On 2/13/2013 10:28 PM, Tom Easterday wrote:
> I spent the day playing with this on the Intel Atom D2700MUD. I rebuilt the
> system using the rtos-integration-preview3-merged-into-master
> branch. I rebuilt it for another reason (stupid graphics fubar) and figured
> I would try this branch for t
I spent the day playing with this on the Intel Atom D2700MUD. I rebuilt the
system using the rtos-integration-preview3-merged-into-master
branch. I rebuilt it for another reason (stupid graphics fubar) and figured I
would try this branch for the heck of it.
Neither no-halt nor idle=poll had an
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On 2/13/2013 11:52 AM, Michael Haberler wrote:
>
> Am 13.02.2013 um 18:47 schrieb Eric Keller:
>
>> On Wed, Feb 13, 2013 at 12:29 PM, Michael Haberler
>> wrote:
>>
>>> the hlt instruction doesn't work correctly
The hlt instruction works fine, it ju
For this system (amd) the only thing that seems to make a difference is
the idle=poll (no-halt seems to have no effect)
I go from 200+us latency to 7us top.
sam
On 2/13/2013 11:29 AM, Michael Haberler wrote:
> for reference - from
> http://www.kernel.org/doc/Documentation/kernel-parameters.txt
Am 13.02.2013 um 18:52 schrieb Michael Haberler:
>
> well I dont know enough about how the electronics of all this is implemented,
> but if any of the power supply (like onboard SMPS regulators) is involved in
> the CPU voltage reduction of some of these C* states, I wouldnt be suprised
> that
Am 13.02.2013 um 18:47 schrieb Eric Keller:
> On Wed, Feb 13, 2013 at 12:29 PM, Michael Haberler wrote:
>
>> the hlt instruction doesn't work correctly
>>
> It bugs me that in these days of high performance and energy aware
> computers that the hlt command apparently doesn't work properly on a
On Wed, Feb 13, 2013 at 12:29 PM, Michael Haberler wrote:
> the hlt instruction doesn't work correctly
>
It bugs me that in these days of high performance and energy aware
computers that the hlt command apparently doesn't work properly on a lot of
processors. This affects realtime users the most
for reference - from
http://www.kernel.org/doc/Documentation/kernel-parameters.txt
nohlt [BUGS=ARM,SH] Tells the kernel that the sleep(SH) or
wfi(ARM) instruction doesn't work correctly and not to
use it. This is also useful when
