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2026-05-14 - 18:44
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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 highest latencies:
System rackeslot6.osadl.org (updated Thu May 14, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31612049910594,8cyclictest3267320-21latency_hist12:40:021
3161204999993,5cyclictest3228590-21kworker/u8:2+events_unbound10:40:011
3161201999787,7cyclictest1213033-21systemd-journal07:35:000
3161204999180,8cyclictest3211018-21kworker/u8:3+flush-179:009:45:201
3161204999177,12cyclictest3220607-21kworker/u8:2+events_unbound10:30:161
3161204999085,4cyclictest3156363-21kworker/u8:3+flush-179:007:25:251
3161204999081,7cyclictest3237578-21kworker/u8:0+events_unbound11:55:011
3161204998878,7cyclictest3190116-21kworker/u8:0+events_unbound09:05:161
3161201998879,6cyclictest3228518-21kworker/u8:1+flush-179:010:55:240
3161204998781,5cyclictest3237578-21kworker/u8:0+events_unbound12:00:241
3161204998680,4cyclictest3233362-21kworker/u8:2+events_unbound11:05:011
3161204998576,6cyclictest3167736-21kworker/u8:1+events_unbound08:15:191
3161204998576,6cyclictest3167736-21kworker/u8:1+events_unbound08:15:181
3161204998472,9cyclictest3170968-21latency_hist07:40:001
3161204998375,6cyclictest3199337-21kworker/u8:1+events_unbound09:10:291
3161204998275,4cyclictest3167790-21kworker/u8:2+flush-179:007:50:151
3161201998271,8cyclictest3228792-21/usr/sbin/munin10:40:230
3161201998271,8cyclictest3228792-21/usr/sbin/munin10:40:230
3161204998072,6cyclictest3190116-21kworker/u8:0+flush-179:008:45:251
3161204997972,5cyclictest3167736-21kworker/u8:1+events_unbound07:30:131
3161204997970,6cyclictest3223770-21latency_hist10:25:011
3161204997969,7cyclictest3161096-21latency_hist07:10:011
3161204997873,4cyclictest3209885-21kworker/u8:0+events_unbound09:50:231
3161204997871,5cyclictest3201251-21kworker/u8:3+flush-179:009:30:131
3161204997772,4cyclictest3237578-21kworker/u8:0+flush-179:011:15:241
3161204997766,8cyclictest3228518-21kworker/u8:1+flush-179:011:10:181
3161204997668,6cyclictest3262328-21kworker/u8:0+flush-179:012:29:591
3161204997658,16cyclictest3232390-21kworker/u8:0+flush-179:010:55:001
3161204997570,4cyclictest3167790-21kworker/u8:2+flush-179:007:40:251
3161204997569,4cyclictest3158608-21kworker/u8:2+flush-179:007:15:141
3161204997567,6cyclictest3220607-21kworker/u8:2+events_unbound10:30:001
3161204997566,6cyclictest3158608-21kworker/u8:2+flush-179:007:20:131
3161204997563,4cyclictest3241377-21kworker/u8:3+events_unbound11:30:211
3161201997568,5cyclictest3167790-21kworker/u8:2+flush-179:007:45:210
3161204997467,5cyclictest3188455-21kworker/u8:1+flush-179:008:35:001
3161201997461,11cyclictest1213033-21systemd-journal11:07:540
3161201997461,11cyclictest1213033-21systemd-journal11:07:540
3161204997366,5cyclictest3218964-21kworker/u8:3+flush-179:010:15:251
3161204997365,6cyclictest3209885-21kworker/u8:0+flush-179:010:15:001
3161204997364,7cyclictest3257509-21latency_hist12:10:001
3161204997267,4cyclictest3240720-21kworker/u8:2+flush-179:011:25:241
3161204997265,6cyclictest3241377-21kworker/u8:3+events_unbound11:35:241
3161204997265,4cyclictest3178963-21kworker/u8:2+flush-179:008:50:201
3161201997268,3cyclictest3201251-21kworker/u8:3+flush-179:009:20:240
