Physics 05

This workload explores the scaling of the number of physics objects and collisions in a scene and their affect on platform metrics including CPU and network utilization.

The scene is a blank flat square region with 25 object generators suspended over a large square room. The objects generated are scripted to live for a specified period of time and then die as new objects are being created. After some time, this creates a steady state number of physical objects at any given time.

The TestClient performs these actions:

• Connects a single avatar
• Sleeps 60 seconds
• Shouts start 10 12.5 (The group of object generators begin dropping an average of 2 cubes per second for a steady state of 250 objects.)
• Sleeps 125 seconds while object count reaches a steady state
• Sleeps 300 seconds for additional data collection
• Shouts stop to stop the flow of objects

The 2.5x increase from 100 objects in Physics02 to 250 objects in this case has about a 5x increase on CPU utilization. The network TX bandwidth is only about 2x.

• ~110% CPU utilization
• ~20KB/s TX bandwidth