Beispiel #1
0
        public void FitPreallocateString()
        {
            using (var pile = new DefaultPile())
            {
                pile.Start();

                var obj1 = "abcdefgh";

                var p1  = pile.Put(obj1, preallocateBlockSize: 4000);
                var got = pile.Get(p1) as string;
                Aver.AreEqual("abcdefgh", got);

                Aver.AreEqual(4000, pile.SizeOf(p1));

                var obj2 = "abcdefghijklmnopqrst0912345";
                Aver.IsTrue(pile.Put(p1, obj2));

                Aver.AreEqual(1, pile.ObjectCount);
                got = pile.Get(p1) as string;

                Aver.AreEqual("abcdefghijklmnopqrst0912345", got);

                Aver.IsTrue(pile.AllocatedMemoryBytes > 0);
                Aver.IsTrue(pile.Delete(p1));
                Aver.IsTrue(pile.AllocatedMemoryBytes == 0);
                Aver.IsTrue(pile.ObjectCount == 0);
            }
        }
Beispiel #2
0
        public void LinkStringNoPreallocate()
        {
            using (var pile = new DefaultPile(NOPApplication.Instance))
            {
                pile.Start();

                var obj1 = "abcdefgh";

                var p1  = pile.Put(obj1);
                var got = pile.Get(p1) as string;
                Aver.AreEqual("abcdefgh", got);

                var obj2 = "abcdefghijklmnopqrst0912345";
                Aver.IsTrue(pile.Put(p1, obj2));

                Aver.AreEqual(1, pile.ObjectCount);
                got = pile.Get(p1) as string;

                Aver.AreEqual("abcdefghijklmnopqrst0912345", got);

                Aver.IsTrue(pile.AllocatedMemoryBytes > 0);
                Aver.IsTrue(pile.Delete(p1));
                Aver.IsTrue(pile.AllocatedMemoryBytes == 0);
                Aver.IsTrue(pile.ObjectCount == 0);
            }
        }
Beispiel #3
0
        public void FitPreallocateByteArray()
        {
            using (var pile = new DefaultPile())
            {
                pile.Start();

                var obj1 = new byte[3];

                var p1  = pile.Put(obj1, preallocateBlockSize: 4000);
                var got = pile.Get(p1) as byte[];
                Aver.AreEqual(3, got.Length);

                Aver.AreEqual(4000, pile.SizeOf(p1));

                var obj2 = new byte[571];
                Aver.IsTrue(pile.Put(p1, obj2));

                Aver.AreEqual(1, pile.ObjectCount);
                got = pile.Get(p1) as byte[];

                Aver.AreEqual(571, got.Length);

                Aver.IsTrue(pile.AllocatedMemoryBytes > 0);
                Aver.IsTrue(pile.Delete(p1));
                Aver.IsTrue(pile.AllocatedMemoryBytes == 0);
                Aver.IsTrue(pile.ObjectCount == 0);
            }
        }
Beispiel #4
0
        public void PutGetTwo()
        {
            using (var pile = new DefaultPile())
            {
                pile.Start();

                var ipile = pile as IPile;

                var rowIn1 = CheckoutRow.MakeFake(new GDID(0, 1));
                var rowIn2 = CheckoutRow.MakeFake(new GDID(0, 2));

                var pp1 = ipile.Put(rowIn1);
                var pp2 = ipile.Put(rowIn2);

                Assert.AreEqual(2, ipile.ObjectCount);
                Assert.AreEqual(DefaultPile.SEG_SIZE_DFLT, ipile.AllocatedMemoryBytes);
                Assert.AreEqual(1, ipile.SegmentCount);

                var rowOut1 = pile.Get(pp1) as CheckoutRow;
                var rowOut2 = pile.Get(pp2) as CheckoutRow;

                Assert.AreEqual(rowIn1, rowOut1);
                Assert.AreEqual(rowIn2, rowOut2);
            }
        }
Beispiel #5
0
        public void PutSubarray()
        {
            using (var pile = new DefaultPile(NOPApplication.Instance))
            {
                pile.Start();

                var src = new byte[] { 1, 6, 9, 250 };
                var sub = new Subarray <byte>();
                sub.Set(src, 2);

                var ptr1 = pile.Put(sub);
                sub.Set(src, 4);
                var ptr2 = pile.Put(sub);
                var got1 = pile.Get(ptr1) as byte[];
                var got2 = pile.Get(ptr2) as byte[];

                Aver.IsNotNull(got1);
                Aver.AreEqual(2, got1.Length);
                Aver.AreEqual(1, got1[0]);
                Aver.AreEqual(6, got1[1]);

                Aver.IsNotNull(got2);
                Aver.AreEqual(4, got2.Length);
                Aver.AreEqual(1, got2[0]);
                Aver.AreEqual(6, got2[1]);
                Aver.AreEqual(9, got2[2]);
                Aver.AreEqual(250, got2[3]);
            }
        }
Beispiel #6
0
        public void LinkByteArrayNoPreallocate()
        {
            using (var pile = new DefaultPile())
            {
                pile.Start();

                var obj1 = new byte[12];

                var p1  = pile.Put(obj1);
                var got = pile.Get(p1) as byte[];
                Aver.AreEqual(12, got.Length);

                var obj2 = new byte[389];
                Aver.IsTrue(pile.Put(p1, obj2));

                Aver.AreEqual(1, pile.ObjectCount);
                got = pile.Get(p1) as byte[];

                Aver.AreEqual(389, got.Length);

                Aver.IsTrue(pile.AllocatedMemoryBytes > 0);
                Aver.IsTrue(pile.Delete(p1));
                Aver.IsTrue(pile.AllocatedMemoryBytes == 0);
                Aver.IsTrue(pile.ObjectCount == 0);
            }
        }
Beispiel #7
0
        public void Buffers(int count, int segmentSize)
        {
            using (var pile = new DefaultPile())
            {
                pile.SegmentSize = segmentSize;
                pile.Start();

                var hs = new HashSet <int>();

                for (var i = 0; i < count; i++)
                {
                    var buf = new byte[4 + (i % 512)];
                    buf.WriteBEInt32(i);
                    pile.Put(buf);
                    hs.Add(i);
                }

