public LinksSourcesTreeMethods(Links links, LinksHeader* header)
{
_db = links;
_links = links._links;
_header = header;
}
public static void Create64BillionLinks()
{
string tempFilename = Path.GetTempFileName();
using (var links = new Platform.Links.DataBase.CoreUnsafe.Pairs.Links(tempFilename, DefaultLinksSize))
{
ulong linksBeforeTest = links.Total;
long linksToCreate = 64*1024*1024/Platform.Links.DataBase.CoreUnsafe.Pairs.Links.LinkSizeInBytes;
Console.WriteLine("Creating {0} links.", linksToCreate);
TimeSpan elapsedTime = Measure(() =>
{
for (long i = 0; i < linksToCreate; i++)
{
links.Create(0, 0);
}
});
ulong linksCreated = links.Total - linksBeforeTest;
double linksPerSecond = linksCreated/elapsedTime.TotalSeconds;
Console.WriteLine("Current links count: {0}.", links.Total);
Console.WriteLine("{0} links created in {1} ({2} links per second)", linksCreated, elapsedTime,
(long) linksPerSecond);
}
File.Delete(tempFilename);
}
public LinksTargetsTreeMethods(Links links, LinksHeader* header)
{
_db = links;
_links = links._links;
_header = header;
}
public void TestGetTargetInParallel()
{
string tempFilename = Path.GetTempFileName();
using (var links = new Platform.Links.DataBase.CoreUnsafe.Pairs.Links(tempFilename, DefaultLinksSize))
{
Console.WriteLine("Testing GetTarget function with {0} Iterations in parallel.", Iterations);
long counter = 0;
//var firstLink = links.First();
ulong firstLink = links.Create(0, 0);
Stopwatch sw = Stopwatch.StartNew();
Parallel.For(0, Iterations, x =>
{
Interlocked.Add(ref counter, (long) links.GetTarget(firstLink));
//Interlocked.Increment(ref counter);
});
TimeSpan elapsedTime = sw.Elapsed;
double iterationsPerSecond = Iterations/elapsedTime.TotalSeconds;
links.Delete(ref firstLink);
Console.WriteLine(
"{0} Iterations of GetTarget function done in {1} ({2} Iterations per second), counter result: {3}",
Iterations, elapsedTime, (long) iterationsPerSecond, counter);
}
File.Delete(tempFilename);
}
public void TestRandomSearchAll()
{
string tempFilename = Path.GetTempFileName();
using (var links = new Platform.Links.DataBase.CoreUnsafe.Pairs.Links(tempFilename, DefaultLinksSize))
{
ulong counter = 0;
ulong minLink = 1UL;
ulong maxLink = links.Total;
ulong iterations = links.Total;
var rnd = new Random((int) DateTime.UtcNow.Ticks);
Console.WriteLine("Testing Random Search with {0} Iterations.", links.Total);
Stopwatch sw = Stopwatch.StartNew();
for (ulong i = iterations; i > 0; i--)
{
ulong source = rnd.NextUInt64(minLink, maxLink);
ulong target = rnd.NextUInt64(minLink, maxLink);
counter += links.Search(source, target);
}
TimeSpan elapsedTime = sw.Elapsed;
double iterationsPerSecond = iterations/elapsedTime.TotalSeconds;
Console.WriteLine("{0} Iterations of Random Search done in {1} ({2} Iterations per second), c: {3}",
iterations, elapsedTime, (long) iterationsPerSecond, counter);
}
File.Delete(tempFilename);
}
public void TestEach()
{
string tempFilename = Path.GetTempFileName();
using (var links = new Platform.Links.DataBase.CoreUnsafe.Pairs.Links(tempFilename, DefaultLinksSize))
{
ulong counter = 0;
Console.WriteLine("Testing Each function.");
Stopwatch sw = Stopwatch.StartNew();
links.Each(0, 0, x =>
{
counter++;
return true;
});
TimeSpan elapsedTime = sw.Elapsed;
double linksPerSecond = counter/elapsedTime.TotalSeconds;
Console.WriteLine("{0} Iterations of Each's handler function done in {1} ({2} links per second)",
counter, elapsedTime, (long) linksPerSecond);
}
File.Delete(tempFilename);
}
public void GetSourceTest()
{
string tempFilename = Path.GetTempFileName();
using (var links = new Platform.Links.DataBase.CoreUnsafe.Pairs.Links(tempFilename, DefaultLinksSize))
{
Console.WriteLine("Testing GetSource function with {0} Iterations.", Iterations);
ulong counter = 0;
//var firstLink = links.First();
// Создаём одну связь, из которой будет производить считывание
ulong firstLink = links.Create(0, 0);
Stopwatch sw = Stopwatch.StartNew();
// Тестируем саму функцию
for (ulong i = 0; i < Iterations; i++)
counter += links.GetSource(firstLink);
TimeSpan elapsedTime = sw.Elapsed;
double iterationsPerSecond = Iterations/elapsedTime.TotalSeconds;
// Удаляем связь, из которой производилось считывание
links.Delete(ref firstLink);
Console.WriteLine(
"{0} Iterations of GetSource function done in {1} ({2} Iterations per second), counter result: {3}",
Iterations, elapsedTime, (long) iterationsPerSecond, counter);
}
File.Delete(tempFilename);
}
public void BasicMemoryTest()
{
string tempFilename = Path.GetTempFileName();
using (var links = new Platform.Links.DataBase.CoreUnsafe.Pairs.Links(tempFilename, 1024*1024))
{
links.TestBasicMemoryManagement();
}
File.Delete(tempFilename);
}
public static void TestDeletionOfAllLinks()
{
string tempFilename = Path.GetTempFileName();
using (var links = new Platform.Links.DataBase.CoreUnsafe.Pairs.Links(tempFilename, DefaultLinksSize))
{
ulong linksBeforeTest = links.Total;
Console.WriteLine("Deleting all links");
TimeSpan elapsedTime = Measure(links.DeleteAllLinks);
ulong linksDeleted = linksBeforeTest - links.Total;
double linksPerSecond = linksDeleted/elapsedTime.TotalSeconds;
Console.WriteLine("{0} links deleted in {1} ({2} links per second)", linksDeleted, elapsedTime,
(long) linksPerSecond);
}
File.Delete(tempFilename);
}
public static void Create64BillionLinksInParallel()
{
string tempFilename = Path.GetTempFileName();
using (var links = new Platform.Links.DataBase.CoreUnsafe.Pairs.Links(tempFilename, DefaultLinksSize))
{
ulong linksBeforeTest = links.Total;
Stopwatch sw = Stopwatch.StartNew();
long linksToCreate = 64*1024*1024/Platform.Links.DataBase.CoreUnsafe.Pairs.Links.LinkSizeInBytes;
Console.WriteLine("Creating {0} links in parallel.", linksToCreate);
Parallel.For(0, linksToCreate, x => links.Create(0, 0));
TimeSpan elapsedTime = sw.Elapsed;
ulong linksCreated = links.Total - linksBeforeTest;
double linksPerSecond = linksCreated/elapsedTime.TotalSeconds;
Console.WriteLine("{0} links created in {1} ({2} links per second)", linksCreated, elapsedTime,
(long) linksPerSecond);
}
File.Delete(tempFilename);
}
