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2026-08-20 - 01:42
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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 792 highest latencies:
System rack0slot2.osadl.org (updated Thu Aug 20, 2026 00:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
368227021000,1sleep73682268-21ssh22:48:237
319433125646,7sleep50-21swapper/519:06:335
319433325420,29sleep70-21swapper/719:06:357
3194698994541,3cyclictest3528076-21kworker/u16:4+flush-8:022:02:366
319440724332,8sleep40-21swapper/419:07:364
3194698994038,2cyclictest3696374-21kworker/u16:1+events_unbound23:22:596
3194698993936,2cyclictest3696374-21kworker/u16:1+events_unbound23:47:506
3194702993736,0cyclictest0-21swapper/722:32:387
3194702993634,1cyclictest3276250-21turbostat19:47:367
319470299360,34cyclictest3443741-21latency_hist21:12:367
3194702993530,3cyclictest3826487-21users23:48:107
319439823424,7sleep60-21swapper/619:07:306
3194702993332,0cyclictest0-21swapper/721:47:317
3194702993230,1cyclictest3431802-21diskmemload23:06:467
3194693993128,2cyclictest3344202-21kworker/u16:3+flush-8:020:22:315
3194693993128,2cyclictest3344202-21kworker/u16:3+flush-8:020:22:315
3194698993028,2cyclictest3564208-21kworker/u16:3+events_unbound22:27:506
3194702992928,0cyclictest0-21swapper/721:55:187
3194702992928,0cyclictest0-21swapper/721:21:147
3194702992928,0cyclictest0-21swapper/700:03:007
3194698992927,2cyclictest3840171-21kworker/u16:2+events_unbound23:58:066
3194693992925,3cyclictest3412349-21kworker/u16:2+events_unbound21:37:495
3194702992827,0cyclictest0-21swapper/722:00:197
3194702992726,0cyclictest0-21swapper/723:45:477
3194702992726,0cyclictest0-21swapper/721:41:147
3194702992726,0cyclictest0-21swapper/719:17:477
3194702992725,1cyclictest3900696-21ssh00:22:147
3194702992725,1cyclictest3900696-21ssh00:22:147
3194702992725,1cyclictest3431802-21diskmemload23:32:347
3194698992725,2cyclictest3887613-21kworker/u16:2+flush-8:000:22:306
3194698992725,2cyclictest3887613-21kworker/u16:2+flush-8:000:22:306
3194688992726,1cyclictest3528076-21kworker/u16:4+events_unbound22:59:304
3194688992726,1cyclictest3528076-21kworker/u16:4+events_unbound22:59:304
3194702992625,0cyclictest0-21swapper/722:14:467
3194702992624,1cyclictest3695283-21sh22:55:227
3194702992623,2cyclictest3887519-21ssh00:14:547
3194698992623,2cyclictest3184489-21kworker/u16:2+events_unbound20:07:516
3194698992622,3cyclictest3717534-21kworker/u16:0+flush-8:000:22:536
3194688992622,3cyclictest3227551-21kworker/u16:3+events_unbound19:27:494
3194702992524,0cyclictest0-21swapper/721:31:437
3194702992523,1cyclictest3875507-21ssh00:09:587
3194702992523,1cyclictest3431802-21diskmemload00:35:147
3194702992523,1cyclictest0-21swapper/723:40:307
3194702992523,1cyclictest0-21swapper/723:40:307
3194702992523,1cyclictest0-21swapper/721:47:417
3194693992523,2cyclictest3696374-21kworker/u16:1+events_unbound22:57:545
3194693992523,2cyclictest3696374-21kworker/u16:1+events_unbound22:57:545
3194693992522,2cyclictest3817081-21kworker/u16:3+flush-8:000:12:475
3194702992423,0cyclictest0-21swapper/723:07:417
3194702992423,0cyclictest0-21swapper/722:20:507
3194702992422,1cyclictest3623890-21ssh22:26:507
3194702992422,1cyclictest3431802-21diskmemload23:34:077
