--- old/src/share/classes/java/net/SocketOutputStream.java	2012-11-13 10:47:57.000000000 +0100
+++ new/src/share/classes/java/net/SocketOutputStream.java	2012-11-13 10:47:56.000000000 +0100
@@ -30,6 +30,9 @@
 import java.io.IOException;
 import java.nio.channels.FileChannel;
 
+import sun.misc.IoTrace;
+import sun.misc.IoTraceContext;
+
 /**
  * This stream extends FileOutputStream to implement a
  * SocketOutputStream. Note that this class should <b>NOT</b> be
@@ -104,9 +107,12 @@
             throw new ArrayIndexOutOfBoundsException();
         }
 
+        IoTraceContext traceContext = IoTrace.socketWriteBegin(impl.address, impl.port);
+        int bytesWritten = 0;
         FileDescriptor fd = impl.acquireFD();
         try {
             socketWrite0(fd, b, off, len);
+            bytesWritten = len;
         } catch (SocketException se) {
             if (se instanceof sun.net.ConnectionResetException) {
                 impl.setConnectionResetPending();
@@ -119,6 +125,7 @@
             }
         } finally {
             impl.releaseFD();
+            IoTrace.socketWriteEnd(traceContext, bytesWritten);
         }
     }