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2026-07-10 - 08:19
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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 Fri Jul 10, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2041923726,0sleep20-21swapper/219:26:552
2042823524,0sleep10-21swapper/119:27:021
1939623423,0sleep00-21swapper/019:22:370
2024522925,0sleep30-21swapper/319:24:523
205169970,0cyclictest28898-21idleruntime19:32:301
339960,0migration/37539-21idleruntime-cro23:42:183
339960,0migration/321785-21sh23:30:293
329960,0watchdog/315172-21tr00:42:333
29805060,0irq/28-eth0-rx-29228-21cut22:37:373
29805060,0irq/28-eth0-rx-26156-21cut00:27:373
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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