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2026-04-09 - 00:15
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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 Apr 08, 2026 12:49:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
291399377178,2cyclictest151rcu_preempt12:33:3828
29829927376,1cyclictest151rcu_preempt12:06:229
29829927376,1cyclictest151rcu_preempt10:37:199
29829927376,1cyclictest151rcu_preempt10:37:199
3273912720,264ptp4l0-21swapper/107:08:511
330891270263,6phc2sys0-21swapper/207:07:3412
30899918355,46cyclictest151rcu_preempt10:05:1325
30899918355,46cyclictest151rcu_preempt10:05:1325
29529917428,71cyclictest0-21swapper/1211:00:174
29139917413,132cyclictest151rcu_preempt09:47:0428
29139917413,132cyclictest151rcu_preempt09:47:0428
290299167166,1cyclictest151rcu_preempt12:30:1526
29829915421,57cyclictest0-21swapper/1709:30:199
29139915466,87cyclictest52-21ksoftirqd/611:25:3828
302392153147,4sleep30-21swapper/307:05:1223
2944991450,84cyclictest0-21swapper/1112:31:043
29639914124,103cyclictest0-21swapper/1410:26:136
29639914124,103cyclictest0-21swapper/1410:26:136
3073991400,88cyclictest0-21swapper/2911:56:0522
2944991400,85cyclictest0-21swapper/1109:18:213
2944991400,85cyclictest0-21swapper/1109:18:213
2913991400,85cyclictest0-21swapper/611:32:2628
2894991400,87cyclictest0-21swapper/311:30:0023
30829913943,55cyclictest0-21swapper/3011:08:0024
30829913930,71cyclictest0-21swapper/3010:26:1824
30829913930,71cyclictest0-21swapper/3010:26:1824
30509913931,55cyclictest0-21swapper/2607:35:1319
3073991380,87cyclictest0-21swapper/2910:01:4322
3073991380,87cyclictest0-21swapper/2910:01:4222
2894991380,86cyclictest0-21swapper/309:45:1423
2894991380,86cyclictest0-21swapper/309:45:1423
30829913725,75cyclictest0-21swapper/3011:22:4824
2894991361,73cyclictest0-21swapper/311:41:4323
30829913526,65cyclictest0-21swapper/3009:20:0224
29139913419,85cyclictest26432-21timerwakeupswit09:30:2328
30829913324,93cyclictest0-21swapper/3011:32:3424
28899913347,57cyclictest0-21swapper/211:36:0612
28899913338,56cyclictest0-21swapper/212:11:0812
30899913123,84cyclictest0-21swapper/3109:33:2425
29139913133,90cyclictest0-21swapper/607:55:1128
28899913156,67cyclictest0-21swapper/211:46:3312
28899913144,66cyclictest0-21swapper/210:48:1812
28899913128,61cyclictest0-21swapper/211:21:2612
28899913126,63cyclictest0-21swapper/211:05:0912
30899913025,68cyclictest0-21swapper/3111:53:2725
30899913024,105cyclictest0-21swapper/3110:46:0625
30899913024,105cyclictest0-21swapper/3109:20:0325
28899913027,62cyclictest0-21swapper/209:45:1312
28899913027,62cyclictest0-21swapper/209:45:1312
30899912925,97cyclictest31624-1kworker/u65:010:42:2225
30899912925,97cyclictest31624-1kworker/u65:010:42:2225
30899912925,63cyclictest0-21swapper/3108:25:0125
29139912944,42cyclictest0-21swapper/611:10:1628
28899912943,61cyclictest0-21swapper/209:37:4512
28899912943,61cyclictest0-21swapper/209:37:4512
28899912938,56cyclictest0-21swapper/211:42:3112
28899912927,65cyclictest0-21swapper/212:17:3312
28899912926,86cyclictest0-21swapper/212:00:1212
28899912924,63cyclictest0-21swapper/211:15:0112
30899912825,68cyclictest0-21swapper/3111:37:2525
30899912824,66cyclictest0-21swapper/3111:20:1825
28899912828,72cyclictest0-21swapper/210:30:3912
28899912828,72cyclictest0-21swapper/210:30:3912
28899912828,72cyclictest0-21swapper/209:25:2712
28899912828,69cyclictest0-21swapper/209:10:1812
28899912828,69cyclictest0-21swapper/209:10:1812
28899912828,66cyclictest0-21swapper/207:10:1512
28899912827,68cyclictest0-21swapper/210:29:3312
28899912827,68cyclictest0-21swapper/210:29:3312
28899912827,67cyclictest0-21swapper/210:00:1112
28899912827,67cyclictest0-21swapper/210:00:1112
28899912825,61cyclictest0-21swapper/208:20:2912
28899912824,62cyclictest0-21swapper/208:57:2212
30899912723,75cyclictest0-21swapper/3112:37:4925
30739912722,84cyclictest151rcu_preempt09:36:0222
30739912722,84cyclictest151rcu_preempt09:36:0222
29449912720,90cyclictest0-21swapper/1111:33:203
29139912741,68cyclictest0-21swapper/609:36:1228
29139912741,68cyclictest0-21swapper/609:36:1228
29139912723,69cyclictest0-21swapper/611:53:0228
28899912730,67cyclictest0-21swapper/209:34:1412
28899912728,67cyclictest0-21swapper/210:58:2712
28899912725,58cyclictest0-21swapper/212:06:5212
3089991260,86cyclictest0-21swapper/3112:03:5325
3073991260,84cyclictest0-21swapper/2909:13:0422
3073991260,84cyclictest0-21swapper/2909:13:0422
29449912643,57cyclictest0-21swapper/1110:36:093
29449912643,57cyclictest0-21swapper/1110:36:093
28899912629,72cyclictest0-21swapper/209:02:4212
29139912543,53cyclictest0-21swapper/612:27:4628
29139912528,66cyclictest0-21swapper/607:27:3428
29139912526,76cyclictest0-21swapper/611:25:0028
28899912556,66cyclictest0-21swapper/211:31:0312
28899912529,72cyclictest0-21swapper/207:59:2512
28899912527,64cyclictest0-21swapper/207:17:1112
28899912527,63cyclictest0-21swapper/208:10:3812
28899912526,67cyclictest0-21swapper/210:15:4112
28899912526,67cyclictest0-21swapper/210:15:4112
28899912526,61cyclictest0-21swapper/209:17:5812
28899912526,61cyclictest0-21swapper/209:17:5812
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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