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2026-04-18 - 09:34
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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 Sat Apr 18, 2026 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
98915899108102,4cyclictest990684-21kworker/u8:2+events_unbound20:15:230
98915899104100,3cyclictest1051706-21kworker/u8:2+events_unbound22:35:240
989158999990,6cyclictest1006575-21latency_hist20:05:020
989158999690,4cyclictest1063375-21kworker/u8:2+events_unbound23:20:230
989158999186,4cyclictest990684-21kworker/u8:2+events_unbound19:55:230
989158999085,4cyclictest990684-21kworker/u8:2+events_unbound19:30:230
989158999085,4cyclictest1068133-21kworker/u8:0+events_unbound23:40:240
989158998780,5cyclictest1014788-21latency_hist20:30:020
989158998778,8cyclictest986982-21kworker/u8:1+events_unbound19:15:230
989161998476,6cyclictest1094161-21latency_hist00:35:011
989161998170,8cyclictest1213033-21systemd-journal23:05:001
989158998174,5cyclictest1081094-21latency_hist23:55:000
989158998075,4cyclictest1037113-21kworker/u8:2+events_unbound21:50:250
989158998066,11cyclictest1082712-40mandb00:00:010
989161997960,17cyclictest0-21swapper/120:02:581
989158997969,4cyclictest990684-21kworker/u8:2+events_unbound20:10:240
989158997873,4cyclictest1033938-21kworker/u8:3+events_unbound21:45:230
989158997868,4cyclictest1033938-21kworker/u8:3+events_unbound22:25:240
989158997868,3cyclictest1027529-21kworker/u8:2+events_unbound21:22:230
989158997864,11cyclictest1213033-21systemd-journal20:35:000
989158997772,4cyclictest1072918-21kworker/u8:3+events_unbound00:00:240
989161997660,12cyclictest1081129-21kworker/u8:1+flush-179:000:30:001
989158997671,4cyclictest1055093-21kworker/u8:1+events_unbound22:50:250
989161997568,5cyclictest1055093-21kworker/u8:1+flush-179:022:40:001
989158997570,4cyclictest1021191-21kworker/u8:1+flush-179:020:50:240
989161997362,9cyclictest1082712-40mandb00:00:001
989158997267,4cyclictest986982-21kworker/u8:1+events_unbound19:25:250
989158997166,4cyclictest1021191-21kworker/u8:1+flush-179:021:04:240
989158997165,4cyclictest1038709-21true21:45:010
989158997162,6cyclictest1028067-21diskstats21:10:140
989161997046,6cyclictest1213033-21systemd-journal20:11:221
989158997065,4cyclictest1033938-21kworker/u8:3+flush-179:022:11:090
989158997061,3cyclictest1027529-21kworker/u8:2+events_unbound21:15:250
989161996963,4cyclictest1040242-21kworker/u8:0+events_unbound22:00:001
989161996958,8cyclictest1213033-21systemd-journal19:52:221
989158996964,4cyclictest990100-21kworker/u8:0+events_unbound19:23:240
989158996964,4cyclictest1092546-21kworker/u8:2+events_unbound00:33:260
989158996960,3cyclictest1005021-21kworker/u8:3+events_unbound20:40:220
989158996959,4cyclictest1013236-21kworker/u8:1+events_unbound20:35:220
989158996863,4cyclictest998656-21kworker/u8:1+flush-179:019:50:240
989158996863,4cyclictest714-21Xorg22:58:590
989161996754,9cyclictest1045063-21apt-get22:05:001
989158996763,3cyclictest1081129-21kworker/u8:1+events_unbound00:22:220
989158996758,4cyclictest1078159-21kworker/u8:2+events_unbound00:08:320
