Web performance analysis with Xhprof (PHP) extensions

Recently work a little busy, often overtime, and occasionally will be overnight. But eventually the top Twitter " Mixed Stream"The whole volume went live smoothly. However, from a performance point of view, there is still a lot of room for improvement.

The following is an analysis of Web performance using Xhprof.

To install the xhprof extension:

Official documents outweigh everything. Http://php.net/xhprof

Note: If you want to take advantage of xhprof drawing, you need to turn the system default disable function on.

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

To deploy the XHPROF runtime environment:

With the above configuration, Xhprof will output a report file after you have run the project. However, the contents of this document are serialized arrays. Therefore, a web environment that can read the data file needs to be built.

Here is a code for the XHPROF environment: HTTP://PAN.BAIDU.COM/S/1BNLVMRL

After accessing the XHPROF environment, you will see the following reporting interface.

Xhprof file list (/xhprof_html/list.php)

Xhprof Report in icon form (/xhprof_html/index.php)

• Function Name method names
• Calls number of Calls
• Incl. Wall time the function execution times (contains the time of the internal other function calls)
• Excl. Wall time the function executes (does not contain the time of the internal other function calls)

Xhprof report in flowchart form (/xhprof_html/callgraph.php)

A few things to focus on:

• The same method has been called multiple times (perhaps the result of unnecessary loops)
• Whether the time spent falls on the external interface (which affects the number of requests per second tps–)
• Whether there is too much memory consumption (which can affect computational efficiency)

Article Source: Hu Xu Personal blog = "Original" Web performance analysis with Xhprof (PHP) extensions

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The above describes the use of xhprof (PHP) extension for Web performance analysis, including aspects of the content, I hope that the PHP tutorial interested in a friend helpful.

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