Setting up xhprof on Moodle
From MoodleDocs
The following instructions are for setting up xhprof for Moodle under a Ubuntu/Debian environment. The process should be similar for other linux enviroments, but will need some tweaking if you wish to do this under windows. Please update this document if you find any major problems.
mkdir ~/src/
cd ~/src/
wget http://pecl.php.net/get/xhprof-0.9.2.tgz
tar xvf xhprof-0.9.2.tgz
cd xhprof-0.9.2/extension/
phpize
./configure
make
sudo make install
Add the following to the apache version of you php.ini file
[xhprof]
extension=xhprof.so
xhprof.output_dir="/var/tmp/xhprof"
