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Date:      Sun, 25 Jun 2006 15:09:55 +0100
From:      Simon Morgan <simon@16hz.net>
To:        freebsd-questions@freebsd.org
Subject:   Re: Disk Activity Causes Video Stuttering
Message-ID:  <20060625140955.GA4182@bollo.16hz.net>
In-Reply-To: <20060625110028.GA14664@bollo.16hz.net>
References:  <20060625110028.GA14664@bollo.16hz.net>

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On Sun, Jun 25, 2006 at 12:00:28PM +0100, Simon Morgan wrote:
> I'm having trouble with mplayer that seems to be highlighting a bug or general
> inefficiency in the ata driver when used with the VIA VT8235 chipset used in
> the ASUS A7V8X motherboard.
> 
> The problem is that whenever a video is being played and there is any
> reasonable amount of disk activity (e.g dd if=/dev/urandom of=test), the video
> skips and the mplayer status shows that it's had to drop frames to keep the
> video and audio in sync.

I've made some discoveries that discredit my previous assertion that the ata
driver is to blame. I created a memory disk using mdconfig and copied a video to
it and still got dropped frames when when performing the above command.

I had somebody who owns a different motherboard but which uses the same IDE
chipset to perform the same steps and he didn't experience any dropped frames.

-- 
Never let your schooling interfere with your education.



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