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Date:      Thu, 21 Oct 2004 18:42:30 -0700 (PDT)
From:      Doug White <dwhite@gumbysoft.com>
To:        Travis Poppe <tlp@LiquidX.org>
Cc:        freebsd-current@freebsd.org
Subject:   Re: Mild sound distortion with FreeBSD 5.3-BETA7
Message-ID:  <20041021184144.U41366@carver.gumbysoft.com>
In-Reply-To: <20041021145448.07c993d3@maya.liquidx.org>
References:  <20041019111518.1f6a76a4@maya.liquidx.org> <20041021145448.07c993d3@maya.liquidx.org>

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On Thu, 21 Oct 2004, Travis Poppe wrote:

> > > I've recently noticed a mild sound distortion in XMMS and other
> > > applications that output sound. I'm not sure when I started noticing
> > > this, but I don't believe it has always been present in the 5.x
> > > branch(and if it has, I haven't noticed it up until a month or two
> > > ago).
> >
> > Problems with sound disruptions can usually be traced to running with
> > WITNESS and/or INVARIANTS compiled into your kernel. These debugging
> > options cause enough interrupt latency to cause sound problems.  Even
> > setting the sysctl debug.witness_watch=0 (I guess its
> > debug.witness.watch=0 now) will usually clear the issue right away, or
> > reduce the disruptions significantly (for that boot only).
>
> I don't have these debugging options compiled into my kernel, so it must
> be something else.

Anything sharing the your sound card's interrupt?

-- 
Doug White                    |  FreeBSD: The Power to Serve
dwhite@gumbysoft.com          |  www.FreeBSD.org



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