Xdebug profiler, cachegrind ve qcachegrind ile PHP uygulamalarının performans profillerini çıkarıp görselleştirme

# Install qcachegrind
$ brew install qcachegrind

# Install graphviz
$ brew install graphviz

# Install xdebug
$ sudo apt-get install -y php-xdebug

# Enable xdebug profiler
$ sudo nano /etc/php/7.1/fpm/php.ini
xdebug.profiler_output_dir = /var/www/html/profiler-app/cachegrind
xdebug.profiler_enable = 1
xdebug.profiler_enable_trigger = 1

# Restart services
$ sudo service nginx restart
$ sudo service php7.1-fpm restart

# Create a dummy application folder
$ mkdir /var/www/html/profiler-app

# Create a dummy application file
$ nano /var/www/html/profiler-app/index.php
abstract class ParentClass
{
    protected function parentMethod()
    {
        return rand(10, 100);
    }
}

class ChildClass extends ParentClass
{
    private $number;

    public function __construct($number)
    {
        $this->number = $number;
    }

    public function getArg()
    {
        return $this->number;
    }

    public function getMultiplification()
    {
        return $this->number * parent::parentMethod();
    }
}

$childClass = new ChildClass(3);
echo $childClass->getArg();

for ($i = 0; $i < 3; $i++) {
    echo $childClass->getMultiplification();
}

# Create folder to keep cachegrind profiler files
$ mkdir /var/www/html/profiler-app/cachegrind

# Call application to generate cachegrind profiler files
$ curl localhost/profiler-app/?XDEBUG_PROFILE=1

# Check cachegrind profiler files
$ ls -l /var/www/html/profiler-app/cachegrind
-rw-r--r-- 1 501 dialout 486 Apr 10 14:08 cachegrind.out.13192

# See the content of the file
$ cat cachegrind/cachegrind.out.13192
version: 1
creator: xdebug 2.6.0 (PHP 7.1.13-1+ubuntu16.04.1+deb.sury.org+1)
cmd: /var/www/html/profiler-app/index.php
...
...