                Console.WriteLine("Created {0} segments".Args(pile.SegmentCount));

                var j = 0;
                foreach (var entry in pile)
                {
                    var buf = pile.Get(entry.Pointer) as byte[];
                    Aver.IsNotNull(buf);
                    Aver.IsTrue(buf.Length >= 4);
                    var i = buf.ReadBEInt32();
                    Aver.IsTrue(hs.Remove(i));
                    Aver.IsTrue(entry.Type == PileEntry.DataType.Buffer);
                    j++;
                }
                Aver.AreEqual(j, count);
                Aver.AreEqual(0, hs.Count);
            }
        }
        [Run("cnt=32000000  size=32  parallel=12")] //12 threads put 32,000,000 byte[32] in 5,008 msec at 6,389,776 ops/sec
        //12 threads got 32,000,000 byte[32] in 3,787 msec at 8,449,960 ops/sec
        //--------------------------------------------------------------------------------
        //12 threads put 32,000,000 byte[32] in 2,963 msec at 10,799,865 ops/sec
        //12 threads got 32,000,000 byte[32] in 2,253 msec at 14,203,285 ops/sec


        public void ByteBuf(int CNT, int size, int parallel)
        {
            using (var pile = new DefaultPile(NOPApplication.Instance))
            {
                pile.Start();

                var str = new byte[size];
                var pp  = pile.Put(str);

                var sw = Stopwatch.StartNew();
                Parallel.For(0, CNT, new ParallelOptions {
                    MaxDegreeOfParallelism = parallel
                },
                             (i) =>
                {
                    pile.Put(str);
                });

                var el = sw.ElapsedMilliseconds;
                Console.WriteLine("{0:n0} threads put {1:n0} byte[{2:n0}] in {3:n0} msec at {4:n0} ops/sec".Args(parallel, CNT, size, el, CNT / (el / 1000d)));


                sw.Restart();
                Parallel.For(0, CNT, new ParallelOptions {
                    MaxDegreeOfParallelism = parallel
                },
                             (i) =>
                {
                    pile.Get(pp);
                });

                el = sw.ElapsedMilliseconds;
                Console.WriteLine("{0:n0} threads got {1:n0} byte[{2:n0}] in {3:n0} msec at {4:n0} ops/sec".Args(parallel, CNT, size, el, CNT / (el / 1000d)));
            }
        }
Beispiel #9
0
        public void LinkNoPreallocate()
        {
            using (var pile = new DefaultPile())
            {
                pile.Start();

                var obj1 = new Payload {
                    ID = 1, Name = "1", Data = null
                };

                var p1 = pile.Put(obj1);

                Aver.IsTrue(pile.SizeOf(p1) < 128);

                var obj2 = new Payload {
                    ID = 2, Name = "2", Data = new byte [128]
                };
                Aver.IsTrue(pile.Put(p1, obj2));

                Aver.AreEqual(1, pile.ObjectCount);
                var got = pile.Get(p1) as Payload;

                Aver.AreEqual(2, got.ID);
                Aver.AreEqual("2", got.Name);
                Aver.IsNotNull(got.Data);
                Aver.AreEqual(128, got.Data.Length);

                Aver.IsTrue(pile.AllocatedMemoryBytes > 0);
                Aver.IsTrue(pile.Delete(p1));
                Aver.IsTrue(pile.AllocatedMemoryBytes == 0);
                Aver.IsTrue(pile.ObjectCount == 0);
            }
        }
Beispiel #10
0
        public void FitPreallocate()
        {
            using (var pile = new DefaultPile())
            {
                pile.Start();

                var obj1 = new Payload {
                    ID = 1, Name = "1", Data = null
                };

                var p1 = pile.Put(obj1, preallocateBlockSize: 4000);

                Aver.AreEqual(4000, pile.SizeOf(p1));

                var obj2 = new Payload {
                    ID = 2, Name = "2", Data = new byte [] { 1, 2, 3, 4, 5, 6, 7, 8 }
                };
                Aver.IsTrue(pile.Put(p1, obj2));

                Aver.AreEqual(1, pile.ObjectCount);
                var got = pile.Get(p1) as Payload;

                Aver.AreEqual(2, got.ID);
                Aver.AreEqual("2", got.Name);
                Aver.IsNotNull(got.Data);
                Aver.AreEqual(8, got.Data.Length);

                Aver.IsTrue(pile.AllocatedMemoryBytes > 0);
                Aver.IsTrue(pile.Delete(p1));
                Aver.IsTrue(pile.AllocatedMemoryBytes == 0);
                Aver.IsTrue(pile.ObjectCount == 0);
            }
        }
Beispiel #11
0
        public void LinkPreallocate()
        {
            using (var pile = new DefaultPile(NOPApplication.Instance))
            {
                pile.Start();

                var obj1 = new Payload {
                    ID = 1, Name = "1", Data = null
                };

                var p1 = pile.Put(obj1, preallocateBlockSize: 2000);

                Aver.AreEqual(2000, pile.SizeOf(p1));

                var obj2 = new Payload {
                    ID = 2, Name = "2", Data = new byte [3000]
                };
                Aver.IsTrue(pile.Put(p1, obj2));

                Aver.AreEqual(1, pile.ObjectCount);
                var got = pile.Get(p1) as Payload;

                Aver.AreEqual(2, got.ID);
                Aver.AreEqual("2", got.Name);
                Aver.IsNotNull(got.Data);
                Aver.AreEqual(3000, got.Data.Length);

                Aver.IsTrue(pile.AllocatedMemoryBytes > 0);
                Aver.IsTrue(pile.Delete(p1));
                Aver.IsTrue(pile.AllocatedMemoryBytes == 0);
                Aver.IsTrue(pile.ObjectCount == 0);
            }
        }
        public static void NoGrowth_ByteArray(bool speed, int durationSec, int payloadSizeMin, int payloadSizeMax, int countMin, int countMax)
        {
            using (var pile = new DefaultPile(NOPApplication.Instance))
            {
                pile.AllocMode = speed ? AllocationMode.FavorSpeed : AllocationMode.ReuseSpace;
                pile.Start();
                var startTime = DateTime.UtcNow;
                var tasks     = new List <Task>();
                for (var t = 0; t < (System.Environment.ProcessorCount - 1); t++)
                {
                    tasks.Add(Task.Factory.StartNew(() =>
                    {
                        var list = new List <CheckByteArray>();
                        bool put = true;
                        while (true)
                        {
                            if ((DateTime.UtcNow - startTime).TotalSeconds >= durationSec)
                            {
                                return;
                            }

