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2026-04-10 - 23:27
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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 rack0slot0.osadl.org (updated Fri Apr 10, 2026 12:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
267821450,0sleep10-21swapper/109:52:551
1032721100,1sleep669-21ksoftirqd/610:07:506
55992860,0sleep30-21swapper/312:17:073
55992860,0sleep30-21swapper/312:17:073
38022850,1sleep10-21swapper/109:39:171
200192850,0sleep020020-21sshd11:41:530
220922800,0sleep50-21swapper/512:14:595
135462790,1sleep40-21swapper/409:54:354
160842770,1sleep40-21swapper/409:36:164
75132750,0sleep50-21swapper/511:21:305
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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