Running systrace gives "preexec_fn is not supported on Windows" error

Question

I'm trying to use Android's Systrace feature as described here and here but when I run the command line described in the above links, it gives me this error :

File "C:\Python27\lib\subprocess.py", line 664, in __init__
raise ValueError("preexec_fn is not supported on Windows "
ValueError: preexec_fn is not supported on Windows platforms

The command line described above is :

python systrace.py --time=10 -o mynewtrace.html sched gfx view wm

I'm not a python dev so I don't have any clue about it and google doesn't help me a lot, any idea?

-- I'm running on a windows 10 computer.

Unfortunately no. I tried to comment the code that was throwing the exception but as expected this gives some other errors. As I said I'm not a python dev and I don't have the time to learn about it so I'm quite stuck with this error. — MHogge, Dec 16 '16 at 09:14
It means systrace uses a feature that Windows does not have. Try submitting them a bug report. — Valentin Lorentz, Dec 18 '16 at 15:25
@ValentinLorentz I'll submit a bug report and come back here if I got any news, thank's for the advice. — MHogge, Dec 19 '16 at 12:53
I am still seeing this error. Did they fix this issue already? — keelar, Feb 25 '17 at 08:21
refer the following post http://stackoverflow.com/questions/11300773/error-running-systrace-tool-in-adb-using-a-jelly-bean-4-1-emulator-on-windows-7 — Addy, Mar 28 '17 at 10:00

Shanker · Answer 1 · 2019-09-13T04:06:30.263

3

Even I faced same issue. Replace the catapult folder in your SDK's platform-tools/systrace location with the catapult folder downloaded from below link.

https://github.com/catapult-project/catapult

edited Sep 13 '19 at 04:06

answered Dec 27 '17 at 09:19

Shanker

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Running systrace gives "preexec_fn is not supported on Windows" error

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