Enhance gc-nvp-trace-processor.py:

tools/gc-nvp-trace-processor.py

 #!/usr/bin/env python
 #
 # Copyright 2010 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 198 matching lines @@
     script = generate_script_and_datafile(plot, trace, '~datafile', outfilename)
     print 'Plotting %s...' % outfilename
     gnuplot(script)
 
   return charts
 
 def reclaimed_bytes(row):
   return row['total_size_before'] - row['total_size_after']
 
 def other_scope(r):
-  return r['pause'] - r['mark'] - r['sweep'] - r['compact']
+  if r['gc'] == 's':
+    # there is no 'other' scope for scavenging collections.
+    return 0
+  return r['pause'] - r['mark'] - r['sweep'] - r['compact'] - r['external']
+
+def scavenge_scope(r):
+  if r['gc'] == 's':
+    return r['pause'] - r['external']
+  return 0
 
 plots = [
   [
     Set('style fill solid 0.5 noborder'),
     Set('style histogram rowstacked'),
     Set('style data histograms'),
-    Plot(Item('Marking', 'mark', lc = 'purple'),
+    Plot(Item('Scavenge', scavenge_scope, lc = 'green'),
+         Item('Marking', 'mark', lc = 'purple'),
          Item('Sweep', 'sweep', lc = 'blue'),
          Item('Compaction', 'compact', lc = 'red'),
+         Item('External', 'external', lc = '#489D43'),
          Item('Other', other_scope, lc = 'grey'))
   ],
   [
     Set('style histogram rowstacked'),
     Set('style data histograms'),
     Plot(Item('Heap Size (before GC)', 'total_size_before', x1y2,
               fs = 'solid 0.4 noborder',
               lc = 'green'),
          Item('Total holes (after GC)', 'holes_size_before', x1y2,
               fs = 'solid 0.4 noborder',
@@ skipping 68 matching lines @@
     out.write('<table>')
     out.write('<tr><td>Phase</td><td>Count</td><td>Time (ms)</td>')
     out.write('<td>Max</td><td>Avg</td></tr>')
     stats(out, 'Total in GC', trace, 'pause')
     stats(out, 'Scavenge', scavenges, 'pause')
     stats(out, 'MarkSweep', marksweeps, 'pause')
     stats(out, 'MarkCompact', markcompacts, 'pause')
     stats(out, 'Mark', filter(lambda r: r['mark'] != 0, trace), 'mark')
     stats(out, 'Sweep', filter(lambda r: r['sweep'] != 0, trace), 'sweep')
     stats(out, 'Compact', filter(lambda r: r['compact'] != 0, trace), 'compact')
+    stats(out,
+          'External',
+          filter(lambda r: r['external'] != 0, trace),
+          'external')
     out.write('</table>')
     for chart in charts:
       out.write('<img src="%s">' % chart)
       out.write('</body></html>')
 
   print "%s generated." % (filename + '.html')
 
 if len(sys.argv) != 2:
   print "Usage: %s <GC-trace-filename>" % sys.argv[0]
   sys.exit(1)
 
 process_trace(sys.argv[1])