Installing XHProf PHP Profiler on Ubuntu
Last updated:Update PEAR first of all:
$ sudo pear upgrade pear
Then use pecl to install the xhprof extension:
$ sudo pecl install -f xhprof
Add this to php.ini:
extension=xhprof.so
Restart Apache:
$ sudo /etc/init.d/apache2 restart
Done
now you can run an example by looking at this guide.