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Python Program running a lot slower after change to Ubuntu - hubenhau - Mar-02-2021
Hello,
I have a program that I wrote and used in Windows.
It's using opencv-pythons template matching to find a lot of pictures very quickly.
On Windows it took about 0.5 seconds but after changing to Ubuntu 20.04LTS it takes 1.5 seconds.
I even installed opencv from the source files after trying it with pip but that didn't change much either.
I hope someone knows the reason or if there is anything to improve the performance on Ubuntu.
Thanks in Advance
RE: Python Program running a lot slower after change to Ubuntu - Serafim - Mar-02-2021
There might be a million reasons. Normally Python is faster on Linux than on Windows and the fastest version is said to be the latest.
First: Is it the same Python implementation and version on both systems?
PyPi is also said to be a faster interpretor than the standard one.
Then there are CPython and Nuitka, where Nuitka is said to be the fastest.
For info look at e.g. https://realpython.com/pypy-faster-python/
https://www.javatpoint.com/which-is-the-fastest-implementation-of-python
You also have performance tips on
https://wiki.python.org/moin/PythonSpeed/PerformanceTips