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2026-01-07 - 15:18
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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 Jan 07, 2026 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27425512222167,17sleep70-21swapper/707:06:117
27425512222167,17sleep70-21swapper/707:06:117
27426522221192,19sleep60-21swapper/607:07:386
27426522221192,19sleep60-21swapper/607:07:386
27425552221191,19sleep20-21swapper/207:06:152
27425552221191,19sleep20-21swapper/207:06:152
27426562215184,19sleep10-21swapper/107:07:431
27426562215184,19sleep10-21swapper/107:07:421
27446872214186,18sleep50-21swapper/507:08:585
27446872214186,18sleep50-21swapper/507:08:585
27426792212180,21sleep00-21swapper/007:07:570
27426792212180,21sleep00-21swapper/007:07:570
27424882212184,18sleep30-21swapper/307:05:193
27424882212184,18sleep30-21swapper/307:05:193
27447152210179,20sleep40-21swapper/407:09:224
27447152210179,20sleep40-21swapper/407:09:214
2745014995911,24cyclictest0-21swapper/709:34:587
274501499523,24cyclictest0-21swapper/709:35:027
274500099360,35cyclictest0-21swapper/211:50:022
2745000993425,8cyclictest681-21dbus-daemon08:00:012
2745014993327,5cyclictest2909045-21latency_hist12:10:027
2744998993228,3cyclictest2917083-21sh12:25:011
2745003993128,2cyclictest369-21systemd-journal08:40:023
274500399310,2cyclictest2917078-21sh12:25:023
274500399310,2cyclictest2914372-21sh12:20:013
2745000993128,2cyclictest0-21swapper/208:58:122
274500099310,3cyclictest2775467-21debian-sa108:05:012
274500099310,30cyclictest0-21swapper/210:58:142
274501499300,29cyclictest0-21swapper/710:15:017
274501499300,29cyclictest0-21swapper/709:48:147
2745009993028,1cyclictest2889367-21apt11:35:025
2745009993026,3cyclictest2753636-21dump-pmu-power07:25:015
2745000993028,1cyclictest1-21systemd10:05:012
274500099300,28cyclictest2887320-21apt-get11:33:132
274500099300,0cyclictest0-21swapper/209:33:152
274499899300,29cyclictest2919772-21turbostat.cron12:30:021
2744994993028,1cyclictest1-21systemd08:45:010
274499499300,29cyclictest2794580-21munin-run08:40:010
2745014992927,1cyclictest2772755-21sh08:00:027
274501499290,28cyclictest2811644-21http09:13:147
274501499290,28cyclictest0-21swapper/708:23:167
274501499290,28cyclictest0-21swapper/708:10:017
274501499290,1cyclictest2905802-21munin-run12:05:017
2745013992927,1cyclictest2915037-21apt-get12:23:136
274501399290,28cyclictest2906433-21apt-get12:08:136
274501399290,28cyclictest0-21swapper/609:40:006
274500999290,28cyclictest2917725-21apt-get12:28:125
274500999290,28cyclictest0-21swapper/510:33:135
274500999290,28cyclictest0-21swapper/509:48:145
274500999290,28cyclictest0-21swapper/507:13:125
274500999290,28cyclictest0-21swapper/507:13:115
274500999290,1cyclictest2871167-21apt-get11:03:165
274500799290,28cyclictest0-21swapper/407:23:144
274500799290,1cyclictest681-21dbus-daemon11:00:004
274500799290,1cyclictest2863084-21apt-get10:48:144
274500799290,1cyclictest2795492-21apt-get08:43:134
2745003992928,1cyclictest0-21swapper/310:10:013
2745003992928,0cyclictest0-21swapper/308:48:143
2745003992927,1cyclictest0-21swapper/309:28:133
2745003992926,2cyclictest2769804-21sh07:55:013
274500399290,1cyclictest0-21swapper/309:48:123
274500399290,1cyclictest0-21swapper/308:20:023
2745000992926,3cyclictest0-21swapper/208:30:012
2745000992924,4cyclictest0-21swapper/210:50:012
274500099290,28cyclictest0-21swapper/211:53:142
274500099290,28cyclictest0-21swapper/211:53:132
274500099290,28cyclictest0-21swapper/211:43:112
274500099290,28cyclictest0-21swapper/207:38:132
274500099290,1cyclictest2794633-21gpgv08:40:012
274500099290,1cyclictest0-21swapper/212:30:022
2744998992927,1cyclictest369-21systemd-journal12:40:011
274499899290,29cyclictest2892056-21cron11:40:011
274499899290,1cyclictest681-21dbus-daemon10:20:001
274499899290,1cyclictest0-21swapper/112:20:011
2744994992927,1cyclictest2876542-21apt-get11:13:130
2744994992926,2cyclictest369-21systemd-journal08:55:020
274499499290,28cyclictest0-21swapper/010:10:010
274499499290,28cyclictest0-21swapper/009:08:130
274499499290,1cyclictest0-21swapper/007:20:020
274499499290,1cyclictest0-21swapper/007:20:010
274501499280,28cyclictest1-21systemd10:45:007
274501499280,28cyclictest0-21swapper/710:05:007
274501499280,0cyclictest0-21swapper/710:08:137
2745013992827,1cyclictest0-21swapper/612:20:026
274501399280,28cyclictest2894794-21idleruntime-cro11:45:016
274501399280,28cyclictest0-21swapper/611:08:146
274501399280,28cyclictest0-21swapper/611:00:016
274501399280,28cyclictest0-21swapper/610:28:136
274501399280,1cyclictest2808340-21awk09:05:016
274501399280,0cyclictest0-21swapper/607:23:136
2745009992827,1cyclictest0-21swapper/507:20:025
2745009992827,1cyclictest0-21swapper/507:20:025
2745009992826,1cyclictest2923103-21apt-get12:38:135
2745009992826,1cyclictest2762391-21apt-get07:43:145
274500999280,27cyclictest0-21swapper/511:55:025
274500999280,27cyclictest0-21swapper/511:55:015
274500999280,27cyclictest0-21swapper/508:23:155
274500999280,0cyclictest0-21swapper/512:33:125
274500799280,27cyclictest0-21swapper/410:08:124
2745003992827,1cyclictest2860134-21apt-get10:43:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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