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2025-11-23 - 08:32
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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 Sun Nov 23, 2025 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1132299210775105307,105466cyclictest0-21swapper21:57:060
1132299209815105329,104484cyclictest0-21swapper22:40:580
113229910666653444,53222cyclictest0-21swapper19:52:000
113229910657553475,53100cyclictest0-21swapper22:59:040
113229910656153385,53085cyclictest0-21swapper19:43:170
113229910654653402,53144cyclictest0-21swapper19:56:110
113229910650153426,53075cyclictest0-21swapper00:00:210
113229910648753434,53053cyclictest0-21swapper20:56:380
113229910647953455,53024cyclictest0-21swapper23:37:150
113229910646853473,52931cyclictest9-21ksoftirqd/000:32:200
113229910646553451,53014cyclictest0-21swapper20:43:340
113229910645053464,52986cyclictest0-21swapper23:48:480
113229910644753403,53044cyclictest0-21swapper23:08:560
113229910643953398,53041cyclictest0-21swapper19:15:290
113229910643753428,53009cyclictest0-21swapper20:46:550
113229910643453436,52998cyclictest0-21swapper21:52:240
113229910642153389,53032cyclictest0-21swapper20:30:510
113229910641853427,52991cyclictest0-21swapper22:25:040
113229910640353421,52982cyclictest0-21swapper23:34:040
113229910630453473,52831cyclictest0-21swapper20:04:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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