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2026-03-18 - 11:30
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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 Wed Mar 18, 2026 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25596422231174,45sleep30-21swapper/319:09:133
25574762230171,18sleep20-21swapper/219:05:582
25576012221168,17sleep60-21swapper/619:07:486
25575582221167,17sleep10-21swapper/119:07:111
25595832220164,19sleep00-21swapper/019:08:230
25574142210181,19sleep50-21swapper/519:05:065
25575432206179,17sleep40-21swapper/419:06:584
25575552205175,19sleep70-21swapper/719:07:097
2559940995353,0cyclictest0-21swapper/323:28:043
255994899460,0cyclictest0-21swapper/622:50:026
2559937993527,7cyclictest681-21dbus-daemon19:15:002
255994299340,33cyclictest681-21dbus-daemon19:15:014
2559937993426,5cyclictest0-21swapper/221:15:022
255993799340,33cyclictest0-21swapper/222:05:022
2559951993333,0cyclictest0-21swapper/720:50:007
2559951993229,2cyclictest16450irq/4-ttyS020:10:017
255994699320,31cyclictest2601394-21sh20:25:005
255995199317,24cyclictest0-21swapper/722:44:477
2559948993129,1cyclictest2595790-21apt-config20:15:016
2559948993127,3cyclictest2641766-21idleruntime-cro21:40:026
2559942993127,3cyclictest0-21swapper/423:38:034
255994299310,30cyclictest2660879-21turbostat.cron22:15:024
255994299310,0cyclictest0-21swapper/423:03:014
2559940993127,3cyclictest369-21systemd-journal00:30:003
255994099310,30cyclictest369-21systemd-journal23:40:003
255993099310,30cyclictest369-21systemd-journal19:15:010
255994699300,2cyclictest2633703-21sh21:25:025
2559942993025,4cyclictest0-21swapper/421:43:014
255994099300,2cyclictest698-21in:imuxsock22:25:013
2559937993026,3cyclictest0-21swapper/221:43:002
255993799300,29cyclictest2718315-21munin-run00:00:012
255993799300,29cyclictest0-21swapper/223:13:022
255993599300,29cyclictest2699176-21latency_hist23:25:001
2559951992926,2cyclictest2568830-21sh19:25:007
255995199290,28cyclictest0-21swapper/722:28:017
255995199290,1cyclictest0-21swapper/721:20:027
255994899290,28cyclictest681-21dbus-daemon23:10:016
255994899290,28cyclictest1-21systemd22:45:016
255994899290,28cyclictest0-21swapper/622:28:016
255994899290,28cyclictest0-21swapper/621:08:046
255994899290,28cyclictest0-21swapper/619:53:016
255994899290,1cyclictest0-21swapper/621:53:026
2559946992927,1cyclictest278-21plymouthd21:05:015
2559946992927,1cyclictest2737418-21sh00:35:015
2559946992927,1cyclictest0-21swapper/520:53:025
2559946992927,1cyclictest0-21swapper/520:53:015
255994699290,28cyclictest0-21swapper/520:48:015
255994699290,1cyclictest2688143-21sh23:05:015
255994299290,28cyclictest0-21swapper/423:13:024
255994299290,28cyclictest0-21swapper/421:25:024
255994299290,28cyclictest0-21swapper/420:58:034
255994299290,28cyclictest0-21swapper/420:58:034
255994299290,28cyclictest0-21swapper/420:30:004
255994299290,28cyclictest0-21swapper/400:35:014
255994299290,28cyclictest0-21swapper/400:18:004
2559940992928,0cyclictest0-21swapper/322:18:043
2559940992927,1cyclictest278-21plymouthd23:55:013
2559940992927,1cyclictest2693778-21idleruntime-cro23:15:003
2559940992927,1cyclictest2585599-21apt-get19:58:023
2559940992927,1cyclictest0-21swapper/300:15:013
255994099290,28cyclictest0-21swapper/323:58:023
255994099290,28cyclictest0-21swapper/320:38:033
255994099290,28cyclictest0-21swapper/319:30:013
255994099290,1cyclictest2618165-21apt-get20:58:033
255994099290,1cyclictest2618165-21apt-get20:58:033
2559937992927,1cyclictest0-21swapper/221:03:032
2559937992927,1cyclictest0-21swapper/220:13:032
255993799290,28cyclictest0-21swapper/200:18:012
255993799290,1cyclictest2660864-21cron22:15:022
2559935992927,1cyclictest369-21systemd-journal22:30:021
255993599290,1cyclictest0-21swapper/120:48:011
255993099290,28cyclictest0-21swapper/023:28:030
255993099290,28cyclictest0-21swapper/020:13:020
255993099290,28cyclictest0-21swapper/020:08:030
255993099290,1cyclictest2569457-21apt-get19:28:020
2559951992827,1cyclictest0-21swapper/700:20:017
255995199280,27cyclictest0-21swapper/720:23:037
2559948992826,1cyclictest2691716-21apt-get23:13:026
2559946992827,1cyclictest0-21swapper/522:53:025
2559946992827,1cyclictest0-21swapper/500:25:015
2559946992826,1cyclictest0-21swapper/521:38:035
255994699280,28cyclictest0-21swapper/500:30:015
255994699280,1cyclictest2566769-21apt-get19:23:025
2559942992827,1cyclictest1-21systemd00:00:004
2559942992827,1cyclictest0-21swapper/421:58:014
2559942992827,1cyclictest0-21swapper/419:15:024
2559940992826,1cyclictest2582910-21apt-get19:53:013
2559940992826,1cyclictest0-21swapper/300:03:013
2559937992825,2cyclictest0-21swapper/200:28:032
2559937992824,3cyclictest2679860-21apt-config22:50:022
255993799280,0cyclictest0-21swapper/200:35:012
2559935992827,1cyclictest2652523-21cron22:00:021
2559935992827,1cyclictest2645099-21apt-get21:48:011
2559935992827,1cyclictest0-21swapper/123:28:041
255993599280,28cyclictest0-21swapper/122:23:011
255993599280,28cyclictest0-21swapper/120:20:011
255993599280,28cyclictest0-21swapper/119:15:011
255993599280,1cyclictest0-21swapper/100:08:021
2559930992826,1cyclictest0-21swapper/023:25:000
255993099280,28cyclictest0-21swapper/022:53:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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