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2026-04-10 - 04:08
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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 Apr 10, 2026 00:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2360642940,1sleep60-21swapper/623:44:456
380137325847,7sleep60-21swapper/618:59:346
380132425241,8sleep40-21swapper/418:58:514
380143025040,7sleep50-21swapper/519:00:215
3801830994443,0cyclictest0-21swapper/722:16:407
3801830994237,4cyclictest81054-21latency_hist22:42:047
380183099410,39cyclictest3996384-21latency_hist20:42:057
3801825994139,2cyclictest4015651-21kworker/u16:4+events_unbound21:12:385
3801825994139,2cyclictest248319-21kworker/u16:0+events_unbound23:56:155
3801825994038,2cyclictest4140548-21kworker/u16:0+events_unbound22:01:325
3801825994038,2cyclictest4094979-21kworker/u16:4+events_unbound21:30:395
3801825994038,2cyclictest4094979-21kworker/u16:4+events_unbound21:30:395
3801825994038,2cyclictest4015651-21kworker/u16:4+events_unbound21:10:215
3801825994038,2cyclictest295958-21kworker/u16:2+events_unbound00:15:245
3801825994038,2cyclictest248319-21kworker/u16:0+events_unbound00:05:555
3801825993937,2cyclictest94845-21kworker/u16:4+events_unbound22:55:515
3801825993937,2cyclictest79533-21kworker/u16:1+flush-8:000:07:385
3801825993937,2cyclictest79533-21kworker/u16:1+flush-8:000:07:385
3801825993937,2cyclictest4153579-21kworker/u16:1+events_unbound21:51:515
3801825993937,2cyclictest4091626-21kworker/u16:0+events_unbound21:25:365
3801825993937,2cyclictest33096-21kworker/u16:5+events_unbound22:28:405
3801825993937,2cyclictest307742-21kworker/u16:4+events_unbound00:29:245
3801825993937,2cyclictest201746-21kworker/u16:5+events_unbound23:42:085
3801825993937,2cyclictest127676-21kworker/u16:0+events_unbound23:04:235
3801825993937,2cyclictest115088-21kworker/u16:2+events_unbound23:11:125
37928402393,30sleep70-21swapper/718:57:187
3801825993836,2cyclictest79533-21kworker/u16:1+events_unbound23:49:365
3801825993836,2cyclictest4078897-21kworker/u16:3+events_unbound21:53:005
3801825993836,2cyclictest4015651-21kworker/u16:4+flush-8:021:02:315
3801825993836,2cyclictest295958-21kworker/u16:2+events_unbound00:18:225
3801825993836,2cyclictest115088-21kworker/u16:2+events_unbound23:26:525
3801830993736,0cyclictest0-21swapper/723:31:107
3801830993736,0cyclictest0-21swapper/723:31:107
3801830993736,0cyclictest0-21swapper/721:17:597
3801830993735,1cyclictest4034678-21diskmemload22:25:307
3801830993733,3cyclictest343649-21sh00:29:107
3801825993735,2cyclictest4140548-21kworker/u16:0+events_unbound22:25:075
3801825993735,2cyclictest4078897-21kworker/u16:3+events_unbound22:03:275
3801825993735,2cyclictest201696-21kworker/u16:4+events_unbound23:36:365
3801825993735,2cyclictest115088-21kworker/u16:2+events_unbound23:16:485
3801825993734,2cyclictest3792087-21kworker/u16:1+events_unbound19:27:085
3801830993635,0cyclictest0-21swapper/721:56:447
3801825993634,2cyclictest4167034-21kworker/u16:2+events_unbound22:16:075
3801825993634,2cyclictest4140548-21kworker/u16:0+events_unbound22:41:245
3801825993634,2cyclictest271034-21kworker/u16:3+events_unbound00:26:485
3801825993634,2cyclictest19114-21kworker/u16:3+events_unbound22:20:155
3801825993634,2cyclictest189759-21kworker/u16:3+events_unbound23:30:355
