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Date: Wed, 8 Jun 2005 09:57:15 -0400 (EDT)
From: Jeff Roberson <jroberson@chesapeake.net>
To: Jean-Yves Lefort <jylefort@freebsd.org>
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Cc: Simon Barner <barner@freebsd.org>, current@freebsd.org
Subject: Re: Sound skipping problems
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On Wed, 8 Jun 2005, Jean-Yves Lefort wrote:

> On Wed, 8 Jun 2005 12:48:44 +0200
> Simon Barner <barner@FreeBSD.org> wrote:
>
> > Jeff Roberson wrote:
> > > I have a patch that should greatly improve the sound skipping problems
> > > people have under heavy io load.  Several people sent me traces that
> > > showed the buf daemon running for hundreds of milliseconds with Giant
> > > held, which can hold up the pcm code.  The patch is available at:
> > >
> > > http://www.chesapeake.net/~jroberson/flushbuf.diff
> >
> > [...]
> >
> > Can I use the patch on 5.4-STABLE? It applies cleanly (with offset,
> > though), but I prefer to ask before doing useless tests.
>
> I've just tested it on 5.4-RELEASE, and it causes the system to hang
> after a few seconds of heavy disk I/O.

I have updated the patch to partially revert some earlier behavior.  The
hang didn't happen on my machine because I have more memory, but I'm
confident of the cause.  I updated it in place, feel free to try it on
current or 5.x.

Thanks,
Jeff

>
> --
> Jean-Yves Lefort
>
> jylefort@FreeBSD.org
> http://lefort.be.eu.org/
>