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2026-03-10 - 18:17
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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 rackfslot7.osadl.org (updated Tue Mar 10, 2026 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
282574699940,1cyclictest0-21swapper/512:20:125
2825741997011,19cyclictest0-21swapper/010:42:070
2825741996868,0cyclictest0-21swapper/010:30:130
282574499660,1cyclictest0-21swapper/309:10:143
2825741996426,18cyclictest0-21swapper/011:30:150
2825741996123,2cyclictest1750ktimers/010:01:490
2825741995919,39cyclictest3001941-21seq12:25:350
2825741995919,39cyclictest171ktimers/008:50:240
2825748995819,39cyclictest88-21ksoftirqd/708:40:147
2825741995820,19cyclictest2945444-21diskstats10:45:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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