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2026-05-08 - 14:55
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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 May 08, 2026 12:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25713997946,10cyclictest26-21ksoftirqd/108:05:121
2554227920,51sleep00-21swapper/007:09:460
2571399767,13cyclictest26-21ksoftirqd/107:38:241
317992740,10sleep126-21ksoftirqd/111:55:101
25713997445,11cyclictest26-21ksoftirqd/110:45:111
25708997315,51cyclictest0-21swapper/007:10:100
2429327233,26sleep10-21swapper/107:05:171
25708997038,17cyclictest14-21ksoftirqd/008:15:100
2571399685,43cyclictest26-21ksoftirqd/107:50:101
25708996834,24cyclictest13959-21apt-get11:05:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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