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From: bugzilla-daemon@bugzilla.kernel.org
To: cpufreq@vger.kernel.org
Subject: [Bug 86461] intel_pstate does not obey min/max frequencies set by user
Date: Fri, 17 Oct 2014 17:02:43 +0000	[thread overview]
Message-ID: <bug-86461-12968-JnKKwq7sTv@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-86461-12968@https.bugzilla.kernel.org/>

https://bugzilla.kernel.org/show_bug.cgi?id=86461

--- Comment #4 from Dirk Brandewie <dirk.brandewie@gmail.com> ---
I looks like everything is working correctly.  You have to remember that the 
frequencies returned by turbostat and intel_pstate are measured effective
frequency over the time of the sample.  Previously with acpi_cpufreq the value
returned through /proc/cpuinfo and the cupfreq sysfs interface was the
requested
frequency and not the actual frequency.

If you want to see that the floor for P states has actually changed you can see 
the requested P state with:
  rdmsr -a -f15:8 0x199

The actual frequency that all cores on the processor run at is selected by the
processor based on the requests for all cores.

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  parent reply	other threads:[~2014-10-17 17:02 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-17  9:21 [Bug 86461] New: intel_pstate does not obey min/max frequencies set by user bugzilla-daemon
2014-10-17 15:17 ` [Bug 86461] " bugzilla-daemon
2014-10-17 16:43 ` bugzilla-daemon
2014-10-17 16:51 ` bugzilla-daemon
2014-10-17 17:02 ` bugzilla-daemon [this message]
2014-10-17 17:28 ` bugzilla-daemon
2014-10-23 13:57 ` bugzilla-daemon
2014-10-28  5:17 ` bugzilla-daemon

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