[LAU] Large live recrodings ?

[Justin Smith]

On Sat, Jul 12, 2008 at 2:25 PM, Arnold Krille <arnold at arnoldarts.de> wrote:
> Am Samstag, 12. Juli 2008 schrieb Kjetil S. Matheussen:
>> Arnold Krille:
>> > My big cron jobs check wether "pidof jackd" returns something or not. And
>> > if a jackd is running, they don't start...
>> That's a good idea. But what if the file locate updater cron job
>> has started before you start jack? That could be devastating
>> if doing a recording of many channels.
>
> I either start my computer well ahead of the real recording session (usually I
> check mails and blogs before), or I start jack before the cron jobs try to
> run the first time.
> Or I simply wait till my backup is finished. Its worth the wait...
> And when its really necessary I login/su to root and stop crond (and with it
> all its childs).
>
> Have fun,
>
> Arnold
> --

I have had my best results with defining a custom runlevel. ksysv
helps with this if you run a system that uses SysV style init (this
would include Debian and Ubuntu). Then you can do a simple "sudo
telinit 3" to turn off all daemons that may interfere with audio
performance (usually, on Debian at least, 2 is the default run level,
and 3-5 are available for custom usage, 0 is halt, 1 is single user,
and 6 is reboot). One approach is to copy the /etc/rc.1/ directory to
/etc/rc.3/ and turn things on selectively until it makes a usable
system. This is also a great way to learn about all those little tasks
that are idling in your htop display, and what they are doing. This is
a bit of work, but is worth it.