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Date:      Wed, 10 Dec 2003 12:23:13 -0800
From:      Kris Kennaway <kris@FreeBSD.org>
To:        Mathew Kanner <mat@cnd.mcgill.ca>
Cc:        freebsd-current@freebsd.org
Subject:   Re: Why are sound ioctl calls so slow?
Message-ID:  <20031210202313.GA6275@hub.freebsd.org>
In-Reply-To: <20031209192557.GE11072@cnd.mcgill.ca>
References:  <25518.1070896979@za.uu.net> <20031209192557.GE11072@cnd.mcgill.ca>

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On Tue, Dec 09, 2003 at 02:25:57PM -0500, Mathew Kanner wrote:

> 	My first guess would be the device is rebuilding feeder/mixer
> chains every time mpg123 changes format.  I would run the test one
> more time, disabling vchans and rate conversion.

FWIW, I see this too, without vchans enabled - this problem has
existed for a long time (over a year).  In fact it was the catalyst
for me to stop using mpg123 (in favour of madplay, which seems to be
generally better anyway).

Kris



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