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2026-07-29 - 05:53
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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 Jul 29, 2026 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1882321380,5chrt18826-21sed00:20:371
3386998634,46cyclictest0-21swapper/021:25:130
200828441,26sleep10-21swapper/119:05:181
3386998259,12cyclictest14-21ksoftirqd/019:45:140
3386998158,12cyclictest14-21ksoftirqd/022:05:140
3386998155,13cyclictest14-21ksoftirqd/020:30:130
318627921,48sleep00-21swapper/019:09:170
3386997713,20cyclictest0-21swapper/021:40:130
3388997643,18cyclictest26-21ksoftirqd/122:50:241
3386997654,12cyclictest14-21ksoftirqd/000:35:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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