I've had some recent performance trouble with my LAMP servers. After some digging I found this answer:

https://www.digitalocean.com/community/questions/lamp-on-ubuntu-14-04-with-apache-event-mpm?answer=16934

This worked perfectly, improving performance considerably on my older LAMP servers built in January 2015 and earlier. But an error when attempting to install the required packages on more recent LAMP droplet ( Built March 10 2015, Apache 2.4.7 ).

I ran:

sudo apt-get install libapache2-mod-fastcgi php5-fpm apache2-mpm-event

and got :

Package libapache2-mod-fastcgi is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or is only available from another source

E: Package 'libapache2-mod-fastcgi' has no installation candidate

It would be great to get apache event mpm working on my newer droplets. Any help would be appreciated.