From: Mark Knecht <markknecht@gmail.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.6.14-rc3-rt9 - a few xruns misses
Date: Thu, 6 Oct 2005 09:00:32 -0700 [thread overview]
Message-ID: <5bdc1c8b0510060900m721296h53ac1d0f0fc12351@mail.gmail.com> (raw)
In-Reply-To: <20051006083043.GB21800@elte.hu>
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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 <mingo@elte.hu> wrote:
>
> * Mark Knecht <markknecht@gmail.com> 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
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next prev parent reply other threads:[~2005-10-06 16:00 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-05 23:15 Mark Knecht
2005-10-06 8:30 ` Ingo Molnar
2005-10-06 16:00 ` Mark Knecht [this message]
2005-10-06 16:26 ` Lee Revell
2005-10-06 16:30 ` Mark Knecht
2005-10-06 17:06 ` Mark Knecht
2005-10-06 17:38 ` Lee Revell
2005-10-06 17:44 ` Mark Knecht
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