Metering

For each metered netlet (some may be unmetered at the node's discretion), a node maintains a set of resource counters:

• CPU (in milliseconds)
• Heap Memory (in byte-seconds)
• Java object allocations (count)

These counters are visible to the node, and may be re-exported through node facets to privileged netlets.

Notes:

• Counter-based events have been deliberately omitted from the node spec.
• The set of counters may change during the live-time of a netlet.