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ddr benchmarking

Question asked by johan lantz on Jan 30, 2014

During another investigation I have noticed that the performance between SL and S are enormous when it comes to memory benchmarking.

 

I have run the same code and used the same blocks within the ASIC so it should be identical result. The SL and S has the same ARM CPU (996MHz) and PL310 cache and DDR controller. The only difference are the L2$ size that are half in SL compared with S.

 

My measurement shows that the difference are ~ 5 times better in S than in SL. Could you just elaborated with this result and also the expected benchmark for the DDR (400 MHz)?

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