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2025-12-21 - 19:22
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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 Dec 21, 2025 12:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13964212132,30sleep10-21swapper/107:05:031
159189910614,76cyclictest0-21swapper/010:45:230
159189910613,81cyclictest0-21swapper/011:20:140
159189910573,20cyclictest14-21ksoftirqd/009:45:150
159189910534,36cyclictest6272-21kworker/0:109:50:120
159189910513,78cyclictest0-21swapper/011:55:120
159189910312,78cyclictest0-21swapper/009:40:110
159189910312,78cyclictest0-21swapper/009:05:190
159229910264,28cyclictest26-21ksoftirqd/111:00:121
159189910268,21cyclictest14-21ksoftirqd/010:25:240
159189910262,27cyclictest14-21ksoftirqd/008:00:130
159189910211,81cyclictest500-21snmpd08:15:130
159189910013,74cyclictest0-21swapper/009:30:150
15918999913,74cyclictest0-21swapper/012:20:120
15918999910,77cyclictest13750-21apt-get10:05:180
15918999863,23cyclictest14-21ksoftirqd/007:30:150
15918999814,72cyclictest0-21swapper/012:00:240
15918999813,74cyclictest0-21swapper/009:15:150
15918999712,75cyclictest0-21swapper/009:25:120
15918999712,75cyclictest0-21swapper/009:25:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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