void OpenDBSpeedTest()
{
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
var memStart = GC.GetTotalMemory(false);
_sw.Start();
using (var fileCollection = OpenTestFileCollection())
{
using (IKeyValueDB db = CreateKeyValueDB(fileCollection))
{
_sw.Stop();
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
var memFinish = GC.GetTotalMemory(false);
Console.WriteLine("Time to open DB : {0,15}ms Memory: {1}KB {2}KB", _sw.Elapsed.TotalMilliseconds,
(memFinish - memStart) / 1024, Process.GetCurrentProcess().WorkingSet64 / 1024);
Console.WriteLine(db.CalcStats());
_sw.Restart();
}
}
_sw.Stop();
Console.WriteLine("Time to close DB: {0,15}ms", _sw.Elapsed.TotalMilliseconds);
}
public void Run()
{
Initialize();
var cancelationSource = new CancellationTokenSource();
var eventTask = new Task(() =>
{
var cancelation = cancelationSource.Token;
while (!cancelation.IsCancellationRequested)
{
}
});
var consoleTask = new Task(() =>
{
var cancelation = cancelationSource.Token;
while (!cancelation.IsCancellationRequested)
{
switch (Console.ReadLine())
{
case "e":
cancelationSource.Cancel();
break;
case "m":
Console.WriteLine($"GC Memory: {GC.GetTotalMemory(false)} Working set: {Process.GetCurrentProcess().WorkingSet64}");
break;
case "s":
Console.WriteLine(_kvdb.CalcStats());
break;
}
}
});
Task.WaitAll(eventTask, consoleTask);
Dispose();
}
public string CalcStats()
{
return(_keyValueDB.CalcStats());
}
public void HugeTest()
{
const int keyCount = 100;
using (var fileCollection = CreateTestFileCollection())
{
_sw.Start();
using (IKeyValueDB db = CreateKeyValueDB(fileCollection, new NoCompressionStrategy()))
{
var key = new byte[100];
var value = new byte[100000000];
for (int i = 0; i < keyCount; i++)
{
using (var tr = db.StartTransaction())
{
key[0] = (byte)(i / 100);
key[1] = (byte)(i % 100);
value[100] = (byte)(i / 100);
value[200] = (byte)(i % 100);
tr.CreateOrUpdateKeyValue(key, value);
tr.Commit();
}
}
}
_sw.Stop();
Console.WriteLine("Time to create 10GB DB: {0,15}ms", _sw.Elapsed.TotalMilliseconds);
_sw.Restart();
using (IKeyValueDB db = new KeyValueDB(fileCollection))
{
_sw.Stop();
Console.WriteLine("Time to open 10GB DB: {0,15}ms", _sw.Elapsed.TotalMilliseconds);
_sw.Restart();
var key = new byte[100];
for (int i = 0; i < keyCount; i++)
{
using (var tr = db.StartTransaction())
{
key[0] = (byte)(i / 100);
key[1] = (byte)(i % 100);
tr.FindExactKey(key);
var value = tr.GetValueAsByteArray();
if (value[100] != (byte)(i / 100))
{
throw new InvalidDataException();
}
if (value[200] != (byte)(i % 100))
{
throw new InvalidDataException();
}
}
}
_sw.Stop();
Console.WriteLine("Time to read all values 10GB DB: {0,15}ms", _sw.Elapsed.TotalMilliseconds);
Console.WriteLine(db.CalcStats());
}
_sw.Restart();
using (IKeyValueDB db = CreateKeyValueDB(fileCollection))
{
_sw.Stop();
Console.WriteLine("Time to open2 10GB DB: {0,15}ms", _sw.Elapsed.TotalMilliseconds);
_sw.Restart();
var key = new byte[100];
for (int i = 0; i < keyCount; i++)
{
using (var tr = db.StartTransaction())
{
key[0] = (byte)(i / 100);
key[1] = (byte)(i % 100);
tr.FindExactKey(key);
var value = tr.GetValueAsByteArray();
if (value[100] != (byte)(i / 100))
{
throw new InvalidDataException();
}
if (value[200] != (byte)(i % 100))
{
throw new InvalidDataException();
}
}
}
_sw.Stop();
Console.WriteLine("Time to read2 all values 10GB DB: {0,15}ms", _sw.Elapsed.TotalMilliseconds);
Console.WriteLine(db.CalcStats());
}
}
}
