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2026-08-21 - 07:19
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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 Aug 21, 2026 00:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
69770321010,1sleep7697701-21ssh22:15:267
9511162960,1sleep7951117-21rm00:02:177
29231625521,29sleep70-21swapper/719:04:327
29231625521,29sleep70-21swapper/719:04:327
29226425343,7sleep40-21swapper/419:03:494
29226425343,7sleep40-21swapper/419:03:494
632489430,36rtkit-daemon0-21swapper/619:03:556
632489430,36rtkit-daemon0-21swapper/619:03:556
29226524129,8sleep50-21swapper/519:03:505
29226524129,8sleep50-21swapper/519:03:505
292823993934,4cyclictest674731-21latency_hist22:07:327
292810993331,2cyclictest901699-21kworker/u16:3+events_unbound23:45:294
292823993226,5cyclictest987316-21latency_hist00:17:327
292818993129,2cyclictest963520-21kworker/u16:2+events_unbound00:27:546
292818993027,2cyclictest501291-21kworker/u16:1+flush-8:020:52:486
292818992927,2cyclictest963520-21kworker/u16:2+flush-8:000:12:596
292818992927,2cyclictest854915-21kworker/u16:1+events_unbound23:32:476
292818992826,2cyclictest889594-21kworker/u16:2+events_unbound23:47:566
29282399270,25cyclictest413405-21latency_hist20:07:327
292818992725,2cyclictest452450-21kworker/u16:3+flush-8:021:47:326
292818992724,3cyclictest712518-21kworker/u16:0+flush-8:023:07:476
292814992725,2cyclictest758996-21kworker/u16:3+flush-8:023:02:285
292814992725,2cyclictest600365-21kworker/u16:0+flush-8:022:12:455
292814992725,2cyclictest452450-21kworker/u16:3+flush-8:021:53:015
292818992523,2cyclictest927687-21kworker/u16:0+events_unbound23:52:556
292814992523,2cyclictest963520-21kworker/u16:2+flush-8:000:32:475
292814992523,2cyclictest962467-21kworker/u16:0+flush-8:000:23:035
292814992523,2cyclictest794314-21kworker/u16:2+events_unbound23:27:485
292814992523,2cyclictest553555-21kworker/u16:0+flush-8:021:22:485
292814992523,2cyclictest501291-21kworker/u16:1+events_unbound21:02:575
292814992521,3cyclictest854915-21kworker/u16:1+flush-8:023:32:585
292823992418,5cyclictest648-21systemd-journal19:12:337
292814992422,2cyclictest686342-21kworker/u16:1+events_unbound22:27:465
292814992422,2cyclictest452450-21kworker/u16:3+events_unbound21:48:005
292814992422,2cyclictest452450-21kworker/u16:3+events_unbound20:28:005
292814992422,2cyclictest335118-21kworker/u16:1+flush-8:019:32:565
292814992421,3cyclictest452450-21kworker/u16:3+events_unbound21:17:565
292818992319,3cyclictest491103-21kworker/u16:0+flush-8:020:47:516
292814992321,2cyclictest901699-21kworker/u16:3+flush-8:000:02:555
292814992321,2cyclictest452450-21kworker/u16:3+flush-8:021:12:465
292814992321,2cyclictest3795227-21kworker/u16:6+flush-8:019:22:565
292814992321,2cyclictest374151-21kworker/u16:0+events_unbound19:48:225
292810992319,3cyclictest292459-21kworker/u16:2+flush-8:019:37:494
29282399223,18cyclictest125-21kswapd022:32:557
292818992220,2cyclictest335118-21kworker/u16:1+flush-8:019:37:596
292818992220,2cyclictest302406-21kworker/u16:0+flush-8:019:23:026
292814992220,2cyclictest963520-21kworker/u16:2+events_unbound00:22:275
292814992220,2cyclictest963520-21kworker/u16:2+events_unbound00:22:275
292814992220,2cyclictest948965-21kworker/u16:5+flush-8:000:17:265
292814992220,2cyclictest854915-21kworker/u16:1+flush-8:023:22:385
292814992220,2cyclictest600365-21kworker/u16:0+events_unbound21:58:025
