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2026-05-02 - 21:04
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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 rack7slot1.osadl.org (updated Sat May 02, 2026 12:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16034212361,56sleep30-21swapper/307:07:583
16172211455,54sleep00-21swapper/007:09:350
16032211151,21sleep10-21swapper/107:07:561
1429629065,20sleep20-21swapper/207:05:032
16316994426,16cyclictest0-21swapper/310:40:313
16316994328,13cyclictest0-21swapper/312:16:173
16316994327,13cyclictest0-21swapper/312:20:203
16316994327,13cyclictest0-21swapper/310:25:273
16316994325,15cyclictest0-21swapper/310:50:313
16316994325,15cyclictest0-21swapper/310:50:303
1631399426,18cyclictest0-21swapper/112:21:581
16316994127,11cyclictest0-21swapper/311:55:353
16316994126,13cyclictest0-21swapper/309:18:313
16316994125,13cyclictest0-21swapper/311:45:143
1631399419,29cyclictest0-21swapper/109:15:351
1631399418,30cyclictest0-21swapper/110:33:401
16316994025,13cyclictest0-21swapper/311:52:543
16316994025,13cyclictest0-21swapper/311:28:483
16316994025,13cyclictest0-21swapper/310:59:003
16316994025,13cyclictest0-21swapper/310:24:123
16316994025,13cyclictest0-21swapper/310:24:113
16316994025,13cyclictest0-21swapper/309:46:443
16316994025,13cyclictest0-21swapper/309:25:143
16313994011,26cyclictest0-21swapper/110:24:131
16313994011,26cyclictest0-21swapper/110:24:121
16316993925,12cyclictest0-21swapper/310:05:363
16316993925,12cyclictest0-21swapper/309:58:353
16316993924,13cyclictest0-21swapper/311:01:323
16316993920,17cyclictest0-21swapper/312:30:183
16315993913,24cyclictest0-21swapper/210:53:512
16315993913,24cyclictest0-21swapper/210:53:502
16313993910,26cyclictest0-21swapper/109:20:351
1631599385,19cyclictest0-21swapper/208:50:162
16315993821,14cyclictest0-21swapper/211:40:162
209712375,13sleep00-21swapper/007:15:540
1631699377,27cyclictest0-21swapper/311:05:153
16316993723,12cyclictest0-21swapper/310:00:353
16315993715,19cyclictest0-21swapper/211:31:142
16315993715,19cyclictest0-21swapper/211:26:342
1631399378,27cyclictest0-21swapper/111:25:031
16313993714,20cyclictest0-21swapper/110:46:311
16311993711,23cyclictest0-21swapper/009:48:520
301802364,13sleep00-21swapper/007:40:080
301802364,13sleep00-21swapper/007:40:070
297922365,11sleep00-21swapper/008:53:570
254122364,12sleep00-21swapper/008:42:350
1631699369,24cyclictest0-21swapper/309:50:273
1631699367,26cyclictest0-21swapper/311:36:193
16316993621,13cyclictest0-21swapper/309:37:223
16315993618,15cyclictest0-21swapper/209:30:382
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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