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Date:      Wed, 23 May 2001 10:27:44 +0200
From:      Vallo Kallaste <vallo@matti.ee>
To:        Alex Zepeda <jazepeda@pacbell.net>
Cc:        Vallo Kallaste <vallo@matti.ee>, current@FreeBSD.ORG
Subject:   Re: What's causing troubles with pcm?
Message-ID:  <20010523102744.A78465@myhakas.matti.ee>
In-Reply-To: <20010522162938.A43750@zippy.mybox.zip>; from jazepeda@pacbell.net on Tue, May 22, 2001 at 04:29:39PM -0700
References:  <20010522161347.A54429@myhakas.matti.ee> <20010522162938.A43750@zippy.mybox.zip>

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On Tue, May 22, 2001 at 04:29:39PM -0700, Alex Zepeda <jazepeda@pacbell.net> wrote:

> > Playing mp3's with mpg123 has been quite satistfactory until now.
> > Today I've discovered that every execution of sync(8) distorts
> > music by means of "stretching" musical phrase. 
> 
> The obvious answer would be to not run sync(8) :^)
> 
> Likely, what you're seeing is the combo of the pcm driver being pretty
> sensitive to other interrupt activity and the ata driver turning off write
> caching by default.

Probably not, because the sound file was on SCSI disk and I have WC
turned on for both ATA disks I have. Sync(8) was only for
demonstration purposes.
-- 

Vallo Kallaste
vallo@matti.ee

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