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2026-05-06 - 05:06
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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 May 06, 2026 00:43:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
415840925948,8sleep40-21swapper/419:05:164
41585072403,31sleep70-21swapper/719:06:397
414943024029,7sleep50-21swapper/519:03:485
4158943993836,2cyclictest3894294-21kworker/u16:2+flush-8:019:13:515
415834023523,8sleep60-21swapper/619:04:216
4158943993432,2cyclictest369796-21kworker/u16:0+events_unbound23:08:585
4158948993230,2cyclictest551527-21kworker/u16:1+flush-8:000:13:516
4158943993227,4cyclictest369796-21kworker/u16:0+flush-8:022:23:365
4158943993028,2cyclictest171525-21kworker/u16:1+flush-8:021:33:365
4158948992927,2cyclictest369796-21kworker/u16:0+events_unbound23:42:436
4158935992925,3cyclictest133907-21kworker/u16:3+events_unbound20:38:594
1175842290,1chrt0-21swapper/720:23:547
4158948992826,2cyclictest321346-21kworker/u16:4+events_unbound23:14:486
4158935992826,2cyclictest4139835-21kworker/u16:0+events_unbound19:09:034
4158948992725,2cyclictest4191822-21kworker/u16:1+events_unbound20:00:196
4158948992725,2cyclictest321346-21kworker/u16:4+events_unbound22:19:436
4158948992725,2cyclictest265507-21kworker/u16:3+flush-8:022:48:516
4158948992725,2cyclictest265507-21kworker/u16:3+flush-8:022:13:356
4158943992725,2cyclictest265507-21kworker/u16:3+flush-8:021:58:305
4158935992725,2cyclictest85075-21kworker/u16:0+flush-8:020:43:544
4158952992619,6cyclictest635-21systemd-journal23:48:367
4158948992624,2cyclictest501545-21kworker/u16:1+events_unbound23:19:276
4158948992624,2cyclictest4191822-21kworker/u16:1+flush-8:019:30:356
4158948992624,2cyclictest4086117-21kworker/u16:3+events_unbound19:45:396
4158943992624,2cyclictest265507-21kworker/u16:3+flush-8:022:48:505
4158952992518,6cyclictest369805-21latency_hist22:18:367
4158948992523,2cyclictest3894294-21kworker/u16:2+flush-8:019:25:076
4158948992523,2cyclictest321346-21kworker/u16:4+events_unbound22:02:396
4158948992523,2cyclictest133907-21kworker/u16:3+events_unbound20:47:116
4158935992523,2cyclictest321346-21kworker/u16:4+flush-8:022:53:524
4158952992418,5cyclictest635-21systemd-journal19:43:367
4158948992422,2cyclictest85075-21kworker/u16:0+events_unbound20:41:316
4158948992422,2cyclictest3894294-21kworker/u16:2+events_unbound19:17:026
4158948992422,2cyclictest369796-21kworker/u16:0+events_unbound22:59:006
4158948992422,2cyclictest265507-21kworker/u16:3+events_unbound22:08:136
4158948992422,2cyclictest171525-21kworker/u16:1+events_unbound21:32:576
4158948992422,2cyclictest171525-21kworker/u16:1+events_unbound21:05:436
4158948992422,2cyclictest113863-21kworker/u16:2+events_unbound21:14:426
4158948992422,2cyclictest113863-21kworker/u16:2+events_unbound21:01:076
4158948992321,2cyclictest4191822-21kworker/u16:1+flush-8:020:20:356
4158948992321,2cyclictest4191822-21kworker/u16:1+flush-8:019:42:116
4158948992321,2cyclictest3894294-21kworker/u16:2+flush-8:019:53:376
4158948992321,2cyclictest369796-21kworker/u16:0+events_unbound22:24:406
4158948992321,2cyclictest265507-21kworker/u16:3+events_unbound23:05:276
4158948992321,2cyclictest113863-21kworker/u16:2+events_unbound21:10:156
4158948992321,2cyclictest113863-21kworker/u16:2+events_unbound20:56:086
4158948992320,2cyclictest85075-21kworker/u16:0+events_unbound20:13:466
4158943992321,2cyclictest369796-21kworker/u16:0+events_unbound00:03:535
4158943992321,2cyclictest321346-21kworker/u16:4+flush-8:023:14:135
4158943992320,3cyclictest321346-21kworker/u16:4+flush-8:022:04:485
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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