Incremental mystery metric computation

metric.cs

internal void UpdateRoundTripTimeAndVariance(int lastRoundtripTime)
{
	if (lastRoundtripTime < 0)
	{
		return;
	}
	this.roundTripTimeVariance -= this.roundTripTimeVariance / 4;
	if (lastRoundtripTime >= this.roundTripTime)
	{
		this.roundTripTime += (lastRoundtripTime - this.roundTripTime) / 8;
		this.roundTripTimeVariance += (lastRoundtripTime - this.roundTripTime) / 4;
	}
	else
	{
		this.roundTripTime += (lastRoundtripTime - this.roundTripTime) / 8;
		this.roundTripTimeVariance -= (lastRoundtripTime - this.roundTripTime) / 4;
	}
	if (this.roundTripTime < this.lowestRoundTripTime)
	{
		this.lowestRoundTripTime = this.roundTripTime;
	}
	if (this.roundTripTimeVariance <= this.highestRoundTripTimeVariance)
	{
		return;
	}
	this.highestRoundTripTimeVariance = this.roundTripTimeVariance;
}