diff --git a/realm_cli/AppDbContext.cs b/realm_cli/AppDbContext.cs
index b942548..95bfe4d 100644
--- a/realm_cli/AppDbContext.cs
+++ b/realm_cli/AppDbContext.cs
@@ -12,7 +12,7 @@ public class AppDbContext: DbContext
     public AppDbContext()
     {
         SQLitePCL.Batteries_V2.Init();
-        this.Database.EnsureCreated();
+        //this.Database.EnsureCreated();
     }
 
     protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
diff --git a/realm_cli/Program.cs b/realm_cli/Program.cs
index 9b9111e..846df22 100644
--- a/realm_cli/Program.cs
+++ b/realm_cli/Program.cs
@@ -4,6 +4,9 @@ using System.Collections.Concurrent;
 using System.ComponentModel;
 using System.Diagnostics;
 using Microsoft.Data.Sqlite;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Infrastructure.Internal;
 using MongoDB.Bson;
 using MongoDB.Bson.Serialization.Serializers;
 using realm_cli;
@@ -202,7 +205,7 @@ async Task<LiveData> QueryLiveData()
     Console.WriteLine($"{(DateTime.Now - b).TotalSeconds} secs");
     return null;
 }
-
+/*
 using (var db = GetDB())
 {
     db.Write(() =>
@@ -210,7 +213,7 @@ using (var db = GetDB())
         db.Add(new LiveDataMsg() {Id = "live", Uts = DateTimeOffset.Now, Text = "begin"}, update:true);
     });    
 }
-
+*/
 
 
 //var t1 = Task.Run(() => Produce());
@@ -219,23 +222,28 @@ using (var db = GetDB())
 //var t2 = ConsumeAsync();
 //Task.WaitAll(t1, t2);
 
+using (var ctx = new AppDbContext())
+{
+    ctx.Database.EnsureCreated();
+}
+
 var b = DateTime.Now;
 
-using (var ctx = new AppDbContext())
+var builder = new DbContextOptionsBuilder<AppDbContext>();
+
 {
-    for (var i = 1; i != 1000; ++i)
+    for (var i = 1; i != 10000; ++i)
     {
-
-        //{
+        using (var ctx = new AppDbContext())
+        {
             var s = new LiveDataState {ItemId = i, EcuId = (ushort) (i + 1), Value = (float) (i * 1.0)};
             ctx.Add(s);
 
             //Console.WriteLine(ctx.Entry<LiveDataState>(s).Entity.ItemId);
-            //ctx.SaveChanges();
-        //}
-        
+            ctx.SaveChanges();
+        }
+        //ctx.SaveChanges();    
     }
-    ctx.SaveChanges();
 }
 
 Console.WriteLine($"{(DateTime.Now - b).TotalSeconds}");