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2026-01-12 - 03:23
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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 Jan 12, 2026 00:45:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12928998715,57cyclictest0-21swapper/119:40:121
1292899854,75cyclictest4974-21python320:15:321
12928998413,56cyclictest0-21swapper/123:45:111
12928998358,12cyclictest26-21ksoftirqd/123:20:141
12928998316,55cyclictest0-21swapper/121:45:131
12928998316,55cyclictest0-21swapper/121:45:121
12928998315,56cyclictest0-21swapper/121:40:131
12928998214,53cyclictest0-21swapper/119:55:131
1292899817,62cyclictest9672-21apt-get20:30:121
1292899817,61cyclictest20508-21apt-get21:00:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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