bash-3.00# cat /proc/ipipe/version 1.3-00 bash-3.00# ./latency -p500 == Sampling period: 500 us == Test mode: periodic user-mode task == All results in microseconds warming up... ... RTH|-----lat min|-----lat avg|-----lat max|-overrun|----lat best|---lat worst RTS| 59.020| 67.260| 138.910| 0| 00:54:31/00:54:31 bash-3.00# cat /proc/ipipe/trace/max I-pipe worst-case tracing service on 2.6.14/ipipe-1.3-00 ------------------------------------------------------------ Begin: 182095500 cycles, Trace Points: 192 (-10/+3), Length: 265 us +----- Hard IRQs ('|': locked) |+---- ||+--- |||+-- Xenomai ||||+- Linux ('*': domain stalled) ||||| +---------- Delay flag ('+': > 1 us, '!': > 10 us) ||||| | +- NMI noise ('N') ||||| | | Type User Val. Time Delay Function (Parent) *fn -30 3.465 timer_interrupt+0x14 (__ipipe_do_timer+0x30) *fn -26 2.430 profile_tick+0x14 (timer_interrupt+0x130) *fn -24 1.865 profile_hit+0x14 (profile_tick+0x78) *fn -22 1.700 update_process_times+0x14 (timer_interrupt+0x13c) *fn -20 3.505 account_system_time+0x14 (update_process_times+0xac) *fn -17 2.195 update_mem_hiwater+0x14 (account_system_time+0x78) *fn -15 1.200 run_local_timers+0x14 (update_process_times+0xb0) *fn -14 11.905 raise_softirq+0x14 (run_local_timers+0x30) *fn -2 1.200 __ipipe_restore_root+0x14 (raise_softirq+0x84) *fn -1 1.095 __ipipe_stall_root+0x14 (__ipipe_restore_root+0x34) >| *begin 0x80000000 0+ 3.950 __ipipe_stall_root+0x98 (__ipipe_restore_root+0x34) :| *fn 3+ 1.500 scheduler_tick+0x14 (update_process_times+0x7c) :| *fn 5+ 4.040 sched_clock+0x14 (scheduler_tick+0x34) :| *fn 9+ 1.160 run_posix_cpu_timers+0x14 (update_process_times+0x84) :| *fn 10+ 3.120 __ipipe_test_root+0x14 (run_posix_cpu_timers+0x44) :| *fn 13+ 2.920 do_timer+0x14 (timer_interrupt+0x154) :| *fn 16+ 1.500 profile_tick+0x14 (timer_interrupt+0x130) :| *fn 18+ 1.140 profile_hit+0x14 (profile_tick+0x78) :| *fn 19+ 1.270 update_process_times+0x14 (timer_interrupt+0x13c) :| *fn 20+ 1.370 account_system_time+0x14 (update_process_times+0xac) :| *fn 21+ 1.325 update_mem_hiwater+0x14 (account_system_time+0x78) :| *fn 23 0.995 run_local_timers+0x14 (update_process_times+0xb0) :| *fn 24+ 1.140 raise_softirq+0x14 (run_local_timers+0x30) :| *fn 25+ 1.350 __ipipe_test_and_stall_root+0x14 (raise_softirq+0x30) :| *fn 26+ 1.205 __ipipe_restore_root+0x14 (raise_softirq+0x84) :| *fn 27+ 1.735 __ipipe_stall_root+0x14 (__ipipe_restore_root+0x34) :| *fn 29+ 1.160 scheduler_tick+0x14 (update_process_times+0x7c) :| *fn 30+ 1.565 sched_clock+0x14 (scheduler_tick+0x34) :| *fn 32+ 1.285 run_posix_cpu_timers+0x14 (update_process_times+0x84) :| *fn 33+ 1.560 __ipipe_test_root+0x14 (run_posix_cpu_timers+0x44) :| *fn 35+ 3.075 do_timer+0x14 (timer_interrupt+0x154) :| *fn 38+ 1.460 profile_tick+0x14 (timer_interrupt+0x130) :| *fn 39+ 1.300 