3161201997262,6cyclictest3193296-21kworker/u8:3+flush-179:008:55:000
3161204997164,6cyclictest3259072-21kworker/u8:2+events_unbound12:30:181
3161204997164,5cyclictest3237578-21kworker/u8:0+flush-179:011:45:011
3161204997160,9cyclictest3180768-21apt-get08:10:101
3161204997160,7cyclictest3174181-21kworker/u8:3+events_unbound08:25:161
3161204997158,10cyclictest1213033-21systemd-journal09:05:001
3161201997164,5cyclictest3167736-21kworker/u8:1+flush-179:008:15:210
3161201997164,5cyclictest3167736-21kworker/u8:1+flush-179:008:15:210
3161204997064,4cyclictest3177306-21kworker/u8:0+flush-179:008:00:221
3161201997055,13cyclictest3233362-21kworker/u8:2+flush-179:011:00:230
3161204996961,6cyclictest3237578-21kworker/u8:0+flush-179:011:45:151
3161204996961,5cyclictest3228518-21kworker/u8:1+flush-179:010:55:151
3161201996759,5cyclictest3167736-21kworker/u8:1+flush-179:007:50:240
3161204996657,5cyclictest3174181-21kworker/u8:3+flush-179:008:35:221
3161204996561,3cyclictest3207827-21kworker/u8:2+events_unbound09:35:221
3161204996548,15cyclictest3244549-21kworker/u8:1+flush-179:012:20:231
3161204996458,5cyclictest3209885-21kworker/u8:0+events_unbound10:00:001
3161204996458,4cyclictest3207827-21kworker/u8:2+flush-179:009:40:141
3161204996456,6cyclictest3174181-21kworker/u8:3+events_unbound08:05:261
3161201996458,4cyclictest3237578-21kworker/u8:0+flush-179:012:05:210
3161201996458,4cyclictest3228518-21kworker/u8:1+flush-179:010:45:240
3161204996356,5cyclictest3175986-21apt-get07:55:111
3161204996356,5cyclictest1213033-21systemd-journal10:06:531
3161201996358,3cyclictest3215201-21kworker/u8:1+flush-179:010:00:240
3161201996357,5cyclictest3167790-21kworker/u8:2+flush-179:007:35:220
3161201996252,7cyclictest3262328-21kworker/u8:0+events_unbound12:25:160
3161204996155,4cyclictest3244549-21kworker/u8:1+events_unbound12:15:131
3161201996152,6cyclictest3167736-21kworker/u8:1+flush-179:007:55:230
3161204996055,4cyclictest3237578-21kworker/u8:0+flush-179:011:20:191
3161204996054,5cyclictest3228518-21kworker/u8:1+flush-179:010:45:181
3161201996050,7cyclictest3190067-21latency_hist08:40:010
3161201996046,11cyclictest3215201-21kworker/u8:1+events_unbound10:10:010
3161201995940,17cyclictest1213033-21systemd-journal07:16:540
3161204995751,4cyclictest3204440-21kworker/u8:0+flush-179:009:30:011
3161201995746,8cyclictest510-21rs:main0
3161201995733,22cyclictest3201204-21cron09:15:000
3161204995651,3cyclictest3178963-21kworker/u8:2+flush-179:008:55:161
3161201995648,6cyclictest3179471-21diskstats08:05:160
3161204995550,4cyclictest3156363-21kworker/u8:3+flush-179:007:10:251
3161204995550,4cyclictest3156363-21kworker/u8:3+flush-179:007:10:251
3161201995548,5cyclictest3214460-21apt-get09:55:110
3161201995535,18cyclictest3198041-21cron09:05:000
3161204995450,3cyclictest3201251-21kworker/u8:3+flush-179:009:20:201
3161204995448,4cyclictest3199337-21kworker/u8:1+flush-179:009:15:141
3161201995449,4cyclictest3240720-21kworker/u8:2+flush-179:011:15:250
3161201995441,11cyclictest3244549-21kworker/u8:1+flush-179:011:36:070
3161201995246,4cyclictest3186883-21latency_hist08:30:000
3161201995244,5cyclictest3174181-21kworker/u8:3+events_unbound08:25:010
3161201995234,16cyclictest3233320-21apt10:55:000