292823992116,4cyclictest542363-21latency_hist21:12:337
292823992115,5cyclictest520598-21latency_hist21:02:327
292823992115,5cyclictest520598-21latency_hist21:02:327
292818992119,2cyclictest673016-21kworker/u16:2+flush-8:022:17:586
292818992119,2cyclictest638573-21kworker/u16:1+flush-8:022:02:466
292818992119,2cyclictest393520-21kworker/u16:4+flush-8:020:37:286
292818992118,2cyclictest335118-21kworker/u16:1+events_unbound19:27:516
292814992119,2cyclictest758996-21kworker/u16:3+flush-8:022:53:015
292814992119,2cyclictest600365-21kworker/u16:0+flush-8:022:12:325
292814992119,2cyclictest452450-21kworker/u16:3+events_unbound20:47:485
292814992115,2cyclictest794314-21kworker/u16:2+events_unbound23:18:005
292823992017,2cyclictest125-21kswapd000:07:287
292818992018,2cyclictest962467-21kworker/u16:0+flush-8:000:22:576
292818992018,2cyclictest962467-21kworker/u16:0+events_unbound00:07:446
292818992018,2cyclictest292459-21kworker/u16:2+events_unbound19:52:596
292814992018,2cyclictest818754-21kworker/u16:1+flush-8:023:15:595
292814992018,2cyclictest698890-21kworker/u16:4+events_unbound22:18:005
292814992018,2cyclictest600365-21kworker/u16:0+events_unbound21:42:575
292814992018,2cyclictest354939-21kworker/u16:3+flush-8:019:42:555
292814992018,2cyclictest302406-21kworker/u16:0+events_unbound19:13:035
29281099202,17cyclictest892477-21irqcore23:37:484
29282399191,16cyclictest734846-21latency_hist22:32:327
292818991917,2cyclictest758996-21kworker/u16:3+events_unbound23:02:456
292818991917,2cyclictest491103-21kworker/u16:0+events_unbound21:07:466
292818991917,2cyclictest302406-21kworker/u16:0+flush-8:019:17:596
292818991917,2cyclictest1035040-21kworker/u16:0+flush-8:000:37:276
292814991917,2cyclictest530112-21kworker/u16:2+events_unbound21:07:485
292818991816,2cyclictest553555-21kworker/u16:0+flush-8:021:23:016
292818991816,2cyclictest540874-21kworker/u16:1+events_unbound21:12:556
292818991816,2cyclictest452450-21kworker/u16:3+events_unbound21:32:476
292818991816,2cyclictest452450-21kworker/u16:3+events_unbound21:32:476
292818991816,2cyclictest374151-21kworker/u16:0+events_unbound19:57:456
292818991816,2cyclictest292459-21kworker/u16:2+flush-8:019:12:286
292814991816,2cyclictest927687-21kworker/u16:0+events_unbound23:57:545
292814991816,2cyclictest889594-21kworker/u16:2+flush-8:023:52:305
292814991816,2cyclictest854915-21kworker/u16:1+flush-8:023:52:565
292814991816,2cyclictest712518-21kworker/u16:0+events_unbound23:06:515
292814991816,2cyclictest686342-21kworker/u16:1+flush-8:022:25:085
292814991816,2cyclictest673016-21kworker/u16:2+flush-8:022:05:205
292814991816,2cyclictest452450-21kworker/u16:3+flush-8:021:28:085
292814991816,2cyclictest452450-21kworker/u16:3+events_unbound20:57:485
292814991816,2cyclictest452450-21kworker/u16:3+events_unbound20:57:485
292814991816,2cyclictest403350-21kworker/u16:2+events_unbound20:13:055
292814991816,2cyclictest403350-21kworker/u16:2+events_unbound20:13:055
292814991815,2cyclictest335118-21kworker/u16:1+flush-8:019:27:385
292810991814,3cyclictest442469-21kworker/u16:0+flush-8:020:22:584
292818991715,2cyclictest854915-21kworker/u16:1+events_unbound23:27:586
292818991715,2cyclictest374151-21kworker/u16:0+events_unbound19:48:026
292814991715,2cyclictest698890-21kworker/u16:4+events_unbound22:39:165
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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