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2026-03-14 - 22:43
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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 Sat Mar 14, 2026 12:49:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3100799525127,200cyclictest151rcu_preempt09:25:074
3098499326126,197cyclictest151rcu_preempt11:39:2631
3273913080,300ptp4l0-21swapper/107:09:151
266482233224,7sleep240-21swapper/2407:05:1717
311319918211,157cyclictest0-21swapper/2908:55:0022
309779916824,105cyclictest0-21swapper/808:55:2230
311319916511,136cyclictest0-21swapper/2910:47:2222
311319916511,108cyclictest0-21swapper/2911:11:2622
311319916411,113cyclictest0-21swapper/2912:16:0722
311319916311,134cyclictest0-21swapper/2910:19:2322
311319916311,133cyclictest0-21swapper/2908:33:0222
311319915911,120cyclictest0-21swapper/2907:25:4222
311319915911,120cyclictest0-21swapper/2907:25:4122
309779915840,109cyclictest64-21ksoftirqd/811:30:1030
309779915628,72cyclictest0-21swapper/812:28:5530
309779915628,72cyclictest0-21swapper/812:28:5530
309919915330,72cyclictest0-21swapper/1011:35:102
309919915228,86cyclictest0-21swapper/1011:10:092
311319914911,90cyclictest0-21swapper/2909:48:3622
309919914721,125cyclictest0-21swapper/1011:00:132
310579914622,95cyclictest0-21swapper/1910:05:5011
311319914511,83cyclictest0-21swapper/2912:25:4422
311319914511,83cyclictest0-21swapper/2912:25:4422
30965991451,84cyclictest0-21swapper/612:24:4928
30965991451,84cyclictest0-21swapper/612:24:4928
310239914432,82cyclictest0-21swapper/1510:48:127
31007991447,102cyclictest151rcu_preempt10:13:164
311319914211,16cyclictest0-21swapper/2907:20:0222
311319914211,16cyclictest0-21swapper/2907:20:0222
309919913919,98cyclictest0-21swapper/1010:06:582
309659913834,68cyclictest0-21swapper/610:22:0428
310579913712,105cyclictest0-21swapper/1907:29:2911
310579913712,105cyclictest0-21swapper/1907:29:2911
309919913721,111cyclictest0-21swapper/1010:02:172
309779913720,92cyclictest0-21swapper/810:55:1130
311319913511,31cyclictest0-21swapper/2907:55:1422
311319913511,31cyclictest0-21swapper/2907:55:1422
309659913549,59cyclictest0-21swapper/612:15:5428
31131991340,85cyclictest0-21swapper/2907:35:3222
31131991340,85cyclictest0-21swapper/2907:35:3222
309779913444,56cyclictest0-21swapper/809:14:5430
309919913331,60cyclictest0-21swapper/1011:08:122
310079913214,92cyclictest151rcu_preempt10:22:294
311319913112,98cyclictest0-21swapper/2909:38:2522
310079913124,66cyclictest151rcu_preempt09:59:224
309779913152,55cyclictest0-21swapper/810:53:1530
309779913143,54cyclictest0-21swapper/811:50:4130
309779913132,55cyclictest0-21swapper/810:35:3730
309779913127,65cyclictest0-21swapper/808:05:0830
309779913127,65cyclictest0-21swapper/808:05:0830
309779913119,70cyclictest0-21swapper/809:30:2430
30977991310,74cyclictest0-21swapper/809:29:1730
309659913151,56cyclictest0-21swapper/608:18:2628
309659913151,53cyclictest0-21swapper/608:50:0228
309659913148,55cyclictest0-21swapper/611:28:1028
309399913143,71cyclictest0-21swapper/210:15:0912
309779913027,61cyclictest0-21swapper/812:15:3430
309659913031,50cyclictest0-21swapper/608:50:0128
309659913027,62cyclictest0-21swapper/609:25:1228
309659913027,61cyclictest0-21swapper/611:05:4328
309659913024,67cyclictest0-21swapper/611:43:5028
311319912911,77cyclictest0-21swapper/2908:25:1422
31073991291,85cyclictest0-21swapper/2111:25:4414
310239912926,61cyclictest0-21swapper/1510:22:347
309919912928,55cyclictest0-21swapper/1009:21:392
309779912927,61cyclictest0-21swapper/808:43:3730
309659912943,52cyclictest0-21swapper/608:06:2528
309659912943,52cyclictest0-21swapper/608:06:2528
309659912926,67cyclictest0-21swapper/611:14:2628
309659912925,63cyclictest0-21swapper/611:19:4628
310239912818,68cyclictest0-21swapper/1511:28:197
309779912850,57cyclictest0-21swapper/812:09:0930
309779912829,70cyclictest0-21swapper/811:14:3530
309779912826,70cyclictest0-21swapper/811:03:3830
309779912826,68cyclictest0-21swapper/807:40:2130
309779912826,68cyclictest0-21swapper/807:40:2130
309779912826,67cyclictest0-21swapper/810:26:1430
309779912826,67cyclictest0-21swapper/807:25:2430
309779912826,67cyclictest0-21swapper/807:25:2330
309659912848,51cyclictest0-21swapper/609:42:5228
309659912829,63cyclictest0-21swapper/609:03:2928
309659912827,68cyclictest0-21swapper/612:13:1828
309659912826,67cyclictest0-21swapper/610:32:4328
309659912825,62cyclictest0-21swapper/611:56:0628
311319912711,83cyclictest0-21swapper/2910:07:1822
31073991270,67cyclictest0-21swapper/2110:51:0014
310579912720,79cyclictest0-21swapper/1907:20:2411
310579912720,79cyclictest0-21swapper/1907:20:2311
310079912765,17cyclictest151rcu_preempt08:55:124
309779912747,63cyclictest0-21swapper/812:11:5130
309779912733,63cyclictest0-21swapper/811:23:4330
309779912732,57cyclictest0-21swapper/807:55:1730
309779912732,57cyclictest0-21swapper/807:55:1730
309779912729,68cyclictest0-21swapper/811:15:1230
309779912728,70cyclictest0-21swapper/809:45:2130
309659912743,65cyclictest0-21swapper/610:11:1228
309659912730,66cyclictest0-21swapper/610:18:4028
309659912729,67cyclictest0-21swapper/611:32:3628
309659912729,64cyclictest0-21swapper/610:09:1328
309659912728,67cyclictest0-21swapper/609:47:4128
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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