989158996757,4cyclictest1040242-21kworker/u8:0+events_unbound22:04:230
989158996662,3cyclictest1084232-21kworker/u8:0+events_unbound00:25:240
989158996661,4cyclictest990684-21kworker/u8:2+events_unbound19:43:240
989158996661,4cyclictest990684-21kworker/u8:2+events_unbound19:43:240
989158996660,5cyclictest1040242-21kworker/u8:0+events_unbound22:21:220
989161996555,7cyclictest1213033-21systemd-journal21:38:231
989158996561,3cyclictest1058028-21kworker/u8:0+flush-179:022:44:550
989158996560,4cyclictest1027529-21kworker/u8:2+events_unbound21:29:240
989161996456,6cyclictest1213033-21systemd-journal20:58:221
989161996456,6cyclictest1213033-21systemd-journal20:58:211
989158996459,4cyclictest1058555-21kworker/u8:3+events_unbound23:07:220
989158996459,4cyclictest1055093-21kworker/u8:1+events_unbound22:48:230
989162996359,2cyclictest0-21swapper/223:21:582
989161996361,1cyclictest0-21swapper/123:44:591
989158996358,4cyclictest1063375-21kworker/u8:2+flush-179:023:19:550
989158996358,4cyclictest1021191-21kworker/u8:1+flush-179:021:05:200
989158996358,4cyclictest1021191-21kworker/u8:1+events_unbound21:39:230
989161996254,6cyclictest1068133-21kworker/u8:0+flush-179:023:40:001
989161996254,5cyclictest1040242-21kworker/u8:0+events_unbound22:20:001
989161996153,6cyclictest1004970-21latency_hist20:00:011
989161996152,6cyclictest1213033-21systemd-journal20:20:231
98916199610,1cyclictest271rcuc/119:14:001
989158996157,3cyclictest990684-21kworker/u8:2+events_unbound20:07:220
989158996157,3cyclictest1084232-21kworker/u8:0+flush-179:000:10:240
989158996157,3cyclictest1081129-21kworker/u8:1+events_unbound00:38:580
989158996156,4cyclictest1058555-21kworker/u8:3+flush-179:023:10:260
989158996155,4cyclictest1033938-21kworker/u8:3+events_unbound21:55:130
989158996149,9cyclictest1213033-21systemd-journal23:50:010
989161996043,14cyclictest1040242-21kworker/u8:0+events_unbound22:05:021
989161995952,4cyclictest1058555-21kworker/u8:3+flush-179:022:55:221
989158995955,3cyclictest1021191-21kworker/u8:1+events_unbound21:33:230
989158995954,4cyclictest990100-21kworker/u8:0+events_unbound19:10:220
989158995853,4cyclictest990100-21kworker/u8:0+events_unbound19:48:230
989158995853,4cyclictest1072918-21kworker/u8:3+events_unbound23:38:230
989161995753,2cyclictest1063375-21kworker/u8:2+events_unbound23:20:001
989158995753,3cyclictest1040242-21kworker/u8:0+events_unbound22:09:220
989158995752,4cyclictest1048510-21kworker/u8:2+events_unbound22:15:160
989161995653,2cyclictest0-21swapper/121:03:591
989161995547,6cyclictest1032321-21latency_hist21:25:011
989158995551,3cyclictest990100-21kworker/u8:0+events_unbound19:37:230
989158995549,5cyclictest1088037-21apt-get00:15:130
989161995451,2cyclictest0-21swapper/121:30:591
989161995347,5cyclictest998656-21kworker/u8:1+events_unbound19:50:011
989161995346,5cyclictest1033938-21kworker/u8:3+flush-179:021:54:561
989161995247,3cyclictest1055093-21kworker/u8:1+events_unbound22:35:021
989161995244,6cyclictest1058555-21kworker/u8:3+flush-179:023:05:261
989158995248,3cyclictest1005021-21kworker/u8:3+events_unbound20:49:230
989158995248,3cyclictest1005021-21kworker/u8:3+events_unbound20:22:240
