Date: Thu, 29 Apr 2021 20:09:20 +0200 From: Jesper Schmitz Mouridsen <jsm@FreeBSD.org> To: freebsd-hackers@freebsd.org Subject: hwpstate_intel cpufreq and est. Message-ID: <226bfdd6-2d24-2dc7-79e3-7dc33a56f2a2@FreeBSD.org>
next in thread | raw e-mail | index | archive | help
Hi list. I am working on sysutils/libsysstat [1], I have maintained it over the years. I even have a little testprogram [2] Recently I got a new CPU which uses freq_driver: hwpstate_intel. It seems to me from values from dev.cpu.X.freq that this drivers supports different freq levels per core? And that the BUG section in man cpufreq stating that "When multiple CPUs offer frequency control, they cannot be set to different levels and must all offer the same frequency settings." Does not apply to hwpstate_intel? Is this correct. My current code relies on this same freq on all cores bug. [1] https://www.freshports.org/sysutils/libsysstat [2] https://people.freebsd.org/~jsm/libsysstat-test.tar.gz Thanks Jesper Schmtiz Mouridsen.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?226bfdd6-2d24-2dc7-79e3-7dc33a56f2a2>