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2026-08-30 - 22:45
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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 Sun Aug 30, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
319914999143123,13cyclictest1213033-21systemd-journal10:15:140
319914999140103,24cyclictest3211794-21latency_hist07:50:010
319915399137128,7cyclictest3277248-21kworker/u8:1+events_unbound11:20:011
319914999135128,5cyclictest3214943-21kworker/u8:0+flush-179:008:00:010
319915399130119,8cyclictest3227724-21latency_hist08:40:011
319914999130118,8cyclictest3199013-21latency_hist07:10:020
319915399127112,12cyclictest1213033-21systemd-journal11:10:011
319914999126114,9cyclictest3291586-21latency_hist11:55:010
319914999125115,7cyclictest3222943-21latency_hist08:25:010
319914999124113,8cyclictest3290001-21latency_hist11:50:010
319914999123114,7cyclictest3293150-21kworker/u8:1+events_unbound12:20:020
319914999123112,9cyclictest3294783-21latency_hist12:05:000
319914999120110,7cyclictest3245993-21latency_hist09:35:010
319915399119109,7cyclictest3235936-21latency_hist09:05:001
319915399119108,8cyclictest3301405-21latency_hist12:25:011
319915399118104,11cyclictest3254223-21latency_hist10:00:021
319915399116108,6cyclictest3265868-21latency_hist10:35:011
319914999115104,7cyclictest1-21systemd11:45:000
31991499911097,10cyclictest1213033-21systemd-journal08:30:140
319914999110103,5cyclictest3277248-21kworker/u8:1+flush-179:011:20:150
31991539910898,7cyclictest3254684-21cat10:00:021
31991539910494,8cyclictest3248115-21apt-get09:40:131
31991499910492,10cyclictest1213033-21systemd-journal07:20:000
31991499910393,8cyclictest3251289-21kworker/u8:1+flush-179:009:50:160
31991499910296,4cyclictest3283674-21kworker/u8:3+flush-179:012:15:250
3199153999988,8cyclictest3299546-21apt-get12:20:001
3199149999991,7cyclictest3282086-21kworker/u8:2+flush-179:011:30:010
3199149999790,5cyclictest3293150-21kworker/u8:1+flush-179:012:10:160
3199149999789,6cyclictest3264333-21kworker/u8:3+events_unbound10:45:000
3199149999786,9cyclictest3277267-21apt-get11:10:130
3199153999585,8cyclictest3205408-21latency_hist07:30:011
3199153999585,7cyclictest3227696-21kworker/u8:0+flush-179:008:45:201
3199149999587,7cyclictest3202856-21kworker/u8:1+flush-179:007:55:000
3199149999585,8cyclictest3262950-21apt-get10:25:120
3199153999487,5cyclictest3230362-21kworker/u8:2+events_unbound09:35:011
3199153999487,5cyclictest3182629-21kworker/u8:0+flush-179:007:10:231
3199149999488,4cyclictest3220794-21kworker/u8:1+flush-179:008:40:170
3199153999384,6cyclictest3285226-21latency_hist11:35:011
3199153999381,9cyclictest1213033-21systemd-journal11:45:001
3199149999386,5cyclictest3213357-21kworker/u8:2+flush-179:008:10:220
3199149999385,6cyclictest3283674-21kworker/u8:3+flush-179:012:05:140
3199153999282,7cyclictest3273803-21kworker/u8:0+flush-179:011:00:221
3199149999285,5cyclictest3277248-21kworker/u8:1+flush-179:011:15:170
3199153999184,5cyclictest3222919-21kworker/u8:2+flush-179:008:30:221
3199153999182,7cyclictest3202856-21kworker/u8:1+flush-179:007:45:271
3199153999182,6cyclictest3288450-21kworker/u8:0+flush-179:011:50:221
