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2026-07-03 - 11:23
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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 Fri Jul 03, 2026 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
703329637,42sleep00-21swapper/019:05:200
842699936,48cyclictest21602-21apt-get19:45:240
709128738,35sleep10-21swapper/119:05:211
8431998636,44cyclictest270-21systemd-udevd21:14:201
843199859,60cyclictest0-21swapper/121:40:131
842699852,76cyclictest30689-21cat20:10:170
842699846,65cyclictest0-21swapper/000:15:130
843199839,62cyclictest0-21swapper/120:05:131
843199839,59cyclictest0-21swapper/123:35:131
842699838,61cyclictest0-21swapper/021:35:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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