And where can I see hardware realization? It is just an infinite loop? Or
MWAIT? Or drop to C6 state?
Or this abstract for OEM decided what to do?
On 05 марта 2014 г., at 19:38, Andrew Fish <af...@apple.com> wrote:
>
> On Mar 5, 2014, at 4:58 AM, Sergey Isakov <isakov...@bk.ru> wrote:
>
>> Sorry, CPU stress test? What is your purpose, to burn out your CPU?
>> At boot stage CPU works on one core and on maximum speed not regarding what
>> process is performed. It will not heated more or less.
>> CPU will heated at the same rate no matter what application is started.
>>
>
> Given EFI has an event model code that is running will burn a lot of power,
> making the APs do work would increase the workload on the system.
>
> The main power saving feature in the edk2 is the gIdleLoopEventGuid GUIDed
> event. This allows the system to go into a lower power mode while a
> gBS->WaitForEvent() call is running. Generally the DXE CPU driver produces
> this event. The gIdleLoopEventGuid event is signaled when there is no
> forward progress being made. At this point a timer tick must fire to make
> forward progress so the gIdleLoopEventGuid event idles the system until the
> next timer tick.
>
> When you are sitting a the shell prompt waiting for input the system is in a
> lower power state.
>
> Thanks,
>
> Andrew Fish
>
> https://svn.code.sf.net/p/edk2/code/trunk/edk2/MdeModulePkg/Core/Dxe/Event/Event.c
> search for gIdleLoopEvent
>
>> On 05.03.2014, at 11:12, ritul guru (riguru) wrote:
>>
>>> Hi,
>>> Is there any efi utility for CPU stress test, like mprime, prime95 (which
>>> are windows utility)?
>>>
>>>
>>> Regards,
>>> Ritul
>>>
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