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2026-05-15 - 18:54
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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 May 15, 2026 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
45722800,2sleep60-21swapper/610:08:146
110422800,0sleep10-21swapper/109:19:201
9422790,0sleep10-21swapper/108:50:201
153312790,1sleep6681ktimersoftd/610:41:246
113022780,0sleep70-21swapper/712:25:597
99942760,1sleep21-21systemd12:12:082
92932740,0sleep30-21swapper/309:14:343
52272740,0sleep50-21swapper/511:35:005
264262740,2sleep6658-21polkitd09:57:406
199072740,0sleep10-21swapper/111:50:351
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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