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    SubjectRe: [PATCH] Psychovisually-optimized HZ setting (2.6.33.3)
    On Tue, 27 Apr 2010 21:03:11 +0200 Uwaysi Bin Kareem wrote:

    > This is based on the research I did with optimizing my machine for
    > graphics.
    > I also wrote the following article:
    > http://www.paradoxuncreated.com/articles/Millennium/Millennium.html
    > It is a bit outdated now, but I will update it with current information.
    > The value might iterate.

    Hi,

    What CPU architectures or platforms did you test this on?
    Were any other kernel changes needed?


    > Peace Be With You,
    > Uwaysi Bin Kareem.
    >
    >
    > --- Kconfig.hzorig 2010-04-27 13:33:10.302162524 +0200
    > +++ Kconfig.hz 2010-04-27 20:39:54.736959816 +0200
    > @@ -45,6 +45,18 @@
    > 1000 Hz is the preferred choice for desktop systems and other
    > systems requiring fast interactive responses to events.
    >
    > + config HZ_3956
    > + bool "3956 HZ"
    > + help
    > + 3956 Hz is nearly the highest timer interrupt rate supported in the
    > kernel.
    > + Graphics workstations, and OpenGL applications may benefit from this,

    drop first comma.

    > + since it gives the lowest framerate-jitter. The exact value 3956 is
    > + psychovisually-optimized, meaning that it aims for a level of jitter,
    > + percieved to be natural, and therefore non-nosiy. It is tuned for a

    perceived non-noisy.

    > + profile of "where the human senses register the most information".
    > +
    > +
    > +
    > endchoice
    >
    > config HZ
    > @@ -53,6 +65,7 @@
    > default 250 if HZ_250
    > default 300 if HZ_300
    > default 1000 if HZ_1000
    > + default 3956 if HZ_3956
    >
    > config SCHED_HRTICK
    > def_bool HIGH_RES_TIMERS && (!SMP || USE_GENERIC_SMP_HELPERS)
    >
    > --


    ---
    ~Randy
    *** Remember to use Documentation/SubmitChecklist when testing your code ***


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