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2026-04-15 - 07:57
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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 rackeslot3.osadl.org (updated Wed Apr 15, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1901596996866,1cyclictest0-21swapper/122:35:101
1901596996461,2cyclictest0-21swapper/123:59:361
190159699620,61cyclictest0-21swapper/119:44:391
1901596996146,14cyclictest1960988-21kworker/1:321:35:151
1901596995942,16cyclictest2086089-21kworker/1:000:09:591
1901596995942,16cyclictest2040726-21kworker/1:223:15:151
1901596995942,15cyclictest1358121-1kworker/1:1H22:20:141
1901596995941,17cyclictest2054195-21kworker/1:223:35:021
1901596995941,17cyclictest1985443-21kworker/1:322:10:111
1901596995938,19cyclictest1358121-1kworker/1:1H19:40:001
1901596995843,14cyclictest2049623-21kworker/1:023:30:001
1901596995842,15cyclictest2023504-21kworker/1:022:52:181
1901596995842,15cyclictest1927168-21kworker/1:120:35:431
1901596995842,15cyclictest1908132-21kworker/1:019:32:451
1901596995842,15cyclictest1358121-1kworker/1:1H23:41:091
1901596995828,16cyclictest1913367-21kworker/1:319:55:131
1901592995853,3cyclictest3989358-1kworker/0:0H21:10:000
1901596995742,14cyclictest2086089-21kworker/1:000:15:011
1901596995742,14cyclictest1960988-21kworker/1:321:50:531
1901596995742,14cyclictest1930249-21kworker/1:220:45:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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