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2025-12-07 - 19:05
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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 Dec 07, 2025 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1121423995148,2cyclictest1731019-21kworker/u16:4+flush-8:020:47:456
1121423995148,2cyclictest1629815-21kworker/u16:1+events_unbound19:32:466
1121417995148,2cyclictest1315770-21kworker/u16:5+flush-8:017:12:464
1121423995047,2cyclictest1307683-21kworker/u16:3+flush-8:018:07:476
1121423995045,2cyclictest1713840-21kworker/u16:0+flush-8:020:22:596
112108425028,7sleep60-21swapper/615:22:066
1121417994845,2cyclictest1131148-21kworker/u16:0+flush-8:015:32:314
1121417994745,2cyclictest1091106-21kworker/u16:4+flush-8:015:48:014
1121417994744,2cyclictest1307683-21kworker/u16:3+events_unbound17:17:574
112086524611,30sleep70-21swapper/715:19:027
1121417994442,2cyclictest1296466-21kworker/u16:2+events_unbound17:09:454
1121417994441,2cyclictest1307683-21kworker/u16:3+events_unbound18:29:454
1121423994341,2cyclictest1296466-21kworker/u16:2+flush-8:017:53:016
1121417994341,2cyclictest1315770-21kworker/u16:5+events_unbound17:37:594
1121417994240,2cyclictest1542876-21kworker/u16:5+flush-8:018:52:594
1121417994240,2cyclictest1437055-21kworker/u16:4+events_unbound18:36:454
1121417994240,2cyclictest1131148-21kworker/u16:0+events_unbound15:32:494
1121425994134,5cyclictest1771386-21latency_hist20:42:317
1121423994139,2cyclictest1307683-21kworker/u16:3+events_unbound18:06:476
1121423994138,2cyclictest1307683-21kworker/u16:3+events_unbound18:13:026
1121417994139,2cyclictest1629815-21kworker/u16:1+events_unbound19:42:564
1121417994139,2cyclictest1437055-21kworker/u16:4+events_unbound18:03:024
1121417994139,2cyclictest1296466-21kworker/u16:2+flush-8:017:24:454
1121417994038,2cyclictest1507717-21kworker/u16:1+events_unbound19:08:014
1121417994038,2cyclictest1091106-21kworker/u16:4+flush-8:016:02:594
112108224030,7sleep40-21swapper/415:22:044
1121423993937,2cyclictest1731019-21kworker/u16:4+events_unbound20:32:566
1121423993937,2cyclictest1477365-21kworker/u16:2+flush-8:018:27:586
1121423993937,2cyclictest1422655-21kworker/u16:0+events_unbound17:50:476
1121423993936,2cyclictest1286291-21kworker/u16:0+events_unbound16:52:396
1121417993937,2cyclictest1680863-21kworker/u16:2+events_unbound20:12:484
1121417993937,2cyclictest1629815-21kworker/u16:1+events_unbound19:33:414
1121417993937,2cyclictest1477365-21kworker/u16:2+events_unbound18:44:454
1121417993937,2cyclictest1437055-21kworker/u16:4+events_unbound19:39:424
1121417993937,2cyclictest1307683-21kworker/u16:3+flush-8:018:12:594
1121417993937,2cyclictest1296466-21kworker/u16:2+events_unbound17:31:134
1121417993937,2cyclictest1266218-21kworker/u16:3+events_unbound16:33:474
1121417993937,2cyclictest1131149-21kworker/u16:2+events_unbound15:42:254
1121417993936,2cyclictest1307683-21kworker/u16:3+flush-8:018:07:504
1121417993936,2cyclictest1215797-21kworker/u16:0+flush-8:016:23:004
1121417993936,2cyclictest1183334-21kworker/u16:5+events_unbound16:27:484
1121423993836,2cyclictest1713840-21kworker/u16:0+events_unbound20:22:136
1121423993836,2cyclictest1680863-21kworker/u16:2+flush-8:020:07:566
1121423993836,2cyclictest1361899-21kworker/u16:0+flush-8:017:18:096
1121423993836,2cyclictest1236022-21kworker/u16:1+events_unbound16:38:016
1121423993835,2cyclictest1437055-21kworker/u16:4+events_unbound18:57:596
1121423993835,2cyclictest1315770-21kworker/u16:5+events_unbound17:16:456
1121417993836,2cyclictest1731019-21kworker/u16:4+flush-8:020:47:554
1121417993836,2cyclictest1155308-21kworker/u16:1+events_unbound15:52:574
112108323827,8sleep50-21swapper/515:22:055
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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