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2026-05-16 - 03:10
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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 Sat May 16, 2026 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
86259911793,12cyclictest26-21ksoftirqd/121:45:121
86219911164,32cyclictest14-21ksoftirqd/021:10:150
7274211135,62sleep00-21swapper/019:05:210
86259911082,17cyclictest26-21ksoftirqd/119:15:151
8621991089,22cyclictest0-21swapper/021:55:120
86219910561,30cyclictest14-21ksoftirqd/023:15:120
86259910476,18cyclictest26-21ksoftirqd/121:55:131
86259910373,20cyclictest26-21ksoftirqd/123:10:111
86219910211,21cyclictest0-21swapper/023:30:140
86259910169,22cyclictest26-21ksoftirqd/119:40:121
8621991016,75cyclictest0-21swapper/022:40:140
86259910072,18cyclictest26-21ksoftirqd/123:25:131
86259910070,18cyclictest26-21ksoftirqd/123:45:111
8625999965,17cyclictest26-21ksoftirqd/100:25:131
827029918,38sleep10-21swapper/119:08:141
8625999765,20cyclictest26-21ksoftirqd/119:35:111
8621999512,64cyclictest0-21swapper/021:50:110
8625999465,20cyclictest26-21ksoftirqd/100:20:121
8621999339,32cyclictest0-21swapper/019:40:110
8625999259,20cyclictest26-21ksoftirqd/120:25:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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