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2026-09-06 - 09:08
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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 Sun Sep 06, 2026 00:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1673529731,54sleep10-21swapper/119:06:311
17249999660,20cyclictest26-21ksoftirqd/121:10:141
17244998966,11cyclictest14-21ksoftirqd/023:45:110
17244998670,10cyclictest14-21ksoftirqd/023:55:130
33052850,13chrt3308-21needreboot21:30:311
17244998557,15cyclictest14-21ksoftirqd/023:05:130
17244998262,11cyclictest14-21ksoftirqd/022:50:190
17244998254,18cyclictest14-21ksoftirqd/022:20:120
17244998253,17cyclictest0-21swapper/022:40:150
17244998251,15cyclictest14-21ksoftirqd/021:55:130
17244998151,18cyclictest14-21ksoftirqd/020:40:150
17244998151,16cyclictest14-21ksoftirqd/023:35:110
17244998048,21cyclictest14-21ksoftirqd/021:35:260
17244997956,13cyclictest14-21ksoftirqd/000:25:140
17244997952,17cyclictest14-21ksoftirqd/000:00:140
17244997950,17cyclictest14-21ksoftirqd/020:05:110
17244997850,15cyclictest14-21ksoftirqd/022:25:240
17244997754,12cyclictest14-21ksoftirqd/021:50:170
17244997754,12cyclictest14-21ksoftirqd/021:50:170
1679127618,48sleep00-21swapper/019:07:070
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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