Sorry, for some reason I thought I was going to have to build a new
kernel.
I set my HZ to 100 in the loader.conf, and it did lower the pitch of
the whine to where I can hardly hear it now. I can still hear a
difference when I toggle the CPU halt off and on, but the difference
between 1000 and 100 HZ is like night and day.
Thank you very much, my ears appreciate it. :)
Paul Lipps
[EMAIL PROTECTED]
Begin forwarded message:
From: Paul Lipps <[EMAIL PROTECTED]>
Date: June 6, 2006 4:01:48 AM CDT
To: Joseph Koshy <[EMAIL PROTECTED]>
Cc: [email protected]
Subject: Re: High Pitched Whine
On Jun 6, 2006, at 1:10 AM, Joseph Koshy wrote:
The only thing that I can think of that could think of that
could whine is a flaky magnetic component.
Does the frequency of the whine change if you change HZ?
Does the whine reduce if the processor is fully compute
bound?
Yes, the whine actually goes away under a full load. It is
intermittent when the CPU is being stressed intermittently, and of
course constant when the CPU is idle.
I am going to try compiling a new kernel with a reduced HZ setting
as suggested. Is the output of this command:
sysctl kern.clockrate
displaying the current HZ setting? If so it's 1000 at the moment. I
will compile a new kernel using the GENERIC configuration file with
only the HZ option changed to 100 rather then 1000 and report my
findings.
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