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2026-07-17 - 02:58
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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
Characteristics of the 100 highest latencies:
System rackdslot3.osadl.org (updated Thu Jul 16, 2026 12:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
279192239169,23sleep20-21swapper/207:05:552
139491209176,22phc2sys0-21swapper/307:05:313
281312204172,22sleep10-21swapper/107:08:381
281252202169,22sleep00-21swapper/007:08:340
170392980,3sleep117042-21mailstats07:50:231
139391800,1ptp4l29065-21timerandwakeup08:15:273
139391690,1ptp4l401ktimersoftd/309:25:163
38612630,2sleep10-21swapper/108:30:261
139391580,1ptp4l401ktimersoftd/309:55:113
139391560,1ptp4l401ktimersoftd/307:18:553
2291825420,9sleep125-21ksoftirqd/108:05:151
46422520,2sleep00-21swapper/010:50:130
58722510,1sleep25873-21ls07:30:012
226272510,1sleep20-21swapper/212:35:132
28671994741,3cyclictest25870-21latency_hist09:19:593
139391420,0ptp4l401ktimersoftd/308:41:403
28671994135,4cyclictest28176-21dump-pmu-power11:40:003
28670994127,12cyclictest33-21ksoftirqd/209:00:192
139391410,34ptp4l0-21swapper/307:10:013
28670994036,3cyclictest33-21ksoftirqd/210:55:002
28670994035,3cyclictest33-21ksoftirqd/207:20:002
139391400,1ptp4l401ktimersoftd/312:37:483
28670993936,2cyclictest33-21ksoftirqd/209:40:002
28670993929,9cyclictest33-21ksoftirqd/207:30:222
28670993928,9cyclictest33-21ksoftirqd/210:15:262
28670993928,9cyclictest33-21ksoftirqd/210:15:262
28670993827,9cyclictest33-21ksoftirqd/210:30:192
28670993827,9cyclictest33-21ksoftirqd/207:40:252
28668993832,4cyclictest9-21ksoftirqd/009:00:000
28670993732,3cyclictest33-21ksoftirqd/210:05:002
28670993732,3cyclictest33-21ksoftirqd/208:04:592
28670993731,4cyclictest33-21ksoftirqd/211:03:072
28670993731,4cyclictest33-21ksoftirqd/210:25:002
28670993726,9cyclictest33-21ksoftirqd/207:45:152
28670993724,11cyclictest33-21ksoftirqd/210:15:002
28671993630,4cyclictest41-21ksoftirqd/310:18:323
28671993630,4cyclictest41-21ksoftirqd/310:18:313
28671993630,4cyclictest41-21ksoftirqd/308:06:323
28670993631,3cyclictest33-21ksoftirqd/212:25:172
28670993631,3cyclictest33-21ksoftirqd/212:20:002
28670993630,4cyclictest33-21ksoftirqd/212:21:322
28670993630,4cyclictest33-21ksoftirqd/210:26:322
28670993625,9cyclictest33-21ksoftirqd/212:30:132
28669993631,3cyclictest25-21ksoftirqd/110:45:001
28669993630,4cyclictest25-21ksoftirqd/111:19:551
28669993630,4cyclictest25-21ksoftirqd/109:32:271
28668993630,4cyclictest9-21ksoftirqd/009:03:300
28671993530,3cyclictest41-21ksoftirqd/312:20:113
28671993530,3cyclictest41-21ksoftirqd/310:39:013
28671993529,4cyclictest41-21ksoftirqd/312:05:063
28671993529,4cyclictest41-21ksoftirqd/311:26:023
28671993529,4cyclictest41-21ksoftirqd/309:22:463
28671993529,4cyclictest41-21ksoftirqd/309:04:263
28671993529,4cyclictest41-21ksoftirqd/307:33:583
28671993528,5cyclictest41-21ksoftirqd/310:09:563
28670993531,2cyclictest33-21ksoftirqd/209:15:002
28670993530,3cyclictest33-21ksoftirqd/211:10:002
28670993530,3cyclictest33-21ksoftirqd/209:30:252
28670993530,3cyclictest33-21ksoftirqd/208:27:302
28670993529,4cyclictest33-21ksoftirqd/211:45:552
28670993529,4cyclictest33-21ksoftirqd/208:16:552
28670993529,4cyclictest33-21ksoftirqd/207:14:162
28670993529,3cyclictest33-21ksoftirqd/211:45:002
28670993529,3cyclictest33-21ksoftirqd/208:35:182
28670993528,4cyclictest3310-21cron07:25:002
28670993524,9cyclictest33-21ksoftirqd/211:10:252
28670993522,11cyclictest33-21ksoftirqd/207:35:482
28669993530,3cyclictest25-21ksoftirqd/107:15:111
28669993529,4cyclictest25-21ksoftirqd/112:27:381
28669993529,4cyclictest25-21ksoftirqd/111:23:151
28669993529,4cyclictest25-21ksoftirqd/109:46:081
28669993529,4cyclictest25-21ksoftirqd/108:25:101
28669993529,4cyclictest25-21ksoftirqd/107:59:091
28669993528,4cyclictest25-21ksoftirqd/111:53:591
28668993529,4cyclictest9-21ksoftirqd/009:09:400
2866899350,2cyclictest121rcu_preempt11:50:430
57898340,1rtkit-daemon0-21swapper/111:27:021
28671993429,3cyclictest41-21ksoftirqd/312:18:433
28671993429,3cyclictest41-21ksoftirqd/309:09:593
28671993428,4cyclictest41-21ksoftirqd/308:34:053
28671993428,4cyclictest41-21ksoftirqd/307:39:003
28670993430,3cyclictest33-21ksoftirqd/209:45:132
28670993429,2cyclictest33-21ksoftirqd/210:55:182
28670993428,4cyclictest33-21ksoftirqd/211:33:092
28670993423,9cyclictest33-21ksoftirqd/208:55:272
28669993429,3cyclictest25-21ksoftirqd/107:25:131
28669993429,3cyclictest25-21ksoftirqd/107:12:581
28669993428,4cyclictest25-21ksoftirqd/111:48:551
28669993428,4cyclictest25-21ksoftirqd/110:59:411
28669993428,4cyclictest25-21ksoftirqd/108:52:041
28669993428,4cyclictest25-21ksoftirqd/108:47:541
28669993428,4cyclictest25-21ksoftirqd/108:42:451
28669993428,4cyclictest25-21ksoftirqd/107:37:221
28668993428,4cyclictest9-21ksoftirqd/009:23:570
28668993428,4cyclictest9-21ksoftirqd/007:56:220
28671993328,3cyclictest41-21ksoftirqd/311:05:473
28671993328,3cyclictest41-21ksoftirqd/310:20:313
28671993328,3cyclictest41-21ksoftirqd/308:45:113
28671993328,3cyclictest41-21ksoftirqd/308:37:303
28671993328,3cyclictest41-21ksoftirqd/308:02:313
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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