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2026-01-03 - 18:57
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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 rackeslot5.osadl.org (updated Sat Jan 03, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5618993027,2cyclictest10209-21sh07:20:012
562399290,28cyclictest0-21swapper/309:30:123
561899290,28cyclictest0-21swapper/210:55:122
561399290,28cyclictest15142-21apt-get07:30:111
560899290,28cyclictest0-21swapper/007:50:130
5623992827,1cyclictest635-21rs:main3
5623992827,1cyclictest10863-21perf08:29:593
562399280,28cyclictest0-21swapper/311:25:123
562399280,28cyclictest0-21swapper/307:35:143
562399280,28cyclictest0-21swapper/307:35:143
5618992828,0cyclictest26937-21apt-get07:55:132
561899280,28cyclictest0-21swapper/207:10:132
561899280,0cyclictest0-21swapper/209:40:102
5613992828,0cyclictest0-21swapper/108:05:121
561399280,0cyclictest17467-21apt-get07:35:141
561399280,0cyclictest17467-21apt-get07:35:141
5608992828,0cyclictest0-21swapper/009:10:160
5608992827,1cyclictest0-21swapper/011:00:010
5608992827,0cyclictest0-21swapper/008:05:120
560899280,28cyclictest0-21swapper/010:15:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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