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2026-05-25 - 03:46
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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 Mon May 25, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
338769993027,1cyclictest0-21swapper/300:35:173
338769992522,1cyclictest0-21swapper/320:25:013
33876999251,9cyclictest449486-21turbostat20:35:013
338769992421,1cyclictest0-21swapper/322:00:193
338769992219,1cyclictest0-21swapper/319:40:013
33876999221,11cyclictest619799-21taskset22:30:013
338769992119,1cyclictest0-21swapper/321:20:013
338769992118,1cyclictest0-21swapper/323:40:053
338769992118,1cyclictest0-21swapper/323:20:033
338769992118,1cyclictest0-21swapper/323:00:283
338769992118,1cyclictest0-21swapper/321:35:003
338769992017,1cyclictest0-21swapper/320:25:163
338769992017,1cyclictest0-21swapper/320:10:193
33876999201,15cyclictest494519-21taskset21:10:103
33876999198,7cyclictest7206302sleep323:32:523
338769991916,1cyclictest0-21swapper/322:45:003
338769991916,1cyclictest0-21swapper/321:40:063
338769991916,1cyclictest0-21swapper/321:40:013
338769991916,1cyclictest0-21swapper/321:40:003
33876999191,14cyclictest759773-21chrt23:57:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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