These graphs show the average number of free nodes over various time periods. Nodes are broken down into three classes: The first class includes all "pc" node types, from the slowest to the fastest. The other classes show the most numerous and/or desirable node types, the pc3000s, d710s, d820s, and the d430s which have Gb (all) and 10Gb (d820, d430) Ethernet interfaces. For many experimenters, the number of free pc3000s, d710s and d430s limit the size of the experiments they can run. Emulab currently includes around 500 PC nodes.

Hourly graphs show the average number of free nodes in the given hour. Daily graphs show the average number of free nodes in the given day, etc. All times are given in Mountain Time. Note that because some data in these graphs is averaged over a very long time period (up to four years), it may not reflect recent trends.

Recent Availability

Last 2 Weeks (hourly)

Last 2 Months (daily)

Diurnal

A Typical Week (hourly, average since Sep 2005)

Long-Term Trends

Since Sep 2005 (yearly)

Since Sep 2005 (monthly)

Since Sep 2005 (weekly)

Note: The gap in the last two graphs represents periods when no data was availabe due to bugs in our system.