[Musix-users] Re: rtirq (fixed)
Marcos Guglielmetti
marcospcmusica at gmail.com
Mon Jul 16 19:38:09 CEST 2007
Thanks Rui Nuno Capela!
A patch was attached to fix this problem on Musix.
Un parche para solucionar este problema en Musix está adjuntado, utilizarlo,
gracias:
| Marcos Guglielmetti wrote:
| > Hi
| >
| >
| > I was wandering if rtirq was working well here on Musix, see:
| >
| > Linux musix1.0R2b1 2.6.21.5-rt18 #2 SMP PREEMPT RT Fri Jun 29 19:55:08
| > EEST 2007 i686 GNU/Linux
| >
| >
| > rtirq start
| >
| > rtirq status
| >
| > PID CLS RTPRIO NI PRI %CPU STAT COMMAND
| > 47 FF 50 - 90 0.0 S< IRQ-9
| > 226 FF 50 - 90 0.0 S< IRQ-8
| > 249 FF 50 - 90 0.1 S< IRQ-14
| > 252 FF 50 - 90 0.0 S< IRQ-15
| > 325 FF 50 - 90 0.0 S< IRQ-12
| > 326 FF 50 - 90 0.0 S< IRQ-1
| > 587 FF 50 - 90 0.1 S< IRQ-10
| > 594 FF 50 - 90 0.0 S< IRQ-5
| > 929 FF 50 - 90 0.0 S< IRQ-6
| > 1040 FF 50 - 90 0.0 S< IRQ-11
| > 1071 FF 50 - 90 0.0 S< IRQ-7
| >
| >
| > It seems to work fine: JACK does not gives me any xrun...
|
| It does seem that rtirq is NOT working at all,
8-)
| or in other words, is
| not touching the IRQ threads priorities.
| See, RTPRIO=50 is the rt-kernel
| default. You should have somethng similar (but not identical) as here:
|
| # /etc/init.d/rtirq start
| rtirq: start [rtc] irq=8 pid=374 prio=90: OK.
| rtirq: start [snd] irq=21 pid=1959 prio=85: OK.
| rtirq: start [snd] irq=23 pid=2132 prio=84: OK.
| rtirq: start [snd] irq=17 pid=2091 prio=83: OK.
| rtirq: start [uhci_hcd] irq=16 pid=1794 prio=80: OK.
| rtirq: start [uhci_hcd] irq=18 pid=1735 prio=79: OK.
| rtirq: start [uhci_hcd] irq=19 pid=1767 prio=78: OK.
| rtirq: start [ehci_hcd] irq=20 pid=1801 prio=80: OK.
| rtirq: start [i8042] irq=1 pid=412 prio=75: OK.
| rtirq: start [i8042] irq=12 pid=411 prio=74: OK.
| # /etc/init.d/rtirq status
|
| PID CLS RTPRIO NI PRI %CPU STAT COMMAND
| 374 FF 90 - 130 0.0 S< IRQ-8 rtc
| 1959 FF 85 - 125 0.0 S< IRQ-21 sk98lin, ICE1712
| 2132 FF 84 - 124 0.0 S< IRQ-23 CS46XX
| 2091 FF 83 - 123 0.3 S< IRQ-17 Intel ICH5
| 1794 FF 80 - 120 0.0 S< IRQ-16 uhci_hcd:usb3
| 1801 FF 80 - 120 0.0 S< IRQ-20 ehci_hcd:usb4
| 1735 FF 79 - 119 0.2 S< IRQ-18 uhci_hcd:usb1, nvidia
| 1767 FF 78 - 118 0.1 S< IRQ-19 uhci_hcd:usb2
| 412 FF 75 - 115 0.0 S< IRQ-1 i8042
| 411 FF 74 - 114 0.0 S< IRQ-12 i8042
| 5 FF 50 - 90 0.0 S< softirq-high/0
| 6 FF 50 - 90 0.4 S< softirq-timer/0
| ...
|
| Maybe you'll have an older rtirq.
Yes:
ls -la /etc/init.d/rtirq
-rwxr-xr-x 1 root root 5648 2005-12-08 01:45 /etc/init.d/rtirq
apt-cache show rtirq
Package: rtirq
Status: install ok installed
Priority: optional
Section: base
Installed-Size: 72
Maintainer: Free Ekanayaka <free at agnula.org>
Architecture: all
Version: 20050914-1
Depends: schedutils
Conffiles:
/etc/default/rtirq 62a7f4ddaa9b6c5f2f7bcfbbc37d1dd2
/etc/init.d/rtirq 55bae5f55c7bbc14326b1cd5cc3ff724
Description: Realtime IRQ
This package contains scripts to prioritize IRQ thread handlers
on a realtime-preemptible kernel
| You can do the upgrade the dirty way,
| by grabbing
| http://www.rncbc.org/jack/rtirq-20070101.tar.gz.
