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signal.ItimerError: [Errno 22] Invalid argument

See original GitHub issue

After installing scalene from pip, version 0.8.2, I get the following error:

(base) alberto@serenity:~$ python -m scalene scalene/test/testme.py
Scalene: An exception of type ItimerError occurred. Arguments:
(22, 'Invalid argument')
Traceback (most recent call last):
  File "/home/alberto/miniconda3/lib/python3.7/site-packages/scalene/scalene.py", line 712, in main
    profiler.start()
  File "/home/alberto/miniconda3/lib/python3.7/site-packages/scalene/scalene.py", line 488, in start
    Scalene.enable_signals()
  File "/home/alberto/miniconda3/lib/python3.7/site-packages/scalene/scalene.py", line 196, in enable_signals
    signal.setitimer(Scalene.cpu_timer_signal, Scalene.mean_signal_interval, Scalene.mean_signal_interval)
signal.ItimerError: [Errno 22] Invalid argument

Error in atexit._run_exitfuncs:
Traceback (most recent call last):
  File "/home/alberto/miniconda3/lib/python3.7/site-packages/scalene/scalene.py", line 656, in exit_handler
    Scalene.disable_signals()
  File "/home/alberto/miniconda3/lib/python3.7/site-packages/scalene/scalene.py", line 648, in disable_signals
    signal.setitimer(Scalene.cpu_timer_signal, 0)
signal.ItimerError: [Errno 22] Invalid argument

I’m running Python 3.7.4 in Ubuntu 16.04.

Issue Analytics

State:
Created 3 years ago
Comments:5 (3 by maintainers)

Top GitHub Comments

1reaction

albertotbcommented, Apr 2, 2020

Ok, after installing Ubuntu 18.02 on WSL2, I can confirm that scalene runs just fine. Thanks!

1reaction

emerybergercommented, Apr 1, 2020

Interesting. I just verified that it works fine on Ubuntu 19.10, Python 3.7.5. It seems to be complaining that a particular signal (signal.ITIMER_VIRTUAL) doesn’t exist, which is pretty surprising.

Can you try invoking it with --wallclock? As in:

python3 -m scalene --wallclock scalene/test/testme.py

Also, please do a man setitimer and paste that in. Seems hard to believe that signal.ITIMER_VIRTUAL is not supported.

thanks!

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