RE: [RFC/RFT][PATCH] cpufreq: intel_pstate: Work in passive mode with HWP enabled
From: Doug Smythies
Date: Mon May 25 2020 - 17:09:59 EST
The INTEL_CPUFREQ_TRANSITION_DELAY_HWP = 20000
test results from this e-mail were incorrect.
The test and graphs are being re-done.
On 2020.05.25 08:30 Doug smythies wrote:
> Legend - intel_pstate - powersave graph .
> What? Why is there such a graph, unrelated to this patch?
> Well, because there is a not yet understood effect.
> p_powe_stock : intel_pstate, powersave, stock kernel (5.7-rc6), hwp disabled.
> P_powe_hwp : intel_pstate, powersave, patched kernel (5.7-rc6), DELAY_HWP 5000.
> P_powe_hwp2 : intel_pstate, powersave, patched kernel (5.7-rc6), DELAY_HWP 20000.
> Conclusion: ??
> Note: That I merely made a stupid mistake is a real possibility.
Yes, that was it. However all DELAY_HWP 20000 tests were bad,
Not just this one.