                            if (put)
                            {
                                var cnt = Ambient.Random.NextScaledRandomInteger(countMin, countMax);
                                for (int j = 0; j < cnt; j++)
                                {
                                    var payloadSize      = Ambient.Random.NextScaledRandomInteger(payloadSizeMin, payloadSizeMax);
                                    var val              = new byte[payloadSize];
                                    val[0]               = (byte)Ambient.Random.NextRandomInteger;
                                    val[payloadSize - 1] = (byte)Ambient.Random.NextRandomInteger;

                                    var ptr = pile.Put(val);

                                    var element = new CheckByteArray(ptr, payloadSize - 1, val[0], val[payloadSize - 1]);
                                    list.Add(element);
                                }
                                Console.WriteLine("Thread {0} put {1} objects".Args(Thread.CurrentThread.ManagedThreadId, list.Count));
                                put = false;
                            }
                            else
                            {
                                Console.WriteLine("Thread {0} deleted {1} objects".Args(Thread.CurrentThread.ManagedThreadId, list.Count));
                                for (var j = 0; j < list.Count; j++)
                                {
                                    var element = list[j];
                                    var buf     = pile.Get(element.Ptr) as byte[];
                                    Aver.AreEqual(element.FirstByte, buf[0]);
                                    Aver.AreEqual(element.LastByte, buf[element.IdxLast]);
                                    pile.Delete(element.Ptr);
                                }
                                list.Clear();
                                put = true;
                            }
                        }
                    }, TaskCreationOptions.LongRunning));
                }
                Task.WaitAll(tasks.ToArray());
            }
            Console.WriteLine("Test finished.");
        }
Beispiel #13
0
        public static void NoGrowth_TRow(bool speed, int durationSec, int countMin, int countMax)
        {
            using (var pile = new DefaultPile())
            {
                pile.AllocMode = speed ? AllocationMode.FavorSpeed : AllocationMode.ReuseSpace;
                pile.Start();
                var startTime = DateTime.UtcNow;
                var tasks     = new List <Task>();
                for (var t = 0; t < (System.Environment.ProcessorCount - 1); t++)
                {
                    tasks.Add(Task.Factory.StartNew(() =>
                    {
                        var list = new List <CheckTRow>();
                        bool put = true;
                        while (true)
                        {
                            if ((DateTime.UtcNow - startTime).TotalSeconds >= durationSec)
                            {
                                return;
                            }

                            if (put)
                            {
                                var cnt = NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(countMin, countMax);
                                for (int j = 0; j < cnt; j++)
                                {
                                    var val = PersonRow.MakeFake(new GDID());

                                    var ptr = pile.Put(val);

                                    var element = new CheckTRow(ptr, val.ID, val.Address1);
                                    list.Add(element);
                                }
                                Console.WriteLine("Thread {0} put {1} objects".Args(Thread.CurrentThread.ManagedThreadId, list.Count));
                                put = false;
                            }
                            else
                            {
                                Console.WriteLine("Thread {0} deleted {1} objects".Args(Thread.CurrentThread.ManagedThreadId, list.Count));
                                for (var j = 0; j < list.Count; j++)
                                {
                                    var element = list[j];
                                    var buf     = pile.Get(element.Ptr) as PersonRow;
                                    Aver.AreEqual(element.Id, buf.ID);
                                    Aver.AreEqual(element.Address, buf.Address1);
                                    pile.Delete(element.Ptr);
                                }
                                list.Clear();
                                put = true;
                            }
                        }
                    }, TaskCreationOptions.LongRunning));
                }
                Task.WaitAll(tasks.ToArray());
            }
            Console.WriteLine("Test finished.");
        }
Beispiel #14
0
        public void MulticulturalString()
        {
            using (var pile = new DefaultPile(NOPApplication.Instance))
            {
                pile.Start();

                var str = @"
外国語の学習と教授

Language Learning and Teaching

Изучение и обучение иностранных языков

Tere Daaheng Aneng Karimah

語文教學・语文教学

Enseñanza y estudio de idiomas

Изучаване и Преподаване на Чужди Езици

ქართული ენის შესწავლა და სწავლება

'læŋɡwidʒ 'lɘr:niŋ ænd 'ti:tʃiŋ

Lus kawm thaib qhia

Ngôn Ngữ, Sự học,

‭‫ללמוד וללמד את השֵפה

L'enseignement et l'étude des langues

말배우기와 가르치기

Nauka języków obcych

Γλωσσική Εκμὰθηση και Διδασκαλία

‭‫ﺗﺪﺭﯾﺲ ﻭ ﯾﺎﺩﮔﯿﺮﯼ ﺯﺑﺎﻥ

Sprachlernen und -lehren

‭‫ﺗﻌﻠﻢ ﻭﺗﺪﺭﻳﺲ ﺍﻟﻌﺮﺑﻴﺔ

เรียนและสอนภาษา";

                var pp = pile.Put(str);

                var got = pile.Get(pp) as string;

                Aver.AreEqual(str, got);
            }
        }
Beispiel #15
0
        public void PutString()
        {
            using (var pile = new DefaultPile(NOPApplication.Instance))
            {
                pile.Start();

                var ptr = pile.Put("abcd123");
                var got = pile.Get(ptr) as string;
                Aver.IsNotNull(got);
                Aver.AreEqual("abcd123", got);
            }
        }
Beispiel #16
0
        private void btnPersonGet_Click(object sender, EventArgs e)
        {
            if (lbPerson.SelectedItem == null)
            {
                return;
            }
            var pp = (PilePointer)lbPerson.SelectedItem;

            var    cnt    = tbPersonCount.Text.AsInt(10);
            var    w      = Stopwatch.StartNew();
            object person = null;

            for (var i = 0; i < cnt; i++)
            {
                person = m_Pile.Get(pp);
            }

            var elps = w.ElapsedMilliseconds;

