[PlanetCCRMA] PlanetCCRMA and RAID: which way to go?

[Henk Jansen]

On Mon, 2005-06-27 at 11:24 -0700, Fernando Lopez-Lezcano wrote:
> On Mon, 2005-06-27 at 11:15, Henk Jansen wrote:
> > On Mon, 2005-06-27 at 10:44 -0700, Fernando Lopez-Lezcano wrote:
> > > On Mon, 2005-06-27 at 04:43, Henk Jansen wrote:
> > > > Ok, couldn't get the 2.6.10-2.1.ll.rhfc3.ccrma kernel to reccognize my
> > > > raid0 setup, but the 2.6.11-0.3.rdt.rhfc3.ccrma kernel does! Using this
> > > > kernel I end up with a normally running system that allows me to do
> > > > things as usual (mail, internet, ...). However, when I attempt starting
> > > > the jack server I obtain:
> > > > 
> > > > [root@jaki jans2]# jackstart -R -d alsa -d hw -r 44100
> > > > jackstart: cannot get realtime capabilities, current capabilities are:
> > > >            =ep cap_setpcap-ep
> > > >     probably running under a kernel with capabilities disabled,
> > > >     a suitable kernel would have printed something like "=eip"
> > > 
> > > As Joe said on 2.6.x based systems it is enough to use "jackd" instead
> > > of "jackstart" (jackstart will complain but will work anyway). Another
> > > piece you need for that particular kernel is to have the realtime lsm
> > > kernel module loaded but that is activated as part of the normal install
> > > if you use the planetccrma-core-* meta packages. 
> > 
> > [jans2@jaki jans2]$ /sbin/lsmod | grep lsm
> > [jans2@jaki jans2]$ find /lib/modules/2.6.11-0.3.rdt.rhfc3.ccrma/ | grep
> > lsm
> > [jans2@jaki jans2]$
> > 
> > (i.o.w.: nothing 'lsm module' like is loaded by the kernel or found in
> > the modules directory...)
> > 
> > However:
> > 
> > [jans2@jaki jans2]$ /sbin/lsmod | grep realtime
> > realtime                5256  0
> > commoncap               7040  1 realtime
> 
> Yes, "realtime" is the one, I should have been more explicit. So jackd
> should start with "-R" and not complain at all. 
> 
> > (read on about soundcard ...)
> > 
> > > 
> > > > back from read, ret = 1 errno == Success
> > > > jackstart: could not give capabilities: Operation not permitted
> > > > jackd 0.99.36
> > > > Copyright 2001-2003 Paul Davis and others.
> > > > jackd comes with ABSOLUTELY NO WARRANTY
> > > > This is free software, and you are welcome to redistribute it
> > > > under certain conditions; see the file COPYING for details
> > > > 
> > > > JACK compiled with System V SHM support.
> > > > loading driver ..
> > > > apparent rate = 44100
> > > > creating alsa driver ... hw|hw|1024|2|44100|0|0|nomon|swmeter|-|32bit
> > > > configuring for 44100Hz, period = 1024 frames, buffer = 2 periods
> > > > Couldn't open hw for 32bit samples trying 24bit instead
> > > > Couldn't open hw for 24bit samples trying 16bit instead
> > > > nperiods = 2 for capture
> > > > Couldn't open hw for 32bit samples trying 24bit instead
> > > > Couldn't open hw for 24bit samples trying 16bit instead
> > > > nperiods = 2 for playback
> > > > jackd watchdog: timeout - killing jackd
> > > > Aborted
> > > > [root@jaki jans2]#
> > > 
> > > Hmmm, looks like jack is hanging (and its watchdog process is killing
> > > it)... what soundcard do you have installed?
> > 
> > My soundcard: C-Media Electronics Inc CM738
> > Driver:       snd-cmipci
> 
> I'd try to see what happens if you start jack with more periods, for
> example 3 (option "-n" - perhaps you will also need to reduce the length
> of the buffer, for example "-p 512 -n 3"). 

(I'm not running as root anymore)

[jans2@jaki jans2]$ /usr/bin/jackd -R -d alsa  -r48000 -p512 -n3


**** alsa_pcm: xrun of at least 0.025 msecs



**** alsa_pcm: xrun of at least 0.024 msecs



**** alsa_pcm: xrun of at least 0.037 msecs

.... <etcetera>

However, when I try starting rosegarden in another console, I get:

[jans2@jaki jans2]$ rosegarden
kbuildsycoca running...
PluginFactory::instance(dssi): creating new DSSIPluginFactory
[/home/jans2/.dssi] [/usr/local/lib/dssi] [/usr/lib/dssi]
PluginFactory::instance(ladspa): creating new LADSPAPluginFactory
[/usr/lib/ladspa]
Rosegarden 4-1.0 - AlsaDriver - alsa-lib version 1.0.8

JackDriver::initialiseAudio - JACK server not running
ALSA lib seq_hw.c:451:(snd_seq_hw_open) open /dev/snd/seq failed: No
such file or directory
*** glibc detected *** double free or corruption (!prev): 0x080ccc78 ***
Profiler : id = querying plugins - elapsed = 890ms CPU,  1.019586000R
real
[jans2@jaki jans2]$

... indicating that (apparently) the JACK server is stil not running.
Trying to restart the jack server gives me:

[jans2@jaki jans2]$ /usr/bin/jackd -R -d alsa  -r48000 -p512 -n3
jackd 0.99.36
Copyright 2001-2003 Paul Davis and others.
jackd comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details

JACK compiled with System V SHM support.
too many servers already active
[jans2@jaki jans2]$

Yet:

[jans2@jaki jans2]$ ps aux | grep jack
jans2     8573  0.0  0.0  3720  652 pts/5    S+   20:54   0:00 grep jack
[jans2@jaki jans2]$

...no jackd to be found --- confusing, isn't it?

--Henk

> 
> -- Fernando
> 
> 
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