diff --git a/DRAMSys/traceAnalyzer/scripts/metrics.py b/DRAMSys/traceAnalyzer/scripts/metrics.py
index cc4e8e5e..c3a9f50f 100644
--- a/DRAMSys/traceAnalyzer/scripts/metrics.py
+++ b/DRAMSys/traceAnalyzer/scripts/metrics.py
@@ -90,6 +90,13 @@ def memory_idle(connection):
         return (idle[0]/clk)
 
 
+@metric 
+def memory_delayed(connection):
+    total = memory_total(connection)
+    active = memory_active(connection)
+    idle = memory_idle(connection)
+    return total - active - idle
+
 @metric
 def memory_utilisation_percent_new(connection):
     total = memory_total(connection)