PHP performance monitoring extension xhprof performance analysis tool

The PHP performance monitoring extension xhprof is generally a good tool. This section introduces the installation and usage process under Ubuntu.

Install xhprof:

wget http://pecl.php.net/get/xhprof-0.9.2.tgz

tar zxf xhprof-0.9.2.tgz
cd xhprof-0.9.2/extension/
sudo phpize
./configure --with-php-config=/usr/local/php/bin/php-config
sudo make
sudo make install

In order to view the debugging results graphically, you must also To install the tool graphviz, you can directly use apt-get to install it under ubuntu. The command is: sudo apt-get install graphviz. If it is another system, you may have to use some twists and turns. The command is as follows:

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

Next configure php.ini

Add in 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 it is a 64-bit system, you need to copy the xhprof.so file to the relevant lib directory (lib64)

After modification, restart apache and look at phpinfo. There should be information about xhprof.

Add the code to the php to be tested

<?php
// cpu:xhprof_flags_cpu Memory: xhprof_flags_memory
// If both together: xhprof_flags_cpu + xhprof_flags_memory
xhprof_enable(xhprof_flags_cpu + xhprof_ flags_memory);

//PHP code to be tested
$data + /utils/xhprof_runs.php";

$objxhprofrun = new xhprofruns_default();

// The first parameter j is the running information returned by the xhprof_disable() function
// The second parameter is the custom namespace character String (any string),
//Return the running id, use this id to view the relevant running results
$run_id = $objxhprofrun->save_run($data, "xhprof");
var_dump($run_id);


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Parameter description:

Inclusive time includes all execution time of sub-functions. exclusive time/self time The time it takes for the function to execute itself, excluding subtree execution time. wall time elapsed time or wall clock time. cpu time user time + kernel time inclusive cpu includes the cpu occupied by sub-functions together exclusive cpu The cpu occupied by the function itself