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2026-06-18 - 18:10
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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 10 highest latencies:
System rack3slot6.osadl.org (updated Thu Jun 18, 2026 12:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
279149910477,16cyclictest14-21ksoftirqd/008:20:130
279149910380,15cyclictest14-21ksoftirqd/009:55:120
279149910373,18cyclictest14-21ksoftirqd/009:25:140
279149910271,20cyclictest14-21ksoftirqd/011:05:120
27914999873,17cyclictest14-21ksoftirqd/010:20:110
27914999868,20cyclictest14-21ksoftirqd/007:40:150
27914999868,18cyclictest14-21ksoftirqd/011:10:110
27914999566,19cyclictest14-21ksoftirqd/007:55:130
27914999565,20cyclictest14-21ksoftirqd/011:25:130
27914999411,40cyclictest14-21ksoftirqd/010:40:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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