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[66.183.142.209]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-33b9786084fsm2740093a91.10.2025.10.15.07.11.41 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 15 Oct 2025 07:11:41 -0700 (PDT) From: "Doug Smythies" To: "'Sergey Senozhatsky'" Cc: "'Rafael J. Wysocki'" , "'Christian Loehle'" , "'Rafael J. Wysocki'" , "'Greg Kroah-Hartman'" , "'Artem Bityutskiy'" , "'Sasha Levin'" , "'Daniel Lezcano'" , , , "'Tomasz Figa'" , , "Doug Smythies" References: <36iykr223vmcfsoysexug6s274nq2oimcu55ybn6ww4il3g3cv@cohflgdbpnq7> <08529809-5ca1-4495-8160-15d8e85ad640@arm.com> <2zreguw4djctgcmvgticnm4dctcuja7yfnp3r6bxaqon3i2pxf@thee3p3qduoq> <8da42386-282e-4f97-af93-4715ae206361@arm.com> <49cf14a1-b96f-4413-a17e-599bc1c104cd@arm.com> <7ctfmyzpcogc5qug6u3jm2o32vy2ldo3ml5gsoxdm3gyr6l3fc@jo7inkr3otua> <001601dc3d85$933dd540$b9b97fc0$@telus.net> In-Reply-To: Subject: RE: stable: commit "cpuidle: menu: Avoid discarding useful information" causes regressions Date: Wed, 15 Oct 2025 07:11:41 -0700 Message-ID: <001601dc3ddd$a19f9850$e4dec8f0$@telus.net> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-2022-jp" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 16.0 Content-Language: en-ca Thread-Index: AQFP8RZJEbA2uDnjQfbsE3QfwpHW3AGSQ1aYA2hH1ScDEHwS7AHjtqkUAUPNRMECUslMCgJdmtwzAg5460ECxaw7RrU2HJdQ On 2025.10.14 21:50 Sergey Senozhatsky wrote: > On (25/10/14 20:41), Doug Smythies wrote: >> What thermal limiting methods are being used? Is idle injection being used? Or CPU frequency limiting or both. > > How do I find out? >From the turbostat data you do not appear to be using the TCC offset method. This line: cpu0: MSR_IA32_TEMPERATURE_TARGET: 0x0f690080 (105 C) whereas on my test computer, using the TCC offset method, shows: cpu0: MSR_IA32_TEMPERATURE_TARGET: 0x14641422 (80 C) (100 default - 20 offset) To check if thermal is being used do: systemctl status thermal Example: doug@s19:~/idle/teo/menu2$ systemctl status thermald ○ thermald.service - Thermal Daemon Service Loaded: loaded (/usr/lib/systemd/system/thermald.service; disabled; preset: enabled) Active: inactive (dead) If something else is being used, I don't know. ... Doug