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2026-04-15 - 19:00
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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 Wed Apr 15, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10318872670,1sleep60-21swapper/611:22:556
10318872670,1sleep60-21swapper/611:22:556
9733452650,1sleep7973346-21sh11:00:137
46925225848,7sleep40-21swapper/407:07:084
469757994843,4cyclictest996608-21latency_hist11:09:577
469757994137,3cyclictest715237-21latency_hist09:14:577
4685282413,31sleep70-21swapper/707:05:277
469757994035,4cyclictest862046-21latency_hist10:14:577
469752993936,2cyclictest935791-21kworker/u16:0+events_unbound10:49:595
469752993634,2cyclictest935791-21kworker/u16:0+events_unbound11:00:585
469757993428,5cyclictest664666-21latency_hist08:49:577
469752993432,2cyclictest540495-21kworker/u16:3+events_unbound09:29:595
469752993230,2cyclictest883938-21kworker/u16:1+events_unbound10:35:225
11886992310,1chrt1188700-21sh12:25:317
10692542310,1chrt1069255-21sh11:39:397
46920923019,7sleep60-21swapper/607:06:306
469757992924,4cyclictest1057267-21latency_hist11:34:577
469752992927,2cyclictest995344-21kworker/u16:1+flush-8:011:10:175
469752992925,3cyclictest664339-21kworker/u16:0+events_unbound09:40:095
46920822917,9sleep50-21swapper/507:06:295
469752992826,2cyclictest935791-21kworker/u16:0+flush-8:010:47:585
469752992826,2cyclictest1176735-21kworker/u16:0+events_unbound12:34:525
469752992825,2cyclictest727926-21kworker/u16:1+events_unbound10:00:505
469757992726,0cyclictest0-21swapper/711:29:117
469757992725,1cyclictest0-21swapper/710:51:397
469757992721,5cyclictest635-21systemd-journal10:34:567
469752992725,2cyclictest764571-21kworker/u16:2+events_unbound09:54:525
469752992725,2cyclictest478222-21kworker/u16:2+flush-8:007:29:585
469752992724,2cyclictest664339-21kworker/u16:0+events_unbound09:20:115
469752992724,2cyclictest1009282-21kworker/u16:0+flush-8:011:49:585
469757992623,2cyclictest1104705-21ssh11:52:557
469752992624,2cyclictest947760-21kworker/u16:3+flush-8:012:05:265
469752992624,2cyclictest935791-21kworker/u16:0+events_unbound11:06:305
469752992624,2cyclictest883938-21kworker/u16:1+events_unbound10:33:075
469752992624,2cyclictest727926-21kworker/u16:1+flush-8:010:10:315
469752992624,2cyclictest664339-21kworker/u16:0+flush-8:009:45:005
469752992624,2cyclictest664339-21kworker/u16:0+flush-8:009:15:205
469752992624,2cyclictest664339-21kworker/u16:0+flush-8:009:15:205
469752992624,2cyclictest1176735-21kworker/u16:0+events_unbound12:26:065
469757992524,0cyclictest0-21swapper/712:08:257
469757992524,0cyclictest0-21swapper/711:13:187
469757992524,0cyclictest0-21swapper/709:29:437
469757992523,1cyclictest1116794-21ssh11:57:517
469757992523,1cyclictest0-21swapper/709:33:197
469757992522,2cyclictest787689-21ssh09:43:117
469752992523,2cyclictest727926-21kworker/u16:1+flush-8:009:55:025
469752992522,2cyclictest822143-21kworker/u16:4+events_unbound10:15:005
469757992423,0cyclictest0-21swapper/712:31:377
469757992423,0cyclictest0-21swapper/712:13:027
469757992423,0cyclictest0-21swapper/712:02:597
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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