profile_hit+0x14 (profile_tick+0x78) :| *fn 40+ 1.035 update_process_times+0x14 (timer_interrupt+0x13c) :| *fn 41+ 1.350 account_system_time+0x14 (update_process_times+0xac) :| *fn 43+ 1.275 update_mem_hiwater+0x14 (account_system_time+0x78) :| *fn 44+ 1.195 run_local_timers+0x14 (update_process_times+0xb0) :| *fn 45 1.000 raise_softirq+0x14 (run_local_timers+0x30) :| *fn 46+ 1.330 __ipipe_test_and_stall_root+0x14 (raise_softirq+0x30) :| *fn 48+ 1.155 __ipipe_restore_root+0x14 (raise_softirq+0x84) :| *fn 49+ 1.940 __ipipe_stall_root+0x14 (__ipipe_restore_root+0x34) :| *fn 51+ 1.025 scheduler_tick+0x14 (update_process_times+0x7c) :| *fn 52+ 1.525 sched_clock+0x14 (scheduler_tick+0x34) :| *fn 53+ 1.245 run_posix_cpu_timers+0x14 (update_process_times+0x84) :| *fn 54+ 1.595 __ipipe_test_root+0x14 (run_posix_cpu_timers+0x44) :| *fn 56+ 1.635 do_timer+0x14 (timer_interrupt+0x154) :| *fn 58+ 1.445 profile_tick+0x14 (timer_interrupt+0x130) :| *fn 59+ 1.300 profile_hit+0x14 (profile_tick+0x78) :| *fn 60+ 1.235 update_process_times+0x14 (timer_interrupt+0x13c) :| *fn 62+ 1.210 account_system_time+0x14 (update_process_times+0xac) :| *fn 63+ 1.255 update_mem_hiwater+0x14 (account_system_time+0x78) :| *fn 64+ 1.155 run_local_timers+0x14 (update_process_times+0xb0) :| *fn 65+ 1.235 raise_softirq+0x14 (run_local_timers+0x30) :| *fn 66+ 1.195 __ipipe_test_and_stall_root+0x14 (raise_softirq+0x30) :| *fn 68+ 1.095 __ipipe_restore_root+0x14 (raise_softirq+0x84) :| *fn 69+ 1.900 __ipipe_stall_root+0x14 (__ipipe_restore_root+0x34) :| *fn 71+ 1.225 scheduler_tick+0x14 (update_process_times+0x7c) :| *fn 72+ 1.420 sched_clock+0x14 (scheduler_tick+0x34) :| *fn 73+ 1.220 run_posix_cpu_timers+0x14 (update_process_times+0x84) :| *fn 74+ 1.545 __ipipe_test_root+0x14 (run_posix_cpu_timers+0x44) :| *fn 76+ 1.835 do_timer+0x14 (timer_interrupt+0x154) :| *fn 78+ 1.140 profile_tick+0x14 (timer_interrupt+0x130) :| *fn 79+ 1.275 profile_hit+0x14 (profile_tick+0x78) :| *fn 80+ 1.195 update_process_times+0x14 (timer_interrupt+0x13c) :| *fn 81+ 1.400 account_system_time+0x14 (update_process_times+0xac) :| *fn 83+ 1.120 update_mem_hiwater+0x14 (account_system_time+0x78) :| *fn 84+ 1.130 run_local_timers+0x14 (update_process_times+0xb0) :| *fn 85+ 1.160 raise_softirq+0x14 (run_local_timers+0x30) :| *fn 86+ 1.400 __ipipe_test_and_stall_root+0x14 (raise_softirq+0x30) :| *fn 88 1.000 __ipipe_restore_root+0x14 (raise_softirq+0x84) :| *fn 89+ 1.875 __ipipe_stall_root+0x14 (__ipipe_restore_root+0x34) :| *fn 90+ 1.185 scheduler_tick+0x14 (update_process_times+0x7c) :| *fn 92+ 1.615 sched_clock+0x14 (scheduler_tick+0x34) :| *fn 93+ 1.085 run_posix_cpu_timers+0x14 (update_process_times+0x84) :| *fn 94+ 1.525 __ipipe_test_root+0x14 (run_posix_cpu_timers+0x44) :| *fn 96+ 1.795 do_timer+0x14 (timer_interrupt+0x154) :| *fn 