3194702992421,2cyclictest3502728-21ssh21:35:147
3194693992422,2cyclictest3528076-21kworker/u16:4+flush-8:023:08:015
3194693992422,2cyclictest3422458-21kworker/u16:0+events_unbound21:27:495
3194702992322,0cyclictest0-21swapper/723:27:187
3194702992322,0cyclictest0-21swapper/722:40:467
3194702992320,2cyclictest3910705-21ssh00:23:137
3194693992321,2cyclictest3887613-21kworker/u16:2+flush-8:000:37:315
3194693992321,2cyclictest3717534-21kworker/u16:0+flush-8:023:42:585
3194693992320,2cyclictest3237485-21kworker/u16:4+events_unbound19:52:545
3194688992319,3cyclictest3528076-21kworker/u16:4+flush-8:022:27:514
3194702992221,0cyclictest0-21swapper/722:59:387
3194702992221,0cyclictest0-21swapper/722:59:387
3194702992221,0cyclictest0-21swapper/722:08:387
3194702992221,0cyclictest0-21swapper/700:29:227
3194702992220,1cyclictest3742797-21ssh23:14:107
3194693992220,2cyclictest3525285-21kworker/u16:1+flush-8:021:47:425
3194693992219,2cyclictest3184489-21kworker/u16:2+flush-8:019:27:475
3194702992120,0cyclictest0-21swapper/719:57:397
3194702992119,1cyclictest3431802-21diskmemload22:30:237
3194702992119,1cyclictest0-21swapper/723:56:557
3194702992118,2cyclictest3574048-21ssh22:03:197
3194702992115,5cyclictest648-21systemd-journal20:32:377
3194698992119,2cyclictest3275116-21kworker/u16:0+flush-8:020:12:516
3194693992119,2cyclictest3275116-21kworker/u16:0+events_unbound20:02:585
3194702992017,2cyclictest3755345-21ssh23:20:087
3194698992018,2cyclictest3383869-21kworker/u16:4+flush-8:020:47:486
3194702991918,0cyclictest0-21swapper/721:26:317
3194702991918,0cyclictest0-21swapper/719:23:067
3194702991914,4cyclictest648-21systemd-journal21:02:367
3194698991915,3cyclictest3354192-21kworker/u16:2+flush-8:020:28:026
3194688991918,1cyclictest3528076-21kworker/u16:4+events_unbound23:18:514
3194688991917,2cyclictest3696374-21kworker/u16:1+flush-8:023:48:124
3194702991814,3cyclictest1302-21snmpd21:04:547
319470299180,16cyclictest1302-21snmpd20:30:447
3194693991816,2cyclictest3840778-21kworker/u16:4+flush-8:023:58:125
3194693991816,2cyclictest3528076-21kworker/u16:4+flush-8:023:22:315
3194693991816,2cyclictest3491040-21kworker/u16:3+events_unbound21:33:015
3194693991816,2cyclictest3199039-21kworker/u16:4+events_unbound19:08:075
3194693991815,2cyclictest3528076-21kworker/u16:4+flush-8:022:13:025
3194693991815,2cyclictest3525285-21kworker/u16:1+events_unbound21:52:425
3194693991815,2cyclictest3285829-21kworker/u16:1+flush-8:020:32:515
3194693991814,4cyclictest3441480-21kworker/u16:1+flush-8:021:27:375
3194688991815,2cyclictest3503311-21kworker/u16:0+flush-8:021:42:464
3194702991716,0cyclictest0-21swapper/721:14:317
3194702991716,0cyclictest0-21swapper/719:53:067
3194702991716,0cyclictest0-21swapper/700:01:267
319470299170,1cyclictest0-21swapper/720:38:007
3194698991715,2cyclictest3564208-21kworker/u16:3+flush-8:022:08:156
3194698991715,2cyclictest3383869-21kworker/u16:4+flush-8:021:07:366
3194693991716,1cyclictest3383869-21kworker/u16:4+events_unbound20:57:575
3194693991715,2cyclictest3564208-21kworker/u16:3+flush-8:022:47:515
3194693991715,2cyclictest3422458-21kworker/u16:0+events_unbound21:13:055
3194693991714,2cyclictest3184489-21kworker/u16:2+flush-8:019:23:085
