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2026-01-07 - 10:00
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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 Wed Jan 07, 2026 00:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1961210517,40sleep00-21swapper/019:09:490
151729736,48sleep10-21swapper/119:05:341
66772920,6sleep16670-21munin-run22:25:011
2121998943,11cyclictest14-21ksoftirqd/023:30:130
2129997941,24cyclictest26-21ksoftirqd/121:00:131
2121997553,14cyclictest0-21swapper/019:15:110
2121997542,23cyclictest19421-21apt-get23:00:130
2121997530,40cyclictest2115-21cyclictest21:25:110
2121997439,28cyclictest0-21swapper/000:00:110
2121997438,26cyclictest0-21swapper/020:50:110
2121997438,23cyclictest0-21swapper/019:10:130
2121997422,46cyclictest250-21systemd-journal23:57:000
2121997422,46cyclictest250-21systemd-journal23:56:590
2121997315,51cyclictest0-21swapper/022:45:130
2121997315,16cyclictest0-21swapper/019:30:120
2121997237,27cyclictest0-21swapper/022:35:120
2121997237,22cyclictest0-21swapper/022:25:150
2121997237,22cyclictest0-21swapper/022:25:150
2121997143,14cyclictest0-21swapper/021:30:130
2121997138,18cyclictest0-21swapper/019:45:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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