[Swarming] Presort tests - slowest first.

tools/testrunner/local/execution.py

 # Copyright 2012 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
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 54 matching lines @@
   def __init__(self, suites, progress_indicator, context):
     self.datapath = os.path.join("out", "testrunner_data")
     self.perf_data_manager = perfdata.PerfDataManager(self.datapath)
     self.perfdata = self.perf_data_manager.GetStore(context.arch, context.mode)
     self.perf_failures = False
     self.printed_allocations = False
     self.tests = [ t for s in suites for t in s.tests ]
     if not context.no_sorting:
       for t in self.tests:
         t.duration = self.perfdata.FetchPerfData(t) or 1.0
+      slow_key = lambda t: statusfile.IsSlow(t.outcomes)
+      self.tests.sort(key=slow_key, reverse=True)
       self.tests.sort(key=lambda t: t.duration, reverse=True)
     self._CommonInit(suites, progress_indicator, context)
 
   def _CommonInit(self, suites, progress_indicator, context):
     self.total = 0
     for s in suites:
       for t in s.tests:
         t.id = self.total
         self.total += 1
     self.indicator = progress_indicator
@@ skipping 202 matching lines @@
            test.suite.GetFlagsForTestCase(test, self.context) +
            self.context.extra_flags)
     return cmd
 
 
 class BreakNowException(Exception):
   def __init__(self, value):
     self.value = value
   def __str__(self):
     return repr(self.value)