3199149999185,4cyclictest3293150-21kworker/u8:1+events_unbound12:35:250
3199153998981,6cyclictest3182629-21kworker/u8:0+flush-179:007:50:201
3199153998980,7cyclictest3230362-21kworker/u8:2+flush-179:009:15:151
3199153998973,14cyclictest3220794-21kworker/u8:1+flush-179:008:20:151
3199153998879,7cyclictest1213033-21systemd-journal12:00:011
3199149998881,5cyclictest3202856-21kworker/u8:1+flush-179:007:25:230
3199149998781,4cyclictest3264333-21kworker/u8:3+flush-179:010:45:150
3199153998676,8cyclictest3246004-21apt-get09:35:021
3199149998678,6cyclictest3203865-21kworker/u8:2+flush-179:007:35:240
3199153998577,7cyclictest3182629-21kworker/u8:0+flush-179:007:20:001
3199153998572,11cyclictest3277248-21kworker/u8:1+events_unbound11:15:011
3199153998478,4cyclictest3243076-21apt-get09:25:121
3199153998374,7cyclictest3230362-21kworker/u8:2+flush-179:009:00:011
3199149998379,3cyclictest3261087-21kworker/u8:2+flush-179:010:35:220
3199149998376,4cyclictest3242865-21kworker/u8:3+flush-179:009:35:140
3199149998374,6cyclictest3254185-21kworker/u8:1+events_unbound10:00:160
3199153998276,4cyclictest3182629-21kworker/u8:0+flush-179:007:40:171
3199149998275,5cyclictest3247893-21kworker/u8:0+events_unbound10:25:020
3199153998167,11cyclictest1213033-21systemd-journal07:59:591
3199149998175,5cyclictest3293150-21kworker/u8:1+flush-179:011:59:550
3199149998173,6cyclictest3266925-21kworker/u8:0+events_unbound10:50:150
3199153998073,5cyclictest3277248-21kworker/u8:1+flush-179:011:25:231
3199153998073,5cyclictest3229310-21latency_hist08:45:011
3199149998073,5cyclictest3213357-21kworker/u8:2+flush-179:008:00:210
3199153997971,5cyclictest3296367-21latency_hist12:10:011
3199149997973,4cyclictest3230362-21kworker/u8:2+flush-179:009:40:170
3199149997973,4cyclictest3182629-21kworker/u8:0+flush-179:007:40:230
3199156997872,4cyclictest3230906-21turbostat08:50:013
3199149997872,4cyclictest3247893-21kworker/u8:0+flush-179:010:10:150
3199149997871,5cyclictest3202856-21kworker/u8:1+flush-179:007:30:250
3199149997862,6cyclictest3230362-21kworker/u8:2+events_unbound09:00:150
3199153997770,5cyclictest3230362-21kworker/u8:2+events_unbound09:50:001
3199153997769,6cyclictest1213033-21systemd-journal10:36:141
3199153997664,9cyclictest3239107-21latency_hist09:15:021
3199149997670,4cyclictest3293150-21kworker/u8:1+flush-179:012:25:170
3199149997670,4cyclictest3293150-21kworker/u8:1+flush-179:012:25:170
3199149997569,4cyclictest3230362-21kworker/u8:2+flush-179:009:29:540
3199153997468,5cyclictest3213357-21kworker/u8:2+flush-179:008:05:241
3199149997468,5cyclictest3220794-21kworker/u8:1+flush-179:008:55:160
3199149997462,9cyclictest3229853-21diskstats08:45:150
3199149997367,4cyclictest3273803-21kworker/u8:0+events_unbound11:05:140
3199153997265,4cyclictest3231227-21apt-key08:50:021
3199153997264,6cyclictest3230362-21kworker/u8:2+flush-179:009:55:001
3199153997264,6cyclictest3221344-21latency_hist08:20:011
3199149997162,6cyclictest3263575-21kworker/u8:1+flush-179:010:30:210
3199153997061,7cyclictest3297950-21latency_hist12:15:011
3199149997064,4cyclictest3293150-21kworker/u8:1+flush-179:012:35:000
3199153996961,5cyclictest3269105-21kworker/u8:2+flush-179:010:55:241
