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2025-12-18 - 21:10
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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 Thu Dec 18, 2025 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
390297425241,8sleep40-21swapper/407:06:124
390292624837,8sleep50-21swapper/507:05:335
390303324613,29sleep70-21swapper/707:07:037
3903504994135,5cyclictest4004548-21latency_hist07:59:367
390321823525,7sleep60-21swapper/607:09:356
3903504993428,5cyclictest152018-21latency_hist10:54:357
3903504993428,5cyclictest152018-21latency_hist10:54:357
3903504993325,7cyclictest220175-21latency_hist11:29:357
3903499993028,2cyclictest4180204-21kworker/u16:4+events_unbound10:42:455
3903499992927,2cyclictest3985147-21kworker/u16:1+events_unbound08:10:055
3903494992927,2cyclictest2429023-21kworker/u16:3+flush-8:008:19:354
3903499992826,2cyclictest4072728-21kworker/u16:1+events_unbound09:48:115
3903499992826,2cyclictest4062612-21kworker/u16:0+events_unbound08:26:555
3903499992826,2cyclictest4062612-21kworker/u16:0+events_unbound08:26:555
3903499992826,2cyclictest2429023-21kworker/u16:3+events_unbound07:19:365
3903494992826,2cyclictest4014480-21kworker/u16:4+flush-8:008:49:364
3903494992826,2cyclictest3946485-21kworker/u16:2+events_unbound07:39:594
3903499992725,2cyclictest4179857-21kworker/u16:2+events_unbound10:00:055
3903499992725,2cyclictest4179857-21kworker/u16:2+events_unbound10:00:055
3903499992725,2cyclictest4072728-21kworker/u16:1+events_unbound08:48:455
3903499992725,2cyclictest3946485-21kworker/u16:2+events_unbound08:00:545
3903499992724,2cyclictest4122717-21kworker/u16:0+flush-8:009:19:365
3903499992724,2cyclictest160592-21kworker/u16:3+events_unbound10:59:455
3903494992724,2cyclictest152399-21kworker/u16:0+events_unbound11:04:584
3903504992620,5cyclictest3985114-21latency_hist07:49:367
3903499992624,2cyclictest4180204-21kworker/u16:4+events_unbound10:36:475
3903499992624,2cyclictest225494-21kworker/u16:3+events_unbound12:18:215
3903499992624,2cyclictest103543-21kworker/u16:3+events_unbound10:30:035
3903499992623,2cyclictest4180204-21kworker/u16:4+flush-8:010:24:465
3903499992623,2cyclictest249385-21kworker/u16:4+events_unbound12:34:365
3903494992624,2cyclictest4180204-21kworker/u16:4+flush-8:011:04:354
3903494992523,2cyclictest84144-21kworker/u16:1+events_unbound10:19:574
3903494992523,2cyclictest180243-21kworker/u16:1+events_unbound11:34:544
3903499992422,2cyclictest3946485-21kworker/u16:2+events_unbound07:56:545
3903499992422,2cyclictest3927997-21kworker/u16:0+events_unbound07:25:105
3903499992422,2cyclictest34294-21kworker/u16:5+events_unbound09:54:385
3903499992422,2cyclictest307314-21kworker/u16:2+events_unbound12:28:055
3903499992422,2cyclictest307314-21kworker/u16:2+events_unbound12:28:055
3903494992422,2cyclictest3884940-21kworker/u16:5+events_unbound07:14:494
3903504992318,4cyclictest650-21systemd-journal09:19:307
3903504992318,4cyclictest3994842-21latency_hist07:54:367
390350499230,21cyclictest200698-21latency_hist11:19:357
3903499992321,2cyclictest4111776-21kworker/u16:5+events_unbound09:01:505
3903499992321,2cyclictest249385-21kworker/u16:4+flush-8:011:53:015
3903494992321,2cyclictest4014480-21kworker/u16:4+flush-8:008:20:034
3903494992321,2cyclictest15855-21kworker/u16:0+events_unbound09:45:064
3903499992220,2cyclictest54664-21kworker/u16:0+events_unbound10:07:585
3903499992220,2cyclictest4179857-21kworker/u16:2+events_unbound10:57:465
3903499992220,2cyclictest4072728-21kworker/u16:1+events_unbound09:12:025
3903499992220,2cyclictest225494-21kworker/u16:3+flush-8:011:55:045
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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