Re: [Jack-Devel] jack-transport sync-capabilities over network

On 11/27/2013 02:52 PM, Supertux wrote:
> Hello there!
>
> I want to use jack-transport to sync some apps over network. Maybe I did
> something wrong, because the slave lags about 2 seconds behind... Or is
> jack-transport not made for this job?
>
> My setup:
>
> I'm running jackd (with qjackctl) on the master with these parameters:
>
> /usr/bin/jackd -P89 -p512 -u -dalsa -dhw:DSP -r48000 -p64 -n2 -s
>
> runs smooth without xruns on a 4-core Xeon-machine. After that a script
> is run to establish the net- (and some MIDI-)stuff:
>
> #!/bin/bash
> jack_netsource -i3 -o2 -I1 -O1 -n8 -H laptop &
> a2j &
> exit 0
>
> ...with "laptop" being my slave-machine, a Thinkpad T410. This one
> I'm launching with:
>
> /usr/bin/jackd -P70 -p128 -t1000 -u -dnet -i2 -o3
>
> Nevermind the audio-connections. It's a leftover from another project I'm
> using. Shouldn't be a problem for jack-transport, right?
>
> The 2 computers are connected over GBit-ethernet. Got some net-xruns
> from time to time, but nothing permanent.
>
> As I already said above: When I start jack-transport on master, the
> slave lags about 2 seconds behind.
> When I stop jack-transport on master, the slave is immediately
> synced to the masters time. No lag - but just when jack-transport is
> stopped.
>    
> Have I missed something?
>
> Greets!
> Mitsch
>
> 
> Jack-Devel mailing list
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>
I've experience this with jack1/netjack1.  jack2 when used with netjack1 
works.  afaik transport sync has been removed (temporarily ?) from 
netjack2.  my apologies if i'm wrong about that.
hope this helps,
tweed

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