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Profiling Drupal in Snow Leopard with Acquia Drupal and xhprof

Submitted by erikwebb on

UPDATE: The latest version of the devel module includes xhprof support. No separate module is needed anymore.

xhprof is a great utility for profiling and now apparently the only method of profiling memory usage as Xdebug has recently removed this requisite feature (as of 2.0.0RC4). Here are the steps I used to allow xhprof to run seamlessly on my 64-bit Snow Leopard machine.

  1. Add the Acquia Drupal executables to your PATH variable, then open a new terminal. Here is the PATH variable in my .bash_profile file -
PATH=/Applications/acquia-drupal/mysql/bin:/Applications/acquia-drupal/php/bin:/Applications/acquia-drupal/apache/bin:$PATH

  1. Install Git. The easiest way to install git on your Mac is using the git-osx-installer project on Google Code.

  2. Download the latest xhprof release from PECL -

pecl d xhprof-0.9.2
  1. Extract the xhprof PECL package -
tar xzf xhprof-0.9.2.tgz
  1. Compile the xhprof package. Here's the trick: because Snow Leopard is 64-bit, you must add the correct architecture flags to the compilation process -
cd xhprof-0.9.2/extension
phpize
CFLAGS='-arch i386 -isysroot /Developer/SDKs/MacOSX10.5.sdk -mmacosx-version-min=10.5' \
./configure --with-php-config=/Applications/acquia-drupal/php/bin/php-config
make
sudo make install
  1. Now add the newly created xhprof extension to your php.ini file using this configuration -
[xhprof]
extension=xhprof.so
;
; directory used by default implementation of the iXHProfRuns
; interface (namely, the XHProfRuns_Default class) for storing
; XHProf runs.
;
xhprof.output_dir=/private/tmp
  1. Restart Apache and double-check that the xhprof extension is properly loading -
apachectl restart
php -m | grep xhprof
  1. Download the xhprof module for Drupal from github -
cd sites/all/modules
/usr/local/git/bin/git clone http://github.com/pifantastic/drupal-xhprof.git
  1. Enable the xhprof module using drush -
drush en xhprof
  1. Configure the xhprof module's variables within your Drupal installation. I use the XHPROF_ENABLED query flag to denote when to profile -
drush variable-set xhprof_include_paths "*?XHPROF_ENABLED" -y

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