3199149996964,3cyclictest3232739-21latency_hist08:55:010
3199149996864,3cyclictest3193946-21kworker/u8:4+flush-179:007:10:260
3199156996759,6cyclictest3205415-21turbostat07:30:003
3199149996762,4cyclictest3230362-21kworker/u8:2+flush-179:009:55:250
3199149996761,4cyclictest3282086-21kworker/u8:2+flush-179:011:40:000
3199149996761,4cyclictest3282086-21kworker/u8:2+flush-179:011:40:000
3199149996761,4cyclictest3264333-21kworker/u8:3+flush-179:011:00:010
3199156996660,4cyclictest3282056-21turbostat11:25:003
3199153996661,4cyclictest3230362-21kworker/u8:2+events_unbound09:05:151
3199149996659,5cyclictest3273803-21kworker/u8:0+flush-179:011:00:150
3199153996558,5cyclictest3182629-21kworker/u8:0+flush-179:007:35:141
3199153996556,7cyclictest1213033-21systemd-journal10:50:011
3199153996455,7cyclictest3247893-21kworker/u8:0+flush-179:010:15:001
3199153996358,4cyclictest3213357-21kworker/u8:2+events_unbound08:10:241
3199149996357,5cyclictest3220794-21kworker/u8:1+flush-179:008:25:210
3199149996354,7cyclictest3239116-21apt-get09:15:010
3199153996255,5cyclictest3202489-21apt-get07:20:111
3199153996253,6cyclictest3214943-21kworker/u8:0+flush-179:008:00:151
3199149996256,4cyclictest3254185-21kworker/u8:1+events_unbound10:05:160
3199153996155,4cyclictest3261087-21kworker/u8:2+events_unbound10:20:221
3199153996153,4cyclictest3277248-21kworker/u8:1+flush-179:011:20:211
3199153996151,8cyclictest1213033-21systemd-journal09:24:591
3199149996155,4cyclictest3277248-21kworker/u8:1+events_unbound11:30:260
3199153996052,7cyclictest3293150-21kworker/u8:1+flush-179:012:25:211
3199153996052,7cyclictest3293150-21kworker/u8:1+flush-179:012:25:211
3199154995956,2cyclictest0-21swapper/208:26:582
3199149995954,4cyclictest3240930-21kworker/u8:0+flush-179:009:20:240
3199149995951,6cyclictest3213357-21kworker/u8:2+flush-179:008:15:160
3199149995750,5cyclictest3213357-21kworker/u8:2+flush-179:008:05:210
3199156995653,2cyclictest0-21swapper/308:26:593
3199153995649,5cyclictest3264333-21kworker/u8:3+events_unbound10:40:161
3199149995651,4cyclictest3230362-21kworker/u8:2+flush-179:009:15:250
3199149995651,4cyclictest3220794-21kworker/u8:1+events_unbound08:35:180
3199153995550,4cyclictest3254185-21kworker/u8:1+flush-179:010:15:221
3199149995550,4cyclictest3202856-21kworker/u8:1+events_unbound07:20:230
3199153995447,5cyclictest3256325-21apt-get10:05:111
3199154995349,2cyclictest0-21swapper/210:15:582
3199149995347,4cyclictest3247893-21kworker/u8:0+events_unbound09:45:190
3199153995148,2cyclictest3293150-21kworker/u8:1+events_unbound12:00:241
3199153995145,4cyclictest3283674-21kworker/u8:3+flush-179:011:45:131
4577091500,12ptp4l441ktimers/307:09:563
3199153995041,7cyclictest1213033-21systemd-journal11:40:011
3199153995041,7cyclictest1213033-21systemd-journal11:40:011
3199153994943,4cyclictest3220794-21kworker/u8:1+flush-179:008:30:011
3199156994745,1cyclictest0-21swapper/310:15:583
3199153994743,3cyclictest3293150-21kworker/u8:1+flush-179:012:35:211
3199153994739,6cyclictest3202856-21kworker/u8:1+flush-179:007:35:011
319914999470,44cyclictest3237540-21basename09:10:000
3199154994339,2cyclictest0-21swapper/209:03:592
319915699400,4cyclictest3275443-21turbostat11:05:003
