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2026-06-20 - 01:10
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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 20 highest latencies:
System rackfslot7.osadl.org (updated Fri Jun 19, 2026 12:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8725779913212,79cyclictest914127-21kworker/u32:1+events_unbound09:25:233
87257799867,59cyclictest996021-21timerwakeupswit10:50:223
872577997718,40cyclictest964160-21aten2.4_rfpower09:55:123
872578997537,19cyclictest994310-21kworker/u32:3+flush-8:011:14:564
872577997537,19cyclictest945887-21ntpq09:20:203
872577997456,18cyclictest1043251-21cron12:20:003
872578997354,1cyclictest601ktimers/407:45:174
872577997214,39cyclictest871-21mta-sts-daemon11:46:103
872577997133,19cyclictest1-21systemd10:30:023
872577997113,39cyclictest0-21swapper/312:37:023
872577997110,59cyclictest931327-21cat08:55:163
872577996911,39cyclictest915384-21ntpq08:25:203
872577996547,18cyclictest511ktimers/307:18:183
872574996546,18cyclictest0-21swapper/010:10:160
87257799634,19cyclictest0-21swapper/308:30:563
872577996121,39cyclictest870-21mta-sts-daemon11:28:263
87257799590,20cyclictest997074-21aten2.4_rfpower10:55:123
872577995720,37cyclictest0-21swapper/308:18:323
872578995618,38cyclictest0-21swapper/408:30:194
872578995537,18cyclictest1027341-21kworker/u32:5+events_unbound12:02:594
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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