98+ 1.320 profile_tick+0x14 (timer_interrupt+0x130) :| *fn 99+ 1.140 profile_hit+0x14 (profile_tick+0x78) :| *fn 100+ 1.130 update_process_times+0x14 (timer_interrupt+0x13c) :| *fn 101+ 1.370 account_system_time+0x14 (update_process_times+0xac) :| *fn 103+ 1.325 update_mem_hiwater+0x14 (account_system_time+0x78) :| *fn 104 0.995 run_local_timers+0x14 (update_process_times+0xb0) :| *fn 105+ 1.140 raise_softirq+0x14 (run_local_timers+0x30) :| *fn 106+ 1.345 __ipipe_test_and_stall_root+0x14 (raise_softirq+0x30) :| *fn 107+ 1.160 __ipipe_restore_root+0x14 (raise_softirq+0x84) :| *fn 108+ 1.735 __ipipe_stall_root+0x14 (__ipipe_restore_root+0x34) :| *fn 110+ 1.160 scheduler_tick+0x14 (update_process_times+0x7c) :| *fn 111+ 1.565 sched_clock+0x14 (scheduler_tick+0x34) :| *fn 113+ 1.265 run_posix_cpu_timers+0x14 (update_process_times+0x84) :| *fn 114+ 1.390 __ipipe_test_root+0x14 (run_posix_cpu_timers+0x44) :| *fn 116+ 1.770 do_timer+0x14 (timer_interrupt+0x154) :| *fn 117+ 1.295 profile_tick+0x14 (timer_interrupt+0x130) :| *fn 119+ 1.340 profile_hit+0x14 (profile_tick+0x78) :| *fn 120+ 1.035 update_process_times+0x14 (timer_interrupt+0x13c) :| *fn 121+ 1.350 account_system_time+0x14 (update_process_times+0xac) :| *fn 122+ 1.275 update_mem_hiwater+0x14 (account_system_time+0x78) :| *fn 124+ 1.195 run_local_timers+0x14 (update_process_times+0xb0) :| *fn 125 1.000 raise_softirq+0x14 (run_local_timers+0x30) :| *fn 126+ 1.325 __ipipe_test_and_stall_root+0x14 (raise_softirq+0x30) :| *fn 127+ 1.120 __ipipe_restore_root+0x14 (raise_softirq+0x84) :| *fn 128+ 1.920 __ipipe_stall_root+0x14 (__ipipe_restore_root+0x34) :| *fn 130+ 1.025 scheduler_tick+0x14 (update_process_times+0x7c) :| *fn 131+ 1.545 sched_clock+0x14 (scheduler_tick+0x34) :| *fn 133+ 1.245 run_posix_cpu_timers+0x14 (update_process_times+0x84) :| *fn 134+ 1.595 __ipipe_test_root+0x14 (run_posix_cpu_timers+0x44) :| *fn 135+ 1.635 do_timer+0x14 (timer_interrupt+0x154) :| *fn 137+ 1.275 profile_tick+0x14 (timer_interrupt+0x130) :| *fn 138+ 1.300 profile_hit+0x14 (profile_tick+0x78) :| *fn 140+ 1.235 update_process_times+0x14 (timer_interrupt+0x13c) :| *fn 141+ 1.210 account_system_time+0x14 (update_process_times+0xac) :| *fn 142+ 1.255 update_mem_hiwater+0x14 (account_system_time+0x78) :| *fn 143+ 1.135 run_local_timers+0x14 (update_process_times+0xb0) :| *fn 144+ 1.210 raise_softirq+0x14 (run_local_timers+0x30) :| *fn 146+ 1.190 __ipipe_test_and_stall_root+0x14 (raise_softirq+0x30) :| *fn 147+ 1.135 __ipipe_restore_root+0x14 (raise_softirq+0x84) :| *fn 148+ 1.900 __ipipe_stall_root+0x14 (__ipipe_restore_root+0x34) :| *fn 150+ 1.225 scheduler_tick+0x14 (update_process_times+0x7c) :| *fn 151+ 1.410 sched_clock+0x14 (scheduler_tick+0x34) :| *fn 153+ 1.220 run_posix_cpu_timers+0x14 (update_process_times+0x84) :| *fn 