Counters for low/high watermark state transititioning

[oberstet]

I am still unsure how to best approach.

E.g. on one hand, there is I think a fundamental tradeoff between throughput and latency. Maximizing throughput would be simply done by overwhelming the server with so many outstanding WS connections that there is always stuff to process - up to a hard limit of course (like accept queue depth).

This will result in best throughput, but probably bad latencies for individual WS connections.

Then, for a server that can process incoming connections so fast that the high watermark is never reached (when operating in modes other than --close keepopen), it might be hard to find out the best value for high watermark (that is just below hard limit) even if I am only interested in throughput.

At least for me, I could find out more / understand better, if we had the following 2 counters in wsperf:

• total number of transitions to high-watermark reached (pausing)
• total number of transitions to low-watermark reached (resuming)