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2026-04-10 - 12:01
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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 Fri Apr 10, 2026 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21723532227172,18sleep10-21swapper/119:07:051
21744542220189,20sleep70-21swapper/719:09:287
21744892215185,19sleep30-21swapper/319:09:563
21723942212182,19sleep60-21swapper/619:07:416
21723832212185,17sleep40-21swapper/419:07:324
21723932208178,19sleep50-21swapper/519:07:405
21722222208179,19sleep20-21swapper/219:05:132
21723052205174,20sleep00-21swapper/019:06:240
217472699420,41cyclictest0-21swapper/421:55:574
217472199355,29cyclictest2237982-21sh21:05:013
217472199330,3cyclictest1-21systemd21:55:013
217472899310,30cyclictest2314197-21basename23:25:025
217472899310,30cyclictest2270569-21dump-pmu-power22:05:005
217471599310,30cyclictest2232591-21idleruntime-cro20:55:012
217471299312,28cyclictest0-21swapper/123:17:591
2174734993028,1cyclictest278-21plymouthd22:30:017
217473299300,29cyclictest1-21systemd20:25:006
217473299300,29cyclictest0-21swapper/600:20:026
217472899300,29cyclictest2199510-21sh19:55:025
217472899300,29cyclictest1-21systemd23:40:025
217472199300,30cyclictest2202448-21sh20:00:013
217472199300,29cyclictest0-21swapper/320:43:003
217472199300,1cyclictest2352281-21systemd-run00:35:013
217471599300,29cyclictest0-21swapper/222:47:592
217471299300,29cyclictest2316856-21turbostat.cron23:30:021
2174709993027,2cyclictest0-21swapper/020:55:010
217470999300,29cyclictest2273253-21turbostat.cron22:10:010
217473499290,2cyclictest2297774-21awk22:55:017
217473499290,28cyclictest2232595-21sh20:55:017
217473499290,28cyclictest0-21swapper/723:17:597
217473499290,28cyclictest0-21swapper/722:33:017
217473499290,28cyclictest0-21swapper/722:33:017
217473499290,28cyclictest0-21swapper/700:32:557
217473499290,1cyclictest2314788-21apt-get23:27:597
217473499290,1cyclictest2222454-21apt-get20:38:007
217473499290,1cyclictest0-21swapper/721:18:017
2174732992928,1cyclictest0-21swapper/600:02:596
2174732992927,1cyclictest2346860-21apt00:25:026
2174732992927,1cyclictest0-21swapper/622:17:586
217473299290,28cyclictest0-21swapper/622:58:006
217473299290,28cyclictest0-21swapper/600:28:016
2174728992928,1cyclictest0-21swapper/520:20:015
2174728992927,1cyclictest2255021-21apt-get21:38:005
2174728992927,1cyclictest2238612-21apt-get21:07:595
2174728992927,1cyclictest0-21swapper/523:59:595
217472899290,28cyclictest278-21plymouthd19:40:025
217472899290,28cyclictest0-21swapper/522:53:025
217472899290,28cyclictest0-21swapper/521:30:015
2174726992927,1cyclictest0-21swapper/422:55:024
217472699290,29cyclictest698-21in:imuxsock23:55:024
217472699290,28cyclictest0-21swapper/421:47:594
217472699290,28cyclictest0-21swapper/421:07:584
217472699290,28cyclictest0-21swapper/420:27:584
217472699290,1cyclictest2339393-21apt-get00:12:594
217472199290,28cyclictest0-21swapper/322:07:593
217472199290,28cyclictest0-21swapper/321:42:593
217472199290,1cyclictest0-21swapper/322:13:003
2174715992927,1cyclictest2278642-21munin-run22:20:012
2174715992927,1cyclictest2273251-21latency_hist22:10:012
2174715992927,1cyclictest0-21swapper/220:57:592
217471599290,28cyclictest2334019-21apt-get00:02:572
217471599290,28cyclictest0-21swapper/223:42:592
217471599290,28cyclictest0-21swapper/223:23:012
217471599290,28cyclictest0-21swapper/221:57:582
217471599290,28cyclictest0-21swapper/221:23:002
2174712992928,1cyclictest0-21swapper/123:00:001
2174709992927,1cyclictest0-21swapper/000:37:580
217470999290,28cyclictest0-21swapper/023:23:010
217470999290,28cyclictest0-21swapper/020:58:000
217470999290,28cyclictest0-21swapper/019:15:020
217470999290,28cyclictest0-21swapper/000:02:590
2174734992828,0cyclictest0-21swapper/721:57:587
2174734992827,1cyclictest0-21swapper/723:12:597
2174734992827,0cyclictest0-21swapper/723:23:007
2174734992826,1cyclictest0-21swapper/720:33:017
217473499280,28cyclictest2331202-21apt-get23:58:007
217473499280,0cyclictest0-21swapper/721:38:007
2174732992827,1cyclictest1-21systemd23:20:026
2174732992827,1cyclictest0-21swapper/621:23:016
217473299280,28cyclictest0-21swapper/619:17:596
2174728992826,1cyclictest2322872-21apt-get23:43:005
217472899280,27cyclictest0-21swapper/522:40:015
217472899280,27cyclictest0-21swapper/522:00:005
217472899280,27cyclictest0-21swapper/519:43:005
2174726992827,1cyclictest2243618-21sh21:15:004
2174726992827,1cyclictest0-21swapper/421:30:014
2174726992827,1cyclictest0-21swapper/419:25:024
2174726992826,1cyclictest2336709-21apt-get00:07:594
217472699280,28cyclictest1-21systemd20:15:014
217472699280,0cyclictest0-21swapper/423:57:594
2174721992828,0cyclictest0-21swapper/300:22:593
2174721992825,2cyclictest2210795-21turbostat.cron20:15:013
217472199280,28cyclictest0-21swapper/321:50:013
217472199280,28cyclictest0-21swapper/319:35:023
217472199280,1cyclictest0-21swapper/321:28:003
2174715992827,1cyclictest278-21plymouthd19:15:022
217471599280,28cyclictest0-21swapper/223:58:012
217471599280,0cyclictest0-21swapper/222:30:012
2174712992827,1cyclictest33-21ksoftirqd/119:40:021
217471299280,28cyclictest1-21systemd00:25:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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