Philosophers - clusters in iteration execution time

[axel22]

Here are some warmup curves related to the philosophers benchmark:

We should potentially investigate reasons for this - which might be that the CameraThread is doing a different number of iterations depending on the timing.

[axel22]

cc @ceresek

[Theodor]

I wonder what amount of threads (==philosophers) are these graphs for?

[ceresek]

This was measured on Xeon E5-2620 v4 with hyperthreading turned off, so the JVM saw 8 processors, which is the default philosopher count for the benchmark.