ln.perfdb/TimeWindow.cs

using System;
namespace ln.perfdb
{
    public class TimeWindow
    {
        public int NumRecords { get; private set; }
        public int Interval { get; private set; }

        public TimeWindow(int numRecords, int interval)
        {
            NumRecords = numRecords;
            Interval = interval;
        }
        public TimeWindow(TimeSpan timeSpan, int interval)
        {
            Interval = interval;
            TimeSpan = timeSpan;
        }

        public TimeSpan TimeSpan {
            get => TimeSpan.FromSeconds(NumRecords * Interval);
            private set => NumRecords = (int)(value.TotalSeconds / Interval);
        }

        public int GetValuePositionFromTimestamp(long timestamp) => ((int)(timestamp / Interval));
        public int GetValueIndexFromTimestamp(long timestamp) => ((int)(timestamp / Interval)) % NumRecords;

        public long ByteSize => NumRecords * 16;
    }
}