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2026-03-19 - 07:01
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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 rack5slot3.osadl.org (updated Thu Mar 19, 2026 00:58:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4769986762,84cyclictest0-21swapper/722:27:037
46499712243,338cyclictest9987-21nscd21:50:131
4639969822,3cyclictest0-21swapper/023:43:000
4639969822,3cyclictest0-21swapper/023:42:590
4769969560,84cyclictest0-21swapper/700:36:537
463996710,120cyclictest0-21swapper/022:31:340
4769966833,84cyclictest0-21swapper/723:01:007
4639966732,41cyclictest0-21swapper/021:00:180
4639964714,3cyclictest0-21swapper/021:35:150
4739963439,84cyclictest0-21swapper/421:30:044
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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