diff --git a/DRAMSys/traceAnalyzer/scripts/metrics.py b/DRAMSys/traceAnalyzer/scripts/metrics.py
index 2b7302f9..7c76fad7 100644
--- a/DRAMSys/traceAnalyzer/scripts/metrics.py
+++ b/DRAMSys/traceAnalyzer/scripts/metrics.py
@@ -59,7 +59,6 @@ def trans_with_max_response_latency(connection):
     result = cursor.fetchone()
     return result[0]
 
-
 @metric
 def memory_active(connection):
     cursor = connection.cursor()
@@ -68,7 +67,6 @@ def memory_active(connection):
     clk, unit = getClock(connection)
     return (active[0]/clk)
 
-
 @metric
 def memory_total(connection):
     cursor = connection.cursor()
@@ -109,7 +107,6 @@ def memory_idle(connection):
     cursor.execute(query)
     
     query = """
-        
         SELECT
             sum(b.BeginRequest - a.EndResponse) AS idle
         FROM
@@ -134,6 +131,155 @@ def memory_delayed(connection):
     idle = memory_idle(connection)
     return total - active - idle
 
+def check_miss(connection, ID):
+    cursor = connection.cursor()
+    query = """SELECT * FROM phases WHERE PhaseName == "ACT" AND Transact = {};""".format(ID)
+    cursor.execute(query)
+    result = cursor.fetchone()
+    if(result != None) :
+        return True
+    else:
+        return False
+
+def check(connection, gapBegin, gapEnd, b, e):
+    cursor = connection.cursor()
+    query = """SELECT Command FROM Transactions WHERE ID = {};""".format(gapBegin)
+    cursor.execute(query)
+    begin = cursor.fetchone()[0]
+    query = """SELECT Command FROM Transactions WHERE ID = {};""".format(gapEnd)
+    cursor.execute(query)
+    end = cursor.fetchone()[0]
+    return (begin == b and end == e)
+
+@metric
+def delayed_reasons(connection):
+    cursor = connection.cursor()
+
+    # Create a table with sorted Datastrobes:
+    # (RowNum, ID, Begin, End)
+    query = """ DROP TABLE IF EXISTS dataStrobesInOrder; """
+    cursor.execute(query)
+
+    query = """
+    CREATE TEMPORARY TABLE dataStrobesInOrder AS
+    SELECT
+        ROW_NUMBER () OVER (ORDER BY t.DataStrobeBegin) RowNum,
+        t.ID as ID,
+        t.DataStrobeBegin as Begin,
+        t.DataStrobeEnd as End
+
+	FROM 
+	    Transactions t
+	WHERE
+	    t.DataStrobeBegin <> 0 AND
+	    t.DataStrobeEnd <> 0;
+    """
+    cursor.execute(query)
+		
+    # Create a table with phases sorted by BeginResponse:
+    # (RowNum, BeginRequest, EndRequest, BeginResponse, EndResponse, ID)
+    query = """ DROP TABLE IF EXISTS phasesInOrder; """
+    cursor.execute(query)
+
+    query = """
+    CREATE TEMPORARY TABLE phasesInOrder AS
+    SELECT
+        ROW_NUMBER () OVER (ORDER BY q.PhaseBegin) RowNum,
+        p.PhaseBegin AS BeginRequest,
+        p.PhaseEnd   AS EndRequest,
+        q.PhaseBegin AS BeginResponse,
+        q.PhaseEnd   AS EndResponse,
+        p.Transact   AS ID
+	FROM 
+	    Phases p,
+	    Phases q
+	WHERE
+            p.PhaseName = "REQ"
+            AND q.PhaseName = "RESP"
+            AND p.Transact = q.Transact;
+    """
+    cursor.execute(query)
+
+    # Create a table with transaction IDs that start a idle time:
+    # (ID)
+    query = """ DROP TABLE IF EXISTS idleGaps; """
+    cursor.execute(query)
+
+    query = """
+        CREATE TEMPORARY TABLE idleGaps AS
+        SELECT a.ID AS ID
+        FROM phasesInOrder AS a, phasesInOrder AS b
+        WHERE
+         	(a.RowNum)=(b.RowNum-1) AND
+        	b.BeginRequest > a.EndResponse;
+    """
+    cursor.execute(query)
+
+    # Create a table which features IDs that form gaps on the databus:
+    # (gapBeginID, gapEndID)
+    query = """ DROP TABLE IF EXISTS delayedDataBusGaps; """
+    cursor.execute(query)
+    
+    query = """
+    CREATE TEMPORARY TABLE delayedDataBusGaps AS
+        SELECT a.ID AS gapBeginID, b.ID AS gapEndID
+        FROM
+            dataStrobesInOrder a,
+         	dataStrobesInOrder b
+        	
+         WHERE 
+            (a.RowNum) = (b.RowNum-1) AND
+         	b.Begin > a.End AND
+        	a.ID not in (SELECT ID FROM idleGaps);
+    """
+    cursor.execute(query)
+
+    query = """ SELECT * FROM delayedDataBusGaps; """;
+    cursor.execute(query)
+
+    records = cursor.fetchall()
+
+    RR_Miss = 0
+    WW_Miss = 0
+    RW_Hit  = 0
+    RW_Miss = 0
+    WR_Hit  = 0
+    WR_Miss = 0 
+    e = 0
+    result = ""
+
+    for row in records:
+        gapBegin = row[0]
+        gapEnd   = row[1]
+
+        if  (check(connection, gapBegin, gapEnd, "R", "R") and check_miss(connection, gapEnd)):
+            RR_Miss += 1
+        elif(check(connection, gapBegin, gapEnd, "W", "W") and check_miss(connection, gapEnd)):
+            WW_Miss += 1
+        elif(check(connection, gapBegin, gapEnd, "R", "W") and (not check_miss(connection, gapEnd))):
+            RW_Hit += 1
+        elif(check(connection, gapBegin, gapEnd, "R", "W") and check_miss(connection, gapEnd)):
+            RW_Miss += 1
+        elif(check(connection, gapBegin, gapEnd, "W", "R") and (not check_miss(connection, gapEnd))):
+            WR_Hit += 1
+        elif(check(connection, gapBegin, gapEnd, "W", "R") and check_miss(connection, gapEnd)):
+            WR_Miss += 1
+        else:
+            print ("ERROR: This should not happen")
+            exit(-1)
+
+    total = RR_Miss + WW_Miss + RW_Hit + RW_Miss + WR_Hit + WR_Miss
+
+    RR_Miss /= total
+    WW_Miss /= total
+    RW_Hit  /= total
+    RW_Miss /= total
+    WR_Hit  /= total
+    WR_Miss /= total 
+
+    result = "RRM: {}, WWM: {}, RWH: {}, RWM: {}, WRH: {}, WRM: {}".format(RR_Miss, WW_Miss, RW_Hit, RW_Miss, WR_Hit, WR_Miss);
+    return result
+
 @metric
 def memory_idle_in_percent(connection):
     total = memory_total(connection)