Iteratively increase sample size for good/bad classification.

scripts/slave/recipe_modules/bisect_tester/api.py

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import json
 import os
 
 from recipe_engine import recipe_api
 from . import perf_test
 
@@ skipping 13 matching lines @@
     if buildername and buildername.endswith('_bisect') and cr_config:
       return True # pragma: no cover
     return False
 
   def load_config_from_dict(self, bisect_config):
     """Copies the required configuration keys to a new dict."""
     return {
         'command': bisect_config['command'],
         'metric': bisect_config.get('metric'),
         'repeat_count': int(bisect_config.get('repeat_count', 20)),
-        'max_time_minutes': float(bisect_config.get('max_time_minutes', 25)),
+        # The default is to NOT timeout, hence 0.
+        'max_time_minutes': float(bisect_config.get('max_time_minutes', 0)),
         'test_type': bisect_config.get('test_type', 'perf')
     }
 
   def run_test(self, test_config, **kwargs):
     """Exposes perf tests implementation."""
     return perf_test.run_perf_test(self, test_config, **kwargs)
 
   def digest_run_results(self, run_results, retcodes, cfg):
     # TODO(qyearsley): Change this to not use cfg or retcodes and just
     # return values (or error) regardless of test_type.
@@ skipping 37 matching lines @@
           self.m.properties['mastername'],
           self.m.properties['buildername'],
           self.m.properties['buildnumber'])
     local_save_results = self.m.python('saving url to temp file',
                                        self.resource('put_temp.py'),
                                        stdout=self.m.raw_io.output(),
                                        stdin=self.m.raw_io.input(url))
     local_file = local_save_results.stdout.splitlines()[0].strip()
     self.m.gsutil.upload(
         local_file, BUCKET, gs_filename, name=str(gs_filename))