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2026-04-21 - 04:04
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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 Tue Apr 21, 2026 00:49:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273914410,426ptp4l0-21swapper/119:05:191
330891311302,6phc2sys0-21swapper/219:05:2312
239279927020,53cyclictest151rcu_preempt00:10:2313
239139916577,40cyclictest151rcu_preempt22:27:559
238629916120,121cyclictest0-21swapper/520:00:2727
239599915921,54cyclictest0-21swapper/2819:35:1521
2383399157156,1cyclictest151rcu_preempt23:30:300
239599915421,82cyclictest0-21swapper/2822:38:4821
239599915312,130cyclictest0-21swapper/2819:40:1921
238339915214,101cyclictest151rcu_preempt21:55:220
238339915214,101cyclictest151rcu_preempt21:55:210
239599914722,78cyclictest0-21swapper/2800:10:1521
2384399147143,1cyclictest151rcu_preempt22:02:0012
2384399147143,1cyclictest151rcu_preempt22:01:5912
238629914661,63cyclictest0-21swapper/500:17:1727
23913991440,84cyclictest0-21swapper/1723:51:509
23951991410,82cyclictest0-21swapper/2623:04:2419
238339914131,83cyclictest151rcu_preempt22:57:240
239599914021,73cyclictest0-21swapper/2800:30:1721
239599914021,101cyclictest0-21swapper/2820:23:2221
239519914050,58cyclictest0-21swapper/2622:22:4319
239339913926,72cyclictest0-21swapper/2219:35:2215
23922991399,126cyclictest0-21swapper/1920:52:1711
238629913951,56cyclictest0-21swapper/523:48:2527
23973991380,85cyclictest0-21swapper/3123:36:0125
238629913852,58cyclictest0-21swapper/522:12:4527
238629913852,58cyclictest0-21swapper/522:12:4527
239519913747,59cyclictest0-21swapper/2623:28:2719
239339913723,80cyclictest4513-21taskset22:30:2415
239339913723,80cyclictest4513-21taskset22:30:2315
239519913648,58cyclictest0-21swapper/2620:05:2219
23951991361,111cyclictest0-21swapper/2623:56:4719
239519913541,58cyclictest0-21swapper/2621:38:5319
239519913541,58cyclictest0-21swapper/2621:38:5219
239519913530,71cyclictest0-21swapper/2620:00:2019
239519913529,64cyclictest0-21swapper/2622:11:3019
239519913529,64cyclictest0-21swapper/2622:11:3019
239519913528,70cyclictest0-21swapper/2621:10:2219
239519913528,70cyclictest0-21swapper/2621:10:2219
238629913542,61cyclictest0-21swapper/522:07:4127
238629913542,61cyclictest0-21swapper/522:07:4127
238629913524,110cyclictest0-21swapper/522:57:0527
23951991340,79cyclictest0-21swapper/2623:10:1619
239139913437,15cyclictest0-21swapper/1721:40:539
239139913437,15cyclictest0-21swapper/1721:40:529
238629913447,55cyclictest0-21swapper/521:41:1327
238629913447,55cyclictest0-21swapper/521:41:1227
238629913427,61cyclictest0-21swapper/520:50:3627
23833991340,79cyclictest0-21swapper/023:35:180
239599913321,72cyclictest0-21swapper/2821:45:0021
239599913321,72cyclictest0-21swapper/2821:45:0021
239599913321,69cyclictest0-21swapper/2821:16:0021
239599913321,69cyclictest0-21swapper/2821:16:0021
239519913328,62cyclictest0-21swapper/2622:06:4119
239519913328,62cyclictest0-21swapper/2622:06:4119
238629913357,59cyclictest0-21swapper/523:51:3827
238629913331,61cyclictest0-21swapper/521:16:0527
238629913331,61cyclictest0-21swapper/521:16:0527
238629913330,68cyclictest0-21swapper/522:45:5327
238629913326,66cyclictest0-21swapper/519:26:1627
239519913245,54cyclictest0-21swapper/2622:48:2219
239519913238,59cyclictest0-21swapper/2600:03:1119
238629913252,58cyclictest0-21swapper/500:34:2227
238629913247,57cyclictest0-21swapper/523:56:2727
238629913231,71cyclictest0-21swapper/519:41:3127
238629913230,71cyclictest0-21swapper/500:12:2827
239519913129,72cyclictest0-21swapper/2621:18:3519
239519913129,72cyclictest0-21swapper/2621:18:3519
239519913124,64cyclictest0-21swapper/2622:57:2719
238629913129,67cyclictest0-21swapper/523:05:0727
238629913129,67cyclictest0-21swapper/522:52:1727
238629913128,67cyclictest0-21swapper/521:54:3427
238629913128,67cyclictest0-21swapper/521:54:3327
238629913128,66cyclictest0-21swapper/522:37:5127
238629913128,66cyclictest0-21swapper/522:34:5627
238629913128,66cyclictest0-21swapper/522:34:5527
238629913127,72cyclictest0-21swapper/520:45:0627
239599913021,56cyclictest0-21swapper/2822:43:2421
239519913028,64cyclictest0-21swapper/2623:23:0619
238629913032,76cyclictest0-21swapper/520:20:4227
238629913027,67cyclictest0-21swapper/521:57:4727
238629913027,67cyclictest0-21swapper/521:57:4727
239519912928,69cyclictest0-21swapper/2621:34:3719
239519912928,69cyclictest0-21swapper/2621:34:3619
239519912926,66cyclictest0-21swapper/2600:35:1519
239139912946,54cyclictest0-21swapper/1723:04:159
238629912931,69cyclictest0-21swapper/500:08:1227
238629912930,70cyclictest0-21swapper/500:01:1427
238629912929,74cyclictest0-21swapper/521:00:0327
238629912929,72cyclictest0-21swapper/521:26:4727
238629912929,72cyclictest0-21swapper/521:26:4627
238629912929,70cyclictest0-21swapper/520:33:0027
238629912928,65cyclictest0-21swapper/522:28:1527
238629912926,71cyclictest0-21swapper/520:15:0927
239599912821,66cyclictest0-21swapper/2823:31:3021
239599912816,87cyclictest0-21swapper/2822:08:5321
239599912816,87cyclictest0-21swapper/2822:08:5321
239519912842,56cyclictest0-21swapper/2621:23:2319
239519912842,56cyclictest0-21swapper/2621:23:2219
239519912829,71cyclictest0-21swapper/2620:25:0819
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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