2.6.27-rc8: throttling broken - Kernel

This is a discussion on 2.6.27-rc8: throttling broken - Kernel ; Hi! On 2.6.27-rc8 on via/fic subnotebook, throttling seems to be broken. I can do echo 15 > /proc/acpi/processor/*/throttling, and proc file reflects new value, but cpu still runs at same speed. It worked on opensuse11/sled10 kernels at least... Pavel -- ...

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Thread: 2.6.27-rc8: throttling broken

  1. 2.6.27-rc8: throttling broken

    Hi!

    On 2.6.27-rc8 on via/fic subnotebook, throttling seems to be broken. I
    can do echo 15 > /proc/acpi/processor/*/throttling, and proc file
    reflects new value, but cpu still runs at same speed.

    It worked on opensuse11/sled10 kernels at least...
    Pavel
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  2. Re: 2.6.27-rc8: throttling broken

    On Thursday, 9 of October 2008, Pavel Machek wrote:
    > Hi!
    >
    > On 2.6.27-rc8 on via/fic subnotebook, throttling seems to be broken. I
    > can do echo 15 > /proc/acpi/processor/*/throttling, and proc file
    > reflects new value, but cpu still runs at same speed.
    >
    > It worked on opensuse11/sled10 kernels at least...


    Any chance to check 2.6.26.x on that?

    Thanks,
    Rafael
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  3. Re: 2.6.27-rc8: throttling broken

    On Thu, 2008-10-09 at 23:27 +0200, Rafael J. Wysocki wrote:
    > On Thursday, 9 of October 2008, Pavel Machek wrote:
    > > Hi!
    > >
    > > On 2.6.27-rc8 on via/fic subnotebook, throttling seems to be broken. I
    > > can do echo 15 > /proc/acpi/processor/*/throttling, and proc file
    > > reflects new value, but cpu still runs at same speed.
    > >
    > > It worked on opensuse11/sled10 kernels at least...

    After echo 15 > /proc/acpi/processor/*/throttling, what T-state is
    displayed by cat /proc/acpi/processor/*/throttling?

    If you do the above test on the 2.6.26.x kernel, what T-state is
    displayed ?
    Thanks.
    >
    > Any chance to check 2.6.26.x on that?
    >
    > Thanks,
    > Rafael
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    > To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
    > the body of a message to majordomo@vger.kernel.org
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  4. Re: 2.6.27-rc8: throttling broken

    On Thu 2008-10-09 23:27:25, Rafael J. Wysocki wrote:
    > On Thursday, 9 of October 2008, Pavel Machek wrote:
    > > Hi!
    > >
    > > On 2.6.27-rc8 on via/fic subnotebook, throttling seems to be broken. I
    > > can do echo 15 > /proc/acpi/processor/*/throttling, and proc file
    > > reflects new value, but cpu still runs at same speed.
    > >
    > > It worked on opensuse11/sled10 kernels at least...

    >
    > Any chance to check 2.6.26.x on that?


    2.6.26 seems to be okay, and my thinkpad seems to be okay, too...
    Pavel
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  5. Re: 2.6.27-rc8: throttling broken

    On Fri 2008-10-10 09:12:05, Zhao Yakui wrote:
    > On Thu, 2008-10-09 at 23:27 +0200, Rafael J. Wysocki wrote:
    > > On Thursday, 9 of October 2008, Pavel Machek wrote:
    > > > Hi!
    > > >
    > > > On 2.6.27-rc8 on via/fic subnotebook, throttling seems to be broken. I
    > > > can do echo 15 > /proc/acpi/processor/*/throttling, and proc file
    > > > reflects new value, but cpu still runs at same speed.
    > > >
    > > > It worked on opensuse11/sled10 kernels at least...

    > After echo 15 > /proc/acpi/processor/*/throttling, what T-state is
    > displayed by cat /proc/acpi/processor/*/throttling?


    IIRC that worked correctly. I.e. "*" moved to T15.

    > If you do the above test on the 2.6.26.x kernel, what T-state is
    > displayed ?


    Throttling seems to work there and T15 is correctly marked by "*".

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