            MessageBox.Show("Read {0:n0} in {1:n0}ms at {2:n0}/sec \r\n {3}".Args(cnt, elps, cnt / (elps / 1000d), person == null ? "[null]" : person.ToString()));
        }
Beispiel #17
0
        public void PutByteArray()
        {
            using (var pile = new DefaultPile(NOPApplication.Instance))
            {
                pile.Start();

                var ptr = pile.Put(new byte[] { 1, 6, 9 });
                var got = pile.Get(ptr) as byte[];
                Aver.IsNotNull(got);
                Aver.AreEqual(3, got.Length);
                Aver.AreEqual(1, got[0]);
                Aver.AreEqual(6, got[1]);
                Aver.AreEqual(9, got[2]);
            }
        }
Beispiel #18
0
        [Run("cnt=1048576")] // 1024 * 1024
        public void LongMulticulturalString(int cnt)
        {
            using (var pile = new DefaultPile(NOPApplication.Instance))
            {
                pile.Start();

                var str = new string('久', cnt);

                var pp = pile.Put(str);

                var got = pile.Get(pp) as string;

                Aver.AreEqual(str, got);
            }
        }
Beispiel #19
0
        public void StringCorrectess(int len, int deleteEvery, int parallel)
        {
            using (var pile = new DefaultPile())
            {
                pile.Start();

                var bag     = new ConcurrentBag <PilePointer>();
                var deleted = 0;
                Parallel.For(0, len, new ParallelOptions {
                    MaxDegreeOfParallelism = parallel
                },
                             (i) =>
                {
                    var str = new string('a', i);

                    PilePointer pp = PilePointer.Invalid;
                    if (i % 2 == 0)
                    {
                        if (bag.TryTake(out pp))
                        {
                            pile.Put(pp, str);
                        }
                    }

                    pp = pile.Put(str, preallocateBlockSize: i + 100);

                    var got = pile.Get(pp) as string;

                    Aver.AreEqual(str, got);

                    if (i % deleteEvery == 0)
                    {
                        PilePointer dp;
                        if (bag.TryTake(out dp))
                        {
                            if (pile.Delete(dp, false))
                            {
                                Interlocked.Increment(ref deleted);
                            }
                        }
                        bag.Add(pp);
                    }
                });

                Console.WriteLine("Deleted {0:n0}", deleted);
            }
        }
Beispiel #20
0
        public void EmptyTest()
        {
            using (var m_pile = new DefaultPile()
            {
                AllocMode = AllocationMode.FavorSpeed
            })
            {
                m_pile.Start();
                var test = m_pile.Put("TEST");
                Console.WriteLine(test);
                Console.WriteLine(m_pile.Get(test));

                m_pile.WaitForCompleteStop();
            }

            Aver.IsTrue(true);
        }
Beispiel #21
0
        public void ByteCorrectess(int len, int deleteEvery, int parallel)
        {
            using (var pile = new DefaultPile(NOPApplication.Instance))
            {
                pile.Start();

                var bag     = new ConcurrentBag <PilePointer>();
                var deleted = 0;
                Parallel.For(0, len, new ParallelOptions {
                    MaxDegreeOfParallelism = parallel
                },
                             (i) =>
                {
                    var original = new byte[len - i];

                    var pp = pile.Put(original);

                    var got = pile.Get(pp) as byte[];

                    Aver.AreEqual(original.Length, got.Length);

                    if (i % deleteEvery == 0)
                    {
                        PilePointer dp;
                        if (bag.TryTake(out dp))
                        {
                            if (pile.Delete(dp, false))
                            {
                                Interlocked.Increment(ref deleted);
                            }
                        }
                        bag.Add(pp);
                    }
                });

                Console.WriteLine("Deleted {0:n0}", deleted);
            }
        }
    public static void Chessboard_ByteArray(bool speed, int durationSec, int payloadSizeMin, int payloadSizeMax, bool isParallel)
    {
      using (var pile = new DefaultPile())
      {
        pile.AllocMode = speed ? AllocationMode.FavorSpeed : AllocationMode.ReuseSpace;
        pile.Start();
        var startTime = DateTime.UtcNow;
        var tasks = new List<Task>();
        for (var t = 0; t < (isParallel ? (System.Environment.ProcessorCount - 1) : 1); t++)
          tasks.Add(Task.Factory.StartNew(() =>
            {
              var list = new List<CheckByteArray>();
              var i = 0;
              var wlc = 0;
              while (true)
              {
                if ((DateTime.UtcNow - startTime).TotalSeconds >= durationSec) break;

                var payloadSize = NFX.ExternalRandomGenerator
                                    .Instance.NextScaledRandomInteger(payloadSizeMin, payloadSizeMax);
                var val = new byte[payloadSize];
                val[0] = (byte)NFX.ExternalRandomGenerator.Instance.NextRandomInteger;
                val[payloadSize - 1] = (byte)NFX.ExternalRandomGenerator.Instance.NextRandomInteger;

                var ptr = pile.Put(val);

                var element = new CheckByteArray(ptr, payloadSize - 1, val[0], val[payloadSize - 1]);
                list.Add(element);

                // delete previous element
                if (list.Count > 1 && i % 2 == 0)
                {
                  ptr = list[list.Count - 2].Ptr;
                  pile.Delete(ptr);
                  list.RemoveAt(list.Count - 2);
                }

                // get several random elements
                if (list.Count > 64 && NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, 100) > 98)
                {
                  var toRead = NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(8, 64);
                  wlc++;
                  if (wlc % 125 == 0)
                    Console.WriteLine("Thread {0} is reading {1} elements, total {2}, Pile objects {3}, Pile segments {4} Pile Bytes {5}"
                      .Args(Thread.CurrentThread.ManagedThreadId, toRead, list.Count, pile.ObjectCount, pile.SegmentCount, pile.AllocatedMemoryBytes));
                  for (var k = 0; k < toRead; k++)
                  {
                    element = list[NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, list.Count - 1)];
                    var buf = pile.Get(element.Ptr) as byte[];
                    Assert.AreEqual(element.FirstByte, buf[0]);
                    Assert.AreEqual(element.LastByte, buf[element.IdxLast]);
                  }
                }

                if (i == Int32.MaxValue)
                  i = 0;
                else
                  i++;

                if (list.Count == Int32.MaxValue)
                  list = new List<CheckByteArray>();
              }

