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Bug 996722

Summary: tuned profile CPU governor controls must account for CPU generation
Product: Red Hat Enterprise Linux 7 Reporter: Jeremy Eder <jeder>
Component: tunedAssignee: Jaroslav Škarvada <jskarvad>
Status: CLOSED CURRENTRELEASE QA Contact: Branislav Blaškovič <bblaskov>
Severity: high Docs Contact:
Priority: unspecified    
Version: 7.0CC: anton, bblaskov, jeder, jskarvad, perfbz
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
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.
 Story Points: ---
Clone Of: Environment:
Last Closed: 2014-06-13 11:53:35 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Comment 4 Jaroslav Škarvada 2013-11-05 22:02:01 UTC 
Fixed by upstream commit:
https://git.fedorahosted.org/cgit/tuned.git/commit/?id=94e383a5edd3d165f725b45cbd75ca795ca34a8d
Comment 6 Branislav Blaškovič 2014-02-12 11:59:04 UTC 
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 11:53:35 UTC 
This request was resolved in Red Hat Enterprise Linux 7.0.

Contact your manager or support representative in case you have further questions about the request.