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2026-06-04 - 09:47
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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 Jun 04, 2026 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
229429912297,11cyclictest14-21ksoftirqd/019:10:120
229429910778,16cyclictest14-21ksoftirqd/021:10:090
229429910677,18cyclictest14-21ksoftirqd/023:50:130
22447210619,39sleep00-21swapper/019:06:380
229429910479,14cyclictest14-21ksoftirqd/020:20:090
229429910477,15cyclictest14-21ksoftirqd/022:20:140
229429910477,15cyclictest14-21ksoftirqd/022:20:140
229429910372,20cyclictest14-21ksoftirqd/022:10:130
229429910273,16cyclictest14-21ksoftirqd/022:05:130
229429910272,19cyclictest14-21ksoftirqd/021:35:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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