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2026-05-19 - 21:34
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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 Tue May 19, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31908182940,1sleep40-21swapper/408:18:014
3049368995452,2cyclictest3058918-21kworker/u16:3+flush-8:008:27:575
3049368995250,2cyclictest3110639-21kworker/u16:2+flush-8:008:18:125
3049368995149,2cyclictest3502773-21kworker/u16:0+flush-8:011:12:595
3049368994947,2cyclictest3273507-21kworker/u16:2+flush-8:009:02:575
35890522470,1sleep60-21swapper/611:12:586
3049368994745,2cyclictest3575707-21kworker/u16:4+flush-8:012:08:125
304892924736,7sleep50-21swapper/507:05:365
3049368994442,2cyclictest3648842-21kworker/u16:2+events_unbound11:53:205
3049368994341,2cyclictest3758097-21kworker/u16:2+events_unbound12:37:165
3049368994341,2cyclictest3709548-21kworker/u16:1+flush-8:012:23:075
3049368994341,2cyclictest3502774-21kworker/u16:3+events_unbound11:07:575
3049368994341,2cyclictest3429566-21kworker/u16:2+flush-8:010:18:115
304894824316,7sleep40-21swapper/407:05:514
3049368994241,1cyclictest3319952-21kworker/u16:4+flush-8:010:22:595
3049368994238,2cyclictest3319952-21kworker/u16:4+events_unbound10:03:165
37286012410,0sleep73728603-21cut12:08:057
3049371994139,2cyclictest3429566-21kworker/u16:2+flush-8:010:38:106
30404722403,31sleep70-21swapper/707:02:577
3049368993937,2cyclictest3575707-21kworker/u16:4+events_unbound11:51:485
3049368993937,2cyclictest3429566-21kworker/u16:2+events_unbound10:34:405
3049368993937,2cyclictest3429566-21kworker/u16:2+events_unbound10:16:125
3049368993937,2cyclictest3319952-21kworker/u16:4+flush-8:009:28:125
3049368993937,2cyclictest3099948-21kworker/u16:0+flush-8:007:48:105
3049368993936,2cyclictest3058918-21kworker/u16:3+events_unbound09:37:445
3049373993836,1cyclictest3589010-21perl11:12:587
3049368993836,2cyclictest3575707-21kworker/u16:4+flush-8:012:02:575
3049368993836,2cyclictest3502773-21kworker/u16:0+events_unbound10:46:045
3049368993836,2cyclictest3319952-21kworker/u16:4+events_unbound09:25:335
3049368993836,2cyclictest3307808-21kworker/u16:0+events_unbound09:43:165
3049368993836,2cyclictest3286957-21kworker/u16:1+events_unbound09:19:285
3049368993836,2cyclictest3273507-21kworker/u16:2+events_unbound09:13:575
3049368993834,3cyclictest3099948-21kworker/u16:0+flush-8:008:03:085
3049368993735,2cyclictest3502773-21kworker/u16:0+events_unbound11:02:085
3049368993735,2cyclictest3502773-21kworker/u16:0+events_unbound10:54:175
3049368993735,2cyclictest3429566-21kworker/u16:2+events_unbound10:38:155
3049368993735,2cyclictest3429565-21kworker/u16:1+events_unbound10:29:165
3049368993735,2cyclictest3429565-21kworker/u16:1+events_unbound10:29:165
3049368993735,2cyclictest3319952-21kworker/u16:4+events_unbound09:52:295
3049368993735,2cyclictest3319952-21kworker/u16:4+events_unbound09:52:295
3049368993634,2cyclictest3770324-21kworker/u16:3+events_unbound12:28:445
3049368993634,2cyclictest3575707-21kworker/u16:4+events_unbound12:17:125
3049368993634,2cyclictest3502773-21kworker/u16:0+events_unbound12:00:045
3049368993634,2cyclictest3502773-21kworker/u16:0+events_unbound10:50:105
3049368993634,2cyclictest3319952-21kworker/u16:4+flush-8:010:08:025
3049368993634,2cyclictest3319952-21kworker/u16:4+flush-8:009:58:085
