System (motherboard/CPU?) emits high pitch noise when processor.ko is loaded.

System (motherboard/CPU?) emits high pitch noise when processor.ko is loaded.

[Justin Piszcz]

Just a finding I'd like to report:

   | |    <M>   Processor
   | |    <M>     Thermal Zone (NEW)

When the processor module is loaded, it works fine, no issues with the 
system etc but it emits a high pitch noise, without this module, the noise 
is absent, not sure what its doing but FYI.

Justin.

Re: System (motherboard/CPU?) emits high pitch noise when processor.ko is loaded.

[Andreas Mohr]

And that's news exactly how? ;)
Systems and their switching regulators (and especially their backing
coils) have been making noise for more than half a decade now,
depending on which activities frequency is currently taking place
on the system.

OTOH this means that in your case, maybe some interval in the processor module
(or somewhere related) is ill-chosen (leading to significant, audible differences
between busy/idle state) and should be changed.

For example, with HZ settings 100 can cause quite a bit of noise on some
machines, whereas 1000 is better, IIRC. And that could be similar for some
processing in this module.

Andreas

Re: System (motherboard/CPU?) emits high pitch noise when processor.ko is loaded.

[Justin Piszcz]

On Wed, 14 Oct 2009, Andreas Mohr wrote:

> And that's news exactly how? ;)
> Systems and their switching regulators (and especially their backing
> coils) have been making noise for more than half a decade now,
> depending on which activities frequency is currently taking place
> on the system.
>
> OTOH this means that in your case, maybe some interval in the processor module
> (or somewhere related) is ill-chosen (leading to significant, audible differences
> between busy/idle state) and should be changed.
>
> For example, with HZ settings 100 can cause quite a bit of noise on some
> machines, whereas 1000 is better, IIRC. And that could be similar for some
> processing in this module.
>
> Andreas
>

Hi,

Ok, well I never had that happen before when loading that module-- 
although I never normally ran it except for testing purposes, so it was news
to me :)

CPU was i870 & mobo = DP55KG for reference and I use a HZ setting of 1000.

Justin.