154+ 1.525 __ipipe_test_root+0x14 (run_posix_cpu_timers+0x44) :| *fn 155+ 1.830 do_timer+0x14 (timer_interrupt+0x154) :| *fn 157+ 1.135 profile_tick+0x14 (timer_interrupt+0x130) :| *fn 158+ 1.230 profile_hit+0x14 (profile_tick+0x78) :| *fn 159+ 1.165 update_process_times+0x14 (timer_interrupt+0x13c) :| *fn 161+ 1.370 account_system_time+0x14 (update_process_times+0xac) :| *fn 162+ 1.115 update_mem_hiwater+0x14 (account_system_time+0x78) :| *fn 163+ 1.090 run_local_timers+0x14 (update_process_times+0xb0) :| *fn 164+ 1.160 raise_softirq+0x14 (run_local_timers+0x30) :| *fn 165+ 1.400 __ipipe_test_and_stall_root+0x14 (raise_softirq+0x30) :| *fn 167 1.000 __ipipe_restore_root+0x14 (raise_softirq+0x84) :| *fn 168+ 2.215 __ipipe_stall_root+0x14 (__ipipe_restore_root+0x34) :| *fn 170+ 1.185 scheduler_tick+0x14 (update_process_times+0x7c) :| *fn 171+ 1.615 sched_clock+0x14 (scheduler_tick+0x34) :| *fn 173+ 1.085 run_posix_cpu_timers+0x14 (update_process_times+0x84) :| *fn 174+ 1.525 __ipipe_test_root+0x14 (run_posix_cpu_timers+0x44) :| *fn 175+ 2.090 do_timer+0x14 (timer_interrupt+0x154) :| *fn 177+ 1.300 profile_tick+0x14 (timer_interrupt+0x130) :| *fn 179+ 1.135 profile_hit+0x14 (profile_tick+0x78) :| *fn 180+ 1.170 update_process_times+0x14 (timer_interrupt+0x13c) :| *fn 181+ 1.370 account_system_time+0x14 (update_process_times+0xac) :| *fn 182+ 1.325 update_mem_hiwater+0x14 (account_system_time+0x78) :| *fn 184 0.995 run_local_timers+0x14 (update_process_times+0xb0) :| *fn 185+ 1.140 raise_softirq+0x14 (run_local_timers+0x30) :| *fn 186+ 1.350 __ipipe_test_and_stall_root+0x14 (raise_softirq+0x30) :| *fn 187+ 1.205 __ipipe_restore_root+0x14 (raise_softirq+0x84) :| *fn 188+ 1.735 __ipipe_stall_root+0x14 (__ipipe_restore_root+0x34) :| *fn 190+ 1.140 scheduler_tick+0x14 (update_process_times+0x7c) :| *fn 191+ 1.565 sched_clock+0x14 (scheduler_tick+0x34) :| *fn 193+ 1.285 run_posix_cpu_timers+0x14 (update_process_times+0x84) :| *fn 194+ 1.390 __ipipe_test_root+0x14 (run_posix_cpu_timers+0x44) :| *fn 195+ 1.770 do_timer+0x14 (timer_interrupt+0x154) :| *fn 197+ 1.295 profile_tick+0x14 (timer_interrupt+0x130) :| *fn 198+ 1.340 profile_hit+0x14 (profile_tick+0x78) :| *fn 200+ 1.035 update_process_times+0x14 (timer_interrupt+0x13c) :| *fn 201+ 1.350 account_system_time+0x14 (update_process_times+0xac) :| *fn 202+ 1.275 update_mem_hiwater+0x14 (account_system_time+0x78) :| *fn 203+ 1.195 run_local_timers+0x14 (update_process_times+0xb0) :| *fn 205 1.000 raise_softirq+0x14 (run_local_timers+0x30) :| *fn 206+ 1.310 __ipipe_test_and_stall_root+0x14 (raise_softirq+0x30) :| *fn 207+ 1.155 __ipipe_restore_root+0x14 (raise_softirq+0x84) :| *fn 208+ 1.940 __ipipe_stall_root+0x14 (__ipipe_restore_root+0x34) :| *fn 210+ 1.025 scheduler_tick+0x14 (update_process_times+0x7c) :| *fn 