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2025-11-27 - 10:50
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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 rack1slot8.osadl.org (updated Thu Nov 27, 2025 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23082676653,16sleep00-21swapper/019:07:360
258199473393,49cyclictest0-21swapper/119:24:021
258099439357,52cyclictest0-21swapper/019:24:020
258199398319,48cyclictest0-21swapper/119:10:031
258099361281,50cyclictest0-21swapper/019:10:030
2580991029,31cyclictest0-21swapper/022:52:590
2580999513,76cyclictest0-21swapper/023:17:590
216899940,11rtkit-daemon0-21swapper/123:27:171
258099885,64cyclictest0-21swapper/021:49:590
216899840,4rtkit-daemon11539-21kworker/0:121:24:040
191072820,4sleep019106-21cpu19:55:150
258099808,53cyclictest0-21swapper/023:08:000
258199786,16cyclictest0-21swapper/122:23:511
258199776,29cyclictest0-21swapper/119:15:101
258199776,17cyclictest0-21swapper/121:17:451
258199776,16cyclictest0-21swapper/121:40:231
258199775,17cyclictest0-21swapper/121:11:421
209552770,2sleep0221rcuc/022:20:390
258199766,17cyclictest0-21swapper/122:46:561
258199765,17cyclictest0-21swapper/123:15:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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