Monitor demo
A quick demo of the monitor display. This is live data for real servers (names have been changed to protect the innocent!).
Update - 01 November 2006
Added a javascript style-switcher and summary information (this month’s percentage availability and number of days uptime).
Notes
Measurements are taken at 5 minute intervals, represented here by one pixel - a total of 12 hours range on the graphs shown. Javascript keeps the graphs updated (reloading the latest data file every 5 minutes) as long as you stay on the page.
Initial view is server load average. Use the “LTMFSD” buttons or the style changer in your browser (eg. View -> Page Style) for other parameters: page load time, free memory, swap memory, MySQL connection and disk space.
The coloured display is indicative only, based on roughly a log scale, so that small variations are visible. For example on the load average display there is a visible difference between a load of 0 and 0.2, yet the full scale covers up to 100.
To view actual measurements click anywhere on the graph (you need to be quite precise).
Normally the monitor would be inserted into any page just by adding the stylesheet links in the head and a javascript tag in the body. In this case I’ve used an iframe to avoid permission problems in Firefox and other Mozilla-based browsers. (The javascript loads data files from another domain).