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2026-05-17 - 02:47
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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 50 highest latencies:
System rack0slot2.osadl.org (updated Sun May 17, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25485002970,1sleep60-21swapper/600:22:316
184249424635,7sleep40-21swapper/419:07:454
1842788994543,2cyclictest2488194-21kworker/u16:3+events_unbound00:28:205
1842797994140,0cyclictest0-21swapper/723:28:067
18424322415,31sleep70-21swapper/719:06:527
628089400,33rtkit-daemon0-21swapper/519:05:355
1842797994034,5cyclictest635-21systemd-journal00:37:517
1842786994038,2cyclictest2473133-21kworker/u16:2+events_unbound23:57:494
1842786994038,2cyclictest2473133-21kworker/u16:2+events_unbound23:57:494
1842788993836,2cyclictest2488194-21kworker/u16:3+events_unbound00:14:495
1842788993836,2cyclictest2377064-21kworker/u16:1+events_unbound00:26:225
1842788993836,2cyclictest2149768-21kworker/u16:4+events_unbound22:59:505
1842788993836,2cyclictest2149768-21kworker/u16:4+events_unbound21:44:145
1842788993836,2cyclictest2125609-21kworker/u16:3+events_unbound21:29:585
1842797993735,1cyclictest0-21swapper/720:28:057
1842797993735,1cyclictest0-21swapper/720:28:057
1842788993735,2cyclictest2377064-21kworker/u16:1+events_unbound00:35:495
1842788993735,2cyclictest2377064-21kworker/u16:1+events_unbound00:21:495
1842788993735,2cyclictest2125609-21kworker/u16:3+events_unbound22:30:535
1842788993734,2cyclictest2318886-21kworker/u16:2+flush-8:023:37:575
1842788993634,2cyclictest2427661-21kworker/u16:4+flush-8:023:36:335
1842788993634,2cyclictest2377064-21kworker/u16:1+events_unbound23:54:215
1842788993634,2cyclictest2377064-21kworker/u16:1+events_unbound23:54:215
1842788993634,2cyclictest2377064-21kworker/u16:1+events_unbound23:12:345
1842788993634,2cyclictest2377064-21kworker/u16:1+events_unbound00:00:055
1842788993634,2cyclictest2377064-21kworker/u16:1+events_unbound00:00:055
1842788993634,2cyclictest2331407-21kworker/u16:0+events_unbound23:04:105
1842788993634,2cyclictest2222459-21kworker/u16:1+flush-8:022:53:455
1842788993634,2cyclictest2222459-21kworker/u16:1+events_unbound22:52:345
1842788993634,2cyclictest2222459-21kworker/u16:1+events_unbound22:36:335
1842788993634,2cyclictest2173657-21kworker/u16:0+flush-8:022:12:465
1842788993634,2cyclictest2149768-21kworker/u16:4+events_unbound22:02:255
1842788993634,2cyclictest1981270-21kworker/u16:0+events_unbound21:25:135
1842788993634,2cyclictest1971456-21kworker/u16:3+flush-8:020:33:195
1842788993533,2cyclictest2377064-21kworker/u16:1+events_unbound23:49:055
1842788993533,2cyclictest2222459-21kworker/u16:1+events_unbound22:21:575
1842788993533,2cyclictest2149768-21kworker/u16:4+events_unbound21:55:465
1842788993533,2cyclictest2125609-21kworker/u16:3+events_unbound22:47:295
1842788993533,2cyclictest2057527-21kworker/u16:3+events_unbound21:19:465
1842786993533,2cyclictest2415558-21kworker/u16:3+events_unbound23:34:574
1842786993533,2cyclictest2377064-21kworker/u16:1+events_unbound23:12:054
1842786993533,2cyclictest2222459-21kworker/u16:1+events_unbound22:30:294
1842786993533,2cyclictest2057527-21kworker/u16:3+events_unbound21:16:414
1842797993433,0cyclictest0-21swapper/720:08:177
1842788993432,2cyclictest2377064-21kworker/u16:1+events_unbound00:06:305
1842788993432,2cyclictest2331407-21kworker/u16:0+flush-8:023:24:575
1842788993432,2cyclictest2331407-21kworker/u16:0+events_unbound23:29:425
1842788993432,2cyclictest2318886-21kworker/u16:2+events_unbound23:13:295
1842788993432,2cyclictest2318886-21kworker/u16:2+events_unbound23:13:295
1842788993432,2cyclictest2125609-21kworker/u16:3+events_unbound22:25:465
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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