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2026-07-15 - 12:41
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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 Wed Jul 15, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2463125646,0sleep30-21swapper/319:24:183
2484923426,0sleep20-21swapper/219:26:502
2469023324,0sleep10-21swapper/119:25:011
2455223329,0sleep00-21swapper/019:23:230
249969977,0cyclictest0-21swapper/221:28:092
339960,0migration/330518-21sh22:56:143
339960,0migration/325778-21sh22:15:463
339960,0migration/319778-21sh22:31:393
339960,0migration/318032-21sh00:40:083
339960,0migration/313962-21sh00:01:373
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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