The test is 15% flaky:
https://stainless.corp.google.com/search?view=list&first_date=2018-11-21&last_date=2018-12-19&test=video_PlaybackPerf.vp9.4k&build=R73&board=%5Enyan_big%24&status=GOOD&status=WARN&status=FAIL&status=ERROR&exclude_cts=false&exclude_not_run=false&exclude_non_release=true&exclude_au=true&exclude_acts=true&exclude_retried=false&exclude_non_production=false
11420.0.0:
http://ubercautotest.corp.google.com/tko/retrieve_logs.cgi?job=/results/268092474-chromeos-test/chromeos4-row9-rack4-host9
12/17 17:33:26.583 DEBUG| test:0381| Test failed due to Command <head -n 1 /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor> failed, rc=1, Command returned non-zero exit status
* Command:
head -n 1 /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor
Exit status: 1
Duration: 0.0176389217377
stderr:
head: cannot open '/sys/devices/system/cpu/cpu3/cpufreq/scaling_governor' for reading: No such file or directory. Exception log follows the after_iteration_hooks.
12/17 17:33:26.584 DEBUG| test:0386| Starting after_iteration_hooks for video_PlaybackPerf
12/17 17:33:26.586 DEBUG| base_sysinfo:0124| Loggable saves logs to /usr/local/autotest/results/default/video_PlaybackPerf/sysinfo/iteration.1/interrupts.after
12/17 17:33:26.587 DEBUG| utils:0219| Running 'mkdir -p /usr/local/autotest/results/default/video_PlaybackPerf/sysinfo/iteration.1/var/spool'
12/17 17:33:26.587 DEBUG| global_hooks:0056| 'mkdir -p /usr/local/autotest/results/default/video_PlaybackPerf/sysinfo/iteration.1/var/spool'
12/17 17:33:26.614 DEBUG| utils:0219| Running 'rsync --no-perms --chmod=ugo+r -a --safe-links --exclude=/crash/**autoserv* --exclude=/crash/*.core /var/spool/crash /usr/local/autotest/results/default/video_PlaybackPerf/sysinfo/iteration.1/var/spool'
12/17 17:33:26.615 DEBUG| global_hooks:0056| 'rsync --no-perms --chmod=ugo+r -a --safe-links --exclude=/crash/**autoserv* --exclude=/crash/*.core /var/spool/crash /usr/local/autotest/results/default/video_PlaybackPerf/sysinfo/iteration.1/var/spool'
12/17 17:33:26.655 DEBUG| utils:0219| Running 'rm -rf /var/spool/crash/*'
12/17 17:33:26.656 DEBUG| global_hooks:0056| 'rm -rf /var/spool/crash/*'
12/17 17:33:27.086 DEBUG| base_sysinfo:0124| Loggable saves logs to /usr/local/autotest/results/default/video_PlaybackPerf/sysinfo/iteration.1/meminfo.after
12/17 17:33:27.088 DEBUG| base_sysinfo:0124| Loggable saves logs to /usr/local/autotest/results/default/video_PlaybackPerf/sysinfo/iteration.1/slabinfo.after
12/17 17:33:27.089 DEBUG| base_sysinfo:0124| Loggable saves logs to /usr/local/autotest/results/default/video_PlaybackPerf/sysinfo/iteration.1/schedstat.after
12/17 17:33:27.089 DEBUG| utils:0219| Running 'logger "autotest finished iteration /usr/local/autotest/results/default/video_PlaybackPerf/sysinfo/iteration.1"'
12/17 17:33:27.090 DEBUG| global_hooks:0056| 'logger "autotest finished iteration /usr/local/autotest/results/default/video_PlaybackPerf/sysinfo/iteration.1"'
12/17 17:33:27.103 DEBUG| test:0391| after_iteration_hooks completed
12/17 17:33:27.104 WARNI| test:0606| The test failed with the following exception
Traceback (most recent call last):
File "/usr/local/autotest/common_lib/test.py", line 600, in _exec
_call_test_function(self.execute, *p_args, **p_dargs)
File "/usr/local/autotest/common_lib/test.py", line 800, in _call_test_function
return func(*args, **dargs)
File "/usr/local/autotest/common_lib/test.py", line 464, in execute
postprocess_profiled_run, args, dargs)
File "/usr/local/autotest/common_lib/test.py", line 371, in _call_run_once
self.run_once(*args, **dargs)
File "/usr/local/autotest/cros/video/helper_logger.py", line 82, in call
return func(*args, **kwargs)
File "/usr/local/autotest/tests/video_PlaybackPerf/video_PlaybackPerf.py", line 120, in run_once
keyvals = self.test_cpu_usage(local_path)
File "/usr/local/autotest/tests/video_PlaybackPerf/video_PlaybackPerf.py", line 205, in test_cpu_usage
self._original_governors = utils.set_high_performance_mode()
File "/usr/local/autotest/common_lib/utils.py", line 1193, in set_high_performance_mode
original_governors = get_scaling_governor_states(host)
File "/usr/local/autotest/common_lib/utils.py", line 1237, in get_scaling_governor_states
value = run_func('head -n 1 %s' % path, verbose=False).stdout
File "/usr/local/autotest/common_lib/utils.py", line 760, in run
"Command returned non-zero exit status")
CmdError: Command <head -n 1 /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor> failed, rc=1, Command returned non-zero exit status
* Command:
head -n 1 /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor
Exit status: 1
Duration: 0.0176389217377
stderr:
head: cannot open '/sys/devices/system/cpu/cpu3/cpufreq/scaling_governor' for reading: No such file or directory
