public void TestJetThreadstatsToStringPerf()
{
var t = new JET_THREADSTATS
{
cPageReferenced = 10,
cPageRead = 5,
cPagePreread = 4,
cPageDirtied = 3,
cPageRedirtied = 2,
cLogRecord = 1,
cbLogRecord = 0,
};
// Call the method once to make sure it is compiled.
string ignored = t.ToString();
const int N = 100000;
EsentStopwatch s = EsentStopwatch.StartNew();
for (int i = 0; i < N; ++i)
{
ignored = t.ToString();
}
s.Stop();
double ms = Math.Max(1, s.Elapsed.Milliseconds);
EseInteropTestHelper.ConsoleWriteLine("{0} calls in {1} ({2} ms/call)", N, s.Elapsed, ms / N);
}
public void TestResetEsentStopwatch()
{
var stopwatch = EsentStopwatch.StartNew();
stopwatch.Stop();
stopwatch.Reset();
}
/// <summary>
/// Perform and time the given action.
/// </summary>
/// <param name="name">The name of the action.</param>
/// <param name="action">The operation to perform.</param>
private static void TimeAction(string name, Action action)
{
var stopwatch = EsentStopwatch.StartNew();
action();
stopwatch.Stop();
EseInteropTestHelper.ConsoleWriteLine("{0}: {1} ({2})", name, stopwatch.Elapsed, stopwatch.ThreadStats);
}
public void TestResetEsentStopwatch()
{
var stopwatch = EsentStopwatch.StartNew();
stopwatch.Stop();
stopwatch.Reset();
Assert.AreEqual(TimeSpan.Zero, stopwatch.Elapsed);
}
/// <summary>
/// Perform and time the given action.
/// </summary>
/// <param name="action">The operation to perform.</param>
private static void TimeAction(Action action)
{
// Let other threads run before we start our test
Thread.Sleep(1);
var stopwatch = EsentStopwatch.StartNew();
action();
stopwatch.Stop();
Console.WriteLine("{0} ({1})", stopwatch.Elapsed, stopwatch.ThreadStats);
}
public void TestDictionaryLookupPerf()
{
const int NumIterations = 200000;
const int LookupsPerIteration = 5;
var stopwatch = EsentStopwatch.StartNew();
for (int i = 0; i < NumIterations; ++i)
{
JET_COLUMNID boolean = this.columnidDict["Boolean"];
JET_COLUMNID int16 = this.columnidDict["Int16"];
JET_COLUMNID @float = this.columnidDict["Float"];
JET_COLUMNID ascii = this.columnidDict["Ascii"];
JET_COLUMNID uint64 = this.columnidDict["Uint64"];
}
stopwatch.Stop();
const double TotalLookups = NumIterations * LookupsPerIteration;
double lookupRate = TotalLookups / stopwatch.Elapsed.Milliseconds;
EseInteropTestHelper.ConsoleWriteLine("{0} lookups/millisecond", lookupRate);
}
public void TestStartNewAndStopEsentStopwatch()
{
var stopwatch = EsentStopwatch.StartNew();
stopwatch.Stop();
}