[LAU] Re: monitoring jack connections

Check out jack_evmon ....

On Mon, Oct 27, 2025 at 6:44 AM Bill Purvis <[email protected]> wrote:

>
>
> On 26/10/2025 21:31, Worik wrote:
>
> > I've been having problems with connections between jack clients
> dropping out.
> > I would like to have a program that monitors the state of connections.
>
> I use `watch jack_lsp -c`
>
> If it is too inconvenient to see that much I filter it with grep.
>
> Is that not possible or suitable?
>
> Thanks!
>
> I'm currently doing a variant of that - using a bash script instead of
> watch.
> I append the source port name, and pipe the result through 'wc -l'. There
> are actually
> five source ports, so if all is well I get a value of 10 returned.
> Anything less
> suggests one or more of the connections has failed.
>
> Just installed it on the organ this morning, and it looks to be working OK.
> Currently it attempts to reconnect all five connections, I may refine it to
> check the individual connections. If only one has dropped out the reconnect
> script get several error messages to say it can't reconnect as it is
> already
> connected!
>
> I'm toying with using the jack_set_graph_order_callback to get an explicit
> trigger to do the reconnect. That way I don't need to poll using jack_lsp
> every 10 seconds. Needs a bit more experimenting to build the code to
> do this.
>
> Thanks also to Kjetil Matheussen who suggested this!
>
> Bill
>
> --
> +---------------------------------------------+
> | Bill Purvis          G8DIO                  |
> | [email protected]                              |
> +---------------------------------------------+
>
>
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