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2026-08-06 - 03:51
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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 Thu Aug 06, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
282024536,0sleep20-21swapper/219:28:172
2841323627,0sleep30-21swapper/319:24:343
258923425,0sleep10-21swapper/119:25:401
286423319,0sleep00-21swapper/019:28:430
329970,0watchdog/329912-21sh00:09:173
30039976,0cyclictest0-21swapper/022:20:340
339960,0migration/38496-21sh23:17:233
339960,0migration/332667-21sh00:46:383
339960,0migration/332544-21sh21:55:053
339960,0migration/318023-21sh22:07:043
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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