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2026-03-22 - 05:54
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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 Sun Mar 22, 2026 00:48:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
55259932423,102cyclictest173-21ksoftirqd/2621:12:3819
55169929735,64cyclictest167-21ksoftirqd/2521:18:4518
3273912610,253ptp4l0-21swapper/119:09:061
55409918010,124cyclictest0-21swapper/2819:55:1821
55409917513,108cyclictest0-21swapper/2823:56:3021
54769917258,113cyclictest125-21ksoftirqd/1800:11:4610
55339916631,134cyclictest0-21swapper/2700:09:4920
55339916532,101cyclictest0-21swapper/2700:10:2020
54879916124,75cyclictest151rcu_preempt22:40:2814
54879916124,75cyclictest151rcu_preempt22:40:2814
55409915710,90cyclictest0-21swapper/2820:15:0021
551699157146,4cyclictest151rcu_preempt23:31:1718
551699157146,4cyclictest151rcu_preempt23:31:1718
54879915713,114cyclictest151rcu_preempt23:19:2814
54359915633,119cyclictest0-21swapper/821:15:1530
54359915532,122cyclictest0-21swapper/822:06:2030
54359915532,122cyclictest0-21swapper/822:06:2030
5497991490,91cyclictest0-21swapper/2319:50:0016
55579914853,86cyclictest0-21swapper/3021:12:5624
55409914810,71cyclictest0-21swapper/2822:25:2421
5417991471,143cyclictest151rcu_preempt22:36:4526
5417991471,143cyclictest151rcu_preempt22:36:4526
5557991460,90cyclictest0-21swapper/3020:33:0824
54359914547,52cyclictest0-21swapper/823:11:5430
54359914547,52cyclictest0-21swapper/823:11:5430
54879914415,108cyclictest151rcu_preempt22:29:3314
55169914350,80cyclictest0-21swapper/2522:21:4918
55169914349,66cyclictest0-21swapper/2521:05:2318
54019914348,67cyclictest0-21swapper/100:19:321
54879914215,114cyclictest151rcu_preempt22:50:5614
54019914246,65cyclictest0-21swapper/123:06:191
54019914246,65cyclictest0-21swapper/123:06:181
55579914145,78cyclictest28502-21taskset23:23:3724
55579914145,78cyclictest28502-21taskset23:23:3724
5487991410,81cyclictest0-21swapper/2123:20:2814
5487991410,81cyclictest0-21swapper/2123:20:2814
54019914147,69cyclictest0-21swapper/122:39:531
54019914147,69cyclictest0-21swapper/122:39:521
54019914146,57cyclictest0-21swapper/120:22:151
54019914130,68cyclictest0-21swapper/123:24:141
54019914130,68cyclictest0-21swapper/123:24:131
54019914130,66cyclictest0-21swapper/122:41:111
54019914130,66cyclictest0-21swapper/122:41:111
55169914050,43cyclictest0-21swapper/2522:34:2218
54019914052,62cyclictest0-21swapper/123:53:531
54019914051,59cyclictest0-21swapper/119:33:051
54019914047,73cyclictest22-21ksoftirqd/120:30:151
54019914029,69cyclictest0-21swapper/122:09:401
54019914029,69cyclictest0-21swapper/122:09:391
5396991400,88cyclictest0-21swapper/023:40:010
5396991400,88cyclictest0-21swapper/023:40:010
55579913944,77cyclictest0-21swapper/3023:30:1924
55579913944,77cyclictest0-21swapper/3023:30:1824
55259913941,97cyclictest0-21swapper/2623:26:3119
55259913941,97cyclictest0-21swapper/2623:26:3019
55409913844,55cyclictest0-21swapper/2822:30:4521
54019913847,66cyclictest0-21swapper/119:13:191
54019913844,64cyclictest0-21swapper/100:13:071
54019913843,67cyclictest0-21swapper/123:02:021
54019913843,67cyclictest0-21swapper/123:02:021
53969913814,103cyclictest0-21swapper/021:37:190
5487991370,81cyclictest0-21swapper/2121:51:1214
54019913756,67cyclictest0-21swapper/122:33:101
54019913754,62cyclictest0-21swapper/122:23:001
54019913753,67cyclictest0-21swapper/100:26:281
55409913636,58cyclictest0-21swapper/2823:45:2021
55409913621,112cyclictest19689-21ssh22:10:1421
54179913630,102cyclictest151rcu_preempt19:45:5426
54019913660,65cyclictest0-21swapper/123:12:121
54019913660,65cyclictest0-21swapper/123:12:111
54019913630,66cyclictest0-21swapper/123:27:101
54019913630,66cyclictest0-21swapper/123:27:091
54019913629,68cyclictest0-21swapper/121:19:241
54019913627,68cyclictest0-21swapper/100:24:201
54019913627,65cyclictest0-21swapper/122:12:511
54019913627,35cyclictest0-21swapper/122:25:421
55409913531,72cyclictest0-21swapper/2823:00:2521
55409913531,72cyclictest0-21swapper/2823:00:2521
55409913510,79cyclictest0-21swapper/2821:35:1121
55169913549,54cyclictest0-21swapper/2523:56:2418
5417991354,101cyclictest0-21swapper/421:36:1326
5417991350,86cyclictest0-21swapper/400:25:1526
54019913557,67cyclictest0-21swapper/120:25:271
54019913536,65cyclictest0-21swapper/120:45:451
54019913530,64cyclictest0-21swapper/121:39:591
54019913529,65cyclictest0-21swapper/121:05:321
55409913452,58cyclictest0-21swapper/2823:10:1821
55409913452,58cyclictest0-21swapper/2823:10:1721
55409913428,67cyclictest0-21swapper/2820:05:2321
54019913458,65cyclictest0-21swapper/123:19:091
54019913452,65cyclictest0-21swapper/100:39:191
54019913429,62cyclictest0-21swapper/122:02:101
54019913429,62cyclictest0-21swapper/119:15:271
54019913428,64cyclictest0-21swapper/123:56:001
54019913427,62cyclictest0-21swapper/123:40:301
54019913427,62cyclictest0-21swapper/123:40:301
55409913330,73cyclictest0-21swapper/2823:42:5521
55409913330,73cyclictest0-21swapper/2823:42:5421
55409913328,69cyclictest0-21swapper/2822:40:1821
55409913328,69cyclictest0-21swapper/2822:40:1821
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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