Re: [PATCH v4 RESEND] x86, sched: Use midpoint of max_boost and max_P for frequency invariance on AMD EPYC

[Giovanni Gherdovich]

On Fri, 2020-12-04 at 18:03 +0100, Giovanni Gherdovich wrote:
> Frequency invariant accounting calculations need the ratio
> freq_curr/freq_max, but freq_max is unknown as it depends on dynamic power
> allocation between cores: AMD EPYC CPUs implement "Core Performance Boost".
> Three candidates are considered to estimate this value:
> [...]
> 
> Benchmarks are described in the next section.
> Tilde (~) means the value is the same as baseline.
> 
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
>             ondemand  perfgov  sugov-noinv  sugov-max  sugov-mid  sugov-P0  better if
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> [...]

Hello,

this patch is currently merged in the tip tree, branch sched/core as
commit 46609527577d1def0af29ca5b56cffeeea771ada.

Unfortunately in the original commit message I used "----------" for
making table headers, and git dropped all the commit message after
that sign, i.e. the benchmark results and my signed-off-by.

In this "resend" I replaced the offending sign and the new commit
message should make it intact to the destination tree.


Thanks,
Giovanni