learned the next.

The Xhprof is a lightweight, layered performance measurement analyzer. During the data collection phase, it tracks the number of calls and the measured data, and shows the arc diagram of the program's dynamic invocation. It calculates exclusive performance metrics during the reporting and post-processing stages, such as elapsed time, CPU compute time, and memory overhead. Function performance reports can be terminated by the caller and callee. During the data collection phase, the recursive function is detected by invoking the loop of the graph, which avoids the loop of recursive calls by assigning a unique depth name to the xhprof.

below to organize my installation and how to use

1. Compile and install 

wget http://pecl.php.net/get/xhprof-0.9.2.tgz tar zxf xhprof-0.9.2.tgzcd xhprof-0.9.2/extension/sudo phpize./ Configure--with-php-config=/usr/local/php/bin/php-configsudo Makesudo make install

2, configuration php.ini 
join in the 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>xhprof.output_dir=/tmp/xhprof

Note: If the 64-bit system needs to copy the xhprof.so file to the relevant lib64 directory

3, add the analysis code in the PHP code 

<?pho//CPU:XHPROF_FLAGS_CPU Memory: xhprof_flags_memory//If two together: Xhprof_flags_cpu + xhprof_flags_memory xhprof_enable (Xhprof_flags_cpu + xhprof_flags_memory);//PHP code to be tested $data = xhprof_disable ();   Return to run data//Xhprof_lib in the downloaded package, the directory exists, remember to include the directory in the running PHP code include_once "xhprof_lib/utils/xhprof_lib.php";  Include_once "xhprof_lib/utils/xhprof_runs.php";  $objXhprofRun = new Xhprofruns_default (); The first parameter, J, is the run information returned by the xhprof_disable () function//The second parameter is a custom namespace string (any string),//Returns the run ID, which is used to view the associated run result $run_id = $objXhprofRun Save_run ($data, "xhprof"); Var_dump ($run _id);

4. View running Results 

Copy the xhprof_lib&&xhprof_html related directory to the address that you can access xxx/xhprof_html/index.php?run= $run _id&source=bluefrog You can see how your PHP code is running. Here are some parameter descriptions inclusive                 time includes all execution times of the child functions. Exclusive time/self  time function to execute itself, not including subtree execution time. Wall                        time or wall clock time spent. CPU                        Time user elapsed + kernel time consumed inclusive CPU includes cpuexclusive CPU functions consumed by the                  function itself

Note: This extension requires the use of CType

Reference: http://www.lai18.com/content/323747.html

Xhprof Installation && Use