3161201995142,6cyclictest3166424-21apt-get07:25:100
3161201995136,11cyclictest1213033-21systemd-journal12:00:000
4577091500,14ptp4l441ktimers/307:10:013
3161201995045,4cyclictest3190116-21kworker/u8:0+flush-179:008:55:240
3161201995036,11cyclictest1213033-21systemd-journal09:50:000
3161204994943,4cyclictest3174181-21kworker/u8:3+events_unbound08:20:121
3161201994944,3cyclictest3218964-21kworker/u8:3+events_unbound10:25:220
3161201994936,9cyclictest3244549-21kworker/u8:1+flush-179:011:50:140
316120199491,46cyclictest1-21systemd11:49:540
3161204994844,3cyclictest3237578-21kworker/u8:0+flush-179:012:10:191
3161204994844,3cyclictest3237578-21kworker/u8:0+events_unbound11:05:551
3161204994844,3cyclictest3237578-21kworker/u8:0+events_unbound11:05:551
316120199481,7cyclictest3209436-21turbostat09:44:550
3161201994741,5cyclictest3226931-21kworker/u8:3+flush-179:010:35:160
3161201994741,4cyclictest3207827-21kworker/u8:2+flush-179:009:35:160
3161201994738,7cyclictest3167790-21kworker/u8:2+flush-179:007:40:230
3161201994726,18cyclictest3244514-21latency_hist11:30:010
3161204994641,4cyclictest3215201-21kworker/u8:1+flush-179:010:00:251
3161201994639,5cyclictest3187140-21apt-get08:30:100
3161201994628,16cyclictest0-21swapper/011:35:000
3161204994541,3cyclictest3237578-21kworker/u8:0+events_unbound11:57:541
3161204994540,4cyclictest3178963-21kworker/u8:2+events_unbound08:40:241
3161201994537,6cyclictest3199337-21kworker/u8:1+flush-179:009:20:010
3161201994536,7cyclictest3199640-21idleruntime-cro09:09:590
3161201994519,9cyclictest1213033-21systemd-journal12:35:000
3161204994439,4cyclictest3226931-21kworker/u8:3+events_unbound10:40:131
3161204994439,4cyclictest3226931-21kworker/u8:3+events_unbound10:40:131
3161210994339,2cyclictest0-21swapper/307:50:593
3161201994334,7cyclictest3242942-21ls11:25:000
3161201994325,1cyclictest0-21swapper/012:00:130
316120199430,6cyclictest3257525-21turbostat12:14:540
316120199430,1cyclictest0-21swapper/010:20:130
3161201994233,5cyclictest0-21swapper/007:10:590
3161201994233,5cyclictest0-21swapper/007:10:580
3161201994230,9cyclictest3209885-21kworker/u8:0+flush-179:010:10:200
316120199421,39cyclictest3207852-21grep09:34:590
3161201994136,4cyclictest3244549-21kworker/u8:1+flush-179:012:20:220
3161201994131,8cyclictest3225612-21apt-get10:30:120
3161201994115,9cyclictest3205991-21latency_hist09:30:010
316120499401,37cyclictest714-21Xorg07:49:591
3161201994032,6cyclictest3259072-21kworker/u8:2+flush-179:012:35:170
3161201994020,2cyclictest0-21swapper/008:45:010
316120199401,37cyclictest714-21Xorg11:10:590
3161206993936,2cyclictest0-21swapper/207:15:592
316120699390,36cyclictest0-21swapper/212:17:582
316120699390,36cyclictest0-21swapper/210:19:552
316121099380,3cyclictest3234932-21turbostat11:00:003
316121099380,3cyclictest3177335-21turbostat08:04:543
3161206993835,2cyclictest0-21swapper/211:18:592
3161210993732,4cyclictest3254326-21turbostat11:59:593
316121099370,35cyclictest0-21swapper/308:20:593
3161206993734,2cyclictest0-21swapper/211:04:552
316120699370,35cyclictest0-21swapper/211:51:592
3161201993731,4cyclictest3177306-21kworker/u8:0+flush-179:008:00:200
316121099360,1cyclictest0-21swapper/310:03:593
316120699360,1cyclictest0-21swapper/209:35:592
