// Writes batches of Empty records to the file. Records have timestamps with consecutive ticks starting from 1.
static async Task WriteBatch(string fname, long batches, long recsPerBatch)
{
Debug.Assert(batches >= 0);
Debug.Assert(recsPerBatch > 0);
using (var writer = new EmptyWriter(fname)) {
Stopwatch stopwatch = Stopwatch.StartNew();
for (long i = 0; i != batches; ++i)
{
await writer.WriteBatchAsync(Batch());
IEnumerable <Event <Empty> > Batch()
{
for (long j = 0; j != recsPerBatch; ++j)
{
yield return(new Event <Empty>(new DateTime(i * recsPerBatch + j + 1, DateTimeKind.Utc), new Empty()));
}
}
}
await writer.FlushAsync(flushToDisk : false);
double seconds = stopwatch.Elapsed.TotalSeconds;
long bytes = new FileInfo(fname).Length;
long records = batches * recsPerBatch;
Console.WriteLine(
" WriteBatch(batches: {0:N0}, recsPerBatch: {1:N0}): " +
"{2:N0} records, {3:N0} bytes, {4:N0} records/sec, {5:N0} bytes/sec.",
batches, recsPerBatch, records, bytes, records / seconds, bytes / seconds);
}
}
// Writes individual Empty records to the file. Records have timestamps with consecutive ticks starting from 1.
static async Task Write(string fname, long records)
{
Debug.Assert(records >= 0);
using (var writer = new EmptyWriter(fname)) {
Stopwatch stopwatch = Stopwatch.StartNew();
for (long i = 0; i != records; ++i)
{
await writer.WriteAsync(new Event <Empty>(new DateTime(i + 1, DateTimeKind.Utc), new Empty()));
}
await writer.FlushAsync(flushToDisk : false);
double seconds = stopwatch.Elapsed.TotalSeconds;
long bytes = new FileInfo(fname).Length;
Console.WriteLine(" Write(records: {0:N0}): {1:N0} bytes, {2:N0} records/sec, {3:N0} bytes/sec.",
records, bytes, records / seconds, bytes / seconds);
}
}
