Only account for actual time spend in call path calculation.

The call path section of the profile now starts with information on the percentage of the ticks which does not contain call path information.

Added tick count to the call path part as well.
Review URL: http://codereview.chromium.org/28022

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1338 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

tools/tickprocessor.py

@@ -386,9 +386,15 @@ class TickProcessor(object):
         total_stacks += count
     all_stacks_items = all_stacks.items();
     all_stacks_items.sort(key = itemgetter(1), reverse=True)
+    missing_percentage = (self.total_number_of_ticks - total_stacks) * 100.0 / self.total_number_of_ticks
+    print('  %(ticks)5d  %(total)5.1f%%  <no call path information>' % {
+      'ticks' : self.total_number_of_ticks - total_stacks,
+      'total' : missing_percentage
+    })
     for stack, count in all_stacks_items:
-      total_percentage = count * 100.0 / total_stacks
-      print('  %(total)5.1f%%  %(call_path)s' % {
+      total_percentage = count * 100.0 / self.total_number_of_ticks
+      print('  %(ticks)5d  %(total)5.1f%%  %(call_path)s' % {
+        'ticks' : count,
         'total' : total_percentage,
         'call_path' : stack[0] + '  <-  ' + stack[1]
       })