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2025-11-27 - 06:32
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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 Thu Nov 27, 2025 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
311019910703053457,53452cyclictest23248-21ssh23:44:260
311019910681953426,53302cyclictest18266-21kworker/0:021:21:250
311019910673553422,53313cyclictest0-21swapper21:02:190
311019910662253447,53175cyclictest0-21swapper21:07:010
311019910660753464,53020cyclictest716-21ssh23:57:500
311019910658153418,53163cyclictest0-21swapper21:25:560
311019910655753393,53100cyclictest0-21swapper23:36:140
311019910652253438,53084cyclictest0-21swapper21:55:250
311019910651753450,53067cyclictest0-21swapper20:31:100
311019910649753470,53027cyclictest0-21swapper22:08:280
311019910647053457,53013cyclictest0-21swapper23:14:580
311019910646153430,53031cyclictest0-21swapper22:16:010
311019910645453446,53008cyclictest0-21swapper00:12:540
311019910644753401,53046cyclictest0-21swapper22:38:370
311019910643253438,52994cyclictest0-21swapper22:40:480
311019910641753430,52987cyclictest0-21swapper20:21:380
311019910641153425,52986cyclictest0-21swapper20:01:320
311019910640253420,52982cyclictest0-21swapper21:39:400
311019910633653438,52806cyclictest0-21swapper22:50:510
311019910627953395,52819cyclictest0-21swapper00:04:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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