There are several open and closed source softwares in the market which can generate almost real time notifications for you. Most famous one being Nagios. In this blog post I will discuss, how to generate real time system notifications using PHP and XMPP. Specifically, I will present sample script using Jaxl (Jabber XMPP Client Library) for generating real time system load notifications, which can be received using any Instant Messengers.

The code for a class that uses and extends the Jaxl library is included. It sends the messages via Jabber after grabbing the contents of the "/proc/loadavg" file on the local system. You'll need to check out the latest Jaxl source and create a configuration file with your IM information, but that's about it. The rest is handled by the script - you can see an example here.