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2026-09-11 - 09:21
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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 100 highest latencies:
System rack0slot2.osadl.org (updated Fri Sep 11, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27258222690,0sleep50-21swapper/521:34:415
242870225745,8sleep40-21swapper/419:08:104
241928025519,30sleep70-21swapper/719:05:007
242867224534,8sleep60-21swapper/619:07:486
2429116994136,4cyclictest3176141-21latency_hist00:39:587
242879823928,8sleep50-21swapper/519:09:315
2429116993328,4cyclictest3115201-21latency_hist00:14:597
2429116993231,0cyclictest0-21swapper/723:32:267
2429116993231,0cyclictest0-21swapper/721:17:067
2429116993130,0cyclictest0-21swapper/700:23:177
2429116993125,5cyclictest645-21systemd-journal22:24:587
2429116993027,2cyclictest2954916-21ssh23:06:027
2429116993024,5cyclictest645-21systemd-journal00:19:577
2429110992927,2cyclictest2635765-21kworker/u16:5+events_unbound22:30:545
30157532280,0chrt0-21swapper/523:31:095
2429116992827,0cyclictest0-21swapper/722:06:187
2429116992827,0cyclictest0-21swapper/721:56:337
2429116992827,0cyclictest0-21swapper/721:21:147
2429110992826,2cyclictest2775065-21kworker/u16:3+flush-8:023:42:335
2429116992726,0cyclictest0-21swapper/723:01:027
2429116992726,0cyclictest0-21swapper/700:06:267
27259122260,1chrt2725913-21rm21:34:517
2429116992625,0cyclictest0-21swapper/723:44:377
2429116992625,0cyclictest0-21swapper/722:59:137
2429116992624,1cyclictest2737839-21ssh21:39:257
2429116992624,1cyclictest0-21swapper/721:26:337
2429114992622,3cyclictest2655655-21cat21:04:596
2429110992624,2cyclictest2635765-21kworker/u16:5+flush-8:021:55:295
2429110992623,2cyclictest3113996-21kworker/u16:2+flush-8:000:15:045
2429116992524,0cyclictest0-21swapper/723:12:007
2429116992522,2cyclictest3089296-21sh00:02:007
2429116992423,0cyclictest0-21swapper/723:16:137
2429116992423,0cyclictest0-21swapper/722:53:147
2429116992423,0cyclictest0-21swapper/722:38:557
2429116992423,0cyclictest0-21swapper/722:00:417
2429116992423,0cyclictest0-21swapper/700:31:327
2429116992422,1cyclictest2772862-21ssh21:51:277
2429116992421,2cyclictest3151380-21ssh00:29:197
2429114992420,3cyclictest2665608-21kworker/u16:2+flush-8:021:16:046
2429110992422,2cyclictest2835808-21kworker/u16:1+flush-8:000:07:335
2429110992422,2cyclictest2635765-21kworker/u16:5+flush-8:021:36:365
2429110992422,2cyclictest2613867-21kworker/u16:3+events_unbound20:44:305
2429110992422,2cyclictest2613867-21kworker/u16:3+events_unbound20:44:305
2429110992422,2cyclictest2471130-21kworker/u16:2+events_unbound19:49:025
2429116992322,0cyclictest0-21swapper/722:26:017
2429116992322,0cyclictest0-21swapper/719:57:167
2429110992321,2cyclictest2835808-21kworker/u16:1+flush-8:022:52:025
2429116992221,0cyclictest0-21swapper/720:23:437
2429110992220,2cyclictest2665608-21kworker/u16:2+events_unbound21:10:065
2429110992220,2cyclictest2549270-21kworker/u16:1+events_unbound20:13:195
2429116992120,0cyclictest0-21swapper/723:49:447
2429116992120,0cyclictest0-21swapper/723:49:447
2429116992120,0cyclictest0-21swapper/722:47:567
2429116992120,0cyclictest0-21swapper/722:47:567
2429116992120,0cyclictest0-21swapper/722:14:297
2429116992120,0cyclictest0-21swapper/720:49:277
2429116992119,1cyclictest0-21swapper/722:40:447
2429116992119,1cyclictest0-21swapper/722:40:447
242911699210,1cyclictest0-21swapper/722:30:217
2429110992119,2cyclictest2549270-21kworker/u16:1+events_unbound20:38:345
2429110992119,2cyclictest2549270-21kworker/u16:1+events_unbound20:38:345
2429110992119,2cyclictest2451082-21kworker/u16:0+events_unbound20:32:345
2429116992019,0cyclictest0-21swapper/720:58:127
2429116992019,0cyclictest0-21swapper/720:03:557
2429116992018,1cyclictest0-21swapper/721:46:217
2429110992018,2cyclictest2626767-21kworker/u16:4+events_unbound21:08:385
2429110992018,2cyclictest2471130-21kworker/u16:2+events_unbound19:37:185
2429110992018,2cyclictest2451082-21kworker/u16:0+events_unbound21:20:105
2429110992018,2cyclictest2451082-21kworker/u16:0+events_unbound19:20:475
2429110992018,2cyclictest1747060-21kworker/u16:4+flush-8:019:53:065
2429116991918,0cyclictest0-21swapper/720:30:287
2429116991918,0cyclictest0-21swapper/719:31:037
2429110991917,2cyclictest2626767-21kworker/u16:4+events_unbound20:54:145
2429110991917,2cyclictest2549270-21kworker/u16:1+events_unbound20:48:185
2429110991917,2cyclictest2471130-21kworker/u16:2+events_unbound19:34:385
2429110991916,2cyclictest2726327-21kworker/u16:2+flush-8:021:40:185
2429116991817,0cyclictest0-21swapper/720:51:477
2429116991817,0cyclictest0-21swapper/720:18:427
2429116991817,0cyclictest0-21swapper/720:13:047
2429116991817,0cyclictest0-21swapper/719:46:117
242911499180,14cyclictest0-21swapper/622:38:026
2429110991816,2cyclictest2775065-21kworker/u16:3+flush-8:023:49:125
2429110991816,2cyclictest2775065-21kworker/u16:3+flush-8:023:49:125
2429110991816,2cyclictest2775065-21kworker/u16:3+events_unbound22:24:535
2429110991816,2cyclictest2775064-21kworker/u16:0+events_unbound22:10:045
2429110991816,2cyclictest2549270-21kworker/u16:1+events_unbound20:19:465
2429116991716,0cyclictest0-21swapper/721:07:577
2429116991716,0cyclictest0-21swapper/720:37:477
2429116991716,0cyclictest0-21swapper/720:37:477
2429116991716,0cyclictest0-21swapper/719:16:557
2429116991714,2cyclictest0-21swapper/719:41:507
2429116991710,5cyclictest645-21systemd-journal21:14:587
2429114991713,3cyclictest2896428-21cat22:44:586
2429114991713,3cyclictest2896428-21cat22:44:586
2429110991715,2cyclictest2775065-21kworker/u16:3+events_unbound00:13:215
2429110991715,2cyclictest2549270-21kworker/u16:1+events_unbound20:21:145
2429110991715,2cyclictest2451082-21kworker/u16:0+flush-8:020:56:305
2429110991715,2cyclictest2451082-21kworker/u16:0+events_unbound20:25:345
2429110991713,3cyclictest3070414-21kthreadcore23:55:185
2429108991710,6cyclictest2548891-21latency_hist20:09:594
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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