989161995146,4cyclictest1055093-21kworker/u8:1+flush-179:022:52:221
98916199511,47cyclictest1-21systemd22:43:221
989158995140,9cyclictest1073138-21apt-get23:30:110
989161995045,4cyclictest1068133-21kworker/u8:0+events_unbound23:30:231
989161995043,4cyclictest1038677-21latency_hist21:45:011
989161995041,6cyclictest1033938-21kworker/u8:3+events_unbound22:20:221
4577091500,14ptp4l441ktimers/319:10:003
989166994947,1cyclictest0-21swapper/321:10:003
989161994942,5cyclictest1021191-21kworker/u8:1+flush-179:021:05:151
989161994942,5cyclictest1018221-21kworker/u8:0+flush-179:020:50:011
989161994940,7cyclictest1058028-21kworker/u8:0+flush-179:022:50:011
989161994939,7cyclictest998656-21kworker/u8:1+flush-179:019:40:211
989161994939,7cyclictest998656-21kworker/u8:1+flush-179:019:40:201
989161994843,4cyclictest990684-21kworker/u8:2+events_unbound19:35:241
989161994841,5cyclictest995425-21latency_hist19:30:011
989161994838,8cyclictest1066768-21apt-get23:10:111
989158994743,3cyclictest1071960-21kworker/u8:1+events_unbound23:26:240
989166994644,1cyclictest0-21swapper/323:59:593
989161994613,29cyclictest0-21swapper/120:25:121
989166994542,2cyclictest0-21swapper/322:05:003
98916299440,41cyclictest0-21swapper/222:19:542
989161994435,7cyclictest1005021-21kworker/u8:3+flush-179:020:40:211
98916299430,40cyclictest0-21swapper/223:50:582
989158994338,4cyclictest1058555-21kworker/u8:3+events_unbound23:01:170
989161994238,3cyclictest1005021-21kworker/u8:3+events_unbound20:05:221
989161994234,6cyclictest1052213-21diskstats22:25:151
98916199420,1cyclictest0-21swapper/119:18:591
98916699410,39cyclictest1087795-21turbostat00:15:003
989161994130,9cyclictest1094415-21apt-get00:35:121
989166994037,2cyclictest0-21swapper/321:32:593
98916699400,5cyclictest1064941-21turbostat23:04:593
98916699400,4cyclictest1081107-21turbostat23:55:003
98916699400,39cyclictest1066527-21turbostat23:10:003
98916699400,39cyclictest1006583-21turbostat20:05:013
98916699400,39cyclictest0-21swapper/323:24:553
989162994036,2cyclictest0-21swapper/220:21:592
989161994035,4cyclictest1084232-21kworker/u8:0+flush-179:000:10:201
989166993936,2cyclictest0-21swapper/322:55:593
98916699390,4cyclictest1004973-21turbostat20:00:003
98916699390,38cyclictest1068105-21turbostat23:15:013
98916699390,38cyclictest1046898-21turbostat22:10:003
98916699390,38cyclictest1016381-21turbostat20:35:003
98916299390,1cyclictest0-21swapper/222:05:002
989161993936,2cyclictest0-21swapper/123:48:591
989161993930,7cyclictest990684-21kworker/u8:2+flush-179:020:15:191
989158993935,3cyclictest714-21Xorg20:57:590
989158993935,3cyclictest714-21Xorg20:57:580
989166993836,1cyclictest0-21swapper/320:57:593
989166993836,1cyclictest0-21swapper/320:57:583
989166993836,1cyclictest0-21swapper/300:19:553
98916299380,36cyclictest0-21swapper/223:35:592
98916299380,35cyclictest0-21swapper/222:25:012
98916299380,35cyclictest0-21swapper/219:59:552
989161993834,3cyclictest1084389-21systemd-run00:05:001
989161993834,2cyclictest714-21Xorg20:32:591
989161993829,6cyclictest1021191-21kworker/u8:1+events_unbound20:50:181
