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2025-12-03 - 15:54
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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 Wed Dec 03, 2025 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
225429910722253481,53617cyclictest11179-21ssh00:14:540
225429910716953395,53679cyclictest16425-21ssh23:36:330
225429910669753458,53173cyclictest0-21swapper20:03:410
225429910665753415,53176cyclictest0-21swapper20:44:330
225429910657153459,53112cyclictest0-21swapper21:00:580
225429910656053476,53084cyclictest0-21swapper21:38:190
225429910654253399,53143cyclictest0-21swapper20:38:010
225429910653653441,53095cyclictest0-21swapper22:14:390
225429910647453459,53015cyclictest0-21swapper22:56:310
225429910646053445,53015cyclictest0-21swapper19:48:370
225429910643953398,53041cyclictest0-21swapper22:31:240
225429910642353435,52988cyclictest0-21swapper22:16:300
225429910642253391,53031cyclictest0-21swapper20:22:370
225429910631953430,52824cyclictest9-21ksoftirqd/020:07:330
225429910627353394,52814cyclictest0-21swapper23:25:100
225429910626653393,52808cyclictest0-21swapper19:31:520
225429910622553476,52749cyclictest0-21swapper21:08:000
225429910622453479,52745cyclictest0-21swapper23:19:280
225429910618653415,52771cyclictest0-21swapper20:34:500
225429910617353409,52764cyclictest0-21swapper19:22:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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