Re: [PATCH] cpufreq, intel_pstate, set max_sysfs_pct and min_sysfs_pct on governor switch

From: Prarit Bhargava
Date: Wed Oct 07 2015 - 11:46:36 EST




On 10/07/2015 11:40 AM, Doug Smythies wrote:
>
> Do we agree or disagree that the root issue seems to be (from your test)?:
>
> \# echo 100 > /sys/devices/system/cpu/intel_pstate/min_perf_pct
>
> [ 21.483436] store_min_perf_pct[453] min_sysfs_pct = 100
> [ 21.489373] store_min_perf_pct[456] min_perf_pct = 100
> [ 21.495203] store_min_perf_pct[459] min_perf_pct = 100
> [ 21.501050] store_min_perf_pct[462] min_perf_pct = 100

Yep, and it appears to be done by default in Fedora & RHEL :/ ... the issue is
still the same IMO that min_sysfs_pct & max_sysfs_pct are not cleared on a
governor switch.

P.
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