989158993830,3cyclictest1040242-21kworker/u8:0+events_unbound22:30:180
989166993734,2cyclictest0-21swapper/322:34:553
98916699370,2cyclictest0-21swapper/321:24:003
989162993734,2cyclictest0-21swapper/200:20:592
989162993734,2cyclictest0-21swapper/200:13:592
98916299370,35cyclictest0-21swapper/221:41:582
98916299370,35cyclictest0-21swapper/221:10:592
98916299370,35cyclictest0-21swapper/200:34:592
989161993733,3cyclictest714-21Xorg21:47:591
989161993733,3cyclictest1017958-21cron20:39:591
989166993633,2cyclictest0-21swapper/320:07:583
98916699360,35cyclictest0-21swapper/322:11:583
98916699360,35cyclictest0-21swapper/300:22:593
98916699360,1cyclictest0-21swapper/319:11:593
989162993634,1cyclictest0-21swapper/222:45:002
989162993633,2cyclictest0-21swapper/223:55:592
989162993633,2cyclictest0-21swapper/219:50:592
98916299360,2cyclictest0-21swapper/222:05:142
98916299360,1cyclictest0-21swapper/223:00:002
989161993632,3cyclictest714-21Xorg23:28:591
989161993631,4cyclictest990684-21kworker/u8:2+flush-179:019:30:211
989161993631,4cyclictest1078159-21kworker/u8:2+flush-179:000:09:551
989166993533,1cyclictest0-21swapper/323:19:553
989166993533,1cyclictest0-21swapper/321:59:553
989166993533,1cyclictest0-21swapper/319:27:003
989162993533,1cyclictest0-21swapper/222:14:592
989162993532,2cyclictest0-21swapper/221:27:592
989162993532,2cyclictest0-21swapper/220:05:592
989162993531,2cyclictest0-21swapper/219:19:552
98916299350,2cyclictest0-21swapper/220:15:002
989161993532,2cyclictest1068133-21kworker/u8:0+events_unbound23:20:191
989161993530,4cyclictest1027577-21kworker/u8:3+flush-179:021:14:551
989161993526,7cyclictest1213033-21systemd-journal21:26:211
989161993521,13cyclictest1021191-21kworker/u8:1+flush-179:021:15:261
98916199351,30cyclictest992505-21apt-get19:20:121
989166993432,1cyclictest0-21swapper/320:14:553
989166993432,1cyclictest0-21swapper/319:54:553
989166993431,2cyclictest0-21swapper/322:52:003
989166993431,2cyclictest0-21swapper/321:39:003
989162993431,2cyclictest0-21swapper/219:22:592
989162993427,6cyclictest0-21swapper/223:05:132
98916299340,32cyclictest0-21swapper/221:01:582
98916299340,1cyclictest0-21swapper/221:20:132
989166993331,1cyclictest0-21swapper/323:25:593
989162993331,1cyclictest0-21swapper/223:04:592
989162993330,2cyclictest0-21swapper/220:01:592
989166993230,1cyclictest0-21swapper/319:32:593
989166993229,2cyclictest0-21swapper/321:19:553
989162993229,2cyclictest0-21swapper/222:37:582
989162993225,6cyclictest0-21swapper/220:15:012
989162993224,6cyclictest0-21swapper/221:08:002
98916299320,30cyclictest0-21swapper/219:42:002
98916299320,30cyclictest0-21swapper/219:41:592
98916199321,3cyclictest1079762-21apt-get23:50:121
989166993129,1cyclictest0-21swapper/323:43:593
989166993129,1cyclictest0-21swapper/322:49:553
989166993126,4cyclictest1025944-21turbostat21:05:003
989162993125,5cyclictest0-21swapper/221:50:132
98916299310,2cyclictest0-21swapper/220:35:132
989166993028,1cyclictest0-21swapper/322:43:593
989166993028,1cyclictest0-21swapper/321:49:553
989166993023,5cyclictest1029115-21turbostat21:15:003
98916699300,2cyclictest0-21swapper/320:40:133
98916699300,28cyclictest0-21swapper/320:20:133
