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2026-05-25 - 13:55
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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 10 highest latencies:
System rack3slot0.osadl.org (updated Mon May 25, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
195562920,2sleep52903299cyclictest11:59:405
201262810,0sleep60-21swapper/611:57:576
2874827872,2sleep20-21swapper/207:07:152
151522710,0sleep30-21swapper/311:07:563
162762700,1sleep125-21ksoftirqd/110:56:571
266312630,1sleep30-21swapper/307:03:553
50992510,1sleep15098-21grep10:36:061
281452510,0sleep50-21swapper/511:03:095
23942500,0sleep00-21swapper/009:40:390
291192490,0sleep50-21swapper/510:55:495
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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