Re: MPC8313 performance evaluation

[Lutz Jaenicke <ljaenicke@innominate.com>]

On Thu, Aug 06, 2009 at 02:16:55PM -0500, Kumar Gala wrote:
>
> On Aug 6, 2009, at 1:00 PM, Lutz Jaenicke wrote:
>> With the MPC8343@400MHz I get a throughput of approx. 24500 frames/s
>> using the predefined firewall rules.

>> With the MPC8313 I get a significantly lower value:
>> MPC8313@250MHz          12500fps
>> MPC8313@333MHz          14500fps
>> MPC8313@416MHz          15500fps      (333MHz type, overclocked)

> What DDR frequencies (and width) are you running the 8343 vs 8313 at.   
> This can have a significant impact on performance.

The 8343 is running DDR2 32bit at 266MHz (CSB 266MHz)
The 8313 is running DDR2 32bit at 333MHz (CSB 166MHz)

The test were performed with 128byte frames so that the overall
bandwidth needed is far below even 100Mbit/s.

Best regards,
	Lutz
-- 
Dr.-Ing. Lutz Jänicke
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