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Re: [Xen-devel] Memory allocation in NUMA system

To: Andre Przywara <andre.przywara@xxxxxxx>
Subject: Re: [Xen-devel] Memory allocation in NUMA system
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Mon, 28 Jul 2008 15:53:43 +0100
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, "Yang, Xiaowei" <xiaowei.yang@xxxxxxxxx>
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On 28/7/08 15:26, "Andre Przywara" <andre.przywara@xxxxxxx> wrote:

> Because that is the most common configuration? Do you know of any
> machine where this is not true? I agree that a dual node machine with 2
> gig on each node does not need this patch, but NUMA machines tend to
> have more memory than this (especially given the current memory costs).
> I changed the default DMA_BITSIZE to 30 bits, this seems to be a
> reasonable value.

I'll take that bit then (the CONFIG_DMA_BITSIZE change). Sounds like it
suffices for all systems you care about.

 -- Keir



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