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2026-08-08 - 13:11
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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 Sat Aug 08, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
288139911561,44cyclictest0-21swapper/023:55:220
288139911233,72cyclictest4628-21apt-get22:35:100
288139910312,24cyclictest0-21swapper/019:10:120
288139910223,30cyclictest14-21ksoftirqd/020:00:110
288139910212,26cyclictest0-21swapper/023:50:110
28819991017,73cyclictest0-21swapper/120:10:121
288139910115,27cyclictest0-21swapper/022:18:440
288139910112,27cyclictest0-21swapper/022:45:120
288139910112,25cyclictest0-21swapper/020:35:140
288139910015,24cyclictest0-21swapper/000:30:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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