private Task<BenchmarkResult> SeekRandom(BenchmarkParameters parameters)
{
var random = new Random();
var found = 0;
var result = new BenchmarkResult(parameters);
for (var i = 0; i < parameters.Reads; i++)
{
using (var iterator = storage.Reader.NewIterator(new ReadOptions()))
{
var k = random.Next() % options.Num;
var key = string.Format("{0:0000000000000000}", k);
Slice sliceKey = key;
iterator.Seek(sliceKey);
if (iterator.IsValid && sliceKey.CompareTo(iterator.Key) == 0)
found++;
result.FinishOperation();
}
}
result.AddMessage(string.Format("({0} of {1} found)", found, parameters.Num));
return Task.FromResult(result);
}
private Task<BenchmarkResult> ReadRandom(BenchmarkParameters parameters)
{
var random = new Random();
var found = 0;
var result = new BenchmarkResult(parameters);
for (int i = 0; i < parameters.Reads; i++)
{
var k = random.Next() % options.Num;
var key = string.Format("{0:0000000000000000}", k);
using (var streamValue = storage.Reader.Read(key))
{
if (streamValue != null)
found++;
}
result.FinishOperation();
}
result.AddMessage(string.Format("({0} of {1} found)", found, parameters.Num));
return Task.FromResult(result);
}
private Task<BenchmarkResult> Crc32c(BenchmarkParameters parameters)
{
const long Size = 4096;
var buffer = new byte[Size];
for (int i = 0; i < Size; i++)
{
buffer[i] = (byte)'x';
}
var result = new BenchmarkResult(parameters);
long bytes = 0;
uint crc = 0;
while (bytes < 500 * 1048576)
{
crc = Crc.Value(buffer, 0, buffer.Length);
bytes += Size;
result.FinishOperation();
}
result.AddBytes(bytes);
result.AddMessage("(4K per op)");
result.AddMessage(string.Format("CRC is {0}", crc));
return new CompletedTask<BenchmarkResult>(result);
}