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2026-06-05 - 11:26
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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 Fri Jun 05, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25877999954,23cyclictest14-21ksoftirqd/023:20:150
25883999266,14cyclictest26-21ksoftirqd/121:30:131
25883999266,14cyclictest26-21ksoftirqd/121:30:131
25883999266,13cyclictest26-21ksoftirqd/119:40:221
25883999162,17cyclictest26-21ksoftirqd/122:30:121
2587799905,65cyclictest0-21swapper/022:55:130
25883998758,17cyclictest26-21ksoftirqd/100:05:161
25883998656,19cyclictest26-21ksoftirqd/121:50:241
25883998656,18cyclictest26-21ksoftirqd/123:45:151
25877998647,21cyclictest14-21ksoftirqd/019:55:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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