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sosy-lab / cpu-energy-meter

A tool for measuring energy consumption of Intel CPUs
BSD 3-Clause "New" or "Revised" License
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missing info #23

Closed slmatrix closed 4 years ago

slmatrix commented 4 years ago

My i9 9900K is not reporting Uncore and PSYS energy numbers. Any ideas on why not?

PhilippWendler commented 4 years ago

In general the tool reports what the CPU produces as measurements, so it seems that the CPU maybe does not provide these values and cpu-energy-meter could not do more. But posting the output of running cpu-energy-meter with parameter -d could be useful.

PSYS is a measurement that depends not only on the CPU, but also on the system. So far I have only seen in on mainboards. Uncore should be present on CPUs with an integrated GPU though.

Maybe you could check with the official Intel tool which values it reports?

slmatrix commented 4 years ago

It seems Uncore does not show for a short run (few seconds). It works when I run the tool for tens of seconds.

Here is the output with ./cpu-energy-meter -d:

root@f3e7960d7e6e:~/cpu-energy-meter# ./cpu-energy-meter -d [DEBUG] GenuineIntel processor found. [DEBUG] Processor is from family 6 and uses model 0x906E0. [DEBUG] Using /dev/cpu/0/msr for accessing MSR of socket 0. [DEBUG] Domain Package is supported. [DEBUG] Domain Core is supported. [DEBUG] Domain Uncore is supported. [DEBUG] Domain DRAM is supported. [DEBUG] Domain PSYS is supported. [DEBUG] Measured the following unit multipliers: RAPL_ENERGY_UNIT=6.103516e-05J RAPL_DRAM_ENERGY_UNIT=6.103516e-05J [DEBUG] Max power consumption of node 0 is 95.000000W. [DEBUG] Interval time of msr probes set to 1378s, 0ns. [DEBUG] Time limit elapsed, reading values to ensure overflows are detected. [DEBUG] Time limit elapsed, reading values to ensure overflows are detected. ^C[DEBUG] Received signal 2. +--------------------------------------+ | CPU Energy Meter Socket 0 | +--------------------------------------+ Duration 3083.460999 s Package 17696.206909 Joule Core 3971.751648 Joule Uncore 0.193359 Joule DRAM 5769.442993 Joule

About PSYS, are you saying that some motherboards do not support the feature? I have an ordinary consumer Z390 mainboard. btw, thank you for replying.

Update: got the intel power gadget to compile. However, it does not support Skylake (https://unix.stackexchange.com/questions/324907/cant-run-intel-power-gadget).

PhilippWendler commented 4 years ago

It seems Uncore does not show for a short run (few seconds). It works when I run the tool for tens of seconds.

This can happen because the resolution of the measurement is low in comparison to the energy consumption here.

About PSYS, are you saying that some motherboards do not support the feature? I have an ordinary consumer Z390 mainboard. btw, thank you for replying.

My understanding is that most (all?) mainboards do not support this feature. I have only seen it on notebooks, so far.