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    SubjectRe: [stable] regression in 2.6.35.4 'load is to heavy (video subsystem?)'
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    [Am 22.09.2010, 02:01 Uhr, schrieb Greg KH <greg@kroah.com>]

    > On Tue, Sep 21, 2010 at 04:50:07PM -0700, Andrew Morton wrote:
    >> On Mon, 30 Aug 2010 10:02:36 +0200
    >> Karsten Mehrhoff <kawime@gmx.de> wrote:
    >>
    >>> Using the same .config from 2.6.35.3 to compile 2.5.36.4 results in a
    >>> heavy load with 2.6.35.4.
    >>
    >> A regression within -stable is rather bad.
    >
    > Agreed.
    >
    >>> Example:
    >>>
    >>> Difference between 2.6.35.1/2/3 and 2.6.35.4 while watching some
    >> videos:
    >>> 2.6.35.4 switches the cpu for flash videos in the browser (opera or
    >>> iceweasel) or other video outputs to 2200/2400/2600 MHz meanwhile
    >> 2.6.35.3
    >>> (or older) stays at 1000 Mhz. That results in a higher cpu
    >> temperature,
    >>> more power consumption and so one.
    >>>
    >>> Using other GUI program results in nearly the same problems with
    >> 2.6.35.4,
    >>> so this kernel is unusable for me.
    >>>
    >>> Results to see the difference for the same action
    >>> 2.6.35.4
    >>> Core0 Temp: +45.0__C
    >>> Core1 Temp: +43.0__C
    >>> cpu MHz: 2200.000 or higher
    >>>
    >>> 2.6.35.3
    >>> Core0 Temp: +32.0__C
    >>> Core1 Temp: +31.0__C
    >>> cpu MHz: 1000.000 (max. 1800, but falling back to 1000)
    >
    > Can you run 'git bisect' between 2.6.35.3 and 2.6.35.4 to try to find
    > out the offending patch that caused this issue?
    >
    > thanks,
    >
    > greg k-h

    Same for 2.6.35.5 using 256.53

    For your info, I did run some tests today using a nVidia 9500GT

    Kernel | Performance with NVIDIA-Linux-x86_64-
    | 256.53 | 260.19.04 (BETA)
    ----------------------------------------------------------
    2.6.35.3 | good | good
    ----------------------------------------------------------
    2.6.35.4 | bad | not tested
    ----------------------------------------------------------
    2.6.35.5 | bad | ~ good
    ----------------------------------------------------------
    2.6.36-rc4 | |
    (git1-5) | failed | good
    ----------------------------------------------------------
    2.6.36-rc4 | |
    (git1) | failed | good
    ----------------------------------------------------------


    Karsten


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