Karl Reichert wrote: > Jan Kiszka wrote: >> Karl Reichert wrote: >>>> I can't look into this soon, but it has high priority for time I will >>>> have test equipment in reach again! >>>> >>> Thanks Jan! Keep informed the list then, please ;) >>> Would really like to know why this happens, although it's not so >> critical to my project. >> >> /me would really like to understand this as well. Assuming your driver >> is rt_e1000 and that already the first sync frame shows abnormal >> latencies, could you try this patch with the I-pipe tracer enabled [1]? >> Use "echo 16000 > /proc/ipipe/trace/backtrace_points", "echo 1 > >> /proc/ipipe/trace/verbose", and grab the result from >> /proc/ipipe/trace/frozen. >> >> Thanks in advance, >> Jan >> >> >> [1] http://www.xenomai.org/index.php/I-pipe:Tracer > It's written there: > 'To enable tracing support, go the the "Kernel hacking" section of the kernel > configuration and switch on "I-pipe debugging" and then "I-pipe tracing".' > > I do not find this point in my 2.6.20 kernel. There is 'Latency tracing', is > this what they mean?
Yes, that's it, will fix in the wiki. > If so, I have to recompile my kernel and it can take some time till you get > my results, cause I'm busy at the moment. But I will give you the results, > for sure. Ok, thanks. Jan
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