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2026-06-18 - 17:15
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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
Characteristics of the 50 highest latencies:
System rackdslot1.osadl.org (updated Thu Jun 18, 2026 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2434821630,2sleep0531899cyclictest10:10:100
1190821250,6sleep2532099cyclictest09:40:272
5321997029,8cyclictest41-21ksoftirqd/310:02:223
5321996632,7cyclictest41-21ksoftirqd/309:20:013
5321996627,7cyclictest41-21ksoftirqd/307:40:273
5321996624,11cyclictest41-21ksoftirqd/310:54:013
5321996529,5cyclictest41-21ksoftirqd/307:45:253
5321996528,4cyclictest41-21ksoftirqd/311:34:373
5321996425,8cyclictest41-21ksoftirqd/307:13:443
5321996422,11cyclictest41-21ksoftirqd/309:10:023
5321996330,9cyclictest41-21ksoftirqd/311:40:233
5321996330,9cyclictest41-21ksoftirqd/311:40:233
5321996324,8cyclictest41-21ksoftirqd/309:50:063
5321996228,8cyclictest41-21ksoftirqd/308:00:173
5321996226,8cyclictest41-21ksoftirqd/311:55:173
5321996225,8cyclictest41-21ksoftirqd/311:17:273
5321996225,7cyclictest41-21ksoftirqd/308:37:253
5321996224,7cyclictest41-21ksoftirqd/309:00:143
5321996224,4cyclictest41-21ksoftirqd/312:27:533
134491620,5ptp4l0-21swapper/009:50:110
5321996127,7cyclictest41-21ksoftirqd/311:20:233
5321996125,4cyclictest41-21ksoftirqd/309:30:183
5321996125,10cyclictest41-21ksoftirqd/311:10:013
5321996029,9cyclictest41-21ksoftirqd/312:00:243
5321996029,7cyclictest41-21ksoftirqd/309:25:133
5321996027,10cyclictest41-21ksoftirqd/307:35:193
5321996021,4cyclictest41-21ksoftirqd/308:50:233
5321995924,8cyclictest41-21ksoftirqd/310:15:013
5321995923,7cyclictest41-21ksoftirqd/310:35:403
5321995919,8cyclictest41-21ksoftirqd/308:06:323
5321995828,7cyclictest41-21ksoftirqd/310:05:133
5321995828,3cyclictest41-21ksoftirqd/308:25:003
5321995826,6cyclictest41-21ksoftirqd/309:35:183
5321995820,8cyclictest41-21ksoftirqd/309:55:263
134491580,4ptp4l0-21swapper/208:09:062
134491580,4ptp4l0-21swapper/207:10:512
134491580,3ptp4l0-21swapper/212:16:502
134491580,3ptp4l0-21swapper/211:45:222
134491580,3ptp4l0-21swapper/007:40:240
532199573,7cyclictest12451-21latency_hist08:35:003
532199573,7cyclictest12451-21latency_hist08:35:003
5321995731,7cyclictest41-21ksoftirqd/312:05:193
5321995731,6cyclictest41-21ksoftirqd/312:35:223
5321995728,7cyclictest41-21ksoftirqd/311:25:123
5321995726,9cyclictest41-21ksoftirqd/309:45:143
5321995724,7cyclictest41-21ksoftirqd/308:10:253
5321995722,6cyclictest41-21ksoftirqd/308:55:243
5321995720,7cyclictest41-21ksoftirqd/309:40:293
5321995720,7cyclictest41-21ksoftirqd/307:31:133
134491570,4ptp4l0-21swapper/208:45:082
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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