Graphical code tutorial on the installation and use of xhprof performance analysis tool under php7

Install xhprof

cd xhprof/extension/
phpize
./configure 
makemake install

Then add

extension=xhprof.so

execution

php -m | grep xhprof

to /etc/php.ini according to the situation and you can see Output, indicating that the php extension is installed successfully, and then restart Apache or php-fpm

Run

You can directly run the example in the example directory in the file cloned from github

The output is as follows

Array
(    [main()] => Array        (            [ct] => 1            [wt] => 9        ))
---------------Assuming you have set up the http based UI for 
XHProf at some address, you can view run at 
http://<xhprof-ui-address>/index.php?run=592567308784c&source=xhprof_foo
---------------

Then copy the ?run=592567308784c&source=xhprof_foo

Visit

xhprof_html/index.php?run=592567308784c&source=xhprof_foo

You can see the output

Click View Full Callgraph in the middle to see the performance analysis picture

Error reporting

failed to execute cmd：" dot -Tpng". stderr：sh： dot：command not found。

//解决方案yum install graphviz

Adapt to changes

For example, if you want to test your own project, such as a framework Performance analysis.

Copy the two files under xhprof_lib/utils/

xhprof_lib.php and xhprof_runs.php to the same directory as the entry file, and then add

// start profiling
xhprof_enable();

## at the beginning of the entry file #Add

// stop profiler
$xhprof_data = xhprof_disable();

// display raw xhprof data for the profiler run
print_r($xhprof_data);


include_once "xhprof_lib.php";
include_once "xhprof_runs.php";

// save raw data for this profiler run using default
// implementation of iXHProfRuns.
$xhprof_runs = new XHProfRuns_Default();

// save the run under a namespace "xhprof_foo"
$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";

to the end position to get the url shown above, and then visit

http://***/xhprof_html/index.php?run=*****&source=xhprof_foo

again to get the page shown below

View the picture

The red part in the picture is the part with lower performance and longer time consumption. We can check the system code according to which functions are marked in red. Optimize

Supplement

    Function Name：方法名称。

    Calls：方法被调用的次数。

    Calls%：方法调用次数在同级方法总数调用次数中所占的百分比。

    Incl.Wall Time(microsec)：方法执行花费的时间，包括子方法的执行时间。（单位：微秒）

    IWall%：方法执行花费的时间百分比。

    Excl. Wall Time(microsec)：方法本身执行花费的时间，不包括子方法的执行时间。（单位：微秒）

    EWall%：方法本身执行花费的时间百分比。

    Incl. CPU(microsecs)：方法执行花费的CPU时间，包括子方法的执行时间。（单位：微秒）

    ICpu%：方法执行花费的CPU时间百分比。

    Excl. CPU(microsec)：方法本身执行花费的CPU时间，不包括子方法的执行时间。（单位：微秒）

    ECPU%：方法本身执行花费的CPU时间百分比。

    Incl.MemUse(bytes)：方法执行占用的内存，包括子方法执行占用的内存。（单位：字节）

    IMemUse%：方法执行占用的内存百分比。

    Excl.MemUse(bytes)：方法本身执行占用的内存，不包括子方法执行占用的内存。（单位：字节）

    EMemUse%：方法本身执行占用的内存百分比。

    Incl.PeakMemUse(bytes)：Incl.MemUse峰值。（单位：字节）

    IPeakMemUse%：Incl.MemUse峰值百分比。

    Excl.PeakMemUse(bytes)：Excl.MemUse峰值。单位：（字节）

    EPeakMemUse%：Excl.MemUse峰值百分比。

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