[linux-audio-dev] Re: [Freebob-devel] [REQUEST] test the influence of linux1394 kernel drivers on scheduling latency - Linux-audio-dev

21 Jun 2006

Stefan Richter wrote:
...
  Pieter Palmers wrote:
  The problem summary is that running ieee1394 ISO
traffic can cause 
 scheduling latency spikes up to 1ms, even for RT threads with higher 
 priority.  
 Do your patches to lower CPU utilization show any influence? 
Not tested yet. I have a hunch that the removal of the dummy read might 
improve the situation. But I haven't investigated this yet.

...

 Do you get 1394 bus resets while ieee1394stress is running? (You could 
 e.g. print raw1394_get_generation(handle) when it starts and when it exits.) 
As far as I can tell there are no bus resets, but I'll check.

Pieter