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2026-07-20 - 08:52
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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 Jul 20, 2026 00:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1193121470,5chrt0-21swapper/119:20:011
76509912064,12cyclictest14-21ksoftirqd/022:45:120
76509911414,92cyclictest0-21swapper/019:50:120
76509910649,18cyclictest0-21swapper/022:30:140
7296210318,40sleep00-21swapper/019:08:150
7650999814,18cyclictest0-21swapper/019:20:150
7650999611,36cyclictest9-1kworker/0:1H00:00:150
765099955,40cyclictest0-21swapper/020:10:140
7650999363,19cyclictest0-21swapper/019:55:150
7650999265,14cyclictest0-21swapper/000:20:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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