Hello Gilles, > > >> Now I have the following questions > > >> 1. What is meant by "domain stalled", "current" and "current+stalled"? > > >> 2. What is that process having ID "[ 0]" > > >> 3. How can I tell processes running in secondary mode from others? > > >> (just by looking at the priority value?) > > >> > > >> Any hint on interpreting my frozen file is appreciated. > > > > > > This trace is worthless. To have a meaningful trace, enable tracing > > > on functions entry (the default when you enable the I-pipe tracer). > > > > > Do you mean CONFIG_FUNCTION_TRACE? > > I mean CONFIG_IPIPE_TRACE_MCOUNT > I enabled CONFIG_IPIPE_TRACE_MCOUNT=Y and set CONFIG_IPIPE_TRACE_SHIFT=18 to get 256000 lines of backtrace history. I captured some frozen files, when RT Throttling occurred and during normal operation. To me, they look very similar and I am not sure at what functions I should look at.
The longest delay values (>= 1000us) I observe for the following functions. They occur every 5..10 ms. __ipipe_halt_root : delays = 1000us .. 3900us __ipipe_restore_root_nosync : delays = 1000us .. 3900us As "__ipipe_halt_root" is called by "default_idle", and the delay values increase (up to 9984 us), when the application is not running, I guess this is actually CPU idle time and not relevant. "ipipe_root_only" also occasionally has long delay times. Is ipipe_root_only run when Linux is executing? Is this critical? See extract below. ================== start: extract from frozen file ================================ : +func -420045+ 1.443 ipipe_root_only+0x4 (copy_to_user+0x31) : +func -420044 0.260 __ipipe_syscall_root+0x5 (sysenter_past_esp+0x5b) : +func -420043 0.200 sys_time+0x5 (sysenter_do_call+0x12) : +func -420043 0.210 get_seconds+0x3 (sys_time+0xf) : +func -420043! 3910.393 ipipe_root_only+0x4 (sys_time+0x1c) :| +func -416132 0.651 __ipipe_handle_irq+0x5 (common_interrupt+0x2c) :| +func -416132 0.340 __ipipe_dispatch_irq+0x9 (__ipipe_handle_irq+0x7f) ================== end: extract from frozen file ================================ Any other suggestions where to look at? Thanks in advance Jochen _______________________________________________ Xenomai mailing list [email protected] http://xenomai.org/mailman/listinfo/xenomai
