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2026-04-09 - 00:17
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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 20 highest latencies:
System rack1slot1.osadl.org (updated Wed Apr 08, 2026 12:45:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
207432213152,48sleep30-21swapper/307:07:163
208172207170,24sleep00-21swapper/007:08:130
207692200161,26sleep20-21swapper/207:07:352
207062200163,24sleep10-21swapper/107:06:451
23822750,0sleep00-21swapper/009:35:150
2104999134,4cyclictest25911-21perf09:25:000
2104999110,1cyclictest240-21systemd-journal12:10:000
213052100,0sleep20-21swapper/207:10:122
2107899108,1cyclictest35-21ksoftirqd/308:40:003
210789990,5cyclictest5805-21apt-get11:05:103
210699997,1cyclictest28-21ksoftirqd/208:05:002
210699995,4cyclictest61650irq/122-eno109:55:292
210699994,4cyclictest61650irq/122-eno107:50:102
210499996,1cyclictest9-21ksoftirqd/010:40:000
210499990,5cyclictest240-21systemd-journal08:38:230
3362280,1sleep03336-21perf10:20:000
210789987,1cyclictest35-21ksoftirqd/312:35:133
210789986,1cyclictest35-21ksoftirqd/309:40:013
210789986,1cyclictest35-21ksoftirqd/307:29:273
210789986,1cyclictest35-21ksoftirqd/307:15:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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