211+ 1.525 sched_clock+0x14 (scheduler_tick+0x34) :| *fn 213+ 1.245 run_posix_cpu_timers+0x14 (update_process_times+0x84) :| *fn 214+ 1.590 __ipipe_test_root+0x14 (run_posix_cpu_timers+0x44) :| *fn 215+ 1.630 do_timer+0x14 (timer_interrupt+0x154) :| *fn 217+ 1.235 profile_tick+0x14 (timer_interrupt+0x130) :| *fn 218+ 1.300 profile_hit+0x14 (profile_tick+0x78) :| *fn 219+ 1.235 update_process_times+0x14 (timer_interrupt+0x13c) :| *fn 221+ 1.360 account_system_time+0x14 (update_process_times+0xac) :| *fn 222+ 1.215 update_mem_hiwater+0x14 (account_system_time+0x78) :| *fn 223+ 1.155 run_local_timers+0x14 (update_process_times+0xb0) :| *fn 224+ 1.205 raise_softirq+0x14 (run_local_timers+0x30) :| *fn 226+ 1.195 __ipipe_test_and_stall_root+0x14 (raise_softirq+0x30) :| *fn 227+ 1.090 __ipipe_restore_root+0x14 (raise_softirq+0x84) :| *fn 228+ 1.855 __ipipe_stall_root+0x14 (__ipipe_restore_root+0x34) :| *fn 230+ 1.220 scheduler_tick+0x14 (update_process_times+0x7c) :| *fn 231+ 1.405 sched_clock+0x14 (scheduler_tick+0x34) :| *fn 232+ 1.180 run_posix_cpu_timers+0x14 (update_process_times+0x84) :| *fn 234+ 1.545 __ipipe_test_root+0x14 (run_posix_cpu_timers+0x44) :| *fn 235+ 1.835 do_timer+0x14 (timer_interrupt+0x154) :| *fn 237+ 1.140 profile_tick+0x14 (timer_interrupt+0x130) :| *fn 238+ 1.255 profile_hit+0x14 (profile_tick+0x78) :| *fn 239+ 1.195 update_process_times+0x14 (timer_interrupt+0x13c) :| *fn 240+ 1.420 account_system_time+0x14 (update_process_times+0xac) :| *fn 242+ 1.120 update_mem_hiwater+0x14 (account_system_time+0x78) :| *fn 243+ 1.130 run_local_timers+0x14 (update_process_times+0xb0) :| *fn 244+ 1.155 raise_softirq+0x14 (run_local_timers+0x30) :| *fn 245+ 1.350 __ipipe_test_and_stall_root+0x14 (raise_softirq+0x30) :| *fn 247 0.995 __ipipe_restore_root+0x14 (raise_softirq+0x84) :| *fn 248+ 1.835 __ipipe_stall_root+0x14 (__ipipe_restore_root+0x34) :| *fn 249+ 1.185 scheduler_tick+0x14 (update_process_times+0x7c) :| *fn 251+ 1.615 sched_clock+0x14 (scheduler_tick+0x34) :| *fn 252+ 1.085 run_posix_cpu_timers+0x14 (update_process_times+0x84) :| *fn 253+ 1.670 __ipipe_test_root+0x14 (run_posix_cpu_timers+0x44) :| *fn 255+ 2.260 do_timer+0x14 (timer_interrupt+0x154) :| *fn 257+ 1.920 irq_exit+0x14 (timer_interrupt+0xa4) :| *fn 259+ 1.240 do_softirq+0x14 (irq_exit+0x6c) :| *fn 260+ 1.660 __ipipe_test_and_stall_root+0x14 (do_softirq+0x54) :| *fn 262+ 1.810 __do_softirq+0x14 (do_softirq+0x90) :| *fn 264+ 1.565 __ipipe_unstall_root+0x14 (__do_softirq+0x64) <| end 0x80000000 265 1.795 __ipipe_unstall_root+0x70 (__do_softirq+0x64) fn 267 1.755 run_timer_softirq+0x14 (__do_softirq+0x90) fn 269 1.310 __ipipe_stall_root+0x14 (run_timer_softirq+0x50) | *begin 0x80000000 270 0.000 __ipipe_stall_root+0x98 (run_timer_softirq+0x50) bash-3.00# bash-3.00# bash-3.00#