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2026-03-29 - 14:54
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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 rack1slot3.osadl.org (updated Sun Mar 29, 2026 12:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2783232991513,1cyclictest0-21swapper/308:35:133
278323299150,13cyclictest0-21swapper/308:00:133
2783232991311,1cyclictest0-21swapper/310:10:123
2783232991310,1cyclictest0-21swapper/308:40:123
278323299120,1cyclictest0-21swapper/310:35:123
278323299120,1cyclictest0-21swapper/309:35:143
278323299120,11cyclictest0-21swapper/312:20:003
278323299120,11cyclictest0-21swapper/311:30:143
278323299120,11cyclictest0-21swapper/308:25:013
278323299120,0cyclictest0-21swapper/311:00:133
278323299120,0cyclictest0-21swapper/307:20:113
2783232991111,0cyclictest0-21swapper/308:25:173
2783232991110,0cyclictest0-21swapper/312:05:133
2783232991110,0cyclictest0-21swapper/309:40:133
2783232991110,0cyclictest0-21swapper/309:20:003
2783232991110,0cyclictest0-21swapper/307:50:013
278323299110,9cyclictest0-21swapper/310:00:173
278323299110,1cyclictest0-21swapper/310:50:013
278323299110,11cyclictest0-21swapper/310:10:013
278323299110,10cyclictest0-21swapper/312:35:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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