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2026-06-23 - 20:24
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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 rackeslot5.osadl.org (updated Tue Jun 23, 2026 12:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20256992927,1cyclictest0-21swapper/309:25:003
2025699290,28cyclictest3113-21munin-run08:50:003
2025699290,28cyclictest0-21swapper/309:45:123
2025599290,28cyclictest917-21apt-get12:10:122
2025599290,28cyclictest22829-21apt-get07:15:122
20254992928,0cyclictest7359-21apt-get11:15:111
2025499290,28cyclictest9248-21munin-run07:55:011
2025499290,28cyclictest0-21swapper/110:10:131
2025499290,0cyclictest0-21swapper/108:20:121
2025399290,28cyclictest0-21swapper/007:25:120
2025399290,1cyclictest15600-21apt-get09:15:110
20256992828,0cyclictest0-21swapper/312:10:123
20256992827,1cyclictest12149-21apt-get08:00:113
20256992827,0cyclictest7181-21apt-get07:50:123
20256992827,0cyclictest0-21swapper/308:30:013
20255992828,0cyclictest0-21swapper/211:30:112
20255992828,0cyclictest0-21swapper/211:15:112
20255992827,1cyclictest2717-21apt-get11:05:102
20255992827,0cyclictest10237-21apt-get12:30:132
2025599280,0cyclictest4817-21apt-get10:00:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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