Re: [LAU] Too many xruns

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To: Kevin Cosgrove <kevinc@...>
Cc: <linux-audio-user@...>
Date: Thursday, October 11, 2012 - 10:55 am

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1. Checking checking sysctl inotify max_user_watches... < 524288 - not good

as jeremy mentioned, i have no idea what this is supposed to help. it has
nothing fundamentally to do with realtime at all.

2. chrt: failed to set pid 0's policy: Operation not permitted

this is not true. http://jackaudio.org/realtime_vs_realtime_kernel

you *must* get these permissions correct BUT at the same time, i have no
idea why this script is trying to set the RT priority of PID 0, which is
typically init(1), the program that starts a Unix system running.

>

not necessarily relevant. required in cases where the kernel and h/w are
cooperating (badly) to prevent low latency operation, but many people have
systems where this is not required.

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1. =A0Checking checking sysctl inotify max_user_watches... < 524288 - no=
t goodas jeremy mentioned, i have no idea what th=
is is supposed to help. it has nothing fundamentally to do with realtime at=
all.

2. =A0chrt: failed to set pid 0's policy: Operation not permitted
=A0 =A0 Checking the ability to prioritize processes with chrt... no - not =
good
=A0 =A0 Could not assign a 80 rtprio value. Set up limits.conf.
=A0 =A0 For more information, see
=A0 =A0 http://wiki.linuxmusicians.com/dok=
u.php?id=3Dsystem_configuration#limits.conf

=A0 =A0 I did make the changes outlined at the above link. =A0I still
=A0 =A0 get the above report. =A0I'm going to guess that I need some
=A0 =A0 real-time support from the kernel to make this work. =A0Which
=A0 =A0 brings me tothis is not true. http://jackaudio.org/real=
time_vs_realtime_kernel
you *must* get these permissions correct=
BUT at the same time, i have no idea why this script is trying to set the =
RT priority of PID 0, which is typically init(1), the program that starts a=
Unix system running.
=A0

3. =A0Kernel with Real-Time Preemption... not found - not goodnot necessarily relevant. required in cases where the kernel a=
nd h/w are cooperating (badly) to prevent low latency operation, but many p=
eople have systems where this is not required.