319915699400,33cyclictest3242828-21turbostat09:24:593
319915499400,37cyclictest0-21swapper/207:39:552
319915699390,4cyclictest3272244-21turbostat10:55:003
319915699390,4cyclictest3256087-21turbostat10:05:003
319915699390,35cyclictest0-21swapper/312:29:553
319915699390,35cyclictest0-21swapper/312:29:553
3199153993936,2cyclictest3304600-21awk12:35:001
3199156993832,5cyclictest3304597-21turbostat12:35:003
319915699380,35cyclictest0-21swapper/310:34:553
3199154993835,2cyclictest0-21swapper/212:35:002
3199154993835,2cyclictest0-21swapper/207:41:592
3199154993834,2cyclictest0-21swapper/208:54:002
319915499380,36cyclictest0-21swapper/211:55:592
319915499380,36cyclictest0-21swapper/211:02:592
319915499380,36cyclictest0-21swapper/209:31:582
3199156993735,1cyclictest0-21swapper/309:03:593
3199156993734,2cyclictest0-21swapper/311:56:003
3199156993734,2cyclictest0-21swapper/309:31:593
319915699370,36cyclictest0-21swapper/307:57:593
3199154993734,2cyclictest0-21swapper/210:20:592
3199154993733,2cyclictest0-21swapper/211:20:002
319915499370,35cyclictest0-21swapper/212:05:592
319915499370,2cyclictest0-21swapper/208:48:592
319915499370,2cyclictest0-21swapper/208:42:582
319915499370,1cyclictest0-21swapper/211:54:592
3199153993732,4cyclictest3264333-21kworker/u8:3+flush-179:010:55:001
3199156993634,1cyclictest0-21swapper/308:50:583
3199156993634,1cyclictest0-21swapper/307:15:593
3199156993633,2cyclictest0-21swapper/312:12:593
319915699360,35cyclictest0-21swapper/312:04:593
319915699360,35cyclictest0-21swapper/311:29:593
319915699360,35cyclictest0-21swapper/307:50:593
3199154993634,1cyclictest0-21swapper/212:15:002
3199154993633,2cyclictest0-21swapper/211:45:592
3199154993633,2cyclictest0-21swapper/208:19:592
3199154993632,2cyclictest0-21swapper/210:31:582
3199154993632,2cyclictest0-21swapper/208:32:592
319915499360,2cyclictest0-21swapper/211:44:552
319915499360,1cyclictest0-21swapper/212:29:552
319915499360,1cyclictest0-21swapper/212:29:552
3199156993533,1cyclictest0-21swapper/312:07:593
3199154993531,2cyclictest0-21swapper/208:09:552
3199153993530,4cyclictest3247893-21kworker/u8:0+events_unbound10:25:191
3199156993432,1cyclictest0-21swapper/311:13:003
3199156993431,2cyclictest0-21swapper/309:48:593
3199156993331,1cyclictest0-21swapper/310:21:003
3199156993331,1cyclictest0-21swapper/307:41:593
3199154993330,2cyclictest0-21swapper/207:59:592
3199154993328,2cyclictest0-21swapper/207:32:592
3199156993230,1cyclictest0-21swapper/311:19:593
3199156993230,1cyclictest0-21swapper/308:19:593
3199156993229,2cyclictest0-21swapper/311:45:593
3199154993229,2cyclictest0-21swapper/210:08:592
3199154993229,2cyclictest0-21swapper/207:24:592
3199154993228,2cyclictest0-21swapper/211:30:592
3199154993228,2cyclictest0-21swapper/208:57:582
3199154993228,2cyclictest0-21swapper/207:26:592
4577091310,7ptp4l61490irq/134-eno1-TxRx-009:45:003
4577091310,7ptp4l441ktimers/307:50:003
319915699310,30cyclictest0-21swapper/311:05:593
3199154993128,2cyclictest0-21swapper/208:22:002
4577091300,7ptp4l441ktimers/310:00:003
4577091300,7ptp4l441ktimers/307:25:003
4577091300,6ptp4l441ktimers/310:50:003
4577091300,6ptp4l441ktimers/310:35:013