98916699300,28cyclictest0-21swapper/300:35:133
989162993024,5cyclictest0-21swapper/221:35:132
98916299300,28cyclictest0-21swapper/221:30:132
98916299300,27cyclictest0-21swapper/223:20:012
989161993026,3cyclictest714-21Xorg00:17:001
989166992927,1cyclictest0-21swapper/322:27:593
989166992927,1cyclictest0-21swapper/320:47:583
989166992927,1cyclictest0-21swapper/300:00:593
989166992926,2cyclictest0-21swapper/322:35:133
98916699290,28cyclictest0-21swapper/319:45:123
98916699290,27cyclictest0-21swapper/320:15:123
989162992927,1cyclictest0-21swapper/200:25:142
989162992926,2cyclictest0-21swapper/222:45:112
98916299290,27cyclictest0-21swapper/221:17:592
98916299290,27cyclictest0-21swapper/219:30:132
98916299290,1cyclictest0-21swapper/223:34:592
98916199290,27cyclictest714-21Xorg22:10:591
98916699280,2cyclictest0-21swapper/319:35:133
98916699280,27cyclictest0-21swapper/319:40:133
98916699280,27cyclictest0-21swapper/319:40:133
98916699280,1cyclictest0-21swapper/322:20:123
989162992825,2cyclictest0-21swapper/222:30:122
98916299280,2cyclictest0-21swapper/223:40:012
98916299280,27cyclictest0-21swapper/200:00:132
98916299280,26cyclictest0-21swapper/220:25:112
989166992725,1cyclictest0-21swapper/321:50:133
98916299270,25cyclictest0-21swapper/200:05:592
989161992724,2cyclictest1089382-21turbostat00:24:551
4577091270,6ptp4l61490irq/134-eno1-TxRx-019:20:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-000:30:013
4577091270,6ptp4l441ktimers/321:45:013
989166992623,2cyclictest0-21swapper/322:18:003
989162992623,2cyclictest0-21swapper/223:25:122
989162992623,2cyclictest0-21swapper/220:52:592
4577091260,6ptp4l441ktimers/320:55:013
4577091260,5ptp4l61490irq/134-eno1-TxRx-019:25:003
4577091260,5ptp4l441ktimers/300:10:003
4577091260,4ptp4l441ktimers/321:30:003
989166992523,1cyclictest0-21swapper/323:31:593
989166992523,1cyclictest0-21swapper/300:30:133
98916699250,24cyclictest0-21swapper/323:36:583
98916699250,24cyclictest0-21swapper/320:37:003
989162992523,1cyclictest0-21swapper/223:11:592
989162992523,1cyclictest0-21swapper/220:50:002
4577091250,4ptp4l61490irq/134-eno1-TxRx-023:50:023
989166992422,1cyclictest0-21swapper/320:29:553
989162992422,1cyclictest0-21swapper/223:50:002
989162992321,1cyclictest0-21swapper/220:42:592
989162992321,1cyclictest0-21swapper/219:40:012
989162992320,2cyclictest0-21swapper/221:59:582
989162992320,2cyclictest0-21swapper/221:49:002
989162992315,6cyclictest0-21swapper/222:28:592
989162992219,2cyclictest0-21swapper/219:46:592
989162992118,2cyclictest0-21swapper/220:31:582
989161992117,3cyclictest0-21swapper/119:10:021
989162991916,2cyclictest0-21swapper/200:17:592
989158991912,5cyclictest975153-21kworker/u8:3+events_unbound19:10:020
989162991815,2cyclictest0-21swapper/219:10:592
989162991714,2cyclictest0-21swapper/200:35:592
98916299118,2cyclictest0-21swapper/222:52:582
98916299102,1cyclictest0-21swapper/219:25:162
98916299100,2cyclictest0-21swapper/220:55:172
98916299100,2cyclictest0-21swapper/220:55:172
9891629930,2cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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