3194688991715,2cyclictest3285829-21kworker/u16:1+flush-8:020:23:044
319470299168,7cyclictest5965-21gmain20:22:507
319470299160,1cyclictest0-21swapper/719:27:597
3194698991613,2cyclictest3184489-21kworker/u16:2+flush-8:019:27:526
3194698991612,4cyclictest0-21swapper/621:50:286
3194693991614,2cyclictest3717534-21kworker/u16:0+events_unbound00:02:495
3194688991614,2cyclictest3817081-21kworker/u16:3+events_unbound23:52:594
3194688991614,2cyclictest3564208-21kworker/u16:3+flush-8:022:08:044
3194688991613,2cyclictest3412349-21kworker/u16:2+flush-8:021:02:534
319470299154,9cyclictest6530-21gmain19:13:027
3194702991514,0cyclictest0-21swapper/722:43:077
3194698991514,1cyclictest0-21swapper/600:30:496
319469399152,5cyclictest0-21swapper/520:12:525
3194693991513,2cyclictest3696374-21kworker/u16:1+events_unbound23:38:005
3194693991513,2cyclictest3696374-21kworker/u16:1+events_unbound23:38:005
3194693991513,2cyclictest3184489-21kworker/u16:2+flush-8:019:17:525
319468899150,15cyclictest0-21swapper/421:51:594
319470299147,6cyclictest6050-21gmain20:42:547
319470299140,12cyclictest0-21swapper/720:02:597
3194698991413,1cyclictest0-21swapper/623:54:526
3194698991413,1cyclictest0-21swapper/622:50:336
3194698991412,2cyclictest3564206-21kworker/u16:1+events_unbound22:12:486
3194698991412,2cyclictest3528076-21kworker/u16:4+flush-8:023:18:136
3194698991412,2cyclictest3383108-21kworker/u16:1+events_unbound20:42:506
319469899140,1cyclictest0-21swapper/600:06:516
319469899140,14cyclictest0-21swapper/622:43:036
319469899140,14cyclictest0-21swapper/622:35:156
319469899140,14cyclictest0-21swapper/622:19:576
319469899140,14cyclictest0-21swapper/621:27:276
319469399148,5cyclictest3696374-21kworker/u16:1+flush-8:023:07:365
3194693991413,1cyclictest0-21swapper/522:55:565
3194693991413,1cyclictest0-21swapper/522:07:425
3194693991413,1cyclictest0-21swapper/500:22:395
3194693991412,2cyclictest3900451-21kworker/u16:3+flush-8:000:27:565
3194693991412,2cyclictest3817081-21kworker/u16:3+events_unbound00:07:585
3194693991412,2cyclictest3696374-21kworker/u16:1+events_unbound23:27:485
3194693991412,2cyclictest3597866-21kworker/u16:0+events_unbound22:18:045
3194693991412,2cyclictest3528076-21kworker/u16:4+flush-8:022:07:365
3194693991412,2cyclictest3525285-21kworker/u16:1+flush-8:021:43:025
319469399140,6cyclictest0-21swapper/522:22:505
319469399140,1cyclictest0-21swapper/523:33:005
319469399140,14cyclictest0-21swapper/523:50:585
3194688991413,1cyclictest0-21swapper/423:27:124
3194688991413,1cyclictest0-21swapper/422:33:554
3194688991413,1cyclictest0-21swapper/422:19:064
3194688991413,1cyclictest0-21swapper/419:43:294
3194688991413,1cyclictest0-21swapper/400:03:004
319468899140,1cyclictest0-21swapper/419:32:554
319468899140,1cyclictest0-21swapper/419:32:554
319468899140,14cyclictest0-21swapper/422:27:274
319468899140,14cyclictest0-21swapper/400:27:264
319470299139,3cyclictest1302-21snmpd19:42:117
3194702991312,0cyclictest0-21swapper/719:32:477
3194702991312,0cyclictest0-21swapper/719:32:477
3194702991310,2cyclictest1302-21snmpd20:22:357
3194702991310,2cyclictest1302-21snmpd20:22:357
3194702991310,2cyclictest1302-21snmpd19:10:197
3194698991312,1cyclictest0-21swapper/623:16:526
3194698991311,1cyclictest0-21swapper/620:22:496
