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2025-12-07 - 11:10
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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 Sun Dec 07, 2025 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
237329910761253463,54050cyclictest3728-21ssh23:56:280
237329910697253434,53446cyclictest0-21swapper21:40:090
237329910680353379,53335cyclictest5350irq/9-uhci_hcd:00:13:030
237329910675153413,53247cyclictest0-21swapper19:27:510
237329910673153465,53177cyclictest9-21ksoftirqd/019:54:580
237329910668253471,53122cyclictest9-21ksoftirqd/021:18:120
237329910663353423,53210cyclictest0-21swapper22:46:380
237329910658453389,53104cyclictest0-21swapper23:01:520
237329910655453425,53129cyclictest0-21swapper23:24:490
237329910649853474,53024cyclictest0-21swapper22:08:470
237329910649253469,53023cyclictest0-21swapper21:00:370
237329910647753474,53003cyclictest0-21swapper22:54:500
237329910647253469,53003cyclictest0-21swapper21:14:110
237329910647053422,52984cyclictest9-21ksoftirqd/022:56:510
237329910646853461,53007cyclictest0-21swapper23:29:300
237329910646253408,53054cyclictest0-21swapper23:42:240
237329910644353442,53001cyclictest0-21swapper23:19:470
237329910644253399,53043cyclictest0-21swapper23:06:230
237329910642353458,52965cyclictest0-21swapper19:16:370
237329910638653464,52858cyclictest9-21ksoftirqd/019:57:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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