3801825993634,2cyclictest189759-21kworker/u16:3+events_unbound23:30:355
3801825993633,2cyclictest3928545-21kworker/u16:2+events_unbound21:17:515
3801825993533,2cyclictest271076-21kworker/u16:4+events_unbound23:59:365
3801822993533,2cyclictest115088-21kworker/u16:2+flush-8:023:17:054
3801825993433,1cyclictest4116173-21kworker/u16:0+events_unbound21:34:105
3801825993432,2cyclictest81443-21kworker/u16:2+events_unbound22:47:065
3801825993432,2cyclictest81443-21kworker/u16:2+events_unbound22:47:065
3801825993432,2cyclictest4140548-21kworker/u16:0+flush-8:022:32:295
3801825993432,2cyclictest4078897-21kworker/u16:3+events_unbound21:46:075
3801825993432,2cyclictest127676-21kworker/u16:0+events_unbound23:01:415
3801830993331,1cyclictest4034678-21diskmemload00:20:587
3801825993331,2cyclictest6758-21kworker/u16:1+events_unbound22:12:015
3801825993331,2cyclictest6758-21kworker/u16:1+events_unbound22:12:015
3801825993331,2cyclictest4140548-21kworker/u16:0+events_unbound22:46:195
3801825993331,2cyclictest3928545-21kworker/u16:2+events_unbound21:37:065
3801825993331,2cyclictest201696-21kworker/u16:4+events_unbound23:38:005
94232320,0chrt9422-21cat22:12:057
3801830993232,0cyclictest0-21swapper/721:41:287
3801830993231,0cyclictest0-21swapper/722:17:597
3801830993227,4cyclictest129221-21latency_hist23:02:057
3801825993230,2cyclictest3996769-21kworker/u16:0+events_unbound20:50:205
3801830993131,0cyclictest0-21swapper/723:21:457
3801830993131,0cyclictest0-21swapper/721:36:257
3801830993129,1cyclictest139427-21ssh23:03:387
3801830993128,2cyclictest124-21kswapd000:02:287
3801829993128,2cyclictest3928545-21kworker/u16:2+events_unbound21:17:206
3801825993129,2cyclictest79533-21kworker/u16:1+events_unbound23:17:065
3801822993129,2cyclictest4078897-21kworker/u16:3+events_unbound21:47:334
1170742310,1sleep40-21swapper/422:56:504
3801830993029,0cyclictest0-21swapper/723:54:177
3801830993024,5cyclictest650-21systemd-journal23:37:047
3801825993028,2cyclictest3852391-21kworker/u16:0+events_unbound19:34:165
3801830992928,0cyclictest0-21swapper/723:12:487
3801830992928,0cyclictest0-21swapper/721:43:337
3801830992928,0cyclictest0-21swapper/720:42:357
3801830992927,1cyclictest4189238-21ssh22:04:317
3801830992927,1cyclictest247045-21ssh23:47:477
3801830992924,4cyclictest650-21systemd-journal23:57:057
3801829992925,3cyclictest4140548-21kworker/u16:0+events_unbound22:22:206
3801825992927,2cyclictest3852391-21kworker/u16:0+events_unbound20:02:075
3801825992927,2cyclictest3852391-21kworker/u16:0+events_unbound19:40:165
3801830992828,0cyclictest0-21swapper/700:10:547
3801830992828,0cyclictest0-21swapper/700:10:547
3801830992827,1cyclictest0-21swapper/721:58:347
3801830992827,0cyclictest0-21swapper/722:33:507
3801830992827,0cyclictest0-21swapper/720:51:207
3801830992827,0cyclictest0-21swapper/719:35:177
3801830992826,1cyclictest0-21swapper/722:56:467
3801825992826,2cyclictest3097908-21kworker/u16:4+events_unbound19:09:175
3801830992727,0cyclictest0-21swapper/700:13:587
3801830992726,0cyclictest0-21swapper/720:14:167
380183099270,26cyclictest5747-21gnome-shell19:08:157
3801825992725,2cyclictest3852391-21kworker/u16:0+events_unbound19:25:135
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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