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2025-12-26 - 19:59
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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 Fri Dec 26, 2025 12:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5228999125,17cyclictest14-21ksoftirqd/009:30:130
5231998456,18cyclictest26-21ksoftirqd/107:30:131
5231998455,16cyclictest26-21ksoftirqd/107:55:151
5231998354,16cyclictest26-21ksoftirqd/110:50:141
522899826,66cyclictest9380-21apt-get07:20:140
5231998153,15cyclictest26-21ksoftirqd/108:10:141
5231998152,20cyclictest26-21ksoftirqd/111:35:161
5231998152,20cyclictest26-21ksoftirqd/111:35:151
5228998145,19cyclictest14-21ksoftirqd/010:00:370
5231998055,15cyclictest26-21ksoftirqd/111:25:161
522899795,18cyclictest20404-21apt-get12:25:160
522899782,43cyclictest19036-21munin-run10:50:010
5231997754,14cyclictest26-21ksoftirqd/111:05:231
522899778,54cyclictest0-21swapper/009:10:120
5228997743,17cyclictest14-21ksoftirqd/007:19:550
5231997651,14cyclictest26-21ksoftirqd/112:35:111
5231997651,14cyclictest26-21ksoftirqd/112:35:101
5228997644,18cyclictest14-21ksoftirqd/010:55:150
5228997627,14cyclictest14-21ksoftirqd/007:36:090
5231997552,16cyclictest26-21ksoftirqd/111:40:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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