Re: X86_64 and X86_32 bit performance difference [Revisited]

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On 09 Jan 2006 19:27:20 +0100, Andi Kleen <[email protected]> wrote:
> Nauman Tahir <[email protected]> writes:
>
> > I have posted this problem before. Now mailing again after testing as
> > recommeded in previous replys.
> > My configuration is:
>
> Most likely it's related to you misusing the PCI DMA API in some way.
> Review Documentation/DMA-mapping.txt closely.
>
> If that doesn't turn on the light try oprofile.

what is oprofile???
>
> -Andi
>
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