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2026-04-03 - 04:35
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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 Fri Apr 03, 2026 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23168991239,94cyclictest0-21swapper/022:05:120
23168991178,87cyclictest0-21swapper/020:35:110
231689910811,78cyclictest0-21swapper/000:00:130
23168991057,77cyclictest0-21swapper/020:20:140
231689910185,11cyclictest14-21ksoftirqd/000:09:010
231689910185,11cyclictest14-21ksoftirqd/000:09:010
2316899986,20cyclictest0-21swapper/023:00:110
2294929814,37sleep00-21swapper/019:09:060
2261529618,33sleep10-21swapper/119:06:021
2316899899,61cyclictest0-21swapper/021:05:240
23168998611,55cyclictest0-21swapper/022:10:120
23169998417,53cyclictest0-21swapper/123:45:241
23169998314,55cyclictest0-21swapper/120:50:101
2316899838,55cyclictest0-21swapper/023:50:110
23168998314,47cyclictest0-21swapper/022:45:120
2316999827,20cyclictest26173-21apt-get23:50:131
2316899827,55cyclictest0-21swapper/019:30:100
2316999817,20cyclictest16486-21apt-get20:20:121
2316999809,21cyclictest6571-21apt-get22:55:131
23169998022,20cyclictest457-21dbus-daemon20:31:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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