protected override TimeSpan DoBenchmarkAlgorithm(FileStream stream, Action<byte[], int, int> work, BenchmarkFlags flags, CancellationToken cancellationToken)
{
var sequenceReadTimeTotal = new TimeSpan(0);
byte[] buffer = AssemblyUtility.GetData(BlockSize, flags.HasFlag(BenchmarkFlags.Compressible));
for (int i = 0; i < BlockCount; i++)
{
cancellationToken.ThrowIfCancellationRequested(); //可以取消
sequenceReadTimeTotal += AssemblyUtility.GetTime(() => work(buffer, 0, buffer.Length));
}
return sequenceReadTimeTotal;
}
protected override TimeSpan DoBenchmarkAlgorithm(FileStream stream, Action<byte[], int, int> work, BenchmarkFlags flags, CancellationToken cancellationToken)
{
var random = new Random();
TimeSpan timeTotal = default(TimeSpan);
for (int j = 0; j < BlockCount / this.outstandingThreadsCount; j++)
{
cancellationToken.ThrowIfCancellationRequested(); //可以取消
var randomArray = AssemblyUtility.GetData(BlockSize, flags.HasFlag(BenchmarkFlags.Compressible));
long posision = BlockSize * random.Next(BlockCount);
timeTotal += AssemblyUtility.GetTime(() =>
{
stream.Seek(posision, SeekOrigin.Begin);
work(randomArray, 0, randomArray.Length);
});
}
return timeTotal;
}
protected override TimeSpan DoBenchmarkAlgorithm(FileStream stream, Action<byte[], int, int> work, BenchmarkFlags flags, CancellationToken cancellationToken)
{
var randomBenchmarkTimeTotal = new TimeSpan(0);
for (int i = 0; i < BlockCount; i++)
{
cancellationToken.ThrowIfCancellationRequested(); //可以取消
var randomArray = AssemblyUtility.GetData(BlockSize, flags.HasFlag(BenchmarkFlags.Compressible));
long posision = BlockSize * this.RandomGen.Next(BlockCount);
randomBenchmarkTimeTotal += AssemblyUtility.GetTime(() =>
{
stream.Seek(posision, SeekOrigin.Begin);
work(randomArray, 0, randomArray.Length);
});
var blockCountIn60S = (double)i / randomBenchmarkTimeTotal.Ticks * 60;
this.BlockCountValue = (int)Min(this.BlockCountValue, Max(Max(i, EvalutionCount), blockCountIn60S));
}
return randomBenchmarkTimeTotal;
}
