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2026-08-28 - 02:23
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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 Aug 28, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
759123626,0sleep20-21swapper/219:27:122
782823228,0sleep30-21swapper/319:30:023
761723019,0sleep00-21swapper/019:27:300
780122925,0sleep10-21swapper/119:29:401
8013992020,0cyclictest3524-21snmpd21:21:261
8012991212,0cyclictest3858-21sensors20:31:390
339960,0migration/36389-21sh23:34:103
339960,0migration/35188-21sh23:16:153
339960,0migration/329795-21sh00:45:553
339960,0migration/322628-21sh00:59:363
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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