Ruby Enterprise Edition

http://www.rubyenterpriseedition.com/download.html
/opt/ree/bin/gem update –system 1.5.2

delete all gems in ree:
/opt/ree/bin/gem list --no-version | xargs /opt/ree/bin/gem uninstall -aIx

/etc/environment:┬áPATH=”/opt/ree/bin ….”


sudo passenger-memory-stats
sudo passenger-status

http://www.linuxask.com/questions/how-to-tell-if-apache-2-is-using-prefork-or-worker-mpm
apache2 -V (verifica prefork sau itk)
apache2ctl -M (verifica modulele)