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2026-04-23 - 06:28
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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, lowest P state: performance
Characteristics of the 50 highest latencies:
System rackcslot6.osadl.org (updated Thu Apr 23, 2026 00:46:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
315197623890,12sleep0101ksoftirqd/019:05:190
315323399378377,1cyclictest0-21swapper/400:23:024
315323399377376,1cyclictest3235692-21kworker/4:121:39:024
315323399377375,1cyclictest3443540-21kworker/4:200:19:024
315323399377375,1cyclictest0-21swapper/423:23:024
315323399374373,1cyclictest3268993-21kworker/4:021:59:024
315323399374373,1cyclictest0-21swapper/423:43:024
315323399374373,1cyclictest0-21swapper/420:05:024
315323399374372,1cyclictest0-21swapper/422:03:014
315323399373372,1cyclictest0-21swapper/400:06:014
315323399373371,1cyclictest3443540-21kworker/4:200:31:014
315323399372371,1cyclictest0-21swapper/422:09:024
315323399372371,1cyclictest0-21swapper/421:32:024
315323399372370,1cyclictest0-21swapper/423:47:024
315323399371370,1cyclictest0-21swapper/423:56:024
315323399370368,1cyclictest3366809-21kworker/4:123:28:024
315323399370367,2cyclictest3141061-21kworker/4:019:22:014
315323399369368,1cyclictest0-21swapper/422:58:024
315323399369368,1cyclictest0-21swapper/421:26:024
315323399369367,1cyclictest3268993-21kworker/4:022:24:024
315323399368367,1cyclictest0-21swapper/422:10:014
315323399368366,1cyclictest3226216-21diskmemload23:34:024
315323399368366,1cyclictest3193167-21kworker/4:221:17:014
315323399368366,1cyclictest3193167-21kworker/4:221:17:014
315323399368366,1cyclictest0-21swapper/420:50:024
315323399367366,1cyclictest0-21swapper/422:50:024
315323399366365,1cyclictest3366809-21kworker/4:123:14:014
315323399366365,1cyclictest3141061-21kworker/4:019:47:024
315323399366365,1cyclictest3141061-21kworker/4:019:47:014
315323399366365,1cyclictest0-21swapper/419:32:024
315323399366364,1cyclictest3193167-21kworker/4:220:21:024
315323399366364,1cyclictest0-21swapper/420:30:014
315323399365364,1cyclictest3141061-21kworker/4:019:37:024
315323399365364,1cyclictest0-21swapper/422:46:024
315323399365364,1cyclictest0-21swapper/421:40:014
315323399365364,1cyclictest0-21swapper/421:12:024
315323399365364,1cyclictest0-21swapper/420:16:024
315323399365363,1cyclictest3193167-21kworker/4:220:58:014
315323399365363,1cyclictest3193167-21kworker/4:220:47:024
315323399364363,1cyclictest3193167-21kworker/4:221:08:024
315323399364363,1cyclictest3141061-21kworker/4:019:17:024
315323399363362,1cyclictest3443540-21kworker/4:200:13:024
315323399363362,1cyclictest3443540-21kworker/4:200:13:014
315323399363362,1cyclictest0-21swapper/423:53:024
315323399363361,1cyclictest3268993-21kworker/4:022:44:014
315323399363361,1cyclictest3268993-21kworker/4:022:44:014
315323399362361,1cyclictest0-21swapper/423:00:024
315323399362361,1cyclictest0-21swapper/419:54:014
315323399362360,1cyclictest0-21swapper/421:48:014
315323399362359,2cyclictest3268993-21kworker/4:022:38:024
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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