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2026-07-27 - 00:48
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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 Jul 26, 2026 12:46:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
399297099382380,1cyclictest4062993-21kworker/1:109:50:021
399297099381380,1cyclictest4102120-21kworker/1:210:50:021
399297099380379,1cyclictest4041923-21kworker/1:009:25:021
399297099380378,1cyclictest4062993-21kworker/1:110:00:021
3992970993800,379cyclictest0-21swapper/112:18:021
399297099379378,1cyclictest4102120-21kworker/1:210:14:011
399297099379377,1cyclictest48051-21kworker/1:207:10:011
3992970993790,379cyclictest0-21swapper/111:15:011
399297099377376,1cyclictest3992835-21kworker/1:108:27:021
399297099377375,1cyclictest4041923-21kworker/1:009:21:021
399297099377375,1cyclictest3992835-21kworker/1:107:22:021
399297099375373,1cyclictest4102120-21kworker/1:210:43:011
399296299374372,1cyclictest53001-21kworker/0:210:55:010
399296299371370,1cyclictest53001-21kworker/0:212:20:010
399297899370369,1cyclictest0-21swapper/212:25:022
399297899370369,1cyclictest0-21swapper/208:05:012
399297899370369,1cyclictest0-21swapper/208:05:012
399297899369368,1cyclictest0-21swapper/212:30:022
399296299369368,1cyclictest53001-21kworker/0:207:52:020
399296299369367,1cyclictest0-21swapper/007:21:020
399297899368367,1cyclictest0-21swapper/211:40:022
399297899368366,1cyclictest3989820-21kworker/2:108:44:522
399296299368367,1cyclictest53001-21kworker/0:209:59:010
399296299368367,1cyclictest53001-21kworker/0:208:51:020
399296299368367,1cyclictest0-21swapper/010:05:020
399296299368367,1cyclictest0-21swapper/009:04:020
399296299368366,1cyclictest0-21swapper/009:20:020
399296299367366,1cyclictest53001-21kworker/0:208:35:020
399296299367366,1cyclictest0-21swapper/012:00:020
399296299367366,1cyclictest0-21swapper/011:08:010
399296299367366,1cyclictest0-21swapper/010:30:020
399296299367366,1cyclictest0-21swapper/009:34:010
399297899366365,1cyclictest0-21swapper/208:10:012
399296299366365,1cyclictest53001-21kworker/0:212:35:010
399296299366365,1cyclictest53001-21kworker/0:210:35:010
399296299366365,1cyclictest53001-21kworker/0:210:25:020
399296299366365,1cyclictest53001-21kworker/0:209:35:020
399296299366365,1cyclictest53001-21kworker/0:209:35:010
399296299366365,1cyclictest0-21swapper/011:10:020
399296299366365,1cyclictest0-21swapper/010:51:010
399296299366365,1cyclictest0-21swapper/010:45:020
399296299366365,1cyclictest0-21swapper/009:46:020
399296299366365,1cyclictest0-21swapper/008:32:010
399296299366365,1cyclictest0-21swapper/007:59:020
399296299366364,1cyclictest0-21swapper/008:57:020
399296299365363,1cyclictest0-21swapper/011:22:020
399297899364363,1cyclictest0-21swapper/209:10:012
399297899364363,1cyclictest0-21swapper/208:20:012
399297899364362,1cyclictest4147234-21kworker/2:112:01:022
399297899364362,1cyclictest0-21swapper/210:20:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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