316120699360,1cyclictest0-21swapper/209:29:552
3161201993630,4cyclictest3260684-21cron12:20:010
3161210993532,2cyclictest3206007-21turbostat09:30:003
316121099350,1cyclictest0-21swapper/309:04:593
316120699350,1cyclictest0-21swapper/208:16:002
316120699350,1cyclictest0-21swapper/208:15:592
3161210993432,1cyclictest0-21swapper/309:50:593
3161210993431,2cyclictest0-21swapper/308:08:583
3161206993432,1cyclictest0-21swapper/208:40:002
3161206993431,2cyclictest0-21swapper/211:44:582
3161206993431,2cyclictest0-21swapper/208:06:582
3161201993430,3cyclictest3166317-21apt-key07:25:010
4577091330,1ptp4l431rcuc/311:10:003
4577091330,1ptp4l431rcuc/311:10:003
3161210993331,1cyclictest0-21swapper/310:28:593
3161210993328,4cyclictest3177335-21turbostat07:59:593
3161201993329,3cyclictest3182101-21munin-run08:15:010
3161201993226,4cyclictest714-21Xorg10:18:590
3161210993129,1cyclictest0-21swapper/308:35:583
3161210993126,4cyclictest0-21swapper/309:10:143
316121099310,30cyclictest0-21swapper/309:15:593
3161206993129,1cyclictest0-21swapper/207:25:012
3161206993128,2cyclictest0-21swapper/210:04:592
316120699310,29cyclictest0-21swapper/210:24:592
3161210993025,4cyclictest0-21swapper/310:30:123
3161210993024,5cyclictest3194845-21turbostat08:55:003
316121099300,29cyclictest0-21swapper/311:39:593
3161206993027,2cyclictest0-21swapper/212:38:592
3161206993027,2cyclictest0-21swapper/208:55:592
316120699300,29cyclictest0-21swapper/209:30:122
316120699300,28cyclictest0-21swapper/211:35:022
316120699300,28cyclictest0-21swapper/209:10:142
3161201993025,3cyclictest3193264-21apt08:49:590
3161201993024,5cyclictest3209885-21kworker/u8:0+flush-179:009:50:140
3161210992927,1cyclictest0-21swapper/309:24:553
3161210992927,1cyclictest0-21swapper/307:20:113
316121099290,28cyclictest3215808-21turbostat10:00:003
316121099290,27cyclictest0-21swapper/312:25:123
316121099290,27cyclictest0-21swapper/311:40:133
316121099290,27cyclictest0-21swapper/311:25:123
316121099290,21cyclictest0-21swapper/311:30:123
3161206992927,1cyclictest0-21swapper/211:00:002
3161206992927,1cyclictest0-21swapper/208:50:122
3161206992926,2cyclictest0-21swapper/212:30:022
3161206992926,2cyclictest0-21swapper/210:30:132
3161206992926,2cyclictest0-21swapper/209:41:592
3161206992926,2cyclictest0-21swapper/208:22:582
316120699290,28cyclictest0-21swapper/208:45:132
316120699290,27cyclictest0-21swapper/209:50:112
316120699290,27cyclictest0-21swapper/208:33:592
4577091280,6ptp4l441ktimers/312:40:013
3161210992826,1cyclictest0-21swapper/312:05:593
3161210992826,1cyclictest0-21swapper/308:18:583
3161210992826,1cyclictest0-21swapper/308:18:583
316121099280,2cyclictest0-21swapper/308:55:133
316121099280,27cyclictest0-21swapper/312:15:123
316121099280,27cyclictest0-21swapper/308:45:123
316121099280,27cyclictest0-21swapper/307:35:133
316121099280,26cyclictest0-21swapper/312:30:013
316121099280,26cyclictest0-21swapper/307:15:133
316121099280,21cyclictest0-21swapper/311:50:133
3161206992825,2cyclictest0-21swapper/212:25:122
316120699280,2cyclictest0-21swapper/208:00:122
316120699280,26cyclictest0-21swapper/211:55:132
316120699280,26cyclictest0-21swapper/211:25:122
316120699280,26cyclictest0-21swapper/210:35:132
316120699280,26cyclictest0-21swapper/207:25:032
3161210992725,1cyclictest0-21swapper/310:16:593
