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2025-12-16 - 08:30
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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
Characteristics of the 20 highest latencies:
System rack6slot6 (updated Tue Dec 16, 2025 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
296269910758153458,54033cyclictest4014-21kworker/u2:121:21:070
296269910695653435,53430cyclictest0-21swapper19:16:110
296269910683653394,53379cyclictest134850irq/9-eth021:40:030
296269910683153387,53354cyclictest6231-21kworker/0:221:13:250
296269910676153443,53318cyclictest0-21swapper21:58:580
296269910672953446,53283cyclictest0-21swapper22:07:310
296269910672053471,53249cyclictest0-21swapper23:52:010
296269910667453437,53147cyclictest9-21ksoftirqd/020:50:290
296269910666853493,53082cyclictest0-21swapper19:49:410
296269910658753441,53146cyclictest0-21swapper21:01:320
296269910656853503,53065cyclictest0-21swapper19:41:490
296269910655553468,53087cyclictest0-21swapper19:31:560
296269910654753402,53145cyclictest0-21swapper20:29:220
296269910654153404,53137cyclictest0-21swapper22:57:050
296269910653253487,53045cyclictest0-21swapper19:12:400
296269910651653476,53040cyclictest0-21swapper22:43:110
296269910651253475,53037cyclictest0-21swapper22:50:130
296269910650753476,53031cyclictest0-21swapper00:03:540
296269910650353394,53109cyclictest0-21swapper22:48:220
296269910648053460,53020cyclictest0-21swapper23:39:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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