19 Nov
2005
19 Nov
'05
8:21 p.m.
Hi,
I can get 11ms without issues or 5ms (sometimes even
less when the
setup is simple) with this card. But on some distros I had to disable
my ethernet adapter. Are you sure you don't have some heavy process
or server running?
No server or process is running, except for KDE ;-) .
It is likely that my interrupts cause problems. Thanks to the post of
"thewade" I found on my machine:
cat /proc/interrupts
CPU0
0: 1320101 XT-PIC timer
1: 3169 XT-PIC i8042
2: 0 XT-PIC cascade
8: 2 XT-PIC rtc
11: 1311823 XT-PIC Intel 82801CA-ICH3, Intel 82801CA-ICH3
Modem, uhci_hcd:usb1, uhci_hcd:usb2,eth0, yenta, yenta, ohci1394,
nvidia
12: 114 XT-PIC i8042
14: 51597 XT-PIC ide0
NMI: 0
LOC: 0
ERR: 0
MIS: 0
It seems that interrupt 11 is a bit overcrowded, but I have no clue how
to put the USB bus to another IRQ.
Also, I load the realtime module with the parameter
any=1. I know
this could be less stable, but its worth if you need to record your
music without interruptions and with a low latency.
If I understood correctly, the realtime module does nothing else than
grant non-root-users access to realtime priorities. It doesn't change
any further latency settigns on your machine.
p.s. Please guys help me with my UA-20. :-(
I'm sorry, but I really have no knowledge to help you on this issue.
Best regards
ce
»Wer Visionen hat, sollte zum Arzt gehen« (Helmut Schmidt)