Re: [gentoo-user] 32GB RAM and Swap

[Raphael MD]

On Fri, 1 May 2020 at 18:49 J. Roeleveld <joost@××××××××.org> wrote:

> On 1 May 2020 21:50:02 CEST, Raphael MD <raphaxx@×××××.com> wrote:
> >Hello!
> >
> >Could I turn my Linux swap off.
> >I have 32 GB of RAM memory, I suppose my system don’t need swap,
> >because
> >I’vea lot of RAM, is this true?
> >
> >Thanks
>
> This question keeps getting asked every time people go past some imaginary
> large figure of RAM.
>
> First time I encountered it was somewhere in the 1990s. A friend had a
> machine with 64MB ram, a massive amount at that time, and disabled all swap.
> He was surprised his machine crashed because of memory issues, until I
> asked what he was running. The list included several memory intensive
> applications.
> He never asked that again and adds it to all his machines.
>
> My desktop has 32GB and also has some swap. I do regularly see it used and
> not because of memory leaks like Dale is mentioning, although those do
> appear on occasion. On my desktop it's mostly because I have a lot of stuff
> running the whole time.
>
> So, yes, you still need swap and always will. Unless you put about 10
> times the current magical figure in a desktop. In my view, that would be
> 320GB for now, and in another 5 years, that would be around 640GB.
> When you have that level of overkill in a desktop, I will not consider OOM
> to be likely.
>
>
> --
> Joost
>
> --
> Sent from my Android device with K-9 Mail. Please excuse my brevity.
>

Well, it’s figuring that some sort of swap space is necessary, but
regarding pressure level on kernel, can I setup it to zero or I’m obligated
to put some number because I’ve a swap file?

Thanks

>
> --
M.S. Raphael Mejias Dias
​Nuclear Engineer | Reactors

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