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2025-09-18 - 19:04
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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 rack4slot6.osadl.org (updated Thu Sep 18, 2025 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3259821280,0sleep778-21ksoftirqd/707:10:007
30055521100,95pltrace0-21swapper/607:10:006
3005552840,75pltrace0-21swapper/507:05:145
3216428346,10sleep30-21swapper/307:05:573
3005552820,74pltrace0-21swapper/207:07:252
3213327662,10sleep10-21swapper/107:05:311
2966227142,10sleep40-21swapper/407:05:024
3215226147,10sleep00-21swapper/007:05:460
1362252300,2pltrace0-21swapper/708:30:177
858352270,20pltrace0-21swapper/611:18:196
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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