3049368993533,2cyclictest3648842-21kworker/u16:2+events_unbound11:47:365
3049368993533,2cyclictest3634493-21kworker/u16:1+events_unbound11:30:365
3049368993533,2cyclictest3574739-21kworker/u16:1+events_unbound11:20:495
3049368993533,2cyclictest3502774-21kworker/u16:3+events_unbound11:06:125
3049368993533,2cyclictest3502773-21kworker/u16:0+events_unbound11:40:205
3049368993533,2cyclictest3273507-21kworker/u16:2+events_unbound09:09:105
3049368993533,2cyclictest3058918-21kworker/u16:3+flush-8:008:47:565
3049368993533,2cyclictest3058918-21kworker/u16:3+events_unbound09:35:085
3049368993432,2cyclictest3575707-21kworker/u16:4+events_unbound11:22:565
3049368993432,2cyclictest3502773-21kworker/u16:0+events_unbound11:34:285
3049368993432,2cyclictest3307808-21kworker/u16:0+events_unbound09:56:165
3049368993331,2cyclictest3575707-21kworker/u16:4+events_unbound12:18:285
33176262320,1chrt3317624-21ssh09:18:387
3049368993229,2cyclictest3099948-21kworker/u16:0+events_unbound07:37:465
3049368993229,2cyclictest3099948-21kworker/u16:0+events_unbound07:37:465
3049368993129,2cyclictest3058918-21kworker/u16:3+events_unbound08:58:025
3049371993029,1cyclictest3502773-21kworker/u16:0+events_unbound12:08:036
32219202290,1chrt3221921-21kthreadcore08:33:037
3049373992924,4cyclictest3624399-21latency_hist11:27:427
3049371992927,2cyclictest3502773-21kworker/u16:0+flush-8:011:42:576
35397402280,0sleep73539742-21grep10:52:557
3049373992827,0cyclictest0-21swapper/712:29:547
3049373992827,0cyclictest0-21swapper/711:32:317
3049373992827,0cyclictest0-21swapper/709:01:097
3049373992825,2cyclictest124-21kswapd010:27:547
3049373992825,2cyclictest124-21kswapd010:27:547
3049371992826,2cyclictest3099948-21kworker/u16:0+flush-8:007:43:136
3049368992826,2cyclictest3058918-21kworker/u16:3+flush-8:008:08:105
32924862270,1chrt3292489-21tr09:08:127
3049373992726,0cyclictest0-21swapper/711:08:087
3049373992726,0cyclictest0-21swapper/710:08:567
3049373992723,2cyclictest3791487-21ntpq12:33:127
3049373992624,1cyclictest0-21swapper/710:43:267
3049373992624,1cyclictest0-21swapper/708:19:447
3049368992624,2cyclictest3058918-21kworker/u16:3+events_unbound08:42:375
3049373992524,0cyclictest0-21swapper/708:01:177
3049373992520,4cyclictest3368707-21latency_hist09:42:427
3049371992522,2cyclictest3273507-21kworker/u16:2+flush-8:009:13:036
3049371992521,3cyclictest3099948-21kworker/u16:0+flush-8:007:58:006
3049368992523,2cyclictest3058918-21kworker/u16:3+events_unbound08:13:095
3049368992523,2cyclictest3058918-21kworker/u16:3+events_unbound07:34:585
33771582240,1chrt3377159-21grep09:43:067
3049373992423,0cyclictest0-21swapper/711:58:587
3049373992423,0cyclictest0-21swapper/710:14:487
3049373992423,0cyclictest0-21swapper/709:48:297
3049373992423,0cyclictest0-21swapper/709:48:297
3049373992423,0cyclictest0-21swapper/707:54:177
3049373992423,0cyclictest0-21swapper/707:49:367
3049373992423,0cyclictest0-21swapper/707:30:467
3049371992422,2cyclictest3709548-21kworker/u16:1+flush-8:012:21:006
3049368992422,2cyclictest3049138-21kworker/u16:1+events_unbound07:22:445
3049373992322,0cyclictest0-21swapper/710:03:377
3049373992322,0cyclictest0-21swapper/708:40:177
3049373992322,0cyclictest0-21swapper/708:27:017
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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