Re: [LAU] netjack and WiFi

Hi all, Happy new decade! Back on that WiFi jamming issue I wrote about a while ago. Thank you all for the various suggestions. I have spent most of my time trying to get somewhere with netjack as I found it the most promising, not only in terms of efficiency but also scripting and control. However, I have hit some brick walls which are certainly due to the nature of WiFi networks (packet collisions and such) which make my setup very unstable. First of all, in my setup, there will be one "server" computer collecting 5 signals from the 5 musicians and playing them for the audience. Moreover, the operator (or software) will send back 5 mono signals to performers (one signal per performer). The idea is that each performer hears only one instrument at a time. Currently the show stopper lies in alsa_in and alsa_out components. Whenever I run both on my netbook (Atom 1.6G with Atheros Communications Inc. AR5001 Wireless Network Adapter (802.11g)) they consume around 70-80%CPU and they peak at around 50% each whenever they choke on net over/underruns. They eventually segfault (and sometimes bring the jack server down with them. This particularly true whenever the WiFi signal signal strength is weak (around 50-60%).

I was especially surprised at the high CPU consumption of those apps, as I figured that if all they do is schlep audio to and from the soundcard they would keep a low profile... My built-in audio interface is:

It is an Acer Aspire One netbook. Running Karmic with jack compiled by hand, version 0.118.0