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2025-09-16 - 22:50
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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 Sep 16, 2025 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
104179910704253455,53587cyclictest9-21ksoftirqd/012:03:010
104179910702053419,53537cyclictest9-21ksoftirqd/012:14:540
104179910700653457,53459cyclictest950ksoftirqd/011:29:010
104179910692753445,53359cyclictest9-21ksoftirqd/010:18:210
104179910681653408,53318cyclictest10415-21cyclictest08:57:580
104179910670953429,53217cyclictest10415-21cyclictest08:06:130
104179910669753444,53253cyclictest0-21swapper09:59:150
104179910667053419,53161cyclictest0-21swapper07:22:200
104179910664553422,53223cyclictest0-21swapper09:44:110
104179910650453399,53105cyclictest0-21swapper08:54:160
104179910625153384,52801cyclictest0-21swapper07:37:140
104179910616053447,52713cyclictest0-21swapper07:54:090
104179910612153428,52693cyclictest0-21swapper08:17:560
104179910596853001,52965cyclictest5992-21ssh11:36:430
104179910596553303,52662cyclictest0-21swapper10:05:370
104179910582653037,52787cyclictest2795-21ssh11:32:320
104179910577653259,52513cyclictest0-21swapper10:56:220
104179910530353038,52264cyclictest0-21swapper09:01:290
104179910512853030,52096cyclictest0-21swapper10:12:290
10417995365225,53506cyclictest0-21swapper08:32:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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