Performance Profiling PHP (Joomla) for svw.info

Install

https://xdebug.org/docs/install

apt-get install php-xdebug

root@asterix:~# php -v
PHP 8.3.6 (cli) (built: Sep 30 2024 15:17:17) (NTS)
Copyright (c) The PHP Group
Zend Engine v4.3.6, Copyright (c) Zend Technologies
    with Zend OPcache v8.3.6, Copyright (c), by Zend Technologies
    with Xdebug v3.2.0, Copyright (c) 2002-2022, by Derick Rethans

vi /etc/php/8.3/fpm/php.ini 
#add the following line, after:
;zend_extension=opcache
zend_extension=xdebug

systemctl restart php8.3-fpm.service

Profiling

vi /etc/php/8.3/fpm/conf.d/20-xdebug.ini
# add:
xdebug.mode=profile
xdebug.output_dir=/tmp/xdebug

chmod -R 777 /tmp/xdebug

systemctl restart php8.3-fpm.service 

vi /etc/php/8.3/fpm/conf.d/20-xdebug.ini
# remove:
#xdebug.mode=profile
#xdebug.output_dir=/tmp/xdebug

systemctl restart php8.3-fpm.service 

ll /tmp/xdebug
total 275420
drwxrwxrwx  2 root     root         4096 Jan 12 15:17 ./
drwxrwxrwt 15 root     root         4096 Jan 12 15:19 ../
-rw-r--r--  1 www-data www-data  2912391 Jan 12 15:18 cachegrind.out.1281205
-rw-r--r--  1 www-data www-data  4894855 Jan 12 15:18 cachegrind.out.1281206
-rw-r--r--  1 www-data www-data 82735239 Jan 12 15:18 cachegrind.out.1281211
-rw-r--r--  1 www-data www-data 78794887 Jan 12 15:18 cachegrind.out.1281212
-rw-r--r--  1 www-data www-data 74428551 Jan 12 15:18 cachegrind.out.1281213
-rw-r--r--  1 www-data www-data 38211719 Jan 12 15:18 cachegrind.out.1281214
-rwxrwxrwx  1 root     root           27 Jan 12 15:07 test.php*

Analyzing

apt-get install kcachegrind
kcachegrind cachegrind.out.1281212 &