diff --git a/PartitionFileStorageTest/Program.cs b/PartitionFileStorageTest/Program.cs
index 1d953bf..6b8f88f 100644
--- a/PartitionFileStorageTest/Program.cs
+++ b/PartitionFileStorageTest/Program.cs
@@ -9,7 +9,8 @@ namespace PartitionFileStorageTest
 {
     internal class Program
     {
-        const int PAIRS_COUNT = 200_000_000;
+//        const int PAIRS_COUNT = 200_000_000;
+        const int PAIRS_COUNT = 200_000;
 
         private class Metadata
         {
@@ -75,7 +76,6 @@ namespace PartitionFileStorageTest
             var testKeys1 = new List<ulong>();
             var testKeys2 = new List<ulong>();
             var testData = new Dictionary<ulong, HashSet<ulong>>();
-            var total = 0L;
 
             var insertCount = (int)(0.7 * pairs.Count);
 
@@ -86,7 +86,6 @@ namespace PartitionFileStorageTest
                 if (testData.ContainsKey(key) == false) testData[key] = new HashSet<ulong>();
                 testData[key].Add(val);
                 storePart.Store(key, val);
-                total++;
                 if (key % 717 == 0)
                 {
                     testKeys1.Add(key);
@@ -98,7 +97,7 @@ namespace PartitionFileStorageTest
             }
 
             sw.Stop();
-            Log.Info($"Fill journal: {sw.ElapsedMilliseconds}ms");
+            Log.Info($"Fill journal: {sw.ElapsedMilliseconds}ms. Records writed: {storePart.TotalRecords}");
             sw.Restart();
             storePart.CompleteAdding();
             storePart.Compress();
@@ -116,12 +115,11 @@ namespace PartitionFileStorageTest
             {
                 var key = pairs[i].Item1;
                 var val = pairs[i].Item2;
-                total++;
                 if (testData.ContainsKey(key) == false) testData[key] = new HashSet<ulong>();
                 testData[key].Add(val);
                 merger.Store(key, val);
             }
-            Log.Info($"Merge journal filled: {sw.ElapsedMilliseconds}ms. Total data count: {total}");
+            Log.Info($"Merge journal filled: {sw.ElapsedMilliseconds}ms. New records merged: {merger.TotalRecords}");
             merger.Compress(); // auto reindex
             sw.Stop();
             Log.Info($"Compress after merge: {sw.ElapsedMilliseconds}ms");
@@ -396,8 +394,10 @@ namespace PartitionFileStorageTest
             // FastTest(options);
             FSUtils.CleanAndTestFolder(root);
             FullStoreTest(options, pairs);
+            /*
             FSUtils.CleanAndTestFolder(root);
             FullStoreMultithreadTest(optionsMultiThread, pairs);
+            */
             Console.ReadKey();
         }
     }
diff --git a/ZeroLevel/Services/PartitionStorage/Interfaces/IStorePartitionBuilder.cs b/ZeroLevel/Services/PartitionStorage/Interfaces/IStorePartitionBuilder.cs
index 2310a23..2a86373 100644
--- a/ZeroLevel/Services/PartitionStorage/Interfaces/IStorePartitionBuilder.cs
+++ b/ZeroLevel/Services/PartitionStorage/Interfaces/IStorePartitionBuilder.cs
@@ -11,6 +11,10 @@ namespace ZeroLevel.Services.PartitionStorage
     public interface IStorePartitionBuilder<TKey, TInput, TValue>
         : IStorePartitionBase<TKey, TInput, TValue>
     {
+        long TotalRecords
+        {
+            get;
+        }
         IEnumerable<StorePartitionKeyValueSearchResult<TKey, TInput>> Iterate();
         /// <summary>
         /// Writing a key-value pair
diff --git a/ZeroLevel/Services/PartitionStorage/Interfaces/IStorePartitionMergeBuilder.cs b/ZeroLevel/Services/PartitionStorage/Interfaces/IStorePartitionMergeBuilder.cs
index 2568a83..95c72a0 100644
--- a/ZeroLevel/Services/PartitionStorage/Interfaces/IStorePartitionMergeBuilder.cs
+++ b/ZeroLevel/Services/PartitionStorage/Interfaces/IStorePartitionMergeBuilder.cs
@@ -9,6 +9,10 @@
     public interface IStorePartitionMergeBuilder<TKey, TInput, TValue>
        : IStorePartitionBase<TKey, TInput, TValue>
     {
+        long TotalRecords
+        {
+            get;
+        }
         /// <summary>
         /// Writing a key-value pair
         /// </summary>
diff --git a/ZeroLevel/Services/PartitionStorage/Partition/StoreMergePartitionAccessor.cs b/ZeroLevel/Services/PartitionStorage/Partition/StoreMergePartitionAccessor.cs
index 5ccdb03..4fa445b 100644
--- a/ZeroLevel/Services/PartitionStorage/Partition/StoreMergePartitionAccessor.cs
+++ b/ZeroLevel/Services/PartitionStorage/Partition/StoreMergePartitionAccessor.cs
@@ -24,6 +24,11 @@ namespace ZeroLevel.Services.PartitionStorage
         private readonly Func<MemoryStreamReader, TKey> _keyDeserializer;
         private readonly Func<MemoryStreamReader, TValue> _valueDeserializer;
 
