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2025-11-25 - 01:14
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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 Mon Nov 24, 2025 12:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
144349911281,15cyclictest14-21ksoftirqd/009:55:150
144349911078,21cyclictest14-21ksoftirqd/007:25:150
144349910981,15cyclictest14-21ksoftirqd/007:20:100
144349910869,29cyclictest14-21ksoftirqd/010:55:110
14143210819,38sleep00-21swapper/007:08:520
144349910470,19cyclictest0-21swapper/008:30:150
144349910173,18cyclictest14-21ksoftirqd/011:50:160
144349910071,16cyclictest14-21ksoftirqd/008:50:120
144349910071,16cyclictest14-21ksoftirqd/007:15:140
144349910067,21cyclictest14-21ksoftirqd/009:20:130
14434999972,16cyclictest14-21ksoftirqd/008:25:150
14434999869,20cyclictest14-21ksoftirqd/008:55:220
14434999869,19cyclictest14-21ksoftirqd/010:10:160
14434999669,14cyclictest14-21ksoftirqd/007:50:120
14434999667,15cyclictest14-21ksoftirqd/012:30:120
14434999566,19cyclictest14-21ksoftirqd/007:55:160
14434999566,19cyclictest14-21ksoftirqd/007:35:130
14434999561,21cyclictest14-21ksoftirqd/010:35:120
14434999368,17cyclictest14-21ksoftirqd/011:55:130
14434999367,16cyclictest14-21ksoftirqd/008:05:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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