Date: Wed, 26 Jan 2005 02:15:56 -0600 From: Nikolas Britton <freebsd@nbritton.org> To: Derek <derekm@rogers.com> Cc: collin.mcclendon@hotmail.com Subject: Re: Xmms FreeBSD and buzzing or skipping sound Message-ID: <41F751BC.5020408@nbritton.org> In-Reply-To: <41F06178.6060804@rogers.com> References: <%XxUc.21343$pT5.19608@lakeread05> <41F06178.6060804@rogers.com>
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Derek wrote:
> Collin McClendon wrote:
>
>> I've noticed for quite some time (at least on 5.x even before
>> -CURRENT) that if I'm unzipping or tarring a file that it is enough
>> to make xmms play mp3s with intermittent buzzing. I have a fairly
>> fast machine, dual athlon 1.53 Ghz with 1 GB of ram and a fully scsi
>> setup, 4 10K maxtors in a Raid 0 stripe set.
>
>
> Did you ever find a solution to this Collin?
>
> I've got a 5.3-STABLE SMP machine, with a promise RAID controller,
> RAID1, with snd_emu10k1.ko, and I get the same results... Re-nicing
> xmms doesn't help either...
>
> Cheers,
> Derek
>
I noticed that no one has suggested this thus far so...
#sysctl hw.snd
#man sound
Runtime Configuration
The following sysctl(8) variables are available:
hw.snd.pcm%d.buffersize Configure the amount of DMA
bufferspace
available for a device.
hw.snd.targetirqrate Set the default block size such that
continuous playback will achieve this
IRQ rate. This value can be tuned to
improve application performance.
Increase this value when the
sound lags
and decrease it if sound stutters or
breaks up.
My /boot/loader.conf:
hw.snd.targetirqrate=48
hint.pcm.0.buffersize="8192"
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