xhprof_quick_and_dirty.md

Install XHProf

Pear

sudo pear upgrade PEAR
sudo pecl install xhprof-0.9.2

From source

Need the patch to avoid https://bugs.php.net/bug.php?id=61674

wget http://pecl.php.net/get/xhprof-0.9.2.tgz
tar -xzf xhprof-0.9.2.tgz && cd xhprof-0.9.2
wget https://github.com/facebook/xhprof/commit/a6bae51236.diff
patch -p1 < a6bae51236.diff
cd extension

phpize
./configure
make

sudo cp modules/xhprof.so $(php-config --extension-dir)/
echo "extension=xhprof.so" | sudo tee -a /etc/php5/conf.d/20-xhprof.ini
# Create an xhprof virtualhost now
wget https://raw.github.com/msonnabaum/xhprof-single-file/master/index.php -O /your/virtualhost/docroot/xhprof.php
sudo /etc/init.d/apache2 reload
php -i | grep xhprof

wget https://raw.github.com/msonnabaum/xhprof-single-file/master/index.php -O /your/project/path/xhprof.php

Drupal

Add the following to Drupal's index.php:

<?php
xhprof_enable(XHPROF_FLAGS_CPU + XHPROF_FLAGS_MEMORY);
register_shutdown_function(function() {
  $xhprof_data = xhprof_disable();
  $namespace = 'sitename';
  $filename = '/tmp/' . uniqid() . '.' . $namespace . '.xhprof';
  file_put_contents($filename, serialize($xhprof_data));
});

Load the site, and you should now see some .xhprof files in /tmp. You can check the output using the script you installed at the xhprof virtualhost's index.php