319469899130,13cyclictest0-21swapper/620:37:576
319469899130,13cyclictest0-21swapper/600:08:166
3194693991312,1cyclictest3457088-21smartctl21:17:525
3194693991312,1cyclictest0-21swapper/522:35:555
3194693991312,1cyclictest0-21swapper/500:21:435
3194693991312,1cyclictest0-21swapper/500:21:435
3194693991311,2cyclictest3373105-21kworker/u16:0+flush-8:020:37:595
3194693991310,2cyclictest3661516-21tune2fs22:42:515
319468899138,4cyclictest3287117-21cat19:52:504
3194688991312,1cyclictest0-21swapper/422:40:514
3194688991312,1cyclictest0-21swapper/420:17:424
3194688991312,1cyclictest0-21swapper/420:17:424
3194688991312,1cyclictest0-21swapper/400:28:514
3194688991311,2cyclictest3564208-21kworker/u16:3+events_unbound22:43:054
3194688991310,2cyclictest3717534-21kworker/u16:0+flush-8:000:17:364
3194688991310,2cyclictest3717534-21kworker/u16:0+flush-8:000:17:364
319468899130,13cyclictest0-21swapper/422:05:514
319468899130,13cyclictest0-21swapper/421:59:234
319468899130,0cyclictest0-21swapper/421:25:104
319470299128,3cyclictest5965-21gmain20:07:587
3194702991211,0cyclictest0-21swapper/719:47:477
319470299120,11cyclictest1302-21snmpd20:51:247
319469899128,3cyclictest3433089-21cat21:07:516
3194698991211,1cyclictest0-21swapper/623:42:536
3194698991211,1cyclictest0-21swapper/623:41:286
3194698991211,1cyclictest0-21swapper/623:41:286
3194698991211,1cyclictest0-21swapper/622:05:466
3194698991211,1cyclictest0-21swapper/619:37:346
3194698991211,1cyclictest0-21swapper/619:37:346
3194698991211,1cyclictest0-21swapper/619:27:286
319469899120,1cyclictest0-21swapper/620:58:466
319469899120,1cyclictest0-21swapper/619:56:106
319469899120,12cyclictest0-21swapper/619:47:396
3194693991211,1cyclictest0-21swapper/520:48:045
3194693991211,1cyclictest0-21swapper/520:25:135
3194693991210,2cyclictest3412349-21kworker/u16:2+events_unbound21:02:505
3194693991210,2cyclictest3285829-21kworker/u16:1+flush-8:020:27:595
3194688991211,1cyclictest0-21swapper/423:35:434
3194688991211,1cyclictest0-21swapper/420:44:304
3194688991211,1cyclictest0-21swapper/420:17:134
3194688991211,1cyclictest0-21swapper/420:05:244
3194688991211,1cyclictest0-21swapper/419:21:534
3194688991211,1cyclictest0-21swapper/400:02:034
3194688991210,2cyclictest3875296-21kworker/u16:1+flush-8:000:13:024
319468899120,1cyclictest0-21swapper/420:31:254
319468899120,12cyclictest0-21swapper/419:08:194
319470299115,5cyclictest6466-21gmain20:13:267
319470299115,5cyclictest6124-21gmain20:56:107
319469899118,2cyclictest3696900-21/usr/sbin/munin22:57:516
319469899118,2cyclictest3696900-21/usr/sbin/munin22:57:516
319469899117,3cyclictest3709742-21cat23:02:506
319469899116,4cyclictest3208481-21/usr/sbin/munin19:13:026
3194698991110,1cyclictest0-21swapper/622:42:116
3194698991110,1cyclictest0-21swapper/621:29:216
319469899110,11cyclictest0-21swapper/621:12:576
319469899110,11cyclictest0-21swapper/620:18:526
319469899110,11cyclictest0-21swapper/620:18:526
319469899110,11cyclictest0-21swapper/620:03:356
319469899110,11cyclictest0-21swapper/619:45:086
319469899110,10cyclictest3686709-21kthreadcore22:52:546
319469399119,2cyclictest3295349-21kworker/u16:3+events_unbound19:57:555
319469399117,3cyclictest3257959-21cat19:37:505
319468899119,2cyclictest3184489-21kworker/u16:2+flush-8:019:37:594