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Messages in current thread:
[LAU] Too many xruns, Kevin Cosgrove, (Wed Sep 5, 4:17 am)
Re: [LAU] Too many xruns, S. Massy, (Thu Sep 6, 1:55 pm)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Thu Sep 6, 3:48 pm)
Re: [LAU] Too many xruns, Lorenzo Sutton, (Wed Sep 5, 7:50 am)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Wed Sep 5, 2:43 pm)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Wed Sep 5, 7:30 pm)
Re: [LAU] Too many xruns, Ralf Mardorf, (Wed Sep 5, 8:02 am)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Wed Sep 5, 2:47 pm)
Re: [LAU] Too many xruns, Ralf Mardorf, (Wed Sep 5, 7:30 am)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Wed Sep 5, 7:29 pm)
Re: [LAU] Too many xruns, Jeremy Jongepier, (Wed Sep 5, 7:11 am)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Wed Sep 5, 7:24 pm)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Thu Oct 11, 6:33 am)
Re: [LAU] Too many xruns, Paul Davis, (Thu Oct 11, 10:55 am)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Thu Oct 11, 4:17 pm)
Re: [LAU] Too many xruns, Brendan Jones, (Fri Oct 12, 12:33 pm)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Fri Oct 12, 4:07 pm)
Re: [LAU] Too many xruns, Brendan Jones, (Fri Oct 12, 6:55 pm)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Fri Oct 12, 7:01 pm)
Re: [LAU] Too many xruns, Jeremy Jongepier, (Thu Oct 11, 6:01 pm)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Thu Oct 11, 6:17 pm)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Thu Oct 11, 4:50 pm)
Re: [LAU] Too many xruns, SxDx, (Thu Oct 11, 12:24 pm)
Re: [LAU] Too many xruns, R. Mattes, (Thu Oct 11, 3:45 pm)
Re: [LAU] Too many xruns, Jeremy Jongepier, (Thu Oct 11, 11:00 am)
Re: [LAU] Too many xruns, Jeremy Jongepier, (Thu Oct 11, 7:07 am)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Thu Oct 11, 8:06 am)
Re: [LAU] Too many xruns, Jeremy Jongepier, (Thu Oct 11, 8:55 am)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Thu Oct 11, 3:53 pm)
Re: [LAU] Too many xruns, Jeremy Jongepier, (Thu Oct 11, 5:58 pm)
Re: [LAU] Too many xruns, Len Ovens, (Thu Oct 11, 9:22 pm)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Thu Oct 11, 6:03 pm)
Re: [LAU] Too many xruns, Len Ovens, (Thu Sep 6, 5:24 am)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Thu Sep 6, 3:43 pm)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Thu Sep 6, 5:02 pm)
Re: [LAU] Too many xruns, Joakim Hernberg, (Fri Sep 7, 8:18 am)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Fri Sep 7, 8:25 pm)
Re: [LAU] Too many xruns, Jeremy Jongepier, (Fri Sep 7, 8:30 am)
Re: [LAU] Too many xruns, Joakim Hernberg, (Fri Sep 7, 9:23 am)
Re: [LAU] Too many xruns, Jeremy Jongepier, (Fri Sep 7, 9:40 am)
Re: [LAU] Too many xruns, Fernando Lopez-Lezcano, (Sat Sep 8, 6:09 pm)
Re: [LAU] Too many xruns, Joakim Hernberg, (Fri Sep 7, 10:46 am)
Re: [LAU] Too many xruns, Jeremy Jongepier, (Fri Sep 7, 11:03 am)
Re: [LAU] Too many xruns, Jeremy Jongepier, (Thu Sep 6, 7:12 pm)
Re: [LAU] Too many xruns, Len Ovens, (Thu Sep 6, 4:55 pm)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Thu Sep 6, 5:08 pm)
Re: [LAU] Too many xruns, Paul Davis, (Thu Sep 6, 5:10 pm)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Thu Sep 6, 5:30 pm)
Re: [LAU] Too many xruns, Ralf Mardorf, (Fri Sep 7, 2:15 am)
Re: [LAU] Too many xruns, Joakim Hernberg, (Fri Sep 7, 7:52 am)
Re: [LAU] Too many xruns, Paul Davis, (Fri Sep 7, 10:53 am)
[LAU] PCIe audio gear [was: Too many xruns], Kevin Cosgrove, (Fri Sep 7, 2:21 am)
Re: [LAU] PCIe audio gear [was: Too many xruns], Paul Davis, (Fri Sep 7, 4:02 am)
Re: [LAU] PCIe audio gear [was: Too many xruns], Len Ovens, (Fri Sep 7, 3:29 am)
Re: [LAU] PCIe audio gear [was: Too many xruns], Ralf Mardorf, (Fri Sep 7, 3:58 am)
Re: [LAU] PCIe audio gear [was: Too many xruns], Len Ovens, (Fri Sep 7, 4:47 am)
Re: [LAU] PCIe audio gear [was: Too many xruns], Kevin Cosgrove, (Fri Sep 7, 4:58 am)
Re: [LAU] PCIe audio gear [was: Too many xruns], Len Ovens, (Fri Sep 7, 1:08 pm)
Re: [LAU] PCIe audio gear [was: Too many xruns], Kevin Cosgrove, (Fri Sep 7, 8:31 pm)
Re: [LAU] PCIe audio gear [was: Too many xruns], Kevin Cosgrove, (Fri Oct 12, 5:18 pm)
Re: [LAU] PCIe audio gear [was: Too many xruns], Fernando Lopez-Lezcano, (Sat Sep 8, 6:59 pm)
Re: [LAU] PCIe audio gear [was: Too many xruns], Kevin Cosgrove, (Sun Sep 9, 4:14 pm)
Re: [LAU] PCIe audio gear [was: Too many xruns], Len Ovens, (Sat Sep 8, 9:53 pm)
Re: [LAU] PCIe audio gear [was: Too many xruns], Ralf Mardorf, (Mon Sep 10, 10:46 am)
Re: [LAU] PCIe audio gear [was: Too many xruns], Ralf Mardorf, (Fri Sep 7, 2:42 am)
Re: [LAU] Too many xruns, Jeremy Jongepier, (Thu Sep 6, 9:07 am)
Re: [LAU] Too many xruns, Len Ovens, (Thu Sep 6, 2:36 pm)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Thu Sep 6, 3:50 pm)
Re: [LAU] Too many xruns, Len Ovens, (Thu Sep 6, 5:00 pm)
Re: [LAU] Too many xruns, S. Massy, (Thu Sep 6, 4:54 pm)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Thu Sep 6, 5:04 pm)
Re: [LAU] Too many xruns, Rui Nuno Capela, (Thu Sep 6, 8:51 pm)
Re: [LAU] Too many xruns, Jeremy Jongepier, (Wed Sep 5, 7:42 pm)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Mon Oct 1, 1:35 am)
Re: [LAU] Too many xruns, Fernando Lopez-Lezcano, (Wed Sep 5, 7:55 pm)
Re: [LAU] Too many xruns, Simon Wise, (Wed Sep 5, 5:02 am)
Re: [LAU] Too many xruns, Kevin Cosgrove, (Wed Sep 5, 2:37 pm)