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2026-05-28 - 05:15
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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 Thu May 28, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
370429725141,7sleep40-21swapper/419:03:524
3704815994947,2cyclictest3910299-21kworker/u16:1+events_unbound23:22:296
370433624913,31sleep70-21swapper/719:04:277
3704813994846,2cyclictest83376-21kworker/u16:2+events_unbound00:12:355
628089430,36rtkit-daemon0-21swapper/519:02:455
3704823994338,4cyclictest3962978-21latency_hist21:17:087
3704823994338,4cyclictest3962978-21latency_hist21:17:087
3704813994239,2cyclictest83376-21kworker/u16:2+events_unbound23:37:095
3704813994238,4cyclictest3622499-21kworker/u16:2+flush-8:020:07:085
3704813994138,2cyclictest3910299-21kworker/u16:1+flush-8:022:57:085
3704813994038,2cyclictest4168097-21kworker/u16:2+events_unbound23:13:265
3704813993937,2cyclictest59025-21kworker/u16:0+events_unbound23:30:225
3704813993937,2cyclictest4096008-21kworker/u16:3+events_unbound22:58:105
3704813993937,2cyclictest4096008-21kworker/u16:3+events_unbound22:40:505
3704813993937,2cyclictest4096008-21kworker/u16:3+events_unbound00:33:415
3704813993937,2cyclictest3972685-21kworker/u16:3+events_unbound21:25:145
3704813993836,2cyclictest4096008-21kworker/u16:3+events_unbound23:24:255
3704813993836,2cyclictest3996858-21kworker/u16:0+events_unbound21:31:195
3704813993735,2cyclictest4096008-21kworker/u16:3+flush-8:023:47:315
3704813993735,2cyclictest3910299-21kworker/u16:1+events_unbound23:33:055
3704813993635,1cyclictest3910299-21kworker/u16:1+flush-8:023:57:455
3704813993634,2cyclictest4168097-21kworker/u16:2+events_unbound22:49:145
3704813993634,2cyclictest4096008-21kworker/u16:3+flush-8:000:02:455
3704813993634,2cyclictest3996858-21kworker/u16:0+flush-8:021:52:505
3704813993634,2cyclictest3996858-21kworker/u16:0+flush-8:021:52:505
3704813993634,2cyclictest3996858-21kworker/u16:0+events_unbound21:43:505
3704813993634,2cyclictest3910299-21kworker/u16:1+events_unbound22:36:305
3704813993634,2cyclictest3727756-21kworker/u16:3+flush-8:019:32:085
3704813993533,2cyclictest4096008-21kworker/u16:3+events_unbound23:54:055
3704813993533,2cyclictest4096008-21kworker/u16:3+events_unbound23:43:305
3704813993533,2cyclictest4096008-21kworker/u16:3+events_unbound23:20:305
3704813993533,2cyclictest4096008-21kworker/u16:3+events_unbound00:18:135
3704813993533,2cyclictest3996858-21kworker/u16:0+events_unbound22:22:495
3704813993533,2cyclictest3996858-21kworker/u16:0+events_unbound21:41:495
3704813993533,2cyclictest3949484-21kworker/u16:2+events_unbound22:04:505
3704813993533,2cyclictest3910299-21kworker/u16:1+events_unbound22:09:105
3704813993533,2cyclictest3910299-21kworker/u16:1+events_unbound21:35:185
3704813993533,2cyclictest3910299-21kworker/u16:1+events_unbound00:11:335
3704813993533,2cyclictest226118-21kworker/u16:1+events_unbound00:30:105
3704813993432,2cyclictest4168097-21kworker/u16:2+flush-8:023:07:415
3704813993432,2cyclictest4096008-21kworker/u16:3+flush-8:023:03:295
3704813993432,2cyclictest3949484-21kworker/u16:2+events_unbound21:59:145
3704815993331,2cyclictest3622499-21kworker/u16:2+flush-8:019:22:096
3704813993331,2cyclictest4096008-21kworker/u16:3+flush-8:022:18:065
3704813993331,2cyclictest4096008-21kworker/u16:3+events_unbound22:27:175
3704813993331,2cyclictest3949484-21kworker/u16:2+events_unbound21:49:145
3704813993331,2cyclictest3891321-21kworker/u16:0+flush-8:021:19:545
