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2026-08-20 - 06:14
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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 Thu Aug 20, 2026 00:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14855991208,55cyclictest0-21swapper/123:05:111
148519910676,19cyclictest14-21ksoftirqd/022:25:120
148519910376,18cyclictest14-21ksoftirqd/023:20:130
148519910173,18cyclictest14-21ksoftirqd/019:30:110
148519910170,20cyclictest14-21ksoftirqd/021:05:120
148519910170,19cyclictest14-21ksoftirqd/020:25:150
148519910075,17cyclictest14-21ksoftirqd/021:10:120
148519910071,18cyclictest14-21ksoftirqd/000:15:130
14851999867,20cyclictest14-21ksoftirqd/020:30:110
14851999772,17cyclictest14-21ksoftirqd/022:20:120
14851999767,20cyclictest14-21ksoftirqd/019:55:110
157042950,6chrt15703-21sed23:45:010
14851999366,17cyclictest14-21ksoftirqd/020:50:110
14851999366,17cyclictest14-21ksoftirqd/020:50:110
14851999359,23cyclictest14-21ksoftirqd/019:10:210
14851999212,67cyclictest0-21swapper/021:35:140
14851999063,16cyclictest14-21ksoftirqd/019:35:120
14851999059,18cyclictest14-21ksoftirqd/019:40:110
14851999058,19cyclictest14-21ksoftirqd/022:30:150
14851998964,16cyclictest0-21swapper/021:30:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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