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2025-08-21 - 21:29
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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 Thu Aug 21, 2025 12:45:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2180721090,5chrt21805-21ls12:25:011
639399967,78cyclictest24963-21apt-get08:00:160
6393999570,12cyclictest14-21ksoftirqd/007:40:170
6393999416,70cyclictest0-21swapper/010:45:120
6393999169,10cyclictest14-21ksoftirqd/009:50:170
6393999064,15cyclictest0-21swapper/009:55:120
6393998664,13cyclictest14-21ksoftirqd/011:10:120
6393998656,19cyclictest14-21ksoftirqd/009:25:150
6393998656,19cyclictest14-21ksoftirqd/009:25:150
6393998655,21cyclictest0-21swapper/010:20:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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