Why is intel_pstate disabled in kernel?
teneri
Status: New User - Welcome
Joined: 21 Jan 2018
Posts: 1
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Why intel_pstate is disabled in kernel? What is the reason for this?
I have hardware that would probably benefit from it.
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damentz
Status: Assistant
Joined: 09 Sep 2008
Posts: 737
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When intel_pstate is used with MuQSS, intel_pstate is too aggressive at increasing frequency, leaving the CPU running at a higher voltage than necessary when idle or running mixed loads. The 'schedutil' frequency governor has the same problem as 'intel_pstate'.

And even if these frequency spikes were fixed in a later version of MuQSS or intel_pstate, MuQSS distributes its workload significantly more evenly than CFS, resulting in less opportunities to boost individual cores. With MuQSS, it's more important that all core turbo works correctly rather than single core.
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