Subject: Re: fine-tunable swap (was Re: Drive numbering...)
To: None <current-users@NetBSD.ORG>
From: Paul Dokas <>
List: current-users
Date: 11/17/1995 09:35:53
> Combine the two thoughts, and you have a fine-tunable paging system.
> It would certainly be nice to have the ability to establish how much
> swap you *really* need (and how little you can get away with), instead
> of doing the 'by guess and by golly' method of 1:1.1 physmem:swap.
> In addition, although one can add swap in the case of extreme temporary
> activity, to be able to delete swap (without rebooting) would be nice
> to be able to do.
> 				--*greywolf;

So what you do is reimplement the ffs and swapping code in the following
way:  allow the user to declare dedicated partitions for swapping (just
as it is now), but when they fill up, have the system start grabbing
free filesystem blocks for paging.  This would avoid forcing the system's
owner from having to learn about vnodes, etc.

And no, I'm not volunteering;  just daydreaming.

       Cthulhu/Yog '96         | Paul Dokas
Why settle for lesser evils?   |