Karl Reichert wrote: > Jan Kiszka wrote: >> Karl Reichert wrote: >>> Jan Kiszka wrote: >>>> Karl Reichert wrote: >> ... >>>>> I put the freeze after the sleep now, please see attached files. This >> is >>>> what printk gives: >>>>> [ 7605.737664] [REK debug] tdma->current_cycle_start = >>>> 1191326103544417349 >>>>> [ 7605.737708] [REK debug] job->offset = 2300000 >>>> So you sleep about 2300 us after the Sync frame reception. But your >>>> frozen backtrace doesn't cover the full period, just look at the >>>> timestamps. Once you can see the full period of 2300 us from falling >>>> asleep until waking up and maybe also sending the packet (play with >>>> back_trace_points and post_trace_points), you can be sure that the >> local >>>> timing is correct. >>> I'm sorry, I do not know how to read those files and where to look for. >> The wiki page is a little bit short about this topic. So I attached my >> frozen and max file again, this time with post_ pre_ and back_ points set to >> 1000. Please tell me where I can see that I really sleep 2300 us. Thanks in >> advance ... >> >> See comments below. In short: timing looks ok. > > Thanks for the detailed explanatory notes! I added a copy of this to Xenomai > Wiki dealing with iPipe Tracer. Hope this will help other users to understand > how to read those files.
Forgot to send you kudos for doing this! Jan
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