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2025-12-28 - 12:55
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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 rack1slot2.osadl.org (updated Sun Dec 28, 2025 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1861624839,0sleep20-21swapper/219:06:432
1906124536,0sleep30-21swapper/319:07:403
1923123127,0sleep10-21swapper/119:09:381
1936623026,0sleep00-21swapper/019:11:100
339960,0migration/325157-21sh21:24:493
339960,0migration/311711-21sh23:05:103
339960,0migration/311005-21sh00:34:313
329960,0watchdog/32204-21grep19:21:313
29805060,0irq/28-eth0-rx-32207-21irqrtprio21:46:353
27160,0ktimersoftd/20-21swapper/222:13:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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