Accumulating events instead of logging

[harendra-kumar]

• Logging events too often for a tiny time window may add much overhead.
• We can instead accumulate the events in memory using the profiling infra
• Control the event logging via SCC annotations - log periodically instead of every time

We can use event logging for micro-benchmarking as well.

[harendra-kumar]

For micro-benchmarking, we can have the user window message logged only after n iterations and log the number of iterations as well. Usually in a non-threaded program thread won't switch often therefore the thread eventlog won't be much.