How to calculate memory access latency

I have been solving quite a few problems on this concept recently.

The perception about latency Many users believe CAS latency is an accurate indicator of real world latency performance Many users also believe that since CAS latencies increase with speed gains, some of the speed gets nullified.

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how to calculate memory access latency

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies. Since CL ratings only indicate the total number of clock cycles, they don't have anything to do with the duration of each clock cycle, and thus, they shouldn't be extrapolated as the sole indicator of latency performance. By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service.

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Sign up using Facebook. And CL ratings are an inaccurate, and often misleading, indicator of true latency and memory performance. Filter by: Which is more important: Would you like to shop on our US site? Post Your Answer Discard By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies.

If the problem states that the time is a miss penalty , it should mean that the time is in addition to the time for a cache hit; so the total miss latency is the latency of a cache hit plus the penalty.

how to calculate memory access latency

I put an emphasis because it is reasonable to assume there is no way to skip the cache in this kind of exercises. Sign up or log in Sign up using Google. RU site. True latencies haven't necessarily increased, just CAS latencies.

how to calculate memory access latency

Another answer I received stated: Surya Surya 11 1. Sign up using Email and Password.

Hot Network Questions. A related question was raised in comments: The latter may make explaining latency effects of L2 size or associativity simpler e.

how to calculate memory access latency

But that's not necessary for the formula to work. This is one of the contorted assumptions.

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