| Locate where your existing rtirq is installed (mine is in
| "/etc/init.d/rtirq" as of LSB) bur yours may vary (as in debian which I
| don't grok very well:)
rm /usr/bin/rtirq
Ok
Download from: http://www.rncbc.org/jack/rtirq-20070101.tar.gz
Now:
cd /etc/init.d
rm rtirq # ok, I dont need it, and I have backups
mv rtirq.sh rtirq
ln -s /etc/init.d/rtirq /usr/sbin/
(just to lauch it in an easy way)
| . Make a backup. Locate where your rtirq
| configuration is also. Make a backup. Replace the existing "rtirq"
| script with the supplied "rtirq.sh". Do the same with the configuration
| by "rtirq.conf" (LSB suggest that's "/etc/sysconfig/rtirq", but YMMV)
I dont see this on my system...
locate rtirq | grep conf
/mnt/hda1/knx/source/KNOPPIX/var/lib/dpkg/info/rtirq.conffiles
/mnt/hdb2/var/lib/dpkg/info/rtirq.conffiles
/mnt/hdb5/var/lib/dpkg/info/rtirq.conffiles
/mnt/hdb8/var/lib/dpkg/info/rtirq.conffiles
/var/lib/dpkg/info/rtirq.conffiles
* So, I just added it there, see:
ls -la /etc/sysconfig/rtirq.conf
-rw-r--r-- 1 root root 918 2007-01-01 21:30 /etc/sysconfig/rtirq.conf
* Rename it:
mv /etc/sysconfig/rtirq.conf /etc/sysconfig/rtirq
| .
| Check and edit the new "rtirq" shell script and eventually change the
| variable which points to the new configuration file, something like
| RTIRQ_CONFIG=/etc/sysconfig/rtirq
It's ok
| If you were under an RPM based distro (which I think you aren't) you
| could just go on your life with
| http://www.rncbc.org/jack/rtirq-20070101-18.noarch.rpm
|
| Good luck.
| Cheers.
Thanks, now:
root at musix1:/etc/init.d# rtirq stop
root at musix1:/etc/init.d# rtirq start
rtirq: start [rtc] irq=8 pid=226 prio=90: OK.
rtirq: start [snd] irq=12 pid=325 prio=85: OK.
rtirq: start [snd] irq=10 pid=587 prio=84: OK.
rtirq: start [uhci_hcd] irq=5 pid=594 prio=80: OK.
rtirq: start [ehci_hcd] irq=11 pid=1040 prio=80: OK.
rtirq: start [i8042] irq=1 pid=326 prio=75: OK.
root at musix1:/etc/init.d# rtirq status
PID CLS RTPRIO NI PRI %CPU STAT COMMAND
226 FF 90 - 130 0.0 S< IRQ-8 rtc
325 FF 85 - 125 0.1 S< IRQ-12 uhci_hcd:usb3, VIA82XX-MODEM
587 FF 84 - 124 0.8 S< IRQ-10 uhci_hcd:usb1, EMU10K1
594 FF 80 - 120 0.0 S< IRQ-5 uhci_hcd:usb2
1040 FF 80 - 120 0.0 S< IRQ-11 ehci_hcd:usb4
326 FF 75 - 115 0.0 S< IRQ-1 i8042
4 FF 50 - 90 0.0 S softirq-high/0
5 FF 50 - 90 0.7 S softirq-timer/0
6 FF 50 - 90 0.0 S softirq-net-tx/
7 FF 50 - 90 0.0 S softirq-net-rx/
8 FF 50 - 90 0.0 S softirq-block/0
9 FF 50 - 90 0.0 S softirq-tasklet
10 FF 50 - 90 0.0 S softirq-sched/0
11 FF 50 - 90 0.0 S softirq-hrtimer
12 FF 50 - 90 0.0 S softirq-rcu/0
47 FF 50 - 90 0.0 S< IRQ-9 acpi
249 FF 50 - 90 0.0 S< IRQ-14 ide0
252 FF 50 - 90 0.0 S< IRQ-15 ide1
929 FF 50 - 90 0.0 S< IRQ-6
1071 FF 50 - 90 0.0 S< IRQ-7 parport0
Cheers,
--
`&'
# Marcos Guglielmetti, co-director de
# Musix GNU+Linux, 100% Software Libre para artistas
_#_ http://www.musix.org.ar
(#)
/ O \ + archivos: ftp://musix.ourproject.org/pub/musix
( === ) Ecología: http://autosus.wordpress.com
`---' Personal: http://marcospcmusica.wordpress.com
"La libertad está en ser dueños de la propia vida."
Aristóteles
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