/// <summary>
/// Gets the counters for the specified core and time period.
/// </summary>
/// <param name="core">The core number.</param>
/// <param name="from">The start time.</param>
/// <param name="to">The end time.</param>
/// <returns>The counters for that period.</returns>
protected virtual EventHwCounters GetCounters(int core, DateTime from, DateTime to)
{
// Get corresponding hardware counters
var hardware = this.Counters
.Where(c => c.Time >= from && c.Time <= to)
.Where(c => c.Core == core)
.ToArray();
// The total duration of the hw counter samples we have
var duration = hardware
.Where(c => c.Type == TraceCounterType.IPC)
.Select(c => c.Duration / 1000)
.Sum();
var hwcount = hardware.Count();
// If we don't have anything, return zeroes
var counters = new EventHwCounters();
// If we harve hardware counters
if (hwcount == 0)
{
return(counters);
}
// Absolute numbers
counters.Cycles = (long)((hardware.Where(c => c.Type == TraceCounterType.Cycles).Select(c => c.Value).Sum() / duration) * this.Interval.TotalMilliseconds);
counters.L2Misses = (long)((hardware.Where(c => c.Type == TraceCounterType.L2Miss).Select(c => c.Value).Sum() / duration) * this.Interval.TotalMilliseconds);
counters.L3Misses = (long)((hardware.Where(c => c.Type == TraceCounterType.L3Miss).Select(c => c.Value).Sum() / duration) * this.Interval.TotalMilliseconds);
counters.L2Hits = (long)((hardware.Where(c => c.Type == TraceCounterType.L2Hit).Select(c => c.Value).Sum() / duration) * this.Interval.TotalMilliseconds);
counters.L3Hits = (long)((hardware.Where(c => c.Type == TraceCounterType.L3Hit).Select(c => c.Value).Sum() / duration) * this.Interval.TotalMilliseconds);
// Average or sum depending on the counter
counters.IPC = hardware.Where(c => c.Type == TraceCounterType.IPC).Select(c => c.Value).Average();
counters.L2Clock = hardware.Where(c => c.Type == TraceCounterType.L2Clock).Select(c => c.Value).Average();
counters.L3Clock = hardware.Where(c => c.Type == TraceCounterType.L3Clock).Select(c => c.Value).Average();
// Computed
counters.L1Misses = counters.L2Misses + counters.L2Hits;
// The duration of the TLB events
duration = hardware
.Where(c => c.Type == TraceCounterType.TLBMiss)
.Select(c => c.Duration / 1000)
.Sum();
counters.TLBMisses = (long)((hardware.Where(c => c.Type == TraceCounterType.TLBMiss).Select(c => c.Value).Sum() / duration) * this.Interval.TotalMilliseconds);
counters.TLBClock = hardware.Where(c => c.Type == TraceCounterType.TLBClock).Select(c => c.Value).Average();
return(counters);
}
/// <summary>
/// Gets the counters for the specified core and time period.
/// </summary>
/// <param name="core">The core number.</param>
/// <param name="from">The start time.</param>
/// <param name="to">The end time.</param>
/// <returns>The counters for that period.</returns>
protected virtual EventHwCounters GetCounters(int core, DateTime from, DateTime to)
{
// Get corresponding hardware counters
var hardware = this.Counters
.Where(c => c.Time >= from && c.Time <= to)
.Where(c => c.Core == core)
.ToArray();
// The total duration of the hw counter samples we have
var duration = hardware
.Where(c => c.Type == TraceCounterType.IPC)
.Select(c => c.Duration / 1000)
.Sum();
var hwcount = hardware.Count();
// If we don't have anything, return zeroes
var counters = new EventHwCounters();
// If we harve hardware counters
if (hwcount == 0)
return counters;
// Absolute numbers
counters.Cycles = (long)((hardware.Where(c => c.Type == TraceCounterType.Cycles).Select(c => c.Value).Sum() / duration) * this.Interval.TotalMilliseconds);
counters.L2Misses = (long)((hardware.Where(c => c.Type == TraceCounterType.L2Miss).Select(c => c.Value).Sum() / duration) * this.Interval.TotalMilliseconds);
counters.L3Misses = (long)((hardware.Where(c => c.Type == TraceCounterType.L3Miss).Select(c => c.Value).Sum() / duration) * this.Interval.TotalMilliseconds);
counters.L2Hits = (long)((hardware.Where(c => c.Type == TraceCounterType.L2Hit).Select(c => c.Value).Sum() / duration) * this.Interval.TotalMilliseconds);
counters.L3Hits = (long)((hardware.Where(c => c.Type == TraceCounterType.L3Hit).Select(c => c.Value).Sum() / duration) * this.Interval.TotalMilliseconds);
// Average or sum depending on the counter
counters.IPC = hardware.Where(c => c.Type == TraceCounterType.IPC).Select(c => c.Value).Average();
counters.L2Clock = hardware.Where(c => c.Type == TraceCounterType.L2Clock).Select(c => c.Value).Average();
counters.L3Clock = hardware.Where(c => c.Type == TraceCounterType.L3Clock).Select(c => c.Value).Average();
// Computed
counters.L1Misses = counters.L2Misses + counters.L2Hits;
// The duration of the TLB events
duration = hardware
.Where(c => c.Type == TraceCounterType.TLBMiss)
.Select(c => c.Duration / 1000)
.Sum();
counters.TLBMisses = (long)((hardware.Where(c => c.Type == TraceCounterType.TLBMiss).Select(c => c.Value).Sum() / duration) * this.Interval.TotalMilliseconds);
counters.TLBClock = hardware.Where(c => c.Type == TraceCounterType.TLBClock).Select(c => c.Value).Average();
return counters;
}
