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2026-08-03 - 09:42
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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 Mon Aug 03, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2940925250,16sleep014-21ksoftirqd/019:09:550
29554999913,79cyclictest0-21swapper/021:30:130
2955499883,54cyclictest3479-21seq23:56:440
2955499883,54cyclictest3479-21seq23:56:440
29554998713,58cyclictest0-21swapper/021:05:130
29554998612,58cyclictest0-21swapper/020:40:120
29559998534,44cyclictest26-21ksoftirqd/123:45:481
29554998525,48cyclictest9722-21apt-get21:15:130
29554998514,57cyclictest0-21swapper/023:40:120
29554998512,57cyclictest0-21swapper/023:35:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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