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2026-04-18 - 11:42
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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 Sat Apr 18, 2026 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2828622235175,19sleep70-21swapper/719:06:047
2829332233173,19sleep40-21swapper/419:07:054
2829072226171,18sleep50-21swapper/519:06:415
2850672219166,18sleep10-21swapper/119:09:511
2828952212183,19sleep20-21swapper/219:06:312
2849972210180,19sleep60-21swapper/619:08:516
2849942209181,18sleep30-21swapper/319:08:493
2828462209182,17sleep00-21swapper/019:05:480
285483993534,1cyclictest1-21systemd19:30:022
285490993228,3cyclictest395445-21dump-pmu-power22:30:004
28548699320,4cyclictest278-21plymouthd19:50:013
285479993229,2cyclictest369-21systemd-journal22:50:011
28550199312,1cyclictest16450irq/4-ttyS020:20:007
28548699310,30cyclictest0-21swapper/321:52:583
28548699310,30cyclictest0-21swapper/319:57:573
285483993128,2cyclictest321948-21cut20:15:002
28547799310,30cyclictest1-21systemd23:30:020
28547799310,30cyclictest0-21swapper/019:15:020
28550199300,2cyclictest318689-21sh20:10:017
28550199300,1cyclictest0-21swapper/723:37:587
285496993028,1cyclictest455580-21apt-get00:22:596
28549699300,29cyclictest441455-21latency_hist23:55:026
28549699300,29cyclictest403521-21latency_hist22:45:006
28549699300,29cyclictest343438-21sh20:55:016
285490993028,1cyclictest0-21swapper/421:50:014
28548699300,2cyclictest0-21swapper/320:47:583
28548699300,29cyclictest321414-21awk20:15:013
28548699300,29cyclictest0-21swapper/321:22:583
285477993028,1cyclictest0-21swapper/000:10:020
285501992928,1cyclictest354888-21apt-get21:17:577
285501992928,1cyclictest0-21swapper/722:20:017
285501992927,1cyclictest450183-21apt-get00:12:577
28550199290,0cyclictest0-21swapper/722:52:577
285496992927,1cyclictest291588-21apt-config19:20:026
28549699290,28cyclictest303174-21apt-get19:42:586
28549699290,28cyclictest0-21swapper/621:47:576
28549699290,1cyclictest313303-21apt20:00:006
285494992927,1cyclictest330347-21apt-get20:32:575
285494992927,1cyclictest289437-21apt-get19:17:585
28549499290,29cyclictest0-21swapper/522:05:005
28549499290,28cyclictest373999-21apt-get21:52:585
28549499290,28cyclictest0-21swapper/519:57:565
28549499290,28cyclictest0-21swapper/519:32:575
28549499290,1cyclictest463641-21apt-get00:37:595
28549099290,28cyclictest0-21swapper/423:52:584
28549099290,1cyclictest278-21plymouthd20:20:014
285486992927,1cyclictest297781-21apt-get19:32:593
285486992927,1cyclictest0-21swapper/321:17:583
285486992923,5cyclictest354261-21sh21:15:013
28548699290,28cyclictest1-21systemd23:35:023
28548699290,28cyclictest0-21swapper/322:10:003
28548699290,28cyclictest0-21swapper/320:52:573
28548699290,26cyclictest390355-21packagekitd22:20:023
285483992928,1cyclictest0-21swapper/220:02:582
28548399290,29cyclictest0-21swapper/221:32:582
28548399290,28cyclictest0-21swapper/223:57:572
28548399290,28cyclictest0-21swapper/222:07:552
28547999290,28cyclictest0-21swapper/100:32:591
28547999290,28cyclictest0-21swapper/100:07:581
285477992926,2cyclictest369-21systemd-journal22:05:010
285477992926,2cyclictest369-21systemd-journal21:55:000
28547799290,28cyclictest0-21swapper/023:42:580
28547799290,28cyclictest0-21swapper/020:12:580
28547799290,1cyclictest0-21swapper/020:30:010
28547799290,1cyclictest0-21swapper/020:05:010
285501992827,1cyclictest308545-21apt-get19:52:567
285501992827,1cyclictest0-21swapper/719:22:587
285501992826,1cyclictest365296-21sh21:35:007
285501992826,1cyclictest0-21swapper/720:15:017
28550199280,28cyclictest0-21swapper/723:57:577
285496992827,1cyclictest0-21swapper/621:15:006
28549699280,27cyclictest0-21swapper/600:35:016
28549699280,0cyclictest0-21swapper/622:37:586
28549699280,0cyclictest0-21swapper/600:37:596
285494992827,1cyclictest0-21swapper/523:12:585
285494992827,1cyclictest0-21swapper/500:32:595
285494992826,1cyclictest294504-21awk19:25:025
28549499280,28cyclictest417236-21apt23:10:005
28549499280,28cyclictest0-21swapper/522:30:015
28549499280,1cyclictest0-21swapper/500:10:025
285490992827,1cyclictest417234-21latency_hist23:10:004
285490992826,1cyclictest452247-21sh00:15:024
28549099280,27cyclictest0-21swapper/421:12:574
28549099280,0cyclictest401455-21apt-get22:42:574
285486992827,1cyclictest0-21swapper/323:57:573
285486992826,1cyclictest0-21swapper/319:22:583
285483992828,0cyclictest0-21swapper/219:22:572
285483992827,1cyclictest0-21swapper/200:12:562
28548399280,28cyclictest389991-21awk22:20:022
28548399280,28cyclictest0-21swapper/223:00:032
28548399280,28cyclictest0-21swapper/222:12:572
28548399280,28cyclictest0-21swapper/221:52:582
28548399280,28cyclictest0-21swapper/221:50:002
285479992827,1cyclictest278-21plymouthd20:45:011
285479992824,3cyclictest299847-21idleruntime-cro19:35:021
28547999280,28cyclictest0-21swapper/120:00:011
28547999280,27cyclictest0-21swapper/100:00:001
28547999280,0cyclictest0-21swapper/122:37:571
285477992827,1cyclictest1-21systemd22:35:010
28547799280,27cyclictest0-21swapper/000:12:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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