3194688991110,1cyclictest0-21swapper/420:54:354
3194688991110,1cyclictest0-21swapper/419:13:504
319468899110,11cyclictest0-21swapper/420:01:274
319469899109,1cyclictest0-21swapper/620:37:296
319469899108,2cyclictest3875296-21kworker/u16:1+flush-8:000:13:046
319469899106,3cyclictest3770958-21tr23:27:506
319469899102,7cyclictest3456610-21cat21:17:506
319469899100,9cyclictest3788251-21grep23:32:566
319469899100,9cyclictest3723842-21grep23:07:536
319469899100,9cyclictest3403415-21cstates20:52:496
319469899100,4cyclictest3509961-21cut21:37:566
319469899100,3cyclictest3617869-21kthreadcore22:22:546
319469399109,1cyclictest0-21swapper/523:52:515
319469399108,2cyclictest0-21swapper/519:45:015
319468899109,1cyclictest0-21swapper/420:39:084
319468899108,2cyclictest3525285-21kworker/u16:1+events_unbound21:52:524
319468899108,2cyclictest3227551-21kworker/u16:3+events_unbound19:22:524
319468899107,3cyclictest3817081-21kworker/u16:3+flush-8:000:07:574
31946989997,2cyclictest86-21ksoftirqd/621:33:286
31946989995,3cyclictest3195102-21tr19:07:506
31946989990,8cyclictest3546392-21kthreadcore21:52:576
31946989990,8cyclictest3524375-21grep21:42:566
31946989990,8cyclictest0-21swapper/619:37:516
31946989990,4cyclictest3926489-21irqcore00:32:526
31946989990,1cyclictest0-21swapper/619:58:016
31946939997,2cyclictest3412349-21kworker/u16:2+events_unbound21:58:025
31946939997,2cyclictest3383108-21kworker/u16:1+events_unbound20:42:565
31946939996,2cyclictest3209714-21kthreadcore19:12:555
31946889998,1cyclictest0-21swapper/422:13:064
31946889997,2cyclictest3412349-21kworker/u16:2+flush-8:021:28:024
31946889994,4cyclictest3284626-21tr19:47:574
31946989980,7cyclictest0-21swapper/619:17:556
31946939987,1cyclictest0-21swapper/519:32:525
31946939987,1cyclictest0-21swapper/519:32:525
31946939986,2cyclictest3528076-21kworker/u16:4+events_unbound23:13:015
31946939983,4cyclictest3439966-21kthreadcore21:07:575
31946939983,4cyclictest3408217-21cut20:52:565
31946939983,4cyclictest3280106-21grep19:47:545
31946939980,2cyclictest0-21swapper/522:38:395
31946889987,1cyclictest0-21swapper/423:37:374
31946889987,1cyclictest0-21swapper/423:37:374
31946889987,1cyclictest0-21swapper/420:32:504
31946889986,2cyclictest3412349-21kworker/u16:2+events_unbound21:12:484
31946889986,1cyclictest0-21swapper/423:03:014
31946889984,3cyclictest3733013-21/usr/sbin/munin23:12:514
31946889984,3cyclictest3492922-21entropy21:32:514
31946889984,3cyclictest3458117-21cut21:17:554
31946889984,3cyclictest3413481-21cat20:57:514
31946889983,4cyclictest3931944-21cut00:32:554
31946889983,4cyclictest3806462-21tr23:42:524
31946889983,4cyclictest3770328-21tail23:27:504
31946889983,4cyclictest3729518-21sed23:07:574
31946889983,4cyclictest3676308-21grep22:47:544
31946889983,4cyclictest3321586-21cut20:07:574
31946939974,2cyclictest3757890-21interrupts23:22:505
31946939972,4cyclictest3625001-21grep22:27:495
31946939972,4cyclictest3315673-21tr20:07:495
31946889973,3cyclictest3506623-21cut21:37:544
31946889973,1cyclictest681rcuog/422:52:534
31946889972,4cyclictest3432915-21tune2fs21:07:504
31946889970,6cyclictest0-21swapper/420:47:554
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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