diff --git a/Framework/NethereumWorkflow/BlockUtils/BlockCache.cs b/Framework/NethereumWorkflow/BlockUtils/BlockCache.cs
index 19549634..c902eda0 100644
--- a/Framework/NethereumWorkflow/BlockUtils/BlockCache.cs
+++ b/Framework/NethereumWorkflow/BlockUtils/BlockCache.cs
@@ -35,5 +35,7 @@
             if (!entries.TryGetValue(number, out BlockTimeEntry? value)) return null;
             return value;
         }
+
+        public int Size { get { return entries.Count; } }
     }
 }
diff --git a/Framework/NethereumWorkflow/BlockUtils/BlockTimeFinder.cs b/Framework/NethereumWorkflow/BlockUtils/BlockTimeFinder.cs
index f2a89c2a..3678cea8 100644
--- a/Framework/NethereumWorkflow/BlockUtils/BlockTimeFinder.cs
+++ b/Framework/NethereumWorkflow/BlockUtils/BlockTimeFinder.cs
@@ -24,7 +24,7 @@ namespace NethereumWorkflow.BlockUtils
             if (moment <= bounds.Genesis.Utc) return null;
             if (moment >= bounds.Current.Utc) return bounds.Current.BlockNumber;
 
-            return Search(bounds.Genesis, bounds.Current, moment, HighestBeforeSelector);
+            return Log(() => Search(bounds.Genesis, bounds.Current, moment, HighestBeforeSelector));
         }
 
         public ulong? GetLowestBlockNumberAfter(DateTime moment)
@@ -33,7 +33,16 @@ namespace NethereumWorkflow.BlockUtils
             if (moment >= bounds.Current.Utc) return null;
             if (moment <= bounds.Genesis.Utc) return bounds.Genesis.BlockNumber;
 
-            return Search(bounds.Genesis, bounds.Current, moment, LowestAfterSelector);
+            return Log(()=> Search(bounds.Genesis, bounds.Current, moment, LowestAfterSelector)); ;
+        }
+
+        private ulong Log(Func<ulong> operation)
+        {
+            var sw = Stopwatch.Begin(log, nameof(BlockTimeFinder));
+            var result = operation();
+            sw.End($"(Cache size: {cache.Size})");
+
+            return result;
         }
 
         private ulong Search(BlockTimeEntry lower, BlockTimeEntry upper, DateTime target, Func<DateTime, BlockTimeEntry, bool> isWhatIwant)