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2026-08-07 - 21:18
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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 rackeslot8.osadl.org (updated Fri Aug 07, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3974111993329,1cyclictest0-21swapper/308:00:003
3974111992825,1cyclictest0-21swapper/307:40:193
3974111992724,1cyclictest0-21swapper/311:15:143
3974111992724,1cyclictest0-21swapper/310:35:133
3974111992724,1cyclictest0-21swapper/308:40:173
3974111992623,1cyclictest0-21swapper/310:20:193
3974111992623,1cyclictest0-21swapper/309:20:223
3974111992522,1cyclictest0-21swapper/310:05:003
3974111992522,1cyclictest0-21swapper/309:30:243
3974111992522,1cyclictest0-21swapper/308:20:253
3974111992522,1cyclictest0-21swapper/308:00:213
3974111992418,3cyclictest125143-21sleep11:10:003
3974111992320,1cyclictest0-21swapper/312:20:243
3974111992320,1cyclictest0-21swapper/311:00:253
3974111992320,1cyclictest0-21swapper/309:50:183
3974111992219,1cyclictest0-21swapper/311:40:263
3974111992219,1cyclictest0-21swapper/310:40:203
3974111992219,1cyclictest0-21swapper/309:40:003
397411199221,16cyclictest155515-21taskset11:27:143
409753822117,2sleep04097709-21timerwakeupswit08:40:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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