How to measure the RAM read/write performance

[Valdis.Kletnieks at vt.edu]

On Tue, 26 Feb 2013 22:35:35 +0700, Mulyadi Santosa said:

> let' see....
>
> what if you do read and write pattern, in certain order so that it
> will be invalidated by the L1/L2/L3 cache everytime?
>
> AFAIK, one thing for sure, reading data from sequentially and re-read
> them will make end up reading cache in the 2nd operation and so on.
>
> I think the most certain way to do it is to read data (or write) data
> bigger than total L1/L2/L3 cache.

Of you could just download a copy of memtest+ and run that - I think that
provides some timing info in addition to actually testing your memory.
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