3704813993331,2cyclictest3823677-21kworker/u16:4+events_unbound21:08:065
38717862320,1chrt3871788-21turbostat.cron20:32:087
3704813993230,2cyclictest4168097-21kworker/u16:2+events_unbound22:43:265
3704813993230,2cyclictest3727756-21kworker/u16:3+events_unbound19:42:365
3704813993230,2cyclictest226118-21kworker/u16:1+events_unbound00:23:105
3704823993130,0cyclictest0-21swapper/700:22:337
3704813993129,2cyclictest3833656-21kworker/u16:1+flush-8:020:12:365
3704813993129,2cyclictest3622499-21kworker/u16:2+events_unbound19:52:385
3704809993129,2cyclictest4096008-21kworker/u16:3+flush-8:023:17:334
3704813993028,2cyclictest3949484-21kworker/u16:2+events_unbound22:14:545
3704813993028,2cyclictest3891321-21kworker/u16:0+events_unbound21:15:105
3704813993028,2cyclictest3891321-21kworker/u16:0+events_unbound21:15:105
3704823992928,0cyclictest0-21swapper/721:42:227
3704823992928,0cyclictest0-21swapper/719:22:347
3704823992928,0cyclictest0-21swapper/719:17:317
3704815992927,2cyclictest226118-21kworker/u16:1+flush-8:000:27:036
3704815992926,2cyclictest3996858-21kworker/u16:0+flush-8:022:27:096
3704813992927,2cyclictest3727756-21kworker/u16:3+events_unbound20:17:115
3704823992826,1cyclictest0-21swapper/721:02:297
3704823992823,4cyclictest635-21systemd-journal22:57:037
3704815992826,2cyclictest3996858-21kworker/u16:0+flush-8:021:52:266
3704815992826,2cyclictest3996858-21kworker/u16:0+flush-8:021:52:266
3704813992826,2cyclictest3704590-21kworker/u16:1+events_unbound19:38:185
3704815992724,2cyclictest4096008-21kworker/u16:3+events_unbound22:47:256
3704813992726,1cyclictest3823677-21kworker/u16:4+events_unbound20:57:075
40441482260,1chrt4044149-21needreboot21:47:327
3704823992625,0cyclictest0-21swapper/723:02:317
3704813992624,2cyclictest3823677-21kworker/u16:4+events_unbound20:26:175
3704809992624,2cyclictest3823677-21kworker/u16:4+events_unbound21:07:234
370440122616,7sleep60-21swapper/619:05:226
3704823992524,0cyclictest0-21swapper/722:07:337
3704813992523,2cyclictest3785355-21kworker/u16:0+events_unbound19:57:105
3704815992422,2cyclictest3910299-21kworker/u16:1+events_unbound21:47:376
3704809992422,2cyclictest4096008-21kworker/u16:3+events_unbound00:32:234
3704809992422,2cyclictest3910299-21kworker/u16:1+flush-8:022:37:234
3704809992422,2cyclictest3910299-21kworker/u16:1+events_unbound23:52:234
3704823992322,0cyclictest0-21swapper/723:57:227
3704815992321,2cyclictest83376-21kworker/u16:2+events_unbound00:27:206
3704815992321,2cyclictest4096008-21kworker/u16:3+flush-8:022:42:336
3704815992321,2cyclictest3785355-21kworker/u16:0+flush-8:020:07:346
3704815992317,6cyclictest3910299-21kworker/u16:1+flush-8:023:32:306
3704823992221,0cyclictest0-21swapper/721:56:167
3704823992221,0cyclictest0-21swapper/721:56:167
3704823992221,0cyclictest0-21swapper/719:32:227
3704823992220,1cyclictest0-21swapper/722:27:257
3704823992220,1cyclictest0-21swapper/719:12:297
3704815992220,2cyclictest3996858-21kworker/u16:0+flush-8:021:32:376
3704815992220,2cyclictest3650944-21kworker/u16:0+events_unbound19:12:226
3704815992219,2cyclictest3891321-21kworker/u16:0+flush-8:021:12:096
3704815992219,2cyclictest3891321-21kworker/u16:0+flush-8:021:12:096
3704813992220,2cyclictest3891321-21kworker/u16:0+flush-8:020:58:025
3704813992220,2cyclictest3843065-21kworker/u16:2+events_unbound20:45:185
3704813992220,2cyclictest3785355-21kworker/u16:0+events_unbound20:07:335
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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