private static async Task BenchSerialWriteAsync(IFdbDatabase db, int N, CancellationToken ct)
{
// read a lot of small keys, one by one
Console.WriteLine($"=== BenchSerialWrite(N={N:N0}) ===");
var location = db.Root.ByKey("hello");
var sw = Stopwatch.StartNew();
IFdbTransaction trans = null;
IDynamicKeySubspace subspace = null;
try
{
for (int i = 0; i < N; i++)
{
if (trans == null)
{
trans = await db.BeginTransactionAsync(ct);
subspace = await location.Resolve(trans);
}
trans.Set(subspace.Encode(i), Slice.FromInt32(i));
if (trans.Size > 100 * 1024)
{
await trans.CommitAsync();
trans.Dispose();
trans = null;
}
}
await trans.CommitAsync();
}
finally
{
trans?.Dispose();
}
sw.Stop();
Console.WriteLine($"Took {sw.Elapsed.TotalSeconds:N3} sec to read {N:N0} items ({FormatTimeMicro(sw.Elapsed.TotalMilliseconds / N)}/read, {N/sw.Elapsed.TotalSeconds:N0} read/sec)");
Console.WriteLine();
}
private static async Task BenchSerialWriteAsync(IFdbDatabase db, int N, CancellationToken ct)
{
// read a lot of small keys, one by one
var location = db.Partition("hello");
var sw = Stopwatch.StartNew();
IFdbTransaction trans = null;
try
{
for (int i = 0; i < N; i++)
{
if (trans == null)
{
trans = db.BeginTransaction(ct);
}
trans.Set(location.Pack(i), Slice.FromInt32(i));
if (trans.Size > 100 * 1024)
{
await trans.CommitAsync();
trans.Dispose();
trans = null;
}
}
await trans.CommitAsync();
}
finally
{
if (trans != null)
{
trans.Dispose();
}
}
sw.Stop();
Console.WriteLine("Took " + sw.Elapsed + " to read " + N + " items (" + FormatTimeMicro(sw.Elapsed.TotalMilliseconds / N) + "/read)");
}
private async Task <List <PerformanceRecord> > WriteInternalAsync(string operation,
IEnumerator <TestData> enumerator,
long itemsPerTransaction, long numberOfTransactions, PerfTracker perfTracker, FdbDatabase db)
{
var sw = new Stopwatch();
byte[] valueToWrite = null;
var records = new List <PerformanceRecord>();
var location = db.GlobalSpace;
sw.Restart();
for (int transactions = 0; transactions < numberOfTransactions; transactions++)
{
sw.Restart();
using (IFdbTransaction tx = db.BeginTransaction())
{
for (int i = 0; i < itemsPerTransaction; i++)
{
enumerator.MoveNext();
valueToWrite = GetValueToWrite(valueToWrite, enumerator.Current.ValueSize);
tx.Set(location.Pack(enumerator.Current.Id), Slice.Create(valueToWrite));
}
await tx.CommitAsync();
perfTracker.Record(sw.ElapsedMilliseconds);
}
sw.Stop();
records.Add(new PerformanceRecord
{
Operation = operation,
Time = DateTime.Now,
Duration = sw.ElapsedMilliseconds,
ProcessedItems = itemsPerTransaction
});
}
sw.Stop();
return(records);
}
public virtual Task CommitAsync()
{
ThrowIfDisposed();
return(m_transaction.CommitAsync());
}
