Hi
Sorry for cross posting, but I figured the solution to my problem could
be with both csound and my linux/kernel setup, so here goes:
When running csound5 under X I get "WARNING: Buffer underrun in
real-time audio output" from csound accompanied by a click, whenever I
"do something", including tab'ing from xterm to xterm. Looking at top I
figure a solution would be to have csound run with lower nice value or
higher priority. Is that a viable solution?
If so, where do I change these settings and which should I change and to
what?
I have this in my .csoundrc:
-+rtaudio=alsa
-o devaudio:hw:1
--sched
--expression-opt
-b 64
-B 256
-d
-m 7
-M 0
I have a patched 2.6.15.6-rt21 kernel and run debian/stable on a pentium
4, 2.4GHz laptop with a edirol UA1A usb soundcard. I didn't "do
anything" with my IRQ's since I don't know how to or if it's nessecary...
Here's a snapshot of the beginning of top:
Tasks: 91 total, 2 running, 89 sleeping, 0 stopped, 0 zombie
Cpu(s): 44.9% us, 31.6% sy, 0.0% ni, 23.6% id, 0.0% wa, 0.0% hi, 0.0% si
Mem: 514848k total, 365216k used, 149632k free, 24720k buffers
Swap: 1004052k total, 0k used, 1004052k free, 208536k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
5704 atte 15 0 34968 32m 1872 S 48.9 6.4 0:34.13 csound
1617 root -43 -5 0 0 0 S 25.3 0.0 0:02.91 IRQ 10
777 root -49 -5 0 0 0 S 1.3 0.0 0:02.17 IRQ 8
2 root -2 0 0 0 0 S 0.3 0.0 0:00.36
softirq-high/0
1797 root -42 -5 0 0 0 S 0.3 0.0 0:16.23 IRQ 5
3177 root 15 0 99568 31m 2932 S 0.3 6.2 3:11.25 XFree86
1 root 16 0 1584 516 452 S 0.0 0.1 0:00.15 init
3 root -2 0 0 0 0 S 0.0 0.0 0:00.03
softirq-timer/0
4 root -2 0 0 0 0 S 0.0 0.0 0:00.00
softirq-net-tx/
5 root -2 0 0 0 0 S 0.0 0.0 0:01.90
softirq-net-rx/
6 root -2 0 0 0 0 S 0.0 0.0 0:00.00
softirq-scsi/0
7 root -2 0 0 0 0 S 0.0 0.0 0:06.63
softirq-tasklet
8 root 5 -10 0 0 0 S 0.0 0.0 0:00.02 desched/0
9 root -2 -5 0 0 0 S 0.0 0.0 0:00.29 events/0
10 root 14 -5 0 0 0 S 0.0 0.0 0:00.00 khelper
11 root 11 -5 0 0 0 S 0.0 0.0 0:00.00 kthread
13 root 10 -5 0 0 0 S 0.0 0.0 0:00.02 kblockd/0
--
peace, love & harmony
Atte
http://www.atte.dk | quartet: http://www.anagrammer.dk
http://www.atte.dk/gps | compositions: http://www.atte.dk/compositions
