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2025-09-18 - 03:12
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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 Sep 18, 2025 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
202729910977,20cyclictest26-21ksoftirqd/119:15:181
202729910679,17cyclictest26-21ksoftirqd/121:30:161
202729910576,19cyclictest26-21ksoftirqd/119:20:141
202729910472,21cyclictest26-21ksoftirqd/120:55:151
20272999968,21cyclictest26-21ksoftirqd/100:35:141
20272999768,20cyclictest26-21ksoftirqd/122:35:141
20272999765,19cyclictest26-21ksoftirqd/119:35:121
295452950,33sleep014-21ksoftirqd/021:10:000
20272999365,17cyclictest26-21ksoftirqd/122:30:151
1886129335,44sleep00-21swapper/019:05:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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