--- /usr/libexec/perf-core/scripts/python/netdev-times.py	2014-06-07 21:33:33.000000000 -0400
+++ /home/wcohen/libexec/perf-core/scripts/python/netdev-times.py	2014-06-13 09:46:03.809403435 -0400
@@ -23,7 +23,7 @@
 net_rx_dic = {}; # key is cpu and value include time of NET_RX softirq-entry
 		 # and a list which stacks receive
 receive_hunk_list = []; # a list which include a sequence of receive events
-rx_skb_list = []; # received packet list for matching
+rx_skb_list = {}; # received packet list for matching
 		       # skb_copy_datagram_iovec
 
 buffer_budget = 65536; # the budget of rx_skb_list, tx_queue_list and
@@ -387,9 +387,9 @@
 			    'event_t':time, 'skbaddr':skbaddr, 'len':skblen}
 		event_list = net_rx_dic[cpu]['event_list']
 		event_list.append(rec_data)
-		rx_skb_list.insert(0, rec_data)
-		if len(rx_skb_list) > buffer_budget:
-			rx_skb_list.pop()
+		if len(rx_skb_list) < buffer_budget:
+                        rx_skb_list[skbaddr] = rec_data
+                else:
 			of_count_rx_skb_list += 1
 
 def handle_net_dev_queue(event_info):
@@ -435,13 +435,11 @@
 			tx_free_list.append(skb)
 			del tx_xmit_list[i]
 			return
-	for i in range(len(rx_skb_list)):
-		rec_data = rx_skb_list[i]
-		if rec_data['skbaddr'] == skbaddr:
-			rec_data.update({'handle':"kfree_skb",
-					'comm':comm, 'pid':pid, 'comm_t':time})
-			del rx_skb_list[i]
-			return
+	if skbaddr in rx_skb_list.keys():
+                rx_skb_list[skbaddr].update({'handle':"kfree_skb",
+                                 'comm':comm, 'pid':pid, 'comm_t':time})
+                del rx_skb_list[skbaddr]
+                return
 
 def handle_consume_skb(event_info):
 	(name, context, cpu, time, pid, comm, skbaddr) = event_info
@@ -455,10 +453,8 @@
 
 def handle_skb_copy_datagram_iovec(event_info):
 	(name, context, cpu, time, pid, comm, skbaddr, skblen) = event_info
-	for i in range(len(rx_skb_list)):
-		rec_data = rx_skb_list[i]
-		if skbaddr == rec_data['skbaddr']:
-			rec_data.update({'handle':"skb_copy_datagram_iovec",
-					'comm':comm, 'pid':pid, 'comm_t':time})
-			del rx_skb_list[i]
-			return
+	if skbaddr in rx_skb_list.keys():
+		rx_skb_list[skbaddr].update({'handle':"skb_copy_datagram_iovec",
+				'comm':comm, 'pid':pid, 'comm_t':time})
+		del rx_skb_list[skbaddr]
+		return