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2026-06-21 - 15:24
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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 20 highest latencies:
System rack3slot6.osadl.org (updated Sun Jun 21, 2026 12:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
282869913073,18cyclictest14-21ksoftirqd/010:50:110
282869911817,48cyclictest0-21swapper/012:35:130
282869911811,64cyclictest0-21swapper/008:50:110
282869911184,17cyclictest14-21ksoftirqd/007:25:220
282869911184,17cyclictest14-21ksoftirqd/007:25:220
282869911113,54cyclictest0-21swapper/009:45:130
282869911113,54cyclictest0-21swapper/009:45:130
282869910878,17cyclictest14-21ksoftirqd/009:15:220
282869910772,21cyclictest14-21ksoftirqd/007:20:120
282979910612,71cyclictest0-21swapper/111:10:121
282979910612,71cyclictest0-21swapper/111:10:121
282869910676,19cyclictest14-21ksoftirqd/011:35:130
282869910576,16cyclictest14-21ksoftirqd/008:10:110
282869910480,13cyclictest14-21ksoftirqd/010:10:140
282979910312,67cyclictest0-21swapper/112:05:131
282869910278,15cyclictest14-21ksoftirqd/012:20:110
282979910010,67cyclictest0-21swapper/108:00:121
28297999912,65cyclictest0-21swapper/109:50:131
28297999810,67cyclictest0-21swapper/108:25:221
28297999810,67cyclictest0-21swapper/108:25:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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