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2025-12-27 - 01:16
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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 10 highest latencies:
System rack0slot2.osadl.org (updated Sat Dec 27, 2025 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38794632910,1sleep60-21swapper/600:04:016
38794632910,1sleep60-21swapper/600:04:016
330472725443,8sleep40-21swapper/419:05:224
330171724731,11sleep50-21swapper/519:04:265
3305288994236,5cyclictest3550461-21latency_hist21:14:027
330474724117,8sleep60-21swapper/619:05:406
3305288993933,5cyclictest3850296-21latency_hist23:49:017
32969492392,31sleep70-21swapper/719:04:207
3305282993734,2cyclictest3357422-21kworker/u16:1+events_unbound19:34:045
3305282993532,2cyclictest3357422-21kworker/u16:1+events_unbound19:44:045
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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