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2025-12-07 - 05:16
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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 rackeslot5.osadl.org (updated Sun Dec 07, 2025 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2576899290,28cyclictest23068-21perf23:40:013
2576899290,28cyclictest22500-21apt-get21:20:113
2576799290,28cyclictest0-21swapper/220:30:152
2576599290,29cyclictest0-21swapper/121:50:131
25764992927,1cyclictest626-21gdbus23:35:010
2576499290,28cyclictest2091-21apt-get21:45:110
2576499290,28cyclictest13176-21apt-get21:00:140
2576499290,28cyclictest0-21swapper/020:35:110
25768992826,1cyclictest27439-21sendmail-msp22:40:023
2576899280,27cyclictest14924-21apt-get19:55:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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