Ram memory not freed after executing python script on ubuntu system

[Chris Angelico]

On Thu, May 28, 2020 at 3:51 PM Rahul Gupta <rahulgupta100689 at gmail.com> wrote:
>
>
> I am having a Ubuntu system which has 125 Gb of RAM. I executed few python scripts on that system. Those scripts uses numpy arrays and pandas. Now execution was over but still 50 gb of RAM and 2 Gb cache and 8.4 Gb of swap is occupied. At this moment nothing is running on the system. I have googled it. Most of th result shows that python garbage collector is poor in performance. I want this memory to be cleaned and re claim. One of the easiest way is to restart the system but i dont want to restart i want a way to do this when the system is up and running. Kindly tell me how to do this. Thanks
>

The Python garbage collector is irrelevant once you have terminated
Python. I suggest you look elsewhere in your system - if 50GB of RAM
is still in use after the Python process has ended, it's not being
used by Python.

Also, that's an awful lot of RAM, but a surprising amount. Are you
sure it's not 128GB?

I don't know where you got your information from regarding the "poor
performance" of the Python GC, but without citations, it's nothing but
FUD.

ChrisA