Re: CD Audio Interferes with Modem.

["Al Gatton" <al@gatton.org>]

Could it be possible that the CD audio is so busy reading from the drive
that the interrupt driven device is not allowing the processor to 'see' all
the ping requests in order to reply to them? try the pings while writing
(with verify) to a floppy drive, I would expect 'some' loss but not nearly
as bad as the CD ROM.


----- Original Message ----- 
From: "Tesla Coil" <tescoil@ilbbs.com>
To: <luci-discuss@luci.org>
Sent: Sunday, December 15, 2002 6:29 PM
Subject: CD Audio Interferes with Modem.


> This is a weird one -- I thought at first that it was merely
> a Frequently Recurring Coincidence...
>
> - Audio CD off, ping:
>
>  30 packets transmitted, 30 received, 0% loss, time 29319ms
>  rtt min/avg/max/mdev = 159.550/159.917/159.967/0.510 ms
>
> - Start audio CD, repeat ping:
>
>  30 packets transmitted, 17 received, 43% loss, time 160849ms
>  rtt min/avg/max/mdev = 149.831/166.896/259.890/23.719 ms
>
> - Audio CD off, repeat ping:
>
>  30 packets transmitted, 30 received, 0% loss, time 29299ms
>  rtt min/avg/max/mdev = 149.951/160.895/169.934/3.964 ms
>
> - Start audio CD, repeat ping:
>
>  30 packets transmitted, 25 received, 16% loss, time 203419ms
>  rtt min/avg/max/mdev = 159.514/175.010/379.760/48.902 ms
>
> Modem on IRQ 3; audio card on IRQ 4; CDROM on IRQ 15.
>
> A similar unresolved report of this from 1999.  We have in
> common external modems, but he says he has no problem with
> regular audio CDs--my problems have been regular audio CDs.
> http://lists.suse.com/archive/suse-linux-e/1999-Jun/2648.html
>
>
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