WEB performance analysis using xhprof (PHP) extension

: This article mainly introduces the use of xhprof (PHP) extension for WEB performance analysis. For more information about PHP tutorials, see. Recently, my work has been a little busy. I often work overtime and occasionally stay up all night. However, the popular Weibo "mixed Stream" was successfully launched in full. However, from the performance perspective, there is still a lot of room for improvement.

The following describes how to use xhprof to analyze WEB performance.

Install xhprof extension:

Official documentation is better than everything => http://php.net/xhprof

Note: If you want to use xhprof for plotting, you need to enable the function disabled by default.

1	;disable_functions = phpinfo,system,exec,shell_exec,passthru,proc_close,show_source

Deploy the xhprof runtime environment:

After the above configuration, xhprof will output a report file after you have run the project. However, the content of this file is a serialized array. Therefore, you need to build a WEB environment that can read the data file.

Here is a copy of xhprof environment code: http://pan.baidu.com/s/1bnLvmrl

Then, you can see the following report page by accessing the xhprof environment.

Xhprof file list (/xhprof_html/list. php)

Xhprof report in the form of icons (/xhprof_html/index. php)

• Function Name
• Number of Calls to Cils
• Incl. Wall Time: the execution Time of the function (including the Time when other internal functions are called)
• Excl. Wall Time: The Time when the function is executed (excluding the Time when other functions are called)

Xhprof report in flowcharts (/xhprof_html/callgraph. php)

Notes:

• The same method has been called multiple times (maybe caused by unnecessary loops)
• Whether the time consumption falls on the external interface (affects TPS-number of requests per second)
• Whether there is excessive memory consumption (which will affect the computing efficiency)

Source: Hu Xu personal blog => [original] WEB performance analysis using xhprof (PHP) extension

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The above introduces the use of xhprof (PHP) extension for WEB performance analysis, including the content, hope to be helpful to friends interested in PHP tutorials.