Bug 996722 - tuned profile CPU governor controls must account for CPU generation
tuned profile CPU governor controls must account for CPU generation
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: tuned (Show other bugs)
All Linux
unspecified Severity high
: rc
: ---
Assigned To: Jaroslav Škarvada
Branislav Blaškovič
Depends On:
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Reported: 2013-08-13 15:39 EDT by Jeremy Eder
Modified: 2014-06-18 03:33 EDT (History)
5 users (show)

See Also:
Fixed In Version: tuned-2.3.0-1.el7
Doc Type: Bug Fix
Doc Text:
Cause: Newer Intel CPUs default to the intel_pstate driver. Consequence: The instel_pstate driver moves the control to the CPU. It doesn't directly control the stepping, it only sets the policy requirements. As a consequence there is no ondemand governor and there are different knobs in comparison to the acpi_cpufreq driver. Previously tuned knows only the cpufreq interface. Fix: Support for intel_pstate driver was added into Tuned. Result: Tuned now detects the intel_pstate driver if in use, use it's knobs and doesn't try to set the unsupported governors.
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Clone Of:
Last Closed: 2014-06-13 07:53:35 EDT
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
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Comment 4 Jaroslav Škarvada 2013-11-05 17:02:01 EST
Fixed by upstream commit:
Comment 6 Branislav Blaškovič 2014-02-12 06:59:04 EST
I can see this patch in tuned-2.3.0-6.el7.noarch. It should be working but I cannot test this deeper.

Marking verified.
Comment 7 Ludek Smid 2014-06-13 07:53:35 EDT
This request was resolved in Red Hat Enterprise Linux 7.0.

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