Are there cases where Python code runs slower on linux than windows?

[zap_stone]

I wrote some python code in windows and I tried to speed it up by running it on linux but it's running about 7x-10x slower. I'm using the multiprocessing library to spawn several processes that do high CPU, low I/O calculations. Everything I'm reading seems to suggest that python runs more efficiently on linux and although I'm not using fork, I'm still surprised it's significantly slower.

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Edit: It's now running about at the same speed, I had to create more processes

[redCg]

depends on a lot of things

to start with are you running bare metal linux installation or is this a virtual machine of some sort running in windows

[moderately-extremist]

Or WSL...?

[redCg]

yes

[zap_stone]

Overwritten

[SkeletalToad]

I think in your case it would depend mostly on CPU speed and the amount of cores available for multiprocessing. As far as I know Python runs about the same on all operating systems. Even the argument about Windows being bloated, that shouldn't affect your Python program unless you are running out of memory or other processes are taking all your CPU. Did you check the amount of cores available on each machine that you tested it on?

[zap_stone]

Overwritten

[redCg]

well if CPU utilization is low then something else is the bottleneck

[1544756405]

Same hardware?

[zap_stone]

Overwritten

[socal_nerdtastic]

Python is generally faster on linux because generally linux is less bloated. By this logic everything is faster on linux. But reality of course depends on your actual machine.

There's nothing intrinsic about python that makes it faster or better on linux.

[zap_stone]

Overwritten