NOTE: THere are many messages I haven't read through yet so I may send more data later as per requests there. On 10/6/05, Ingo Molnar <[email protected]> wrote: > > * Mark Knecht <[email protected]> wrote: > > > Hi, > > This is nothing particularily new. I'm just presenting it to > > represent what I'm seeign and get some guidance about how to find out > > what's going on. > > lets first check whether all the RT priorities are set up correctly for > your audio setup. Could you send me your /proc/interrupts, your .config > and the output of: > > ps -eo pid,pri,rtprio,cmd > > there are lots of built-in methods in the -rt kernel to figure out the > source of latencies. If the default methods do not show anything then > worst-case we can activate the kernel's latency tracer to record the > actual xrun critical path. > > Ingo > Hi Ingo, OK, so starting the day I saw that you had posted -rt10 so that's what I'm working with now: lightning ~ # uname -a Linux lightning 2.6.14-rc3-rt10 #1 SMP PREEMPT Thu Oct 6 08:14:03 PDT 2005 x86_64 AMD Athlon(tm) 64 Processor 3000+ AuthenticAMD GNU/Linux lightning ~ # The sound card that is critical to this machine is the hdsp one at IRQ 58. The one at 225 is not used in realtime mode. lightning ~ # cat /proc/interrupts CPU0 0: 39462 IO-APIC-edge timer 1: 210 IO-APIC-edge i8042 7: 2 IO-APIC-edge lpptest 8: 0 IO-APIC-edge rtc 9: 0 IO-APIC-level acpi 12: 6286 IO-APIC-edge i8042 14: 48 IO-APIC-edge ide0 50: 2 IO-APIC-level ehci_hcd:usb1 58: 3922 IO-APIC-level hdsp 66: 2 IO-APIC-level ohci1394 217: 13592 IO-APIC-level ohci_hcd:usb2, eth0 225: 0 IO-APIC-level libata, NVidia CK804 233: 11973 IO-APIC-level libata NMI: 72 LOC: 39417 ERR: 1 MIS: 0 lightning ~ # lightning ~ # cat /proc/asound/cards 0 [CK804 ]: NFORCE - NVidia CK804 NVidia CK804 with ALC850 at 0xda103000, irq 225 1 [DSP ]: H-DSP - Hammerfall DSP RME Hammerfall HDSP 9652 at 0xda000000, irq 58 lightning ~ # lightning ~ # ps -eo pid,pri,rtprio,cmd PID PRI RTPRIO CMD 1 23 - init [3] 2 139 99 [migration/0] 3 41 1 [softirq-high/0] 4 41 1 [softirq-timer/0] 5 41 1 [softirq-net-tx/] 6 41 1 [softirq-net-rx/] 7 41 1 [softirq-scsi/0] 8 41 1 [softirq-tasklet] 9 34 - [desched/0] 10 41 1 [events/0] 11 28 - [khelper] 12 28 - [kthread] 14 19 - [kacpid] 15 89 49 [IRQ 9] 130 29 - [kblockd/0] 133 29 - [khubd] 202 22 - [pdflush] 203 24 - [pdflush] 205 27 - [aio/0] 204 14 - [kswapd0] 798 88 48 [IRQ 8] 801 87 47 [IRQ 7] 802 29 - [kseriod] 805 86 46 [IRQ 12] 815 85 45 [IRQ 6] 850 84 44 [IRQ 14] 861 29 - [ata/0] 865 27 - [scsi_eh_0] 866 27 - [scsi_eh_1] 867 83 43 [IRQ 225] 870 27 - [scsi_eh_2] 871 27 - [scsi_eh_3] 872 82 42 [IRQ 233] 887 81 41 [IRQ 50] 893 80 40 [IRQ 217] 908 79 39 [IRQ 1] 912 24 - [kjournald] 970 26 - udevd 4545 78 38 [IRQ 58] 4599 24 - [khpsbpkt] 4694 77 37 [IRQ 66] 4695 23 - [knodemgrd_0] 6321 24 - /usr/sbin/syslog-ng 7111 23 - /usr/sbin/cupsd 7117 76 36 [IRQ 4] 7188 22 - /usr/sbin/sshd 7224 23 - /usr/sbin/cron 7343 23 - /sbin/portmap 7370 27 - [rpciod/0] 7371 23 - [lockd] 7394 22 - /sbin/agetty 38400 tty1 linux 7398 22 - /sbin/agetty 38400 tty2 linux 7400 22 - /sbin/agetty 38400 tty3 linux 7401 23 - /sbin/agetty 38400 tty4 linux 7408 23 - /sbin/agetty 38400 tty5 linux 7409 23 - /sbin/agetty 38400 tty6 linux 7527 23 - /usr/bin/gdm 7529 23 - /usr/bin/gdm 7534 23 - /usr/X11R6/bin/X :0 -audit 0 -auth /var/gdm/:0.Xauth -nolisten tcp vt7 7567 23 - gnome-session 7582 23 - /usr/bin/ssh-agent -- gnome-session 7584 23 - /usr/libexec/gconfd-2 5 7587 21 - /usr/bin/gnome-keyring-daemon 7589 23 - /usr/libexec/bonobo-activation-server --ac-activate --ior-output-fd=19 7591 23 - /usr/libexec/gnome-settings-daemon --oaf-activate-iid=OAFIID:GNOME_SettingsDaemon --oa 7601 24 - xscreensaver -nosplash 7627 24 - metacity --sm-save-file 1126471293-7521-180409387.ms 7629 23 - nautilus --sm-config-prefix /nautilus-pR56zY/ --sm-client-id 11c0a80138000112560470300 7631 23 - gnome-panel --sm-config-prefix /gnome-panel-Ckbfvi/ --sm-client-id 11c0a80138000112627 7648 23 - /usr/libexec/gnome-vfs-daemon --oaf-activate-iid=OAFIID:GNOME_VFS_Daemon_Factory --oaf 7656 23 - /usr/libexec/mapping-daemon 7659 24 - /usr/libexec/mixer_applet2 --oaf-activate-iid=OAFIID:GNOME_MixerApplet_Factory --oaf-i 7661 23 - /usr/libexec/clock-applet --oaf-activate-iid=OAFIID:GNOME_ClockApplet_Factory --oaf-io 7663 23 - /usr/libexec/wnck-applet --oaf-activate-iid=OAFIID:GNOME_Wncklet_Factory --oaf-ior-fd= 7665 23 - /usr/bin/gnome-terminal 7666 21 - gnome-pty-helper 7667 24 - bash 7672 22 - su - 7675 23 - -bash 8398 24 - hdspmixer 8400 24 - qjackctl 8402 20 - /usr/bin/jackd -R -dalsa -dhw:1 -r44100 -p128 -n2 8410 23 - /bin/bash /usr/libexec/mozilla-launcher 8421 24 - /opt/firefox/firefox-bin 8437 22 - ps -eo pid,pri,rtprio,cmd lightning ~ # Even with Jack running I don't see the jackd process getting any special priority. Is this correct, or is that part that gets higher prioity just not listed here. .config attached. Thanks! - Mark
Attachment:
knecht.config-2.6.14-rc3-rt10.bz2
Description: BZip2 compressed data
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