[LAU] Jack shots down or creates xruns

Hi there I have a problem with jack. I have a Edirol fa-101 firewire soundcard on amd processer (2500+) with 512Mb RAM. If i have low frames/period setting ( 128) jack shots down after short time (2 - 20 sec or almost instantly if I run a program; ardour or openoffice) or if I have a high frames/period setting (1024) I get xruns. I have tried almost every setting possible and tried changing nice values on the firewire card and a lot of other stuff. Can anyone help? Kind Regards Thomas Here is a uname -a Linux thomas-laptop 2.6.31-10-rt #153-Ubuntu SMP PREEMPT RT Tue Jan 12 10:42:21 UTC 2010 i686 GNU/Linux thomas@thomas-laptop:~$ cat .jackdrc /usr/bin/jackd -P82 -t2000 -m -dfirewire -r44100 -p1024 -n3 First jack messages when framesperiod is 128: 13:32:19.478 Patchbay deactivated. 13:32:19.503 Statistics reset. 13:32:19.713 ALSA connection graph change. 13:32:20.223 ALSA connection change. 13:33:28.994 Startup script... 13:33:28.996 artsshell -q terminate sh: artsshell: not found 13:33:29.400 Startup script terminated with exit status=32512. 13:33:29.401 JACK is starting... 13:33:29.402 /usr/bin/jackd -P82 -t2000 -m -dfirewire -r44100 -p128 -n3 jackd 0.118.0 Copyright 2001-2009 Paul Davis, Stephane Letz, Jack O'Quinn, Torben Hohn and others. jackd comes with ABSOLUTELY NO WARRANTY This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details Memory locking is unlimited - this is dangerous. You should probably alter the line: @audio - memlock unlimited in your /etc/limits.conf to read: @audio - memlock 427074 13:33:29.436 JACK was started with PID=5101. no message buffer overruns JACK compiled with System V SHM support. loading driver .. libffado 2.0.0 built Mar 31 2010 14:47:42 13:33:31.527 Server configuration saved to "/home/thomas/.jackdrc". 13:33:31.531 Statistics reset. 13:33:31.534 Client activated. 13:33:31.537 JACK connection change. 13:33:31.552 JACK connection graph change. firewire ERR: wait status < 0! (= -1) DRIVER NT: could not run driver cycle 13:33:45.166 JACK connection graph change. 13:33:45.251 JACK connection change. jack main caught signal 12 no message buffer overruns zombified - calling shutdown handler 13:33:45.334 Shutdown notification. 13:33:45.337 JACK is stopping... 13:33:45.338 JACK is being forced... 13:33:45.539 JACK was stopped successfully. 13:33:45.540 Post-shutdown script... 13:33:45.541 killall jackd jackd: no process found 13:33:45.958 Post-shutdown script terminated with exit status=256. Second when framesperiod is 1024: 13:35:54.240 Patchbay deactivated. 13:35:54.259 Statistics reset. 13:35:54.375 ALSA connection graph change. 13:35:54.762 ALSA connection change. 13:37:02.730 Startup script... 13:37:02.731 artsshell -q terminate sh: artsshell: not found 13:37:03.137 Startup script terminated with exit status=32512. 13:37:03.138 JACK is starting... 13:37:03.139 /usr/bin/jackd -P82 -t2000 -m -dfirewire -r44100 -p1024 -n3 jackd 0.118.0 Copyright 2001-2009 Paul Davis, Stephane Letz, Jack O'Quinn, Torben Hohn and others. jackd comes with ABSOLUTELY NO WARRANTY This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details Memory locking is unlimited - this is dangerous. You should probably alter the line: @audio - memlock unlimited in your /etc/limits.conf to read: @audio - memlock 427074 13:37:03.176 JACK was started with PID=5140. no message buffer overruns JACK compiled with System V SHM support. loading driver .. libffado 2.0.0 built Mar 31 2010 14:47:42 13:37:05.304 Server configuration saved to "/home/thomas/.jackdrc". 13:37:05.319 Statistics reset. 13:37:05.346 Client activated. 13:37:05.373 JACK connection graph change. 13:37:06.047 JACK connection graph change. 13:37:06.240 JACK connection change. 13:37:09.708 XRUN callback (1). 13:37:15.710 XRUN callback (2). 13:37:45.718 XRUN callback (3). 