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2026-06-10 - 01:51
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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 Wed Jun 10, 2026 00:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40447152690,0sleep40-21swapper/423:26:394
40128592680,1sleep74012861-21latency_hist23:16:167
346343725948,8sleep40-21swapper/419:05:324
3463802995250,2cyclictest3927822-21kworker/u16:1+flush-8:023:06:326
3463802994947,2cyclictest3544271-21kworker/u16:2+flush-8:021:26:466
3463802994846,2cyclictest3709690-21kworker/u16:1+events_unbound21:51:436
345435724736,7sleep50-21swapper/519:01:245
3463802994643,2cyclictest1930336-21kworker/u16:2+events_unbound19:16:316
3463802994543,2cyclictest3544271-21kworker/u16:2+events_unbound22:21:496
3463802994442,2cyclictest3709690-21kworker/u16:1+events_unbound21:46:486
3463802994442,2cyclictest3709690-21kworker/u16:1+events_unbound21:46:486
3463802994442,2cyclictest3544271-21kworker/u16:2+events_unbound20:21:416
3463802994442,2cyclictest3544271-21kworker/u16:2+events_unbound20:01:406
3463802994341,2cyclictest3879686-21kworker/u16:1+flush-8:022:31:496
3463802994341,2cyclictest3879686-21kworker/u16:1+flush-8:022:31:496
34604462431,31sleep70-21swapper/719:01:427
3463802994240,2cyclictest3504199-21kworker/u16:0+flush-8:019:41:446
3463793994240,2cyclictest3544271-21kworker/u16:2+flush-8:021:16:424
3463802994139,2cyclictest3544271-21kworker/u16:2+events_unbound22:16:446
3463802994038,2cyclictest3659357-21kworker/u16:3+flush-8:020:56:456
3463807993933,5cyclictest3649712-21latency_hist20:41:167
3463802993937,2cyclictest2749613-21kworker/u16:4+events_unbound19:26:456
3463802993836,2cyclictest4024570-21kworker/u16:3+events_unbound23:21:376
3463802993836,2cyclictest3927822-21kworker/u16:1+flush-8:022:56:456
3463802993836,2cyclictest3900175-21kworker/u16:3+events_unbound22:28:186
3463802993836,2cyclictest3832148-21kworker/u16:0+events_unbound22:11:496
3463802993835,2cyclictest3544271-21kworker/u16:2+flush-8:022:41:316
3463798993835,2cyclictest3544271-21kworker/u16:2+events_unbound22:11:315
3463802993735,2cyclictest3544271-21kworker/u16:2+flush-8:020:41:396
3463802993734,2cyclictest4082784-21kworker/u16:3+events_unbound00:01:336
3463802993734,2cyclictest3544271-21kworker/u16:2+flush-8:020:06:326
3463802993634,2cyclictest4133306-21kworker/u16:5+events_unbound00:08:436
3463802993634,2cyclictest3927822-21kworker/u16:1+events_unbound23:04:066
3463802993634,2cyclictest3927822-21kworker/u16:1+events_unbound22:56:016
3463802993634,2cyclictest3832148-21kworker/u16:0+events_unbound22:06:486
3463802993634,2cyclictest3544271-21kworker/u16:2+events_unbound23:11:516
3463802993634,2cyclictest3544271-21kworker/u16:2+events_unbound19:51:456
3463802993634,2cyclictest3515642-21kworker/u16:1+flush-8:019:31:466
3463802993634,2cyclictest3472459-21kworker/u16:3+flush-8:019:36:376
3463802993634,2cyclictest3472459-21kworker/u16:3+flush-8:019:36:376
3463798993634,2cyclictest3927822-21kworker/u16:1+flush-8:023:06:115
3463802993533,2cyclictest4133302-21kworker/u16:2+events_unbound00:32:396
3463802993533,2cyclictest4082784-21kworker/u16:3+events_unbound23:53:226
3463802993533,2cyclictest4082784-21kworker/u16:3+events_unbound23:53:226
3463802993533,2cyclictest3832148-21kworker/u16:0+events_unbound23:27:316
3463802993533,2cyclictest3544271-21kworker/u16:2+events_unbound21:58:046
3463798993532,2cyclictest3544271-21kworker/u16:2+flush-8:020:16:425
3463807993429,4cyclictest3697598-21latency_hist21:06:167
3463802993331,2cyclictest4133302-21kworker/u16:2+events_unbound00:17:426
3463802993331,2cyclictest3544271-21kworker/u16:2+events_unbound21:44:316
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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