@Benchmark
    public final void bm(@SuppressWarnings("unused") BytesPerSecondCounter counter)
            throws Exception {
        benchmark.throughput();
    }
Use an AuxCounter so we can measure that bytes per second as they accumulate without
consuming CPU in the benchmark method.
benchmark-jmh/src/jmh/java/org/conscrypt/JmhClientSocketBenchmark.java