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2026-04-28 - 23:19
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack0slot2.osadl.org (updated Tue Apr 28, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89669525949,7sleep50-21swapper/507:05:095
897262995452,2cyclictest1139781-21kworker/u16:0+events_unbound10:05:485
89674125443,8sleep40-21swapper/407:05:494
897261994946,2cyclictest1374670-21kworker/u16:3+events_unbound12:09:204
13723622480,0sleep71372361-21rm10:45:157
89727299410,39cyclictest124-21kswapd011:49:317
897267994038,2cyclictest1506312-21kworker/u16:2+events_unbound11:54:396
897261994038,2cyclictest1557463-21kworker/u16:1+flush-8:012:04:394
8967152406,29sleep70-21swapper/707:05:277
897261993735,2cyclictest1139781-21kworker/u16:0+flush-8:010:32:364
897261993734,2cyclictest1139781-21kworker/u16:0+events_unbound10:49:074
897272993635,0cyclictest0-21swapper/712:26:077
897272993635,0cyclictest0-21swapper/708:54:087
897272993634,1cyclictest1580612-21ssh12:11:597
897272993633,2cyclictest1568507-21ssh12:07:077
897272993633,2cyclictest1550541-21kthreadcore11:59:287
897272993633,2cyclictest1550541-21kthreadcore11:59:287
897272993433,0cyclictest0-21swapper/710:20:067
897272993433,0cyclictest0-21swapper/710:17:597
897272993433,0cyclictest0-21swapper/709:35:447
897272993432,1cyclictest1385244-21ssh10:51:207
897261993431,2cyclictest1506312-21kworker/u16:2+events_unbound11:59:074
897261993431,2cyclictest1506312-21kworker/u16:2+events_unbound11:59:074
897272993332,0cyclictest0-21swapper/712:22:597
897272993332,0cyclictest0-21swapper/711:13:237
897272993331,1cyclictest0-21swapper/712:16:507
897272993330,1cyclictest1130610-21diskmemload11:55:307
897262993331,2cyclictest1557463-21kworker/u16:1+flush-8:012:14:345
897261993331,2cyclictest1557463-21kworker/u16:1+events_unbound12:31:354
897261993331,2cyclictest1252435-21kworker/u16:4+events_unbound10:47:144
897261993331,2cyclictest1111878-21kworker/u16:1+flush-8:009:19:434
897272993231,0cyclictest0-21swapper/712:37:567
897272993231,0cyclictest0-21swapper/711:32:557
897272993231,0cyclictest0-21swapper/711:16:277
897272993231,0cyclictest0-21swapper/707:09:087
897272993230,1cyclictest1130610-21diskmemload10:06:037
897272993229,2cyclictest1191531-21ssh09:33:597
897261993230,2cyclictest1139781-21kworker/u16:0+flush-8:010:00:284
897272993130,0cyclictest0-21swapper/711:27:357
897272993130,0cyclictest0-21swapper/711:01:517
897272993130,0cyclictest0-21swapper/710:28:287
897272993130,0cyclictest0-21swapper/709:57:047
897272993130,0cyclictest0-21swapper/709:57:047
897267993128,2cyclictest1252435-21kworker/u16:4+events_unbound10:54:146
897261993129,2cyclictest1506312-21kworker/u16:2+events_unbound11:52:384
897261993129,2cyclictest1411186-21kworker/u16:0+events_unbound11:58:264
897261993129,2cyclictest1411186-21kworker/u16:0+events_unbound11:35:164
897261993129,2cyclictest1374670-21kworker/u16:3+events_unbound12:19:344
897261993129,2cyclictest1252435-21kworker/u16:4+events_unbound10:58:164
897261993129,2cyclictest1111878-21kworker/u16:1+flush-8:009:24:364
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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