3161210992725,1cyclictest0-21swapper/309:31:593
316121099270,26cyclictest0-21swapper/307:26:593
3161206992724,2cyclictest0-21swapper/209:48:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-009:39:563
4577091260,6ptp4l61490irq/134-eno1-TxRx-008:45:013
4577091260,6ptp4l441ktimers/309:50:003
4577091260,5ptp4l441ktimers/311:24:553
4577091260,5ptp4l441ktimers/307:34:563
4577091260,3ptp4l441ktimers/309:45:003
3161210992624,1cyclictest0-21swapper/308:26:003
3161210992623,2cyclictest0-21swapper/310:23:593
316121099260,25cyclictest0-21swapper/310:51:593
316121099260,1cyclictest0-21swapper/312:11:593
3161206992624,1cyclictest0-21swapper/211:24:582
3161206992623,2cyclictest0-21swapper/210:29:552
3161206992623,2cyclictest0-21swapper/209:23:592
3161206992623,2cyclictest0-21swapper/207:44:002
316120699260,24cyclictest0-21swapper/212:02:582
316120699260,24cyclictest0-21swapper/211:10:112
316120699260,24cyclictest0-21swapper/210:45:002
316120699260,24cyclictest0-21swapper/210:45:002
316120699260,24cyclictest0-21swapper/210:11:592
316120699260,24cyclictest0-21swapper/208:28:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-010:39:553
4577091250,5ptp4l61490irq/134-eno1-TxRx-010:14:553
4577091250,4ptp4l61490irq/134-eno1-TxRx-012:04:563
4577091250,4ptp4l441ktimers/311:19:543
4577091250,3ptp4l441ktimers/311:05:013
4577091250,3ptp4l441ktimers/308:30:013
4577091250,3ptp4l441ktimers/307:15:003
4577091250,3ptp4l441ktimers/307:14:593
3161210992523,1cyclictest0-21swapper/310:45:593
3161210992523,1cyclictest0-21swapper/307:44:593
3161210992522,2cyclictest0-21swapper/311:13:003
316121099250,24cyclictest0-21swapper/310:44:553
316121099250,24cyclictest0-21swapper/310:44:553
316121099250,24cyclictest0-21swapper/307:48:593
3161206992523,1cyclictest0-21swapper/209:07:002
3161206992523,1cyclictest0-21swapper/209:04:582
3161206992522,2cyclictest0-21swapper/207:48:592
316120699250,2cyclictest0-21swapper/207:39:552
316120699250,2cyclictest0-21swapper/207:10:142
316120699250,2cyclictest0-21swapper/207:10:132
4577091240,3ptp4l441ktimers/310:09:553
316121099240,1cyclictest0-21swapper/312:20:133
316121099240,1cyclictest0-21swapper/308:14:003
3161206992422,1cyclictest0-21swapper/212:14:592
3161206992422,1cyclictest0-21swapper/209:59:592
3161210992321,1cyclictest0-21swapper/311:45:593
3161210992321,1cyclictest0-21swapper/309:07:593
3161206992321,1cyclictest0-21swapper/207:58:002
3161206992320,2cyclictest0-21swapper/211:07:592
3161206992320,2cyclictest0-21swapper/211:07:592
3161206992320,2cyclictest0-21swapper/209:16:592
3161206992320,2cyclictest0-21swapper/207:31:592
231999220,12rtkit-daemon1213296-21systemd-udevd07:07:570
3161206992118,2cyclictest0-21swapper/212:23:592
3161206992017,2cyclictest0-21swapper/210:47:592
3161206992017,2cyclictest0-21swapper/208:43:592
3161206992017,2cyclictest0-21swapper/207:50:582
3161206991917,1cyclictest0-21swapper/212:07:592
3161206991615,1cyclictest0-21swapper/211:34:592
3161206991512,2cyclictest0-21swapper/210:05:112
316120699118,2cyclictest0-21swapper/211:46:592
31612069996,2cyclictest0-21swapper/208:13:592
31612069985,2cyclictest0-21swapper/210:51:582
31612069920,1cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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