test run parameters:
Devices are simulated using headless browsers running on a cisco blade center. Each browser is run in a container with its own MAC address and DHCP-retrieved IP address. The containers are created and perform dhcp prior to the test. (This process is not included in the results.)
One headless browser is started every 2 seconds. After 100 browsers have been started, a delay of 10 seconds is inserted to provide a short amount of time for the system to recover from some of the load. (There is a balance here in simulating enough load in a short period of time to be useful, but not overloading the server with an entirely unrealistic situation.)
Each headless browser:
This load test run is right on the edge of failing. With a delay of 2 seconds between passenger device 'kick off', we see a 93% success rate. (If we drop that delay to 1 second, we see mass failure. If we increase the delay to 3 seconds we see 100% success.) Given that this is an un-optimized prototype system, and we have 600 passenger devices represented, we feel comfortable that the final integrated system should support the passenger loads expected on KAL.
* Values of -1 are an indication of an SNMP read error.