public void RandomizedThreadedLookups()
{
string path = Path.GetFullPath("TestData\\RandomizedThreadedLookups");
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
List <KeyValuePair <Key, Value> > items = new List <KeyValuePair <Key, Value> > ();
int num_items = 10000;
var mt = new MemTable();
for (int i = 0; i < num_items; i++)
{
var k0 = Key.Random(40);
var v0 = Value.Random(200);
mt.Add(k0, v0);
items.Add(new KeyValuePair <Key, Value> (k0, v0));
}
mt.WriteToSortedBlockTable("TestData\\RandomizedThreadedLookups", 10, 10);
var cache = new RazorCache();
var sbt = new SortedBlockTable(cache, "TestData\\RandomizedThreadedLookups", 10, 10);
var indexCache = new RazorCache();
List <Thread> threads = new List <Thread> ();
for (int t = 0; t < 10; t++)
{
threads.Add(new Thread((num) => {
for (int k = 0; k < num_items / 10; k++)
{
var pair = items [k * (int)num];
Value value;
Assert.IsTrue(SortedBlockTable.Lookup("TestData\\RandomizedThreadedLookups", 10, 10, indexCache, pair.Key, out value, ExceptionHandling.ThrowAll, null));
Assert.AreEqual(pair.Value, value);
}
}));
}
var timer = new Stopwatch();
timer.Start();
int threadNum = 0;
threads.ForEach((t) => t.Start(threadNum++));
threads.ForEach((t) => t.Join());
timer.Stop();
Console.WriteLine("Randomized (threaded) read sbt table at a throughput of {0} MB/s (avg {1} ms per lookup)", (double)mt.Size / timer.Elapsed.TotalSeconds / (1024.0 * 1024.0), (double)timer.Elapsed.TotalSeconds / (double)num_items);
sbt.Close();
}
public void RandomizedLookups()
{
string path = Path.GetFullPath("TestData\\RandomizedKeys");
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
List <KeyValuePair <Key, Value> > items = new List <KeyValuePair <Key, Value> > ();
int num_items = 10000;
var mt = new MemTable();
for (int i = 0; i < num_items; i++)
{
var k0 = Key.Random(40);
var v0 = Value.Random(200);
mt.Add(k0, v0);
items.Add(new KeyValuePair <Key, Value> (k0, v0));
}
mt.WriteToSortedBlockTable("TestData\\RandomizedKeys", 10, 10);
var cache = new RazorCache();
var sbt = new SortedBlockTable(cache, "TestData\\RandomizedKeys", 10, 10);
var indexCache = new RazorCache();
var timer = new Stopwatch();
timer.Start();
foreach (var pair in items)
{
Value value;
Assert.IsTrue(SortedBlockTable.Lookup("TestData\\RandomizedKeys", 10, 10, indexCache, pair.Key, out value, ExceptionHandling.ThrowAll, null));
Assert.AreEqual(pair.Value, value);
}
timer.Stop();
Value randomValue;
Assert.IsFalse(SortedBlockTable.Lookup("TestData\\RandomizedKeys", 10, 10, indexCache, Key.Random(40), out randomValue, ExceptionHandling.ThrowAll, null));
Console.WriteLine("Randomized read sbt table at a throughput of {0} MB/s (avg {1} ms per lookup)", (double)mt.Size / timer.Elapsed.TotalSeconds / (1024.0 * 1024.0), (double)timer.Elapsed.TotalSeconds / (double)num_items);
sbt.Close();
}