Ram memory not freed after executing python script on ubuntu system

[Chris Angelico]

On Thu, May 28, 2020 at 6:26 PM Rahul Gupta <rahulgupta100689 at gmail.com> wrote:
>
> On Thursday, May 28, 2020 at 11:20:05 AM UTC+5:30, Rahul Gupta 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
> Yes i am sure 125 gb of ram is there.
> And you talked about refrences
> see these links
> https://stackoverflow.com/questions/39100971/how-do-i-release-memory-used-by-a-pandas-dataframe
> http://effbot.org/pyfaq/why-doesnt-python-release-the-memory-when-i-delete-a-large-object.htm
>

Both of those are extremely old. Also, you said that you had
terminated the Python process, so neither is relevant.

You need to look elsewhere for your memory usage. If Python isn't
running, it's not Python that's using up your memory.

ChrisA