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2026-10-10 - 22:36
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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 Sat Oct 10, 2026 12:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
105908899138,1cyclictest0-21swapper/310:40:133
105908899130,11cyclictest0-21swapper/307:40:123
1059088991211,0cyclictest0-21swapper/312:05:113
1059088991210,1cyclictest0-21swapper/310:30:113
105908899120,11cyclictest0-21swapper/311:40:133
105908899120,11cyclictest0-21swapper/310:45:203
105908899120,11cyclictest0-21swapper/309:30:013
105908899120,11cyclictest0-21swapper/307:30:203
1059088991111,0cyclictest0-21swapper/311:24:553
1059088991111,0cyclictest0-21swapper/310:00:123
1059088991111,0cyclictest0-21swapper/310:00:123
1059088991111,0cyclictest0-21swapper/308:35:123
105908899110,11cyclictest0-21swapper/308:12:233
105908899110,10cyclictest0-21swapper/309:20:123
105908899110,10cyclictest0-21swapper/307:36:193
105908899110,0cyclictest0-21swapper/310:55:133
105908899110,0cyclictest0-21swapper/309:35:153
105908899110,0cyclictest0-21swapper/309:30:123
105908899110,0cyclictest0-21swapper/308:00:003
1059088991010,0cyclictest0-21swapper/312:15:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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