On Wed, Jul 01, 2020 at 10:36:59AM +0200, Benjamin Berg wrote: > On Tue, 2020-06-30 at 17:48 +0200, Vitaly Zaitsev via devel wrote: > > On 30.06.2020 15:25, Ben Cotton wrote: > > > Better thermal management and peak performance on Intel CPUs by > > > including thermald in the default install. > > > > Good, but thermald is absolutely useless without configs. Configs can be > > extracted from DPTF ACPI tables only with *proprietary* dptfextract utility. > > But, this is not true in general and we can expect further improvements > in the near future. It will not help in all situations, but there are > situations where users will see improved performance. One example of > this is for example an improved peak-performance on pre-Kabylake > systems (I am looking into finding further examples). > > > So, it is true that thermald will throw around quite a few warnings at > startup (it seems to warn about anything it probes and cannot find). > But that does not imply that it is always useless. It does for example > use information from the PPCC tables even if it does not have any > configuration. These power limits are exported by the kernel in > /sys/bus/pci/devices/*/power_limits/. That is worrying. We already have plenty of services which spam the logs with pointless warnings, leading to bad UX. I think fixing this should be a prerequisite to enabling by default. > Also, some reverse engineering work has been happening. This means that > it is possible to improve thermald to get at least some of the benefits > of a DPTF based configuration without needing dptfxtract. This is > currently still work in progress, however, upstream is planning to > merge this work once it has been cleaned up sufficiently. > > i.e. at this point we can fully expect to get improved thermal > management based on the DPTF tables without dptfxtract. So... could we arrange it so that thermald only runs if there's actually a benefit from it running? E.g. exit quietly if it realizes it cannot do anything useful for the hardware present? > > Also Fedora cannot ship extracted by dptfextract configs due to their > > legal status. > > The idea to ship those configurations separately has been dropped from > the proposal. The proposal says "Proposal owners: - Include the thermald package in the default Workstation install". Do you want it be enabled by default? If yes, the proposal should say that. Zbyszek _______________________________________________ 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
