So, this was discussed quite a bit in https://pagure.io/fedora-workstation/issue/71 and the conclusion that the Workstatopn Working Group came to 3 months ago was that we didn't want to do this. We basically understood that main way of using thermald was to use the proprietary dptfxtract tool to extract a profile from ACPI - and as such, thermald wasn't something Fedora should install by default. This functionality can't be properly integrated into Fedora and "just work" for users if it requires a proprietary tool and extra steps. After seeing the submission this morning, we talked to Benjamin Berg on our call today, and he said that the main reason that he submitted this despite the earlier discussion was that he recently was told by an OEM that when run without a profile it made a big difference on some of their models. We asked Benjamin if he could provide more details about what models and the difference in performance - he will go back to the OEM and ask for more information, and we'll discuss this again at our call next week. - Owen On Tue, Jun 30, 2020 at 9:27 AM Ben Cotton <bcotton@xxxxxxxxxx> wrote: > > https://fedoraproject.org/wiki/Changes/ThermalManagementWS > > == Summary == > Better thermal management and peak performance on Intel CPUs by including thermald in the default install. > > == Owner == > * Name: [[User:benzea| Benjamin Berg]] > * Email: bberg@xxxxxxxxxx > > * Name: [[User:ckellner| Christian J. Kellner]] > * Email: ckellner@xxxxxxxxxx > > * Product: Workstation > * Responsible WG: Workstation > > > == Detailed Description == > > Modern Intel-based systems provide sensors and methods to monitor and control temperature of its CPUs. The Thermal daemon will use those sensors to monitor the temperature and use the best available method to keep the CPU in the right temperature envelop. On certain systems this is needed to reach the maximal performance. thermald will for example use the PPCC power table to set power limits (when available, see for example https://www.mail-archive.com/kernel-packages@xxxxxxxxxxxxxxxxxxx/msg411614.html). This is for example the case on Ice Lake, where thermald can increase the performance of the out-of-the-box behaviour of Fedora. > > Not strictly necessary, but *further* improvements can be achieved by using per-model thermald configurations. The most straight forward way of using those is for the user to install dptfxtract (available from rpmfusion). At least parts of what dptfxtract can already do may be integrated into thermald in the future thanks to the reverse engineering work done by Matthew Garret (see https://github.com/intel/thermal_daemon/tree/mg_patches_test, https://github.com/intel/thermal_daemon/pull/224). Should the reverse engineering effort be merged, or if the user installs dptfxtract, then they can expect a performance boost on some machines. > > Theoretically one could ship appropriate per-machine configurations as a separate package (or inside thermald). However, this is not part of the proposal for a number of reasons: > 1. It is not clear how the configuration data can be collected > 2. We do not currently have an implementation to load such configuration data > 3. This may become obsolete with if the reverse-engineering effort continues and is merged (or picked up by Fedora) > > For a more details explanation please consult Intel's [https://01.org/linux-thermal-daemon/documentation/introduction-thermal-daemon introduction] to thermald. > > == Benefit to Fedora == > Better out-of-the-box experience due to improved cooling methods and performance on Intel systems. This affects many modern laptops (e.g. the Ice Lake platform). On affected machines, Fedora would continue to have poorer performance compared to other distributions. > > == Scope == > * Proposal owners: > - Include the thermald package in the default Workstation install > > * Other developers: N/A (not a System Wide Change) > * Release engineering: > * Policies and guidelines: N/A (not a System Wide Change) > * Trademark approval: N/A (not needed for this Change) > > == Upgrade/compatibility impact == > N/A (not a System Wide Change) > > == How To Test == > > Install the packages and use e.g. turbostat to monitor the performance. Improvements may only be visible if the non-free dptfxtract package is also installed. > > == User Experience == > - Better performance on certain hardware > - Better cooling of CPUs on certain hardware > > == Dependencies == > N/A (not a System Wide Change) > > == Contingency Plan == > * Contingency mechanism: Don't ship package by default > * Contingency deadline: N/A (not a System Wide Change) > * Blocks release? N/A > > > -- > Ben Cotton > He / Him / His > Senior Program Manager, Fedora & CentOS Stream > Red Hat > TZ=America/Indiana/Indianapolis > _______________________________________________ > devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx > To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx > Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
