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2026-03-10 - 18:45
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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 Tue Mar 10, 2026 12:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
111339910874,20cyclictest14-21ksoftirqd/008:25:160
111339910874,20cyclictest14-21ksoftirqd/008:25:150
1556921040,5sleep10-21swapper/107:20:181
10741210422,37sleep00-21swapper/007:07:450
11133999969,17cyclictest14-21ksoftirqd/009:15:120
11133999865,20cyclictest0-21swapper/011:20:150
11133999668,18cyclictest14-21ksoftirqd/010:10:140
11133999566,17cyclictest14-21ksoftirqd/007:45:140
11133999566,16cyclictest0-21swapper/011:45:130
11133999565,18cyclictest0-21swapper/011:55:100
11133999366,17cyclictest14-21ksoftirqd/010:25:140
11133999365,19cyclictest14-21ksoftirqd/011:30:110
11133999361,20cyclictest14-21ksoftirqd/008:15:140
11133999262,19cyclictest14-21ksoftirqd/011:15:130
11133999158,21cyclictest14-21ksoftirqd/008:30:120
11135998918,31cyclictest26-21ksoftirqd/111:10:121
11133998960,17cyclictest14-21ksoftirqd/010:15:100
11133998959,19cyclictest14-21ksoftirqd/009:35:130
1068028934,44sleep10-21swapper/107:07:061
11133998862,15cyclictest14-21ksoftirqd/009:30:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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