gistfile1.cs

public class WebBase : NancyModule
{
    private ExponentiallyDecayingSample _sample;

    public WebBase()
    {
        Setup();

        Get["/sampling"] = param =>
        {
            _sample.Clear();

            for (int i = 0; i < 100; i++)
            {
                _sample.Update(i);
            }

            var values = new List<long>(_sample.Values);
            values.Sort();

            return string.Join(",", values);
        };
    }

    private void Setup()
    {
        _sample = new ExponentiallyDecayingSample(1024, 0.15);
    }
}

This causes a problem in timers where only 3 values are ever in the sample even when there have been a lot of things timed.

Broker.Worker: {
BlobDelete: {
type: "timer",
duration: {
unit: "Milliseconds",
min: 20.037987,
max: 1225.699515,
mean: 73.35299645333333,
median: 51.318412,
p75: 478.825806,
p95: 478.825806,
p98: 478.825806,
p99: 478.825806,
p999: 478.825806,
values: "478.825806, 21.784853, 51.318412"
},
rate: {
unit: "Seconds",
count: 225,
mean: 0.5495942080080811,
m1: 0.4888301904187456,
m5: 0.5077636432513755,
m15: 0.45482446625868517
}
},