Subject: Re: [linux-audio-user] performance issues with audio / ripping
From: paul (paul_AT_pksings.com)
Date: Thu Dec 20 2001 - 08:19:27 EET
Wow, definitely sounds like you have conflicting interrupts. Check the
/proc/interrupts file, it lists what is in use. Everything about your
system is in a file in that directory, what modules are in use, how much
memory, ioports being used by everything. You might also want to look
at the /proc/ioports file to make sure everything is using a separate
one, I've never seen two devices use the same one but there's always a
first time.
If you do have conflicting interrupts you can move pci cards to
different slots, that usually changes the interrupt. I have had to
change bios settings for PCI slots to get them all the slots on separate
interrupts though.
I use Grip on a 40 speed ATAPI cdrom and a 40 speed SCSI cdrom and am
able to play mp3's with no dropouts at the same time, on a 450mhz AMD
with 256MB RAM. Something is definitely wrong with your setup based on
what you have stated, that should be a decent performing setup. You
didn't mention your CPU but I'm assuming it's at least at 400.
PK
On Wed, 2001-12-19 at 17:19, Dave Price wrote:
> I am having some issues with audio / ripping performance on an Intel
> debian system.
>
> CPU: p-2/300
> RAM: 256 MB
> Sound card: SB-Live (modules compiled from creative's open source
> drivers)
> XFree86: v4, with blackbox window manager and minimal theme.
>
> Symptoms: When ripping and encoding with Grip (cda2wav and gogo),
> the desktop becomes nearly unusable - mouse pointer hops all over the
> screen and appears to issue 'bogus' clicks whenever it is moved.
>
> It is impossible to play mp3files while ripping is in process, dropouts
> are nearly constant even with mpg123 (command-line player)
>
> Under lighter load, mpg123 usually works okay, although i do get slight
> dropouts when switching between desktops or windows.
>
> Question: I have seen mention of some possible PCI buss issues that may
> be responsible for this... can anyone shed some light on what to look
> for? (The video card is a Number-Nine 'Revolution IV' AGP card.)
>
> Would trying another sound card be worthwhile?
>
> Interesting note: Even while ripping / encoding, I can play mp3 files
> off the same drive that the ripper is using across a network connection
> via samba on windoze laptop with literally NO dropouts observed.
>
> Any other suggestions?
>
> aloha,
> dave
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