linux-kernel - Turbostat is duplicating pkgwatt on dual socket with perf mode enabled

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Message-ID: <294a5a56-e5cc-44c2-841b-25ef73560223@criteo.com>
Date: Tue, 13 May 2025 15:14:15 +0200
From: Erwan Velu <e.velu@...teo.com>
To: patryk.wlazlyn@...ux.intel.com, len.brown@...el.com
Cc: linux-kernel@...r.kernel.org
Subject: Turbostat is duplicating pkgwatt on dual socket with perf mode
 enabled

Hi,

I'm currently testing some dual socket AMD servers and found that 
Turbostat is duplicating the pkgwatt when Perf API is used.

I'm loading only one of the two packages and they both report the same 
pkgwatt which is incorrect according to the raw value reported by the 
SMI interface.

If I'm adding "--no-perf" the pkgwatt gets the proper value.

I wonder if you have some hints on where the issue could be in the 
turbostat code ?

I can make a patch and/or test some if you have hints on a possible reason.

Erwan,