On Sat, 03 Nov 2012 11:32:21 +0100 Florian Paul Schmidt <mista.tapas@xxxxxxx> wrote: > On 11/03/2012 10:40 AM, Ralf Mardorf wrote: > > I noticed something interesting about kernel 3.6.5-rt14. > > [..] > > > Unfortunately it didn't solve xrun issues for the RME card. However, > > the kernel does switch to another IRQ for the graphics, for all > > other kernels on different distros, the graphics always gets IRQ18, > > also if I switch the integrated ATI with a Nvidia. > > > > Hi, this is a long shot, but you might play around with the PCI bus > latency settings for different devices.. I.e. turn them down from the > default value and see if it helps at all. I'm no expert in this, so > make sure to read up on the subject. > > http://www.mythtv.org/wiki/PCI_Latency > > Maybe some device (most probably a GPU or a NIC) holds on to the PCI > bus for too long.. > > Flo Thank you Flo :) if I remove all USB stuff I still see irq/18-ohci_hcd [1]. Regards, Ralf [1] $ top 2583 spinymou 20 0 1155m 310m 107m S 9.3 8.4 3:09.87 qtractor 2827 spinymou 20 0 392m 47m 21m S 1.7 1.3 0:05.03 plugin-containe 2562 spinymou 20 0 275m 89m 82m S 1.3 2.4 0:27.17 jackd 15 root -2 0 0 0 0 S 1.0 0.0 0:04.39 ksoftirqd/1 1264 root 20 0 150m 36m 14m S 1.0 1.0 1:05.48 Xorg 2577 spinymou 20 0 536m 110m 100m S 1.0 3.0 0:10.23 qjackctl.real 2785 spinymou 20 0 922m 139m 43m S 0.7 3.8 0:37.66 firefox 58 root -79 0 0 0 0 S 0.3 0.0 0:02.06 irq/18-ohci_hcd 60 root -78 0 0 0 0 S 0.3 0.0 0:03.43 irq/18-ohci_hcd 849 root -86 0 0 0 0 S 0.3 0.0 0:05.95 irq/18-snd_hdsp 2159 spinymou 20 0 163m 14m 9m S 0.3 0.4 0:08.91 panel-25-weathe 2487 spinymou 20 0 476m 18m 13m S 0.3 0.5 0:04.61 xfce4-terminal 1 root 20 0 24432 2320 1272 S 0.0 0.1 0:01.27 init spinymouse@qrc:~$ cat /proc/interrupts | grep 18 18: 0 752885 IO-APIC-fasteoi ohci_hcd:usb4, ohci_hcd:usb6, snd_hdspm spinymouse@qrc:~$ /etc/init.d/rtirq status PID CLS RTPRIO NI PRI %CPU STAT COMMAND 62 FF 90 - 130 0.0 S irq/8-rtc0 849 FF 85 - 125 0.1 S irq/18-snd_hdsp 908 FF 85 - 125 0.0 S irq/20-snd_ice1 911 FF 85 - 125 0.0 S irq/21-snd_ice1 54 FF 80 - 120 0.0 S irq/19-ehci_hcd 55 FF 80 - 120 0.0 S irq/16-ohci_hcd 56 FF 79 - 119 0.0 S irq/17-ohci_hcd 58 FF 78 - 118 0.0 S irq/18-ohci_hcd 59 FF 78 - 118 0.0 S irq/17-ohci_hcd 60 FF 77 - 117 0.0 S irq/18-ohci_hcd 61 FF 75 - 115 0.0 S irq/1-i8042 24 FF 50 - 90 0.0 S irq/9-acpi 46 FF 50 - 90 0.0 S irq/22-ahci 214 FF 50 - 90 0.0 S irq/14-pata_ati 215 FF 50 - 90 0.0 S irq/15-pata_ati 301 FF 50 - 90 0.0 S irq/22-firewire 720 FF 50 - 90 0.0 S irq/7-parport0 727 FF 50 - 90 0.0 S irq/43-radeon 1111 FF 50 - 90 0.0 S irq/42-eth0 3 FF 1 - 41 0.3 S ksoftirqd/0 15 FF 1 - 41 0.1 S ksoftirqd/1 _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
