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2025-12-29 - 08:57
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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 Mon Dec 29, 2025 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
577334991510,1cyclictest0-21swapper/322:35:123
57733499140,12cyclictest0-21swapper/323:25:133
57733499130,1cyclictest0-21swapper/323:40:133
57733499130,11cyclictest0-21swapper/321:40:163
57733499130,11cyclictest0-21swapper/300:25:133
57733499120,11cyclictest623612-21chrt21:05:203
57733499120,11cyclictest0-21swapper/323:00:023
57733499120,11cyclictest0-21swapper/300:16:203
57733499118,1cyclictest0-21swapper/322:25:133
577334991110,0cyclictest0-21swapper/323:10:143
577334991110,0cyclictest0-21swapper/319:35:013
577334991110,0cyclictest0-21swapper/319:15:013
57733499110,11cyclictest0-21swapper/323:05:013
57733499110,10cyclictest0-21swapper/322:00:183
57733499110,0cyclictest0-21swapper/323:30:163
57733499110,0cyclictest0-21swapper/321:20:133
57733499109,0cyclictest0-21swapper/320:55:153
57733499109,0cyclictest0-21swapper/320:15:003
57733499109,0cyclictest0-21swapper/300:30:143
57733499108,1cyclictest0-21swapper/320:40:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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