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2025-09-18 - 10:46
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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 rack0slot7.osadl.org (updated Thu Sep 18, 2025 00:46:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1205445994061,405cyclictest0-21swapper/419:15:5210
1205445994061,405cyclictest0-21swapper/419:15:5110
120543099391388,3cyclictest0-21swapper/019:16:250
120543099391388,3cyclictest0-21swapper/019:16:250
120547999378377,0cyclictest0-21swapper/1419:16:256
120547999378377,0cyclictest0-21swapper/1419:16:246
120547199372370,2cyclictest1222625-21kworker/12:1+events19:15:524
120547199372370,2cyclictest1222625-21kworker/12:1+events19:15:514
120545599336334,2cyclictest0-21swapper/719:14:5313
120548199302301,0cyclictest0-21swapper/1519:16:257
120548199302301,0cyclictest0-21swapper/1519:16:257
120543099288278,9cyclictest836439-21Renderer19:14:570
120545999280277,2cyclictest1131365-21kworker/8:0+events19:16:2514
120545999280277,2cyclictest1131365-21kworker/8:0+events19:16:2514
120546599276276,0cyclictest0-21swapper/1019:14:442
120545999270269,1cyclictest0-21swapper/819:14:5814
120547999267266,0cyclictest0-21swapper/1419:14:566
120548199257257,0cyclictest0-21swapper/1519:14:567
120544899237233,3cyclictest1151075-21kworker/5:1+events19:16:0211
120544899237233,3cyclictest1151075-21kworker/5:1+events19:16:0111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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