topic Jeremie, in Software Tuning, Performance Optimization & Platform Monitoring

Intel PCM, measuring RAM activity ? (data not energy)

Jeremie_Lagraviere — Fri, 20 Feb 2015 08:54:34 GMT

Hi everyone,

I have a simple question about Intel PCM:

Is it possible to measure RAM data activity in the code ?

Same question with any of the ready-made tools provided in Intel PCM package ?

All I have seen so far, is RAM energy measurement.

Thanks in advance for your help :)

--Jeremie.

Thomas_W_Intel — Fri, 20 Feb 2015 10:03:00 GMT

Jeremie,

it is not entirely clear to me what you mean by "DRAM activity".

You can measure memory read and write traffic per channel with pcm-memory (but not per DIMM)
You can measure DRAM power saving states per rank with pcm-power.
You can measure DRAM self-refresh and PPD statistics with pcm-power

Does this suit your needs?

Kind regards

Thomas

Jeremie_Lagraviere — Fri, 20 Feb 2015 14:17:00 GMT

I tried pcm-memory.x it works well. I think I will take inspiration into the code to look precisely at what I want to do :)

Thanks a lot !