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2025-12-12 - 07:25
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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
Characteristics of the 20 highest latencies:
System rack7slot1.osadl.org (updated Fri Dec 12, 2025 00:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
783212358,59sleep30-21swapper/319:08:563
513211151,55sleep00-21swapper/019:05:400
762210951,20sleep20-21swapper/219:08:402
714210353,45sleep10-21swapper/119:08:051
317632600,1sleep222465-21stress22:44:462
999994217,22cyclictest0-21swapper/023:05:360
999994217,22cyclictest0-21swapper/023:05:360
999994015,22cyclictest0-21swapper/022:55:020
999993919,17cyclictest0-21swapper/021:20:020
999993918,18cyclictest0-21swapper/000:25:000
999993916,20cyclictest0-21swapper/021:10:250
999993915,17cyclictest0-21swapper/021:44:180
999993818,17cyclictest0-21swapper/000:25:220
999993817,19cyclictest0-21swapper/023:15:260
999993816,19cyclictest0-21swapper/000:05:220
999993815,21cyclictest0-21swapper/000:15:190
999993815,21cyclictest0-21swapper/000:15:180
999993814,21cyclictest0-21swapper/021:25:000
999993814,21cyclictest0-21swapper/021:25:000
999993813,22cyclictest0-21swapper/021:55:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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