Re: x86_64: Make sparsemem/vmemmap the default memory model

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From: Andi Kleen <ak@...>

To: Christoph Lameter <clameter@...>

Cc: <linux-kernel@...>, <linux-mm@...>, Mel Gorman <mel@...>, Andy Whitcroft <apw@...>

Subject: Re: x86_64: Make sparsemem/vmemmap the default memory model

Date: Monday, November 12, 2007 - 7:59 pm

On Tuesday 13 November 2007 00:52:14 Christoph Lameter wrote:
quoted text> Use sparsemem as the only memory model for UP, SMP and NUMA.
> 
> Measurements indicate that DISCONTIGMEM has a higher
> overhead than sparsemem. And FLATMEMs benefits are minimal. So I think its
> best to simply standardize on sparsemem.

How about the memory overhead? Is it the same too?
And code size vs flatmem?

-Andi
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Messages in current thread:

x86_64: Make sparsemem/vmemmap the default memory model, Christoph Lameter, (Mon Nov 12, 7:52 pm)

Re: x86_64: Make sparsemem/vmemmap the default memory model, Andi Kleen, (Mon Nov 12, 7:59 pm)

Re: x86_64: Make sparsemem/vmemmap the default memory model, Christoph Lameter, (Mon Nov 12, 8:42 pm)

Re: x86_64: Make sparsemem/vmemmap the default memory model, Andi Kleen, (Mon Nov 12, 8:49 pm)

Re: x86_64: Make sparsemem/vmemmap the default memory model, Christoph Lameter, (Mon Nov 12, 11:42 pm)

Re: x86_64: Make sparsemem/vmemmap the default memory model, Andrew Morton, (Thu Nov 15, 6:12 pm)

Re: x86_64: Make sparsemem/vmemmap the default memory model, Christoph Lameter, (Thu Nov 15, 10:24 pm)

Re: x86_64: Make sparsemem/vmemmap the default memory model, Andrew Morton, (Thu Nov 15, 10:52 pm)

x86_64: Make sparsemem/vmemmap the default memory model V2, Christoph Lameter, (Thu Nov 15, 11:55 pm)

Re: x86_64: Make sparsemem/vmemmap the default memory model, Ray Lee, (Tue Nov 13, 12:27 am)

Re: x86_64: Make sparsemem/vmemmap the default memory model, Christoph Lameter, (Tue Nov 13, 12:41 am)

Re: x86_64: Make sparsemem/vmemmap the default memory model, Jörn, (Tue Nov 13, 4:41 pm)

Re: x86_64: Make sparsemem/vmemmap the default memory model, Christoph Lameter, (Tue Nov 13, 5:52 pm)

Re: x86_64: Make sparsemem/vmemmap the default memory model, Jörn, (Tue Nov 13, 6:30 pm)

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