Subject: Re: [linux-audio-user] xruns vs. disk activity
From: rob fell (robin.fell_AT_ntlworld.com)
Date: Thu Apr 24 2003 - 01:22:42 EEST
Hi Alex
> i see that both your mouse (?!) and your network card seem to have
> higher priority than your IDE channels (harddisks).
> i would advice you to try without the network card and not to move
> your mouse =)
believe it or not i did try an "ifconfig eth0 down" to see if it would improve
the situation! (i did say i was getting desperate).
> and what Mark Knecht said about period size for the SB soundcards is
> also slightly touched here: http://www.djcj.org/LAU/jack/
> your 128 setting might be too small. did you try with 256 or 512?
looks like no-one is using anything as cruddy as a SB128 PCI anymore (and with
good reason).
when Mark suggested that the card might not be man-enough for the job i
realised that my internal model of how a soundcard works might be a little
naive - i suspect it has more than a lump of DP ram and some counters :)
i set the buffersize smaller to try to act as a crude filter to make my awk
script simpler - though this neglects the effect on the card itself of
running at a higher rate.
the most success so far with the testing seems to be at 1024 - though large
file copies causes massive xruns at any rate (BTW: how large would a 'large'
file be?).
i can't decide whether to gamble on the purchase of a decent card and hope
this all goes away, or whether to read the alsa driver code for the card to
see if i can work out just how bad the card really is :(
>
> and ofcourse... good luck.
looks like i may need it - and some more spare time. thanks.
R
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