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From: Stefan Monnier via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>
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Subject: Re: memory tken by emacs
Date: Fri, 10 Mar 2023 11:23:03 -0500
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>>> also, if i kill a buffer and gc, will it reduce memory?
>> If it can, it will, yes.
> i've killed all buffers using ibuffer and no difference.

It's considered normal and acceptable that memory allocated to a process
is returned to the OS only when the process dies.

Some efforts are made to return memory to the OS when possible, but
less common than most users (and developers) expect.


        Stefan