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2026-03-17 - 10:45
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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 rack4slot6.osadl.org (updated Tue Mar 17, 2026 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14891521170,113pltrace0-21swapper/319:05:123
14891521130,100pltrace0-21swapper/619:06:546
14891521100,106pltrace0-21swapper/719:06:327
14891521050,97pltrace0-21swapper/519:07:045
1489152940,76pltrace0-21swapper/119:07:421
1489152770,72pltrace0-21swapper/219:06:562
1715426141,15sleep00-21swapper/019:05:220
1777425844,10sleep40-21swapper/419:09:424
2355152420,5pltrace0-21swapper/721:13:327
3191152280,1pltrace1283-21pltrace-run21:28:211
1127052230,6pltrace0-21swapper/719:56:327
569552200,0pltrace0-21swapper/719:43:557
2633952190,3pltrace0-21swapper/721:20:177
723552180,2pltrace54-21ksoftirqd/423:39:084
3191152180,0pltrace0-21swapper/721:30:117
2244752180,0pltrace0-21swapper/720:15:597
1730652180,2pltrace0-21swapper/723:00:117
165752180,0pltrace0-21swapper/723:29:097
3081252170,0pltrace0-21swapper/720:30:577
3020152170,1pltrace0-21swapper/722:25:257
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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