Re: ARM11 MPCore with Linux is slower than ARM9 with OSE

Bhattiprolu RaviKumar <[email protected]> Tue, 12 Apr 2011 13:54:56 +0530
Newsgroups gmane.linux.ports.arm.general
Message-ID <[email protected]>
Nagendra,
  Both are clocked at same frequency 200MHz.
regards,
Ravi

On Tue, Apr 12, 2011 at 1:46 PM, Nagendra <[email protected]> wrote:

> The first thing I would check is the clock frequencies at which you have
> configured ARM9 and ARM11.
>
> --- On *Thu, 3/17/11, Bhattiprolu RaviKumar <
> [email protected]>* wrote:
>
>
> From: Bhattiprolu RaviKumar <[email protected]>
> Subject: ARM11 MPCore with Linux is slower than ARM9 with OSE
> To: [email protected]
> Date: Thursday, March 17, 2011, 3:43 PM
>
>
> Hi All,
>   I am working on porting some code from ARM9 (without MMU) with OSE to
> ARM11 MPCore with Linux. This particular code reads and writes data from a
> peripheral registers two bytes at a time. This register is memory mapped to
> ARM address space. Even after moving the code to Kernel on ARM11, it runs
> very slow compared to similar code on ARM9 with OSE. All the branch
> predictions are enabled in ARM11. Any pointers on what is going wrong here?
>
> regards,
> Ravi
>
>
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