+        public long TotalRecords
+        {
+            get { return _temporaryAccessor.TotalRecords; }
+        }
+
         /// <summary>
         /// Write catalog
         /// </summary>
diff --git a/ZeroLevel/Services/PartitionStorage/Partition/StorePartitionBuilder.cs b/ZeroLevel/Services/PartitionStorage/Partition/StorePartitionBuilder.cs
index 5674c1f..95c89da 100644
--- a/ZeroLevel/Services/PartitionStorage/Partition/StorePartitionBuilder.cs
+++ b/ZeroLevel/Services/PartitionStorage/Partition/StorePartitionBuilder.cs
@@ -2,7 +2,6 @@
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
-using System.Runtime.CompilerServices;
 using System.Threading;
 using System.Threading.Tasks;
 using ZeroLevel.Services.PartitionStorage.Interfaces;
@@ -16,6 +15,10 @@ namespace ZeroLevel.Services.PartitionStorage
     {
         private readonly Action<TKey, TInput> _storeMethod;
 
+        private long _totalRecords = 0;
+
+        public long TotalRecords { get { return _totalRecords; } }
+
         public StorePartitionBuilder(StoreOptions<TKey, TInput, TValue, TMeta> options,
             TMeta info,
             IStoreSerializer<TKey, TInput, TValue> serializer)
@@ -38,11 +41,14 @@ namespace ZeroLevel.Services.PartitionStorage
         public void Store(TKey key, TInput value)
         {
             _storeMethod.Invoke(key, value);
+            Interlocked.Increment(ref _totalRecords);
         }
+
         public void CompleteAdding()
         {
             CloseWriteStreams();
         }
+
         public void Compress()
         {
             var files = Directory.GetFiles(_catalog);
diff --git a/ZeroLevel/ZeroLevel.csproj b/ZeroLevel/ZeroLevel.csproj
index 1a91375..e14b011 100644
--- a/ZeroLevel/ZeroLevel.csproj
+++ b/ZeroLevel/ZeroLevel.csproj
@@ -6,7 +6,7 @@
 </Description>
     <Authors>ogoun</Authors>
     <Company>ogoun</Company>
-    <AssemblyVersion>3.3.8.3</AssemblyVersion>
+    <AssemblyVersion>3.3.8.4</AssemblyVersion>
     <PackageReleaseNotes>PartitionStorage. ThreadSafeWriting option</PackageReleaseNotes>
     <PackageProjectUrl>https://github.com/ogoun/Zero/wiki</PackageProjectUrl>
     <Copyright>Copyright Ogoun 2022</Copyright>
@@ -14,8 +14,8 @@
     <PackageIconUrl></PackageIconUrl>
     <RepositoryUrl>https://github.com/ogoun/Zero</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
-    <Version>3.3.8.3</Version>
-    <FileVersion>3.3.8.3</FileVersion>
+    <Version>3.3.8.4</Version>
+    <FileVersion>3.3.8.4</FileVersion>
     <Platforms>AnyCPU;x64;x86</Platforms>
     <PackageIcon>zero.png</PackageIcon>
     <DebugType>full</DebugType>