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2026-03-28 - 10:00
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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 Sat Mar 28, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2555632970,1sleep7255562-21grep23:12:577
3904668994947,2cyclictest160415-21kworker/u16:5+flush-8:023:18:196
3904668994947,2cyclictest160415-21kworker/u16:5+flush-8:023:18:196
390414924838,7sleep40-21swapper/418:59:574
3904668994745,2cyclictest62875-21kworker/u16:4+flush-8:022:08:216
3904668994644,2cyclictest299854-21kworker/u16:1+events_unbound23:46:156
3266862450,1sleep50-21swapper/523:42:285
3904668994341,2cyclictest327094-21kworker/u16:2+events_unbound23:56:276
3904668994341,2cyclictest327094-21kworker/u16:2+events_unbound23:52:446
3904668994341,2cyclictest299854-21kworker/u16:1+events_unbound00:17:536
3904668994341,2cyclictest267077-21kworker/u16:0+events_unbound00:01:476
3904668994341,2cyclictest195975-21kworker/u16:1+events_unbound23:12:196
3904668994341,2cyclictest16099-21kworker/u16:5+events_unbound21:49:436
3904668994340,2cyclictest195975-21kworker/u16:1+events_unbound23:12:586
3904668994240,2cyclictest51900-21kworker/u16:1+events_unbound21:59:026
3904668994240,2cyclictest160415-21kworker/u16:5+events_unbound22:36:436
3904670994134,6cyclictest650-21systemd-journal19:12:577
3904668994139,2cyclictest16099-21kworker/u16:5+events_unbound21:43:556
3904668994139,2cyclictest160415-21kworker/u16:5+events_unbound22:40:126
390414124116,8sleep50-21swapper/518:59:505
3904668994038,2cyclictest4138081-21kworker/u16:3+events_unbound21:05:316
3904668994038,2cyclictest4089870-21kworker/u16:2+events_unbound21:13:596
3904668994038,2cyclictest398728-21kworker/u16:3+events_unbound00:26:156
3904668994038,2cyclictest195975-21kworker/u16:1+events_unbound22:55:526
3904668994038,2cyclictest160415-21kworker/u16:5+events_unbound23:04:476
3904668993937,2cyclictest4089870-21kworker/u16:2+events_unbound21:30:436
3904668993937,2cyclictest4013541-21kworker/u16:4+flush-8:020:33:196
3904668993937,2cyclictest267077-21kworker/u16:0+events_unbound23:42:406
3904668993937,2cyclictest267077-21kworker/u16:0+events_unbound23:35:116
3904668993937,2cyclictest267077-21kworker/u16:0+events_unbound00:21:226
3904668993937,2cyclictest207500-21kworker/u16:2+events_unbound23:26:196
3904668993937,2cyclictest160415-21kworker/u16:5+events_unbound23:02:546
3904668993937,2cyclictest160415-21kworker/u16:5+events_unbound22:50:046
3904668993937,2cyclictest146040-21kworker/u16:1+events_unbound22:27:246
390419823929,7sleep60-21swapper/619:00:396
3904668993836,2cyclictest62875-21kworker/u16:4+events_unbound22:06:046
3904668993836,2cyclictest4186003-21kworker/u16:0+events_unbound21:40:596
3904668993836,2cyclictest4138081-21kworker/u16:3+events_unbound21:21:406
3904668993836,2cyclictest299854-21kworker/u16:1+events_unbound23:32:236
38952722383,30sleep70-21swapper/718:57:597
3904670993735,1cyclictest64250-21ssh21:52:587
3904668993735,2cyclictest62875-21kworker/u16:4+events_unbound21:56:186
3904668993735,2cyclictest4089870-21kworker/u16:2+events_unbound21:24:116
3904668993735,2cyclictest267077-21kworker/u16:0+events_unbound00:05:386
3904666993735,2cyclictest62875-21kworker/u16:4+flush-8:022:02:515
3904670993631,4cyclictest4185595-21latency_hist21:22:567
3904668993634,2cyclictest62875-21kworker/u16:4+events_unbound22:31:166
3904668993634,2cyclictest4138081-21kworker/u16:3+events_unbound21:33:556
3904668993634,2cyclictest4138081-21kworker/u16:3+events_unbound21:09:086
3904668993634,2cyclictest299854-21kworker/u16:1+events_unbound00:29:366
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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