-*- mode: org -*- Nemesis is a prototype [[https://docs.python.org/3/library/asyncio.html][asyncio]] profiler which finds blocking coroutines through use of [[https://github.com/plasma-umass/coz][causal profiling]]. Nemesis directly measures optimization potential without instrumentation by predicting the impact of how coroutine optimization has an inpact on the overall throughput or latency of tasks scheduled in the event loop.