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2026-05-22 - 07:37
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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 Fri May 22, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2411225846,8sleep40-21swapper/419:04:304
24631995453,0cyclictest0-21swapper/722:13:017
2411524232,7sleep50-21swapper/519:04:315
242802415,31sleep70-21swapper/719:06:497
628089400,33rtkit-daemon0-21swapper/619:03:036
24631993735,1cyclictest0-21swapper/721:53:227
24631993732,4cyclictest153315-21latency_hist20:12:337
24631993635,0cyclictest0-21swapper/721:02:587
24631993534,0cyclictest0-21swapper/723:48:257
24631993534,0cyclictest0-21swapper/722:36:537
24631993433,0cyclictest0-21swapper/722:55:217
24631993432,1cyclictest680177-21ssh23:58:457
24631993432,1cyclictest535818-21ssh22:59:467
24631993332,0cyclictest0-21swapper/723:45:307
24631993332,0cyclictest0-21swapper/723:07:227
24631993332,0cyclictest0-21swapper/722:05:547
24631993332,0cyclictest0-21swapper/721:59:067
24631993332,0cyclictest0-21swapper/721:59:067
24631993332,0cyclictest0-21swapper/700:04:497
24631993332,0cyclictest0-21swapper/700:04:497
24622993331,2cyclictest115192-21kworker/u16:0+events_unbound20:52:585
24631993227,4cyclictest706334-21latency_hist00:12:327
24631993130,0cyclictest0-21swapper/722:45:507
24631993130,0cyclictest0-21swapper/722:08:507
24631993130,0cyclictest0-21swapper/721:19:457
24631993130,0cyclictest0-21swapper/721:19:457
24631993130,0cyclictest0-21swapper/700:16:507
24631993129,1cyclictest596778-21sh23:25:497
24631993129,1cyclictest596778-21sh23:25:497
24631993029,0cyclictest0-21swapper/700:35:377
24631992928,0cyclictest0-21swapper/723:56:257
24631992928,0cyclictest0-21swapper/722:40:257
24631992928,0cyclictest0-21swapper/700:30:097
24631992827,0cyclictest0-21swapper/722:51:057
24631992827,0cyclictest0-21swapper/721:33:147
24631992827,0cyclictest0-21swapper/721:26:397
24631992827,0cyclictest0-21swapper/721:16:067
24631992726,0cyclictest0-21swapper/723:32:217
24631992726,0cyclictest0-21swapper/723:18:267
24631992726,0cyclictest0-21swapper/721:41:017
24631992726,0cyclictest0-21swapper/721:12:317
24622992725,2cyclictest537309-21kworker/u16:3+events_unbound23:18:015
24631992625,0cyclictest0-21swapper/723:16:177
24626992624,2cyclictest115192-21kworker/u16:0+events_unbound21:12:496
24631992524,0cyclictest0-21swapper/723:10:177
24626992524,1cyclictest39069-21kworker/u16:3+events_unbound19:37:466
2463199240,22cyclictest56058-21missed_timers19:18:087
24622992420,3cyclictest501478-21kworker/u16:1+flush-8:023:42:585
24631992322,0cyclictest0-21swapper/723:34:217
24631992322,0cyclictest0-21swapper/719:15:477
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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