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2026-05-28 - 08:06
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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 Thu May 28, 2026 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
392629734,46sleep00-21swapper/019:05:150
5628999525,64cyclictest0-21swapper/100:00:131
5624999053,20cyclictest14-21ksoftirqd/021:05:120
5624998950,22cyclictest14-21ksoftirqd/022:20:120
5624998851,20cyclictest14-21ksoftirqd/023:05:140
5628998664,11cyclictest26-21ksoftirqd/100:15:121
5628998452,19cyclictest26-21ksoftirqd/119:55:121
5624998455,19cyclictest14-21ksoftirqd/022:05:130
5628998354,16cyclictest26-21ksoftirqd/121:10:121
5628997849,18cyclictest26-21ksoftirqd/119:45:111
5624997812,49cyclictest0-21swapper/019:25:120
5628997747,17cyclictest26-21ksoftirqd/123:45:131
531627618,45sleep10-21swapper/119:08:351
5628997548,16cyclictest26-21ksoftirqd/123:55:131
5628997546,18cyclictest26-21ksoftirqd/120:00:131
5628997443,23cyclictest18232-21cat21:15:191
5628997443,23cyclictest18232-21cat21:15:191
5628997144,21cyclictest26-21ksoftirqd/100:20:141
5624997128,35cyclictest27338-21aten2.4-expect20:10:160
5628997027,39cyclictest26-21ksoftirqd/122:40:371
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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