              // total check
              Console.WriteLine("Thread {0} is doing final read of {1} elements, ObjectCount {2}"
                .Args(Thread.CurrentThread.ManagedThreadId, list.Count, pile.ObjectCount));
              foreach (var element in list)
              {
                var buf = pile.Get(element.Ptr) as byte[];
                Assert.AreEqual(element.FirstByte, buf[0]);
                Assert.AreEqual(element.LastByte, buf[element.IdxLast]);
              }
              return;
            }, TaskCreationOptions.LongRunning));
        Task.WaitAll(tasks.ToArray());
      }
    }
Beispiel #23
0
        public static void PutGetDelete_Sequential(int fromSize, int toSize, int fromObjCount, int toObjCount)
        {
            Console.WriteLine("test will take about 1 minute");

            var startTime      = DateTime.Now;
            var objects        = new Dictionary <PilePointer, byte[]>();
            var objectCount    = 0;
            var objectsSumSize = 0;

            using (var pile = new DefaultPile()
            {
                SegmentSize = PileCacheTestCore.SEG_SIZE
            })
            {
                pile.Start();

                var dtStop = DateTime.Now.AddMinutes(1);
                while (dtStop >= DateTime.Now)
                {
                    // insert routine
                    var insertCount = NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(fromObjCount, toObjCount);
                    for (int i = 0; i < insertCount; i++)
                    {
                        var payloadSize = NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(fromSize, toSize);
                        var payload     = new byte[payloadSize];
                        payload[0] = (byte)NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, 255);
                        payload[payloadSize - 1] = (byte)NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, 255);
                        var pp = pile.Put(payload);
                        objects.Add(pp, payload);
                        objectCount++;
                        objectsSumSize += payloadSize;
                    }

                    // get
                    if (objectCount > 0)
                    {
                        var getCount = ExternalRandomGenerator.Instance.NextScaledRandomInteger(5 * fromObjCount, 5 * toObjCount);
                        for (int i = 0; i < getCount; i++)
                        {
                            var objectIdx          = ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, objectCount - 1);
                            var obj                = objects.ElementAt(objectIdx);
                            var objPayloadFromPile = (byte[])pile.Get(obj.Key);
                            Assert.AreEqual(obj.Value[0], objPayloadFromPile[0]);
                            Assert.AreEqual(obj.Value[obj.Value.Length - 1], objPayloadFromPile[obj.Value.Length - 1]);
                            Assert.AreEqual(obj.Value.Length, objPayloadFromPile.Length);
                        }
                    }

                    // delete
                    var deleteCount = ExternalRandomGenerator.Instance.NextScaledRandomInteger(fromObjCount, toObjCount);
                    for (int i = 0; i < deleteCount; i++)
                    {
                        if (objectCount == 0)
                        {
                            break;
                        }

                        var objectIdx = ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, objectCount - 1);
                        var obj       = objects.ElementAt(objectIdx);

                        Assert.IsTrue(pile.Delete(obj.Key));
                        objects.Remove(obj.Key);
                        objectCount--; objectsSumSize -= obj.Value.Length;
                    }
                }
            }
        }
Beispiel #24
0
        public void TestThreadSafety(int cnt, int tcount, int seconds)
        {
            using (var pile = new DefaultPile())
            {
                // pile.SegmentSize = 64 * 1024 * 1024;
                pile.Start();

                var data = new PilePointer[cnt];
                for (var i = 0; i < cnt; i++)
                {
                    data[i] = pile.Put(new byte[0], preallocateBlockSize: Memory.PTR_RAW_BYTE_SIZE + (137 * (i % 17)));
                }

                var lst = new List <Task>();

                long statRead   = 0;
                long statPut    = 0;
                long statDelete = 0;

                var sw         = Stopwatch.StartNew();
                var sd         = DateTime.UtcNow;
                var deleteLock = new object();
                for (var i = 0; i < tcount; i++)
                {
                    lst.Add(Task.Factory.StartNew(() =>
                    {
                        while (true)
                        {
                            var now = DateTime.UtcNow;
                            if ((now - sd).TotalSeconds > seconds)
                            {
                                break;
                            }

                            var it = ExternalRandomGenerator.Instance.NextScaledRandomInteger(10, 100);
                            for (var j = 0; j < it; j++)
                            {
                                var pp = data[ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, cnt - 1)];
                                Aver.IsTrue(pile.Get(pp) is byte[]);
                                Interlocked.Increment(ref statRead);
                            }

                            it = ExternalRandomGenerator.Instance.NextScaledRandomInteger(10, 100);
                            for (var j = 0; j < it; j++)
                            {
                                var pp = data[ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, cnt - 1)];
                                Aver.IsTrue(pile.Put(pp, new byte[ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, 3791)], link: true));
                                Interlocked.Increment(ref statPut);
                            }

                            if (ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, 100) > 50 && Monitor.TryEnter(deleteLock))
                            {
                                try
                                {
                                    var newData  = (PilePointer[])data.Clone();
                                    it           = ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, 10 + (cnt / 2));
                                    var toDelete = new List <PilePointer>();
                                    for (var j = 0; j < it; j++)
                                    {
                                        var idx = ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, cnt - 1);
                                        toDelete.Add(newData[idx]);
                                        newData[idx] = pile.Put(new byte[12], preallocateBlockSize: ExternalRandomGenerator.Instance.NextScaledRandomInteger(24, 1024));
                                    }
                                    data = newData;//atomic;
                                    Thread.Sleep(1000);
                                    foreach (var pp in toDelete)
                                    {
                                        Aver.IsTrue(pile.Delete(pp));
                                        Interlocked.Increment(ref statDelete);
                                    }
                                }
                                finally
                                {
                                    Monitor.Exit(deleteLock);
                                }
                            }
                        }
                    }, TaskCreationOptions.LongRunning));
                }

                Task.WaitAll(lst.ToArray());

                var el = sw.ElapsedMilliseconds;

                Console.WriteLine("Read {0:n0} at {1:n0} ops/sec".Args(statRead, statRead / (el / 1000d)));
                Console.WriteLine("Put {0:n0} at {1:n0} ops/sec".Args(statPut, statPut / (el / 1000d)));
                Console.WriteLine("Deleted {0:n0} at {1:n0} ops/sec".Args(statDelete, statDelete / (el / 1000d)));

                for (var i = 0; i < data.Length; i++)
                {
                    Aver.IsTrue(pile.Delete(data[i]));
                }