4577091300,6ptp4l441ktimers/309:30:003
3199156993028,1cyclictest0-21swapper/308:32:593
3199156993028,1cyclictest0-21swapper/308:09:563
319915699300,29cyclictest0-21swapper/310:55:143
319915699300,1cyclictest0-21swapper/311:34:553
3199154993027,2cyclictest0-21swapper/210:11:002
3199154993027,2cyclictest0-21swapper/209:52:002
3199154993027,2cyclictest0-21swapper/209:25:132
3199154993027,2cyclictest0-21swapper/209:20:032
3199154993027,2cyclictest0-21swapper/208:00:132
319915499300,2cyclictest0-21swapper/209:35:032
319915499300,2cyclictest0-21swapper/209:15:012
319915499300,1cyclictest0-21swapper/207:50:582
4577091290,6ptp4l61490irq/134-eno1-TxRx-011:55:013
4577091290,6ptp4l441ktimers/312:40:003
4577091290,6ptp4l441ktimers/307:15:003
4577091290,5ptp4l441ktimers/310:30:003
4577091290,5ptp4l441ktimers/309:00:013
4577091290,4ptp4l441ktimers/307:35:013
3199156992927,1cyclictest0-21swapper/309:50:133
319915699290,27cyclictest0-21swapper/309:35:023
319915699290,27cyclictest0-21swapper/308:35:133
319915699290,27cyclictest0-21swapper/308:00:123
3199154992926,2cyclictest0-21swapper/211:20:022
3199154992926,2cyclictest0-21swapper/210:45:122
3199154992925,2cyclictest0-21swapper/209:05:142
319915499290,27cyclictest0-21swapper/208:35:142
319915499290,27cyclictest0-21swapper/208:10:132
319915499290,27cyclictest0-21swapper/207:15:132
319915499290,1cyclictest0-21swapper/210:55:132
4577091280,6ptp4l61490irq/134-eno1-TxRx-012:20:003
4577091280,6ptp4l441ktimers/311:44:563
4577091280,5ptp4l441ktimers/310:44:553
4577091280,5ptp4l441ktimers/308:45:013
4577091280,5ptp4l441ktimers/307:39:563
3199156992826,1cyclictest0-21swapper/310:09:003
3199156992825,2cyclictest0-21swapper/309:15:023
3199156992825,2cyclictest0-21swapper/309:05:133
3199156992825,2cyclictest0-21swapper/308:21:593
319915699280,27cyclictest0-21swapper/312:20:123
319915699280,27cyclictest0-21swapper/310:10:113
3199154992825,2cyclictest0-21swapper/211:28:592
3199154992825,2cyclictest0-21swapper/211:05:592
3199154992825,2cyclictest0-21swapper/210:29:002
319915499280,26cyclictest0-21swapper/212:20:122
319915499280,26cyclictest0-21swapper/209:14:582
4577091270,4ptp4l441ktimers/311:40:013
4577091270,4ptp4l441ktimers/311:40:013
3199156992725,1cyclictest0-21swapper/309:14:583
3199156992725,1cyclictest0-21swapper/308:10:133
3199154992724,2cyclictest0-21swapper/210:51:592
3199154992724,2cyclictest0-21swapper/209:44:552
3199154992723,2cyclictest0-21swapper/212:15:592
319915499270,25cyclictest0-21swapper/212:03:002
3199154992623,2cyclictest0-21swapper/210:40:142
3199154992622,2cyclictest0-21swapper/211:35:112
3199154992622,2cyclictest0-21swapper/211:35:112
3199154992622,2cyclictest0-21swapper/211:10:592
3199154992522,2cyclictest0-21swapper/210:00:122
3199153992419,4cyclictest0-21swapper/107:10:021
3199154992320,2cyclictest0-21swapper/207:45:142
3199154992016,2cyclictest0-21swapper/209:57:002
3199154991915,2cyclictest0-21swapper/207:13:592
319915499190,1cyclictest0-21swapper/209:49:582
3199154991613,2cyclictest0-21swapper/212:37:592
3199154991613,2cyclictest0-21swapper/210:37:592
31991549941,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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