Red-line and adjustable load-intensity performance testing

[gkamat]

Is your feature request related to a problem? Please describe

OSB should have a capability to increase the intensity of a workload against a system-under-test to investigate how it performs under duress. When errors or issues are encountered, it should scale back the load to an appropriate level.

Related to this, as a preamble, there should be a simple way a user can specify the level of load, which would be mapped to an appropriate target throughput and/or number of clients. Similarly, the feedback mechanism should be configurable -- it could be error count, a step increase in latency or a sudden drop in throughput.

This feature is contingent upon OSB being able to scale well, and perhaps employ DWG to achieve this objective.