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2026-05-20 - 03:52
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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 Wed May 20, 2026 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7904211933,30sleep10-21swapper/119:09:171
8110998736,46cyclictest26-21ksoftirqd/120:45:121
8110998031,43cyclictest26-21ksoftirqd/120:43:161
8103997859,13cyclictest14-21ksoftirqd/020:40:130
810399776,62cyclictest15142-21apt-get21:00:120
8103997658,11cyclictest14-21ksoftirqd/020:50:130
782827618,48sleep00-21swapper/019:09:000
8103997415,53cyclictest0-21swapper/019:45:140
8103997114,15cyclictest0-21swapper/023:35:230
8103997039,16cyclictest14-21ksoftirqd/021:50:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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