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2026-07-04 - 08:50
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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 20 highest latencies:
System rack3slot6.osadl.org (updated Sat Jul 04, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2950228918,25sleep00-21swapper/019:06:590
2865028923,10sleep10-21swapper/119:05:211
29965998146,24cyclictest29446-21apt-get22:10:120
29965997943,24cyclictest12148-21apt-get19:50:120
29965997941,24cyclictest0-21swapper/021:30:110
29965997728,43cyclictest14-21ksoftirqd/023:42:560
29965997637,25cyclictest0-21swapper/000:20:100
29969997438,26cyclictest15078-21apt-get21:30:111
29965997447,14cyclictest25345-21apt-get23:30:210
29965997445,15cyclictest24419-21apt-get20:25:130
29969997343,15cyclictest15723-21apt-get00:35:121
29969997335,24cyclictest13885-21apt-get19:55:111
29965997344,20cyclictest4564-21apt-get21:00:220
29965997344,14cyclictest13982-21apt-get00:30:110
29965997339,22cyclictest0-21swapper/022:00:120
29965997338,25cyclictest0-21swapper/019:55:110
29965997330,31cyclictest0-21swapper/021:40:130
29965997240,25cyclictest0-21swapper/020:05:110
29965997238,27cyclictest0-21swapper/020:20:130
29965997236,26cyclictest0-21swapper/023:20:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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