                Aver.AreEqual(0, pile.ObjectCount);
                Aver.AreEqual(0, pile.ObjectLinkCount);
                Aver.AreEqual(0, pile.AllocatedMemoryBytes);
            }
        }
Beispiel #25
0
        public void VarSizes_Checkboard(bool isParallel, int cnt, int minSz, int maxSz, bool speed)
        {
            using (var pile = new DefaultPile())
            {
                pile.Start();
                pile.AllocMode = speed ? AllocationMode.FavorSpeed : AllocationMode.ReuseSpace;

                var tasks = new List <Task>();
                for (var t = 0; t < (isParallel? (System.Environment.ProcessorCount - 1) : 1); t++)
                {
                    tasks.Add(
                        Task.Run(() =>
                    {
                        var dict     = new Dictionary <PilePointer, dummy>();
                        var priorOdd = PilePointer.Invalid;
                        for (var i = 0; i < cnt; i++)
                        {
                            var even = (i & 0x01) == 0;
                            var data = new dummy {
                                bin = new byte[12 + NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(minSz, maxSz)]
                            };
                            data.bin.WriteBEInt32(0, ExternalRandomGenerator.Instance.NextRandomInteger);
                            data.bin.WriteBEInt32(data.bin.Length - 4, ExternalRandomGenerator.Instance.NextRandomInteger);
                            var ptr = pile.Put(data);
                            Assert.IsTrue(ptr.Valid);

                            if (even)
                            {
                                dict.Add(ptr, data);
                            }
                            else
                            {
                                if (priorOdd.Valid)
                                {
                                    Assert.IsTrue(pile.Delete(priorOdd));
                                }
                                priorOdd = ptr;
                            }


                            if (i % 1000 == 0)
                            {
                                Console.WriteLine("Thread{0} did {1}; allocated {2} bytes, utilized {3} bytes by {4} objects {5} bytes/obj. ",
                                                  Thread.CurrentThread.ManagedThreadId,
                                                  i,
                                                  pile.AllocatedMemoryBytes,
                                                  pile.UtilizedBytes,
                                                  pile.ObjectCount,
                                                  pile.UtilizedBytes / pile.ObjectCount);
                            }
                        }
                        Console.WriteLine("Thread {0} Population done, now checking the buffers... {1}", Thread.CurrentThread.ManagedThreadId, DateTime.Now);

                        foreach (var entry in dict)
                        {
                            Assert.IsTrue(NFX.IOMiscUtils.MemBufferEquals(entry.Value.bin, (pile.Get(entry.Key) as dummy).bin));
                        }

                        Console.WriteLine("Thread {0} DONE. {1}", Thread.CurrentThread.ManagedThreadId, DateTime.Now);
                    })
                        );//add
                }
                Task.WaitAll(tasks.ToArray());
            }
        }
Beispiel #26
0
        public void VarSizes_Increasing_Random(bool isParallel, int cnt, int minSz, int maxSz, bool speed, bool rnd)
        {
            using (var pile = new DefaultPile())
            {
                pile.Start();
                pile.AllocMode = speed ? AllocationMode.FavorSpeed : AllocationMode.ReuseSpace;

                var sw    = Stopwatch.StartNew();
                var tasks = new List <Task>();
                for (var t = 0; t < (isParallel? (System.Environment.ProcessorCount - 1) : 1); t++)
                {
                    tasks.Add(
                        Task.Run(() =>
                    {
                        var dict     = new Dictionary <PilePointer, dummy>();
                        var lst      = new List <PilePointer>();
                        var priorOdd = PilePointer.Invalid;
                        for (var i = 0; i < cnt; i++)
                        {
                            var buf = new byte[12 +
                                               minSz +
                                               (
                                                   rnd
                                           ? (NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, (int)(maxSz * (i / (double)cnt))))
                                           : (int)(maxSz * (i / (double)cnt))
                                               )
                                      ];
                            var data = new dummy {
                                bin = buf
                            };
                            data.bin.WriteBEInt32(0, ExternalRandomGenerator.Instance.NextRandomInteger);
                            data.bin.WriteBEInt32(data.bin.Length - 4, ExternalRandomGenerator.Instance.NextRandomInteger);
                            var ptr = pile.Put(data);
                            Assert.IsTrue(ptr.Valid);

                            dict.Add(ptr, data);
                            lst.Add(ptr);

                            if (i > cnt / 3)
                            {
                                if (ExternalRandomGenerator.Instance.NextRandomInteger > 0)
                                {
                                    var ri = ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, lst.Count - 1);
                                    var pp = lst[ri];
                                    if (!pp.Valid)
                                    {
                                        continue;
                                    }

                                    Assert.IsTrue(pile.Delete(pp));
                                    dict.Remove(pp);
                                    lst[ri] = PilePointer.Invalid;
                                }
                            }


                            if (i % 1000 == 0)
                            {
                                Console.WriteLine("Thread{0} did {1}; allocated {2} bytes, utilized {3} bytes by {4} objects {5} bytes/obj. ",
                                                  Thread.CurrentThread.ManagedThreadId,
                                                  i,
                                                  pile.AllocatedMemoryBytes,
                                                  pile.UtilizedBytes,
                                                  pile.ObjectCount,
                                                  pile.UtilizedBytes / pile.ObjectCount);
                            }
                        }
                        Console.WriteLine("Thread {0} Population done, now checking the buffers... {1}", Thread.CurrentThread.ManagedThreadId, DateTime.Now);

                        foreach (var entry in dict)
                        {
                            Assert.IsTrue(NFX.IOMiscUtils.MemBufferEquals(entry.Value.bin, (pile.Get(entry.Key) as dummy).bin));
                        }

