Merge pull request swiftlang#76 from graydon/run-cperf-debugging-sep-30

[run_cperf] More debugging experiments.

Author: graydon

run_cperf

@@ -98,7 +98,7 @@ def main():
             args.output.close()
             shutil.copyfile(o, p)
 
-    common.check_execute(['find', workspace, '-ls'])
+    common.check_execute(['find', os.getcwd(), '-ls'])
 
     return regressions
 
@@ -219,7 +219,7 @@ def get_stats_dir(instance, variant):
 
 
 def get_actual_config_and_flags(config, stats):
-    flags = ("-stats-output-dir %s" % stats)
+    flags = ("-v -j 1 -num-threads 1 -stats-output-dir '%s'" % stats)
     # Handle as a pseudo-configs
     if config == 'wmo-onone':
         flags += ' -wmo -Onone '
@@ -247,6 +247,7 @@ def execute_runner(instance, workspace, configs, args):
         runner_command = [
             './runner.py',
             '--swiftc', swiftc_path,
+            '--verbose',
             '--projects', projects,
             '--build-config', config,
             '--swift-version', '3',