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2026-08-19 - 09:33
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackcslot8.osadl.org (updated Wed Aug 19, 2026 00:48:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
281239929094,3cyclictest151rcu_preempt22:40:153
281239929094,3cyclictest151rcu_preempt22:40:153
3273912510,242ptp4l0-21swapper/119:07:441
282299917914,120cyclictest0-21swapper/3123:54:5225
330891174165,6phc2sys0-21swapper/219:05:1712
2806399174174,0cyclictest141rcuc/021:18:330
280899916455,60cyclictest0-21swapper/423:15:1826
2817799163155,1cyclictest151rcu_preempt21:19:0217
266542162154,6sleep130-21swapper/1319:06:485
2806399155154,1cyclictest0-21swapper/022:21:260
2806399155154,1cyclictest0-21swapper/022:21:250
28190991540,90cyclictest0-21swapper/2619:54:1819
282299915213,123cyclictest4286-21taskset20:05:2025
28150991512,102cyclictest0-21swapper/1822:47:5110
280949915026,58cyclictest0-21swapper/523:56:3427
2817799146144,1cyclictest151rcu_preempt00:24:2617
280899914632,75cyclictest0-21swapper/421:40:1126
280899914632,75cyclictest0-21swapper/421:40:1126
280899914619,106cyclictest0-21swapper/419:40:2726
282299914513,96cyclictest0-21swapper/3123:00:2225
280949914542,69cyclictest0-21swapper/523:25:5027
280899914317,108cyclictest25415-21latency_hist23:05:0026
28177991420,87cyclictest0-21swapper/2423:21:2217
280999914230,36cyclictest0-21swapper/623:22:2328
28208991410,84cyclictest0-21swapper/2822:25:2221
28208991410,84cyclictest0-21swapper/2822:25:2221
28147991410,84cyclictest0-21swapper/1700:36:199
280949914144,60cyclictest0-21swapper/500:03:3227
280999914033,70cyclictest0-21swapper/622:08:3728
280999914033,70cyclictest0-21swapper/622:08:3728
280949914046,59cyclictest0-21swapper/523:19:1027
280949914030,64cyclictest0-21swapper/520:53:4727
281359913931,85cyclictest0-21swapper/1423:03:486
280949913933,70cyclictest0-21swapper/523:49:3827
280899913927,67cyclictest0-21swapper/421:19:2426
282089913855,59cyclictest0-21swapper/2823:31:0621
282089913825,69cyclictest0-21swapper/2821:22:5021
280949913858,63cyclictest0-21swapper/500:25:2627
280949913843,60cyclictest0-21swapper/522:48:1027
280949913841,62cyclictest0-21swapper/521:30:0127
280949913812,43cyclictest0-21swapper/521:31:1227
280899913832,63cyclictest0-21swapper/421:34:0626
282299913747,55cyclictest0-21swapper/3119:55:2725
282089913730,69cyclictest0-21swapper/2820:40:2421
281359913728,77cyclictest0-21swapper/1423:41:466
28135991370,84cyclictest0-21swapper/1421:37:466
28135991370,84cyclictest0-21swapper/1421:37:466
280949913724,67cyclictest0-21swapper/522:19:1827
280949913724,67cyclictest0-21swapper/522:19:1827
280899913749,55cyclictest0-21swapper/421:20:2326
280899913728,65cyclictest0-21swapper/423:51:4326
280899913719,71cyclictest0-21swapper/421:47:3526
282299913642,61cyclictest0-21swapper/3100:03:2525
280949913631,62cyclictest0-21swapper/523:00:2727
282299913531,64cyclictest0-21swapper/3122:32:3425
282299913531,64cyclictest0-21swapper/3122:32:3425
282299913530,67cyclictest0-21swapper/3123:17:5825
282299913529,66cyclictest0-21swapper/3100:30:3925
282089913528,65cyclictest0-21swapper/2800:35:1221
281779913566,68cyclictest0-21swapper/2422:04:5917
281779913566,68cyclictest0-21swapper/2422:04:5917
281359913541,65cyclictest0-21swapper/1400:38:576
280949913529,63cyclictest0-21swapper/522:01:0827
280949913529,63cyclictest0-21swapper/522:01:0827
280899913528,72cyclictest0-21swapper/419:30:1726
280639913515,64cyclictest0-21swapper/022:07:150
280639913515,64cyclictest0-21swapper/022:07:150
282299913429,67cyclictest0-21swapper/3100:16:3225
282299913429,63cyclictest0-21swapper/3100:23:2925
282089913430,63cyclictest0-21swapper/2823:45:1521
282089913427,62cyclictest0-21swapper/2823:35:1221
281359913425,65cyclictest0-21swapper/1419:42:396
280949913432,63cyclictest0-21swapper/521:00:1227
280949913429,59cyclictest0-21swapper/522:20:2227
280949913429,59cyclictest0-21swapper/522:20:2227
280949913426,63cyclictest0-21swapper/500:31:5227
280899913449,55cyclictest0-21swapper/419:55:2526
280899913442,59cyclictest0-21swapper/423:37:1726
280899913435,63cyclictest0-21swapper/422:31:0226
280899913435,63cyclictest0-21swapper/422:31:0226
280899913430,71cyclictest0-21swapper/421:10:2226
280899913430,70cyclictest0-21swapper/400:26:5026
280899913430,68cyclictest0-21swapper/421:57:1826
280899913430,68cyclictest0-21swapper/421:57:1826
280899913424,73cyclictest0-21swapper/421:39:0026
280899913424,73cyclictest0-21swapper/421:39:0026
282299913359,63cyclictest0-21swapper/3121:42:5125
282299913359,63cyclictest0-21swapper/3121:42:5125
282299913331,63cyclictest0-21swapper/3121:33:1525
282299913327,63cyclictest0-21swapper/3100:39:4625
282089913331,59cyclictest0-21swapper/2819:33:1721
282089913330,61cyclictest0-21swapper/2822:13:3421
282089913330,61cyclictest0-21swapper/2822:13:3421
281359913328,67cyclictest0-21swapper/1400:33:366
28099991330,83cyclictest0-21swapper/619:45:2528
280949913331,62cyclictest0-21swapper/519:45:1527
280949913330,64cyclictest0-21swapper/519:20:1827
280899913329,74cyclictest0-21swapper/421:53:2626
280899913329,74cyclictest0-21swapper/421:53:2626
280899913329,72cyclictest0-21swapper/419:20:0226
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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