From: Robert Hancock <hancockr@shaw.ca>
To: linux-kernel@vger.kernel.org
Subject: Re: Question about not saving power
Date: Wed, 24 Dec 2008 01:02:53 -0600 [thread overview]
Message-ID: <4951DE9D.4050003@shaw.ca> (raw)
In-Reply-To: <200812241050.24804.patrakov@gmail.com>
Alexander E. Patrakov wrote:
> Hello.
>
> I tried playing with some audio apps like JACK and fluidsynth, and noticed the
> following. If I set the parameters in JACK so that the latency becomes less
> than ~10 milliseconds, a faint tone appears in the headphones connected to the
> onboard sound card.
>
> I guess that its frequency is the tone is the same as that of the interrupts
> generated by the sound card. The tone disappears if I run something like
> "while : ; do : ; done" that consumes CPU time continuously, so I guess this
> has something to do with the power-saving features and less-than-perfect PSU.
>
> My question is: what are my options (like kernel parameters) to disable power-
> saving features, other than running such CPU-eating process continuously?
You can try booting with idle=poll on kernel command line, so the CPU
will not enter halt states..
next prev parent reply other threads:[~2008-12-24 7:03 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-24 5:50 Question about not saving power Alexander E. Patrakov
[not found] ` <1230099417.21770.4.camel@marge.simson.net>
2008-12-24 6:38 ` Alexander E. Patrakov
2008-12-24 7:02 ` Robert Hancock [this message]
2008-12-25 7:07 ` Alexander E. Patrakov
2008-12-25 16:16 ` Robert Hancock
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