From: Al Boldi <a1426z@gawab.com>
To: Jamie Lokier <jamie@shareable.org>
Subject: Re: [RFC] VM: I have a dream...
Date: Thu, 2 Feb 2006 15:26:08 +0300
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Jamie Lokier wrote:
> If I understand your scheme, you're suggesting the kernel accesses
> disks, filesystems, etc. by simply reading and writing somewhere in
> the 64-bit address space.
>
> At some level, that will involve page faults to move data between RAM and
> disk.
>
> Those page faults are relatively slow - governed by the CPU's page
> fault mechanism.  Probably slower than what the kernel does now:
> testing flags and indirecting through "struct page *".

Is there a way to benchmark this difference?

Thanks!

--
Al

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