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2026-08-29 - 00:11
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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 Aug 28, 2026 12:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1429991157,88cyclictest0-21swapper/011:45:090
14299911017,72cyclictest0-21swapper/012:15:130
1043210522,38sleep00-21swapper/007:07:530
1043210522,38sleep00-21swapper/007:07:530
14319910476,16cyclictest26-21ksoftirqd/111:00:121
14319910172,19cyclictest26-21ksoftirqd/110:15:141
1431999969,18cyclictest26-21ksoftirqd/111:35:131
1431999768,19cyclictest26-21ksoftirqd/110:55:121
1431999563,22cyclictest26-21ksoftirqd/108:45:151
1431999427,47cyclictest243-21systemd-journal08:09:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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