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2026-03-31 - 07:50
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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 Tue Mar 31, 2026 00:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
398150721010,1sleep60-21swapper/622:52:446
38813022970,1sleep50-21swapper/522:08:125
36573162960,0sleep60-21swapper/620:32:456
35110712650,1sleep73511073-21kthreadcore19:13:067
3481638995048,2cyclictest3471875-21kworker/u16:1+events_unbound19:13:156
348112224535,7sleep40-21swapper/418:59:414
626589420,36rtkit-daemon0-21swapper/619:01:506
3481638994240,2cyclictest3978849-21kworker/u16:1+events_unbound23:25:486
3481629994240,2cyclictest3848029-21kworker/u16:0+flush-8:022:02:454
3481638993937,2cyclictest3861120-21kworker/u16:3+flush-8:022:37:456
3481638993937,2cyclictest3695455-21kworker/u16:3+events_unbound21:15:596
34811142393,31sleep70-21swapper/718:59:367
3481639993834,2cyclictest3638223-21munin-run20:22:457
348163999380,37cyclictest650-21systemd-journal23:12:397
3481638993836,2cyclictest4162361-21kworker/u16:0+events_unbound00:27:266
3481638993836,2cyclictest3956971-21kworker/u16:0+events_unbound23:14:036
3481638993836,2cyclictest3763212-21kworker/u16:0+events_unbound21:39:066
3481638993836,2cyclictest3763212-21kworker/u16:0+events_unbound21:39:066
3481638993836,2cyclictest3695455-21kworker/u16:3+events_unbound21:20:156
3481638993835,2cyclictest3861120-21kworker/u16:3+events_unbound22:27:466
3481634993833,5cyclictest3978849-21kworker/u16:1+flush-8:023:02:445
3481634993833,5cyclictest3978849-21kworker/u16:1+flush-8:023:02:445
348113223826,8sleep50-21swapper/518:59:505
3481639993732,4cyclictest3884307-21latency_hist22:12:447
3481638993735,2cyclictest3861120-21kworker/u16:3+events_unbound22:12:006
3481638993735,2cyclictest3419176-21kworker/u16:0+flush-8:019:18:096
3481634993734,2cyclictest4126698-21kworker/u16:3+flush-8:000:03:425
3481639993632,3cyclictest650-21systemd-journal22:47:407
3481638993634,2cyclictest4078544-21kworker/u16:4+events_unbound00:11:156
3481638993634,2cyclictest4078544-21kworker/u16:4+events_unbound00:06:186
3481638993634,2cyclictest3956971-21kworker/u16:0+events_unbound23:40:386
3481638993634,2cyclictest3695455-21kworker/u16:3+events_unbound21:03:566
3481638993634,2cyclictest3590862-21kworker/u16:1+events_unbound21:10:526
3481638993634,2cyclictest3590862-21kworker/u16:1+events_unbound20:52:126
3481638993533,2cyclictest4126698-21kworker/u16:3+events_unbound00:32:216
3481638993533,2cyclictest4078544-21kworker/u16:4+events_unbound23:56:066
3481638993533,2cyclictest3956971-21kworker/u16:0+events_unbound23:46:086
3481638993533,2cyclictest3861120-21kworker/u16:3+events_unbound22:58:486
3481638993533,2cyclictest3861120-21kworker/u16:3+events_unbound22:58:486
3481638993533,2cyclictest3570529-21kworker/u16:3+events_unbound20:02:126
3481638993533,2cyclictest3523906-21kworker/u16:4+events_unbound19:54:096
3481629993532,2cyclictest3861120-21kworker/u16:3+events_unbound22:22:594
3481638993432,2cyclictest3981522-21kworker/u16:4+events_unbound22:57:186
3481638993432,2cyclictest3978849-21kworker/u16:1+events_unbound23:20:226
3481638993432,2cyclictest3956971-21kworker/u16:0+events_unbound23:36:376
3481638993432,2cyclictest3929585-21kworker/u16:1+events_unbound22:39:066
3481638993432,2cyclictest3906613-21kworker/u16:2+events_unbound22:45:216
3481638993432,2cyclictest3763212-21kworker/u16:0+events_unbound21:33:306
3481638993432,2cyclictest3590862-21kworker/u16:1+events_unbound22:19:206
3481638993432,2cyclictest3590862-21kworker/u16:1+events_unbound22:19:206
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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