                        Console.WriteLine("Thread {0} DONE. {1}", Thread.CurrentThread.ManagedThreadId, DateTime.Now);
                    })
                        );//add
                }
                Task.WaitAll(tasks.ToArray());
                var el = sw.ElapsedMilliseconds;
                var gt = cnt * tasks.Count;
                Console.WriteLine("Total objects: {0:n0} in {1:n0} ms at {2:n0} obj/sec".Args(gt, el, gt / (el / 1000d)));
            }
        }
Beispiel #27
0
        public static void DeleteSeveral_TRow(bool speed, int durationSec, int putMin, int putMax, int delFactor, bool isParallel)
        {
            using (var pile = new DefaultPile())
            {
                pile.AllocMode = speed ? AllocationMode.FavorSpeed : AllocationMode.ReuseSpace;
                pile.Start();
                var startTime = DateTime.UtcNow;
                var tasks     = new List <Task>();
                for (var t = 0; t < (isParallel ? (System.Environment.ProcessorCount - 1) : 1); t++)
                {
                    tasks.Add(Task.Factory.StartNew(() =>
                    {
                        var list = new List <CheckTRow>();
                        var wlc  = 0;
                        while (true)
                        {
                            if ((DateTime.UtcNow - startTime).TotalSeconds >= durationSec)
                            {
                                break;
                            }

                            var putCount = NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(putMin, putMax);
                            for (int i = 0; i < putCount; i++)
                            {
                                var val = PersonRow.MakeFake(new GDID());
                                var ptr = pile.Put(val);
                                list.Add(new CheckTRow(ptr, val.ID, val.Address1));
                            }

                            // delete several random elements
                            int delCount = putCount / delFactor;
                            for (int i = 0; i < delCount; i++)
                            {
                                var idx = NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, list.Count - 1);
                                var ptr = list[idx].Ptr;
                                pile.Delete(ptr);
                                list.RemoveAt(idx);
                            }

                            // get several random elements
                            if (list.Count > 64 && NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, 100) > 98)
                            {
                                var toRead = NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(8, 64);
                                wlc++;
                                if (wlc % 125 == 0)
                                {
                                    Console.WriteLine("Thread {0} is reading {1} elements, total {2}"
                                                      .Args(Thread.CurrentThread.ManagedThreadId, toRead, list.Count));
                                }
                                for (var k = 0; k < toRead; k++)
                                {
                                    var element = list[NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, list.Count - 1)];
                                    var buf     = pile.Get(element.Ptr) as PersonRow;
                                    Aver.IsTrue(element.Id.Equals(buf.ID));
                                    Aver.IsTrue(element.Address.Equals(buf.Address1));
                                }
                            }
                        }

                        // total check
                        Console.WriteLine("Thread {0} is doing final read of {1} elements, objectCount {2}"
                                          .Args(Thread.CurrentThread.ManagedThreadId, list.Count, pile.ObjectCount));
                        foreach (var element in list)
                        {
                            var buf = pile.Get(element.Ptr) as PersonRow;
                            Aver.IsTrue(element.Id.Equals(buf.ID));
                            Aver.IsTrue(element.Address.Equals(buf.Address1));
                        }
                        return;
                    }, TaskCreationOptions.LongRunning));
                }
                Task.WaitAll(tasks.ToArray());
            }
        }
Beispiel #28
0
        public static void DeleteSeveral_ByteArray(bool speed, int durationSec, int putMin, int putMax, int delFactor, int payloadSizeMin, int payloadSizeMax, bool isParallel)
        {
            using (var pile = new DefaultPile())
            {
                pile.AllocMode = speed ? AllocationMode.FavorSpeed : AllocationMode.ReuseSpace;
                pile.Start();
                var startTime = DateTime.UtcNow;
                var tasks     = new List <Task>();
                for (var t = 0; t < (isParallel ? (System.Environment.ProcessorCount - 1) : 1); t++)
                {
                    tasks.Add(Task.Factory.StartNew(() =>
                    {
                        var list = new List <CheckByteArray>();
                        var wlc  = 0;
                        while (true)
                        {
                            if ((DateTime.UtcNow - startTime).TotalSeconds >= durationSec)
                            {
                                break;
                            }

                            var putCount = NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(putMin, putMax);
                            for (int i = 0; i < putCount; i++)
                            {
                                var payloadSize = NFX.ExternalRandomGenerator
                                                  .Instance.NextScaledRandomInteger(payloadSizeMin, payloadSizeMax);
                                var val = new byte[payloadSize];
                                val[0]  = (byte)NFX.ExternalRandomGenerator.Instance.NextRandomInteger;
                                val[payloadSize - 1] = (byte)NFX.ExternalRandomGenerator.Instance.NextRandomInteger;

                                var ptr = pile.Put(val);

                                list.Add(new CheckByteArray(ptr, payloadSize - 1, val[0], val[payloadSize - 1]));
                            }

                            int delCount = putCount / delFactor;
                            for (int i = 0; i < delCount; i++)
                            {
                                var idx = NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, list.Count - 1);
                                var ptr = list[idx].Ptr;
                                pile.Delete(ptr);
                                list.RemoveAt(idx);
                            }

                            // get several random elements
                            if (list.Count > 64 && NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, 100) > 98)
                            {
                                var toRead = NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(8, 64);
                                wlc++;
                                if (wlc % 125 == 0)
                                {
                                    Console.WriteLine("Thread {0} is reading {1} elements, total {2}"
                                                      .Args(Thread.CurrentThread.ManagedThreadId, toRead, list.Count));
                                }
                                for (var k = 0; k < toRead; k++)
                                {
                                    var element = list[NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, list.Count - 1)];
                                    var buf     = pile.Get(element.Ptr) as byte[];
                                    Aver.AreEqual(element.FirstByte, buf[0]);
                                    Aver.AreEqual(element.LastByte, buf[element.IdxLast]);
                                }
                            }

                            if (list.Count == Int32.MaxValue)
                            {
                                list = new List <CheckByteArray>();
                            }
                        }

                        // total check
                        Console.WriteLine("Thread {0} is doing final read of {1} elements, objectCount {2}"
                                          .Args(Thread.CurrentThread.ManagedThreadId, list.Count, pile.ObjectCount));
                        foreach (var element in list)
                        {
                            var buf = pile.Get(element.Ptr) as byte[];
                            Aver.AreEqual(element.FirstByte, buf[0]);
                            Aver.AreEqual(element.LastByte, buf[element.IdxLast]);
                        }
                        return;
                    }));
                }
                Task.WaitAll(tasks.ToArray());
            }
        }
Beispiel #29
0
        public static void Put_RandomDelete_ByteArray(int cnt, int durationSec, bool speed, int payloadSizeMin, int payloadSizeMax, int deleteFreq, bool isParallel)
        {
            using (var pile = new DefaultPile())
            {
                pile.AllocMode = speed ? AllocationMode.FavorSpeed : AllocationMode.ReuseSpace;
                pile.Start();
                var startTime = DateTime.UtcNow;
                var tasks     = new List <Task>();
                for (var t = 0; t < (isParallel ? (System.Environment.ProcessorCount - 1) : 1); t++)
                {
                    tasks.Add(Task.Factory.StartNew(() =>
                    {
                        var wlc = 0;
                        while (true)
                        {
                            if ((DateTime.UtcNow - startTime).TotalSeconds >= durationSec)
                            {
                                return;
                            }

