Comment 13 for bug 1874933

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Srinivas Pandruvada (srinivas-pandruvada) wrote :

To reproduce this:

Boot Ubuntu 20.04 LTS (Focal Fossa)with 5.4 kernel.

Open two terminals:
-In the first terminal run the following command "turbostat --show PkgWatt"
-In the second terminal run some all CPU busy workload, like stress-ng or mprime

After few seconds turbostat will show that power is capped around 9W.
Now with this fix the power will be capped around 15W.

So you gain performance worth 6W.