tech-kern archive

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]

Re: A simple cpufreq(9) (Jukka Ruohonen) writes:

>You all miss the point that these "humanisations" (a.k.a. abstractions) are
>primarily targeted for the use in sys/kern. The kernel<->user API is just a
>convenient side product of these abstractions.

What is wrong with the "abstraction" of having a number of ordered
performance states? Hiding the states behind something pretending to
be a continuum (wether this is a MHz value or a percentage doesn't matter)
causes confusion. You never know what performance state you selected
and you start to assume that 100% is twice as fast as 50% even when
there is no correlation.

                                Michael van Elst
                                "A potential Snark may lurk in every tree."

Home | Main Index | Thread Index | Old Index