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2025-12-14 - 09:10
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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 14, 2025 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8253452427,30sleep70-21swapper/719:04:587
626589400,33rtkit-daemon0-21swapper/619:05:296
834907993731,5cyclictest1062409-21latency_hist21:04:537
83490799370,35cyclictest926180-21latency_hist19:54:537
83446823727,7sleep50-21swapper/519:07:535
834906993331,2cyclictest1335404-21kworker/u16:4+flush-8:023:25:086
834906993331,2cyclictest1043290-21kworker/u16:2+flush-8:021:40:076
83490799320,30cyclictest1315584-21latency_hist23:14:527
83490799320,30cyclictest1315584-21latency_hist23:14:527
834906993230,2cyclictest824604-21kworker/u16:2+flush-8:019:10:036
834901993229,2cyclictest834297-21kworker/u16:3+events_unbound19:14:555
834907993125,5cyclictest1130558-21latency_hist21:39:537
834906993028,2cyclictest1383486-21kworker/u16:0+events_unbound23:50:056
834907992923,5cyclictest965100-21latency_hist20:14:537
834906992927,2cyclictest1335404-21kworker/u16:4+flush-8:000:35:076
834906992826,2cyclictest1335404-21kworker/u16:4+flush-8:000:05:086
834906992826,2cyclictest1208828-21kworker/u16:4+events_unbound22:55:066
83440222818,7sleep40-21swapper/419:06:564
834906992725,2cyclictest1392662-21kworker/u16:1+events_unbound00:00:056
834906992725,2cyclictest1392662-21kworker/u16:1+events_unbound00:00:056
834901992725,2cyclictest1354585-21kworker/u16:3+flush-8:023:50:175
834897992725,2cyclictest848734-21kworker/u16:0+flush-8:020:49:534
834897992725,2cyclictest848734-21kworker/u16:0+flush-8:020:49:534
83490799260,24cyclictest1305877-21latency_hist23:09:527
834906992624,2cyclictest1208828-21kworker/u16:4+events_unbound23:00:076
834897992624,2cyclictest542004-21kworker/u16:8+events_unbound21:08:144
834906992523,2cyclictest848734-21kworker/u16:0+events_unbound20:25:066
834897992523,2cyclictest1266154-21kworker/u16:0+flush-8:023:32:144
834897992523,2cyclictest1062637-21kworker/u16:3+flush-8:021:40:184
834906992422,2cyclictest1266154-21kworker/u16:0+events_unbound23:40:076
834901992422,2cyclictest1062637-21kworker/u16:3+flush-8:021:14:535
834897992422,2cyclictest1179013-21kworker/u16:2+flush-8:023:15:144
834907992320,1cyclictest1403167-21munin-run23:59:527
834906992321,2cyclictest1043290-21kworker/u16:2+events_unbound21:20:076
834897992321,2cyclictest995158-21kworker/u16:3+flush-8:020:50:224
834897992321,2cyclictest1208423-21kworker/u16:3+flush-8:022:23:384
834897992321,2cyclictest1074298-21kworker/u16:1+events_unbound21:58:144
834897992320,2cyclictest542004-21kworker/u16:8+events_unbound20:24:554
834906992220,2cyclictest1208828-21kworker/u16:4+events_unbound22:25:046
834897992220,2cyclictest1335404-21kworker/u16:4+events_unbound23:44:524
834897992220,2cyclictest1286183-21kworker/u16:1+flush-8:023:25:144
834897992220,2cyclictest1062637-21kworker/u16:3+events_unbound21:35:594
834897992119,2cyclictest542004-21kworker/u16:8+events_unbound19:39:504
834897992119,2cyclictest1208423-21kworker/u16:3+events_unbound22:41:154
834897992118,2cyclictest123314-21kworker/u16:1+events_unbound21:00:034
834897992019,1cyclictest542004-21kworker/u16:8+flush-8:020:10:154
834897992018,2cyclictest848734-21kworker/u16:0+flush-8:019:52:154
834897992018,2cyclictest1286183-21kworker/u16:1+flush-8:023:03:134
834897992018,2cyclictest1111553-21kworker/u16:0+flush-8:022:13:134
834906991917,2cyclictest1286183-21kworker/u16:1+events_unbound23:15:046
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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