Subject: paging / memory management (Re: x86-32 PAE)
To: None <email@example.com>
From: Edward B. Dreger <firstname.lastname@example.org>
Date: 07/11/2005 14:57:29
> From: Jason Thorpe
[ Re vnode tables, etc. growing too big with large RAM ]
JT> EBD> What is the proper behavior?
JT> Buy yourself with a 64-bit address space... like an Opteron.
True, but an odd response for an OS that supports VAXen and Sun2; surely
there's more interest in NetBSD on PAE systems. ;-) It looks like
FreeBSD has hard limits on vnodes and friends...
Browsing pmap code has me wondering about:
* Boot-selectable MMU
* Coalescing 4K pages into 2M/4M pages when possible for fewer PT
* Mapping with cache coloring considerations
* Per-CPU page lists to reduce locking
* Unified x86 (i386, i386 + PAE, aa64) MMU.
Any interest in any of the above? Any recommended resources other than
source and Google?
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