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2026-05-10 - 04:18
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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 Sun May 10, 2026 00:46:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
85618499381379,1cyclictest965191-21kworker/4:221:59:024
85618499381379,1cyclictest853043-21kworker/4:121:15:014
85618499381379,1cyclictest1154650-21kworker/4:100:22:024
85618499381379,1cyclictest1006787-21kworker/4:123:27:024
856184993810,380cyclictest0-21swapper/423:31:024
856184993810,380cyclictest0-21swapper/421:40:014
856184993810,380cyclictest0-21swapper/421:35:014
85618499380378,1cyclictest965191-21kworker/4:221:50:024
85618499380378,1cyclictest853043-21kworker/4:121:21:024
85618499380377,2cyclictest853043-21kworker/4:119:43:024
856184993800,380cyclictest0-21swapper/422:10:024
856184993800,380cyclictest0-21swapper/421:29:024
856184993800,379cyclictest0-21swapper/422:41:014
856184993800,379cyclictest0-21swapper/421:47:024
856184993800,379cyclictest0-21swapper/400:25:024
856184993800,1cyclictest0-21swapper/423:47:014
856184993800,1cyclictest0-21swapper/400:19:014
85618499379378,1cyclictest965191-21kworker/4:222:08:014
85618499379378,1cyclictest965191-21kworker/4:222:01:024
85618499379378,1cyclictest1093221-21kworker/4:000:11:014
85618499379378,1cyclictest1006787-21kworker/4:123:24:024
85618499379378,1cyclictest1006787-21kworker/4:122:28:024
856184993790,1cyclictest0-21swapper/422:31:024
856184993790,1cyclictest0-21swapper/422:31:014
85618499378377,1cyclictest853043-21kworker/4:119:25:014
85618499378377,1cyclictest1093221-21kworker/4:023:53:014
85618499378377,1cyclictest1006787-21kworker/4:123:11:014
85618499378377,1cyclictest0-21swapper/419:33:024
85618499378376,1cyclictest0-21swapper/420:27:024
85618499377376,1cyclictest1093221-21kworker/4:023:39:024
85618499377376,1cyclictest1006787-21kworker/4:122:57:024
85618499377376,1cyclictest0-21swapper/420:58:014
85618499377376,1cyclictest0-21swapper/419:37:024
85618499377376,1cyclictest0-21swapper/419:37:024
85618499377375,1cyclictest853043-21kworker/4:120:16:014
85618499376375,1cyclictest853043-21kworker/4:121:12:024
85618499376375,1cyclictest1006787-21kworker/4:122:15:024
85618499376374,1cyclictest0-21swapper/419:19:024
85618499374373,1cyclictest853043-21kworker/4:120:22:024
85618499373372,1cyclictest853043-21kworker/4:120:14:024
85618499373372,1cyclictest853043-21kworker/4:119:59:024
85617999373371,1cyclictest0-21swapper/321:36:023
85618499372371,1cyclictest853043-21kworker/4:119:47:024
85618499372370,1cyclictest853043-21kworker/4:120:42:024
85621099365362,2cyclictest953353-21kworker/7:221:36:027
85617999354353,1cyclictest917180-21kworker/3:122:56:023
85617999348346,1cyclictest0-21swapper/323:01:013
85621099346344,1cyclictest0-21swapper/722:56:027
85617999344343,1cyclictest0-21swapper/300:17:023
85617999343341,1cyclictest0-21swapper/321:17:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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