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2026-04-22 - 07:56
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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 20 highest latencies:
System rackcslot6.osadl.org (updated Wed Apr 22, 2026 00:46:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
278575123910,12sleep0101ksoftirqd/019:05:130
278842699382380,1cyclictest60471-21kworker/7:019:39:027
278840399382380,1cyclictest2804253-21kworker/4:020:21:034
2788403993820,381cyclictest2804253-21kworker/4:019:39:024
2788426993810,380cyclictest0-21swapper/723:48:037
2788426993810,1cyclictest0-21swapper/723:44:027
2788403993810,380cyclictest2989693-21kworker/4:223:06:034
2788403993810,380cyclictest0-21swapper/421:11:024
2788403993810,380cyclictest0-21swapper/420:50:024
278838999381380,1cyclictest2852375-21kworker/2:121:02:032
2788389993810,380cyclictest0-21swapper/221:08:032
2788389993810,380cyclictest0-21swapper/220:04:032
2788389993810,380cyclictest0-21swapper/219:52:022
278842699380378,2cyclictest2959597-21kworker/7:123:13:027
278842699380378,1cyclictest60471-21kworker/7:019:49:027
2788426993800,1cyclictest0-21swapper/721:46:027
278840399380379,1cyclictest2804253-21kworker/4:020:31:024
2788403993800,379cyclictest0-21swapper/420:25:034
2788403993800,0cyclictest0-21swapper/400:24:024
278838999380379,1cyclictest2746421-21kworker/2:220:06:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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