[talk] Does swap still matter?

Sujit K M kmsujit at gmail.com
Wed Mar 16 11:09:35 EDT 2022

I believe things have changed further from bare metal to virtualization,
like VMware and Citrix. So adding processor or memory is nolonger a
difficult or costly task. But swap has still got a purpose is technically
sound is what I believe.

On Wed, 16 Mar, 2022, 20:35 George Rosamond, <george at ceetonetechnology.com>

> This has been an on and off debate I've had with myself and others, and
> wanted some input from others. Input from live experiences is great,
> input from low-level devs is even better.
> When RAM never seemed adequate for a system in the past, the utility of
> swap was obvious. You would see the spikes on top(1) when swap was hit.
> swap = 2 x RAM, blah blah.
> Today, when those 64G or more of RAM are the norm for bare-metal boxes,
> and it's overkill in many contexts, is swap still necessary?
> Do certain applications/OS functions still use swap as opposed to RAM
> for some reason? I mean, swap is normally encrypted by default, so there
> is a justifiable reason to use swap over RAM.
> I know encrypted RAM is a (small) part of the universe today, including
> with the Ryzen pro series.
> Looking forward to being enlightened.
> g
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