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

[Henk Jansen]

On Mon, 2005-06-27 at 12:05 -0700, Fernando Lopez-Lezcano wrote:
> On Mon, 2005-06-27 at 11:55, Henk Jansen wrote:
> > > > (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>
> 
> So it definitely has to do with the soundcard and what it can (or can't)
> do, I guess. Try more periods to see if that makes a difference.
> 
> > 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
> 
> Load the sequencer module by hand or enable the alsasound startup script
> so that it is loaded on boot ("/sbin/chkconfig alsasound on")
> 
> > *** glibc detected *** double free or corruption (!prev): 0x080ccc78 ***
> 
> Hmmmm, bug in rosegarden?
> 
> > 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?
> 
> Yep. 
> Maybe a previous jack was killed in a way in which it could not do any
> cleanup and left stuff in the temporary directory used to store pipes
> and all that. 
> 
> In fc3 that should be /var/lib/jack/tmp/ (should be mounted in tmpfs),
> make sure that directory is empty and that there are no instances of
> jack running. 

[root@jaki jans2]# rm -Rf /var/lib/jack/tmp/*
[root@jaki jans2]# ls /var/lib/jack/tmp/
[root@jaki jans2]# find /var/ | grep jack
/var/cache/apt/archives/jackmix_0.0.3-1.rhfc3.ccrma_i386.rpm
/var/cache/apt/archives/libjackasyn-devel_0.11-1.rhfc3.ccrma_i386.rpm
/var/cache/apt/archives/jackeq_0.4.0-1.rhfc3.ccrma_i386.rpm
/var/cache/apt/archives/libjackasyn_0.11-1.rhfc3.ccrma_i386.rpm
/var/cache/apt/archives/jack-rack_1.4.3-3.rhfc3.ccrma_i386.rpm
/var/cache/apt/archives/qjackctl_0.2.15-2.rhfc3.ccrma_i386.rpm
/var/cache/apt/archives/xmms-jack_0.13-2.rhfc3.ccrma_i386.rpm
/var/lib/jack
/var/lib/jack/tmp
[root@jaki jans2]# exit
[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]$

...not making much progress, are we? (I much appreciate your help; no
misunderstanding about that!)

--Henk

> 
> -- Fernando
> 
>