linux-kernel - Re: ZFS with Linux: An Open Plea

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Date:	Mon, 16 Apr 2007 15:26:17 -0400
From:	"Lee Revell" <rlrevell@...-job.com>
To:	"Bernd Eckenfels" <ecki@...a.inka.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: ZFS with Linux: An Open Plea

On 4/16/07, Bernd Eckenfels <ecki@...a.inka.de> wrote:
> In article <4623BE2E.2020800@...6.in-berlin.de> you wrote:
> > I meant that the central requirement on the design and implementation of
> > audio subsystems is an (ideally guaranteed) bounded maximum of
> > latencies; and that's exactly the major point where I heard that there
> > are problems with ALSA driver components in userspace.  You were talking
> > about throughput of storage systems, for which latencies of the software
> > part of the stack do not play such a central role.  Therefore your
> > comparison appeared off the mark to me.
>
> Unfortunatelle Latency is critical for a number of critical applications
> like databases or file based transaction systems (mail, news) - mainly the
> users of fsync().

Whether you mix audio in userspace or kernel does not impact latency -
you still need to schedule the application playing audio every N
milliseconds or there will be dropouts.  I don't see where audio
mixing issue has any relevance to this thread.

Lee
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