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2026-06-07 - 15:40
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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 rack3slot6.osadl.org (updated Sun Jun 07, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
255459910416,17cyclictest0-21swapper/008:40:100
267212940,5chrt26362-21/usr/sbin/munin10:10:200
25550999249,25cyclictest26-21ksoftirqd/108:30:101
25545999066,13cyclictest0-21swapper/012:20:130
25545998969,12cyclictest14-21ksoftirqd/012:15:150
25550998852,19cyclictest26-21ksoftirqd/111:55:241
237302850,17sleep0171rcuc/010:00:340
25545998251,18cyclictest0-21swapper/008:50:120
25545998152,16cyclictest14-21ksoftirqd/008:55:130
2379928130,39sleep00-21swapper/007:05:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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