[mythtv-users] Motorola 6200 firewire high def artifacts - Help me debug?

[Andrew Casper]

Greg -

I am also trying to solve an issue with a Motorola firewire box.  
Could you describe the artifacts you are seeing. Do they crash your  
backend? Have you tried switching from a point-to-point connection to  
a broadcast connection? Have you tried increasing the firewire speed  
in MythTVSetup.

- Andrew

On Jul 18, 2006, at 3:16 PM, mythtv-users-request at mythtv.org wrote:

> Message: 2
> Date: Tue, 18 Jul 2006 11:09:24 -0600 (CST)
> From: greg at nodecam.com
> Subject: [mythtv-users] Motorola 6200 firewire high def artifacts -
> 	Help me	debug?
> To: mythtv-users at mythtv.org
> Message-ID: <30305.198.169.6.69.1153242564.squirrel at mail.nodecam.com>
> Content-Type: text/plain; charset=iso-8859-1
>
> I'm /almost/ 100% happy with the firewire recording, except that it  
> has
> spotty and annoying artifacts on high def channels - especially  
> when the
> bitrate gets a little higher.
>
> I have watched the analog output at the same time, and the artifacts
> aren't there.  My initial thoughts are that either my system can't  
> keep up
> with the writes, or I've got a bad cable or something.
>
> I ran hdparm -tT on all three of my drives, and they seem to be  
> reading
> just fine - I'll put the results at the end.  I'm running three  
> Seagate
> Barracuda drives - two SATA and one IDE.
>
> Any thoughts on how I can debug this?  I'm assuming this isn't
> normal/expected.
>
> Thanks in advance!
>
> Greg
> ---
> alfred ~ # hdparm -tT /dev/hda
>
> /dev/hda:
>  Timing cached reads:   3212 MB in  2.00 seconds >  Timing buffered disk reads:  162 MB in  3.02 seconds > alfred ~ # hdparm -tT /dev/sda
>
> /dev/sda:
>  Timing cached reads:   4180 MB in  2.00 seconds >  Timing buffered disk reads:  168 MB in  3.01 seconds > alfred ~ # hdparm -tT /dev/sdb
>
> /dev/sdb:
>  Timing cached reads:   4172 MB in  2.00 seconds >  Timing buffered disk reads:   54 MB in  3.11 seconds >

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