13:38:09.713 XRUN callback (4). 13:38:15.718 XRUN callback (5). 13:38:39.713 XRUN callback (6). 13:38:45.716 XRUN callback (7). 13:39:09.711 XRUN callback (8). 13:39:15.714 XRUN callback (9). 13:39:39.713 XRUN callback (10). 13:39:45.714 XRUN callback (11). 13:40:09.711 XRUN callback (12). 13:40:15.713 XRUN callback (13). 13:40:45.722 XRUN callback (14). 13:41:09.715 XRUN callback (15). 13:41:15.720 XRUN callback (16). 13:41:45.707 XRUN callback (17). thomas@thomas-laptop:~$ cat /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 6 model : 10 model name : Mobile AMD Athlon(tm) XP 2500+ stepping : 0 cpu MHz : 1855.000 cache size : 512 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mp mmxext 3dnowext 3dnow up bogomips : 3710.02 clflush size : 32 power management: ts fid vid Here is cat/proc interrupts CPU0 0: 7412489 XT-PIC-XT timer 1: 5159 XT-PIC-XT i8042 2: 0 XT-PIC-XT cascade 3: 1 XT-PIC-XT 4: 1 XT-PIC-XT 5: 1 XT-PIC-XT 6: 1 XT-PIC-XT 7: 1 XT-PIC-XT 8: 0 XT-PIC-XT rtc0 9: 1969 XT-PIC-XT acpi 10: 445734 XT-PIC-XT ohci1394, yenta, radeon@pci:0000:01:05.0 11: 32807 XT-PIC-XT ehci_hcd:usb1, ohci_hcd:usb2, ohci_hcd:usb3, eth0, ALI 5451 12: 292660 XT-PIC-XT i8042 14: 35966 XT-PIC-XT pata_ali 15: 111856 XT-PIC-XT pata_ali NMI: 0 Non-maskable interrupts LOC: 0 Local timer interrupts SPU: 0 Spurious interrupts CNT: 0 Performance counter interrupts PND: 0 Performance pending work RES: 0 Rescheduling interrupts CAL: 0 Function call interrupts TLB: 0 TLB shootdowns TRM: 0 Thermal event interrupts THR: 0 Threshold APIC interrupts MCE: 0 Machine check exceptions MCP: 25 Machine check polls ERR: 0 MIS: 0 * My Firewire card:* thomas@thomas-laptop:~$ lspci | grep Fire 00:0a.1 FireWire (IEEE 1394): Texas Instruments PCI4410 FireWire Controller (rev 02) *Htop:* RT -5 0 0 0 S 0.0 0.0 0:00.00 migration/0 13 root RT -5 0 0 0 S 0.0 0.0 0:00.00 posixcputmr/0 14 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/0 4565 thomas -93 0 89936 8016 6000 S 0.0 1.4 0:00.00 /usr/bin/jackd -P82 -t2000 -m -dfirewire -r44100 -p1024 -n3 643 root -91 -5 0 0 0 S 0.0 0.0 0:00.00 irq/8-rtc0 4562 thomas -84 0 89936 8016 6000 S 7.0 1.4 0:04.03 /usr/bin/jackd -P82 -t2000 -m -dfirewire -r44100 -p1024 -n3 4566 thomas -83 0 89936 8016 6000 S 1.0 1.4 0:00.84 /usr/bin/jackd -P82 -t2000 -m -dfirewire -r44100 -p1024 -n3 4563 thomas -82 0 89936 8016 6000 S 6.0 1.4 0:03.65 /usr/bin/jackd -P82 -t2000 -m -dfirewire -r44100 -p1024 -n3 603 root -81 -5 0 0 0 S 0.0 0.0 0:00.00 irq/11-ehci_hcd 608 root -81 -5 0 0 0 S 0.0 0.0 0:00.00 irq/11-ohci_hcd 612 root -80 -5 0 0 0 S 0.0 0.0 0:00.00 irq/11-ohci_hcd 4570 thomas -78 0 68688 22936 17744 S 0.0 4.0 0:00.19 /usr/bin/qjackctl.bin 629 root -76 -5 0 0 0 S 0.0 0.0 0:00.03 irq/1-i8042 628 root -75 -5 0 0 0 S 0.0 0.0 0:01.00 irq/12-i8042 517 root -51 -5 0 0 0 S 0.0 0.0 0:00.04 irq/14-pata_ali 518 root -51 -5 0 0 0 S 0.0 0.0 0:00.09 irq/15-pata_ali 187 root -51 -5 0 0 0 S 0.0 0.0 0:00.00 irq/9-acpi 853 root -51 -5 0 0 0 S 0.0 0.0 0:00.42 irq/10-ohci1394 3571 root -51 -5 0 0 0 S 0.0 0.0 0:00.31 irq/10-yenta 3648 root -51 -5 0 0 0 S 0.0 0.0 0:00.00 irq/11-ALI 5451 3708 root -51 -5 0 0 0 S 0.0 0.0 0:00.00 irq/11-eth0 4091 root -51 -5 0 0 0 S 0.0 0.0 0:00.22 irq/10-radeon@p 5 root -50 -5 0 0 0 S 0.0 0.0 0:01.52 sirq-timer/0 8 root -50 -5 0 0 0 S 0.0 0.0 0:00.26 sirq-block/0 12 root -50 -5 0 0 0 S 0.0 0.0 0:00.22 sirq-rcu/0 4 root -50 -5 0 0 0 S 0.0 0.0 0:00.00 sirq-high/0 6 root -50 -5 0 0 0 S 0.0 0.0 0:00.00 sirq-net-tx/0 7 root -50 -5 0 0 0 S 0.0 0.0 0:00.00 sirq-net-rx/0 9 root -50 -5 0 0 0 S 3.0 0.0 0:01.81 sirq-tasklet/0 10 root -50 -5 0 0 0 S 0.0 0.0 0:00.00 sirq-sched/0 11 root -50 -5 0 0 0 S 0.0 0.0 0:00.00 sirq-hrtimer/0 17 root -2 -5 0 0 0 S 0.0 0.0 0:00.06 events/0 4561 thomas -2 0 89936 8016 6000 S 0.0 1.4 0:00.00 /usr/bin/jackd -P82 -t2000 -m -dfirewire -r44100 -p1024 -n3