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2026-04-19 - 07:56
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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 100 highest latencies:
System rack8slot4.osadl.org (updated Sun Apr 19, 2026 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37226942239176,20sleep40-21swapper/419:06:024
37248672232174,19sleep70-21swapper/719:09:257
37248832225171,17sleep50-21swapper/519:09:405
37248912220168,17sleep30-21swapper/319:09:473
37249012215158,18sleep20-21swapper/219:09:542
37226872211181,19sleep60-21swapper/619:05:566
37248792209182,17sleep10-21swapper/119:09:361
37226522209180,19sleep00-21swapper/019:05:250
372512799490,25cyclictest0-21swapper/119:30:141
372513299370,36cyclictest3782598-21sh20:55:012
3725127993734,2cyclictest3727889-21cat19:15:021
3725149993528,3cyclictest369-21systemd-journal19:55:027
372513299350,2cyclictest1-21systemd21:50:012
3725127993533,1cyclictest76350irq/124-eno119:17:581
3725149993227,1cyclictest3786197-21apt-get21:02:597
372514999320,29cyclictest3834051-21munin-run22:30:017
372514999320,28cyclictest3894736-21apt-get00:22:567
372514799321,30cyclictest681-21dbus-daemon20:05:026
3725137993129,1cyclictest3786197-21apt-get21:02:593
3725143993028,1cyclictest3886395-21apt-get00:07:595
372514399300,29cyclictest3893833-21latency_hist00:20:025
372514199300,29cyclictest3793639-21idleruntime-cro21:15:014
3725137993028,1cyclictest0-21swapper/323:35:013
3725137993028,1cyclictest0-21swapper/323:35:013
372513799300,29cyclictest0-21swapper/300:30:023
372513799300,29cyclictest0-21swapper/300:15:013
3725127993027,2cyclictest3769086-21sh20:30:021
372512799300,29cyclictest3755632-21debian-sa120:05:021
3725149992927,1cyclictest278-21plymouthd22:40:017
3725149992927,1cyclictest0-21swapper/723:00:027
372514999290,29cyclictest0-21swapper/722:10:017
372514999290,28cyclictest3872900-21apt-get23:42:587
372514999290,28cyclictest0-21swapper/722:02:587
372514999290,28cyclictest0-21swapper/721:50:007
372514999290,1cyclictest3780538-21apt-get20:52:587
372514999290,1cyclictest3767024-21apt-get20:27:567
372514999290,1cyclictest1-21systemd20:15:027
3725147992928,1cyclictest0-21swapper/622:17:566
3725147992927,1cyclictest3866618-21apt-get23:30:016
3725147992927,1cyclictest0-21swapper/620:37:566
372514799290,28cyclictest0-21swapper/620:50:026
372514799290,28cyclictest0-21swapper/600:27:586
372514799290,1cyclictest3878270-21apt-get23:52:566
372514799290,1cyclictest3820581-21dump-pmu-power22:05:016
3725143992927,1cyclictest3821203-21apt-get22:07:595
3725143992926,2cyclictest3863930-21sh23:25:015
372514399290,29cyclictest0-21swapper/522:25:005
372514399290,1cyclictest3815181-21latency_hist21:55:015
372514399290,1cyclictest0-21swapper/523:45:015
3725141992927,1cyclictest0-21swapper/400:17:584
372514199290,28cyclictest3805042-21http21:37:574
372514199290,28cyclictest3739826-21apt-get19:37:594
372514199290,28cyclictest0-21swapper/423:32:584
372514199290,28cyclictest0-21swapper/423:32:584
372514199290,28cyclictest0-21swapper/422:27:584
372514199290,28cyclictest0-21swapper/421:22:584
372514199290,28cyclictest0-21swapper/420:22:584
372514199290,28cyclictest0-21swapper/420:00:024
372514199290,1cyclictest3812496-21idleruntime-cro21:50:014
372514199290,1cyclictest0-21swapper/421:10:014
372514199290,1cyclictest0-21swapper/419:30:024
3725137992927,1cyclictest3861223-21latency_hist23:20:013
372513799290,28cyclictest0-21swapper/323:57:593
372513799290,28cyclictest0-21swapper/319:35:023
372513799290,28cyclictest0-21swapper/300:37:593
372513799290,28cyclictest0-21swapper/300:22:573
372513799290,1cyclictest0-21swapper/322:55:013
3725132992928,1cyclictest278-21plymouthd22:30:012
3725132992927,2cyclictest0-21swapper/200:22:572
3725132992927,1cyclictest3777850-21apt-get20:47:572
3725132992927,1cyclictest3745222-21apt-get19:47:572
3725132992927,1cyclictest0-21swapper/222:35:012
372513299290,28cyclictest3900114-21apt-get00:33:002
372513299290,28cyclictest3823890-21apt-get22:12:592
372513299290,28cyclictest0-21swapper/222:17:572
372513299290,28cyclictest0-21swapper/220:57:572
372513299290,28cyclictest0-21swapper/200:40:012
372513299290,1cyclictest0-21swapper/223:02:582
3725127992927,1cyclictest0-21swapper/123:30:021
3725127992927,1cyclictest0-21swapper/123:30:021
372512799290,28cyclictest3856467-21apt-get23:12:581
372512799290,28cyclictest3847531-21awk22:55:011
372512799290,28cyclictest0-21swapper/120:32:581
372512799290,28cyclictest0-21swapper/119:57:571
372512799290,1cyclictest0-21swapper/100:25:021
3725126992927,1cyclictest0-21swapper/019:30:160
372512699290,28cyclictest0-21swapper/022:17:560
372512699290,28cyclictest0-21swapper/021:12:590
372512699290,28cyclictest0-21swapper/020:37:560
372512699290,28cyclictest0-21swapper/019:52:580
372512699290,28cyclictest0-21swapper/019:25:020
372512699290,28cyclictest0-21swapper/019:12:580
372512699290,1cyclictest3839416-21sh22:40:010
372514999280,0cyclictest0-21swapper/722:22:597
3725147992827,1cyclictest0-21swapper/621:12:596
372514799280,1cyclictest0-21swapper/600:33:006
3725143992827,1cyclictest3842748-21apt-get22:47:565
3725143992827,1cyclictest0-21swapper/521:35:005
372514399280,27cyclictest0-21swapper/523:40:005
372514399280,27cyclictest0-21swapper/520:43:005
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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