public static void DelayMicroSeconds(int ms)
{
var sw = new Stopwatch();
sw.Start();
while (sw.ElapsedMicroseconds() < ms)
{
continue;
}
}
public void is_copy_slower_for_big_arrays()
{
var gen2Gc = GC.CollectionCount(2);
var smallArray = new ArraySegment<byte>[1024];
var bigArray = new ArraySegment<byte>[1024*64];
var destinationArray = new ArraySegment<byte>[512];
//warmup
var batchSize = 100000;
for (int i = 0; i < batchSize; i++)
{
Array.Copy(smallArray, 512, destinationArray, 0, 512);
Array.Copy(bigArray, 512, destinationArray, 0, 512);
}
var watch = new Stopwatch();
watch.Start();
for (int i = 0; i < batchSize; i++)
{
Array.Copy(smallArray,512,destinationArray,0,512);
}
watch.Stop();
Console.WriteLine(string.Format("small copy us {0}", watch.ElapsedMicroseconds()) );
watch = new Stopwatch();
watch.Start();
for (int i = 0; i < batchSize; i++)
{
Array.Copy(bigArray, 2048, destinationArray, 0, 512);
}
watch.Stop();
Console.WriteLine(string.Format("big copy us {0}", watch.ElapsedMicroseconds()));
gen2Gc = GC.CollectionCount(2) - gen2Gc;
Console.WriteLine(gen2Gc);
}
