From 179a71a4374c831b43690c1c5135e03f8d049aa3 Mon Sep 17 00:00:00 2001
From: Srinivasan Ramasubramanian <srini@bigswitch.com>
Date: Thu, 22 Dec 2011 16:01:00 -0800
Subject: [PATCH] Updates to print messages to log.info when packet-in
processing time exceeds 0.5s.
---
.../core/OFMessageFilterManager.java | 2 +-
.../core/internal/Controller.java | 12 +++++++++++-
2 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/src/main/java/net/floodlightcontroller/core/OFMessageFilterManager.java b/src/main/java/net/floodlightcontroller/core/OFMessageFilterManager.java
index c2dbd7eb0..d1e835de1 100644
--- a/src/main/java/net/floodlightcontroller/core/OFMessageFilterManager.java
+++ b/src/main/java/net/floodlightcontroller/core/OFMessageFilterManager.java
@@ -563,7 +563,7 @@ public class OFMessageFilterManager implements IOFMessageListener {
return sb.toString().getBytes();
}
- private String getStringFromEthernetPacket(Ethernet eth) {
+ public String getStringFromEthernetPacket(Ethernet eth) {
StringBuffer sb = new StringBuffer("\n");
diff --git a/src/main/java/net/floodlightcontroller/core/internal/Controller.java b/src/main/java/net/floodlightcontroller/core/internal/Controller.java
index c44b43503..14e02f66d 100644
--- a/src/main/java/net/floodlightcontroller/core/internal/Controller.java
+++ b/src/main/java/net/floodlightcontroller/core/internal/Controller.java
@@ -723,6 +723,8 @@ public class Controller
throws IOException {
Ethernet eth = null;
+ long startTime = System.nanoTime();
+
switch (m.getType()) {
case PACKET_IN:
OFPacketIn pi = (OFPacketIn)m;
@@ -785,8 +787,16 @@ public class Controller
} else {
log.error("Unhandled OF Message: {} from {}", m, sw);
}
- break;
+
+ long processingTime = System.nanoTime() - startTime;
+ if (processingTime > (long)500000000) { // processing takes more than half a second
+ log.info("--**--**-- Time to process packet-in: {} ns", processingTime);
+ if (eth!= null)
+ log.info("{}", messageFilterManager.getStringFromEthernetPacket(eth));
+ log.info("--**--**-- ");
+ }
}
+
}
/**
--
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