                            var dict = new Dictionary <int, CheckByteArray>();


                            Console.WriteLine("Starting a batch of {0}".Args(cnt));
                            for (int i = 0; i < cnt; i++)
                            {
                                var payloadSize      = NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(payloadSizeMin, payloadSizeMax);
                                var val              = new byte[payloadSize];
                                val[0]               = (byte)NFX.ExternalRandomGenerator.Instance.NextRandomInteger;
                                val[payloadSize - 1] = (byte)NFX.ExternalRandomGenerator.Instance.NextRandomInteger;

                                var ptr = pile.Put(val);

                                var element = new CheckByteArray(ptr, payloadSize - 1, val[0], val[payloadSize - 1]);
                                dict.Add(i, element);

                                if (dict.Count > 0 && i % deleteFreq == 0)
                                {
                                    while (true)
                                    {
                                        var idx = i - NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, i);

                                        CheckByteArray stored;
                                        if (dict.TryGetValue(idx, out stored))
                                        {
                                            ptr = stored.Ptr;
                                            pile.Delete(ptr);
                                            dict.Remove(idx);
                                            break;
                                        }
                                    }
                                }

                                if (dict.Count > 16 && NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, 100) > 98)
                                {
                                    var toRead = NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(8, 64);
                                    wlc++;
                                    if (wlc % 125 == 0)
                                    {
                                        Console.WriteLine("Thread {0} is reading {1} elements, total {2}"
                                                          .Args(Thread.CurrentThread.ManagedThreadId, toRead, dict.Count));
                                    }
                                    for (var k = 0; k < toRead; k++)
                                    {
                                        var kvp = dict.Skip(NFX.ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, dict.Count - 1)).First();
                                        var buf = pile.Get(kvp.Value.Ptr) as byte[];
                                        Aver.AreEqual(kvp.Value.FirstByte, buf[0]);
                                        Aver.AreEqual(kvp.Value.LastByte, buf[kvp.Value.IdxLast]);
                                    }
                                }
                            }

                            Console.WriteLine("Thread {0} is doing final read of {1} elements".Args(Thread.CurrentThread.ManagedThreadId, dict.Count));
                            foreach (var kvp in dict)
                            {
                                var buf = pile.Get(kvp.Value.Ptr) as byte[];
                                Aver.AreEqual(kvp.Value.FirstByte, buf[0]);
                                Aver.AreEqual(kvp.Value.LastByte, buf[kvp.Value.IdxLast]);
                            }
                        }
                    }, TaskCreationOptions.LongRunning));
                }
                Task.WaitAll(tasks.ToArray());
            }
        }
        public static void Chessboard_TRow(bool speed, int durationSec, bool isParallel)
        {
            using (var pile = new DefaultPile(NOPApplication.Instance))
            {
                pile.AllocMode = speed ? AllocationMode.FavorSpeed : AllocationMode.ReuseSpace;
                pile.Start();
                var startTime = DateTime.UtcNow;
                var tasks     = new List <Task>();
                for (var t = 0; t < (isParallel ? (System.Environment.ProcessorCount - 1) : 1); t++)
                {
                    tasks.Add(Task.Factory.StartNew(() =>
                    {
                        var list = new List <CheckTRow>();
                        var i    = 0;
                        var wlc  = 0;
                        while (true)
                        {
                            if ((DateTime.UtcNow - startTime).TotalSeconds >= durationSec)
                            {
                                break;
                            }

                            var val = PersonRow.MakeFake(new GDID(0, (ulong)i));

                            var ptr = pile.Put(val);

                            var element = new CheckTRow(ptr, val.ID, val.Address1);
                            list.Add(element);

                            // delete previous element
                            if (list.Count > 1 && i % 2 == 0)
                            {
                                ptr = list[list.Count - 2].Ptr;
                                pile.Delete(ptr);
                                list.RemoveAt(list.Count - 2);
                            }

                            // get several random elements
                            if (list.Count > 64 && Ambient.Random.NextScaledRandomInteger(0, 100) > 98)
                            {
                                var toRead = Ambient.Random.NextScaledRandomInteger(8, 64);
                                wlc++;
                                if (wlc % 125 == 0)
                                {
                                    Console.WriteLine("Thread {0} is reading {1} elements, total {2}, Pile objects {3}, Pile segments {4} Pile Bytes {5}"
                                                      .Args(Thread.CurrentThread.ManagedThreadId, toRead, list.Count, pile.ObjectCount, pile.SegmentCount, pile.AllocatedMemoryBytes));
                                }
                                for (var k = 0; k < toRead; k++)
                                {
                                    element = list[Ambient.Random.NextScaledRandomInteger(0, list.Count - 1)];
                                    var buf = pile.Get(element.Ptr) as PersonRow;
                                    Aver.IsTrue(element.Id.Equals(buf.ID));
                                    Aver.IsTrue(element.Address.Equals(buf.Address1));
                                }
                            }

                            if (i == Int32.MaxValue)
                            {
                                i = 0;
                            }
                            else
                            {
                                i++;
                            }

                            if (list.Count == Int32.MaxValue)
                            {
                                list = new List <CheckTRow>();
                            }
                        }

                        // total check
                        Console.WriteLine("Thread {0} is doing final read of {1} elements, objectCount {2}"
                                          .Args(Thread.CurrentThread.ManagedThreadId, list.Count, pile.ObjectCount));
                        foreach (var element in list)
                        {
                            var buf = pile.Get(element.Ptr) as PersonRow;
                            Aver.IsTrue(element.Id.Equals(buf.ID));
                            Aver.IsTrue(element.Address.Equals(buf.Address1));
                        }
                        return;
                    }, TaskCreationOptions.LongRunning));
                }
                Task.WaitAll(tasks.ToArray());
            }
        }