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2026-03-10 - 13:58
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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 Tue Mar 10, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1649380992321,1cyclictest0-21swapper/319:10:263
1649380992320,1cyclictest0-21swapper/320:00:223
1649380992319,1cyclictest0-21swapper/323:10:013
1649380992219,1cyclictest0-21swapper/321:30:013
1649380992017,1cyclictest0-21swapper/321:15:183
164938099192,13cyclictest1882700-21taskset22:10:123
1649380991815,1cyclictest0-21swapper/323:15:163
1649380991815,1cyclictest0-21swapper/322:55:173
1649380991815,1cyclictest0-21swapper/322:55:173
1649380991814,2cyclictest1686497-21taskset19:35:163
164938099181,13cyclictest1868899-21taskset21:55:223
164938099181,12cyclictest1773695-21chrt20:45:143
164938099181,12cyclictest1773695-21chrt20:45:133
1649380991714,1cyclictest0-21swapper/323:55:173
1649380991714,1cyclictest0-21swapper/322:45:203
1649380991714,1cyclictest0-21swapper/322:00:233
1649380991714,1cyclictest0-21swapper/321:20:143
1649380991714,1cyclictest0-21swapper/319:50:193
1649380991714,1cyclictest0-21swapper/319:40:163
1649380991713,1cyclictest0-21swapper/320:55:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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