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2026-09-11 - 10:10
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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 376 highest latencies:
System rackeslot6.osadl.org (updated Fri Sep 11, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
102702099137125,10cyclictest1075239-21latency_hist21:40:010
102702599126120,4cyclictest1065404-21kworker/u8:0+flush-179:022:20:151
102702599124119,4cyclictest1022471-21kworker/u8:3+events_unbound19:50:231
102702099124115,6cyclictest1077102-21latency_hist21:45:010
102702599121116,4cyclictest1047634-21kworker/u8:2+events_unbound20:15:261
102702099121114,5cyclictest1042179-21kworker/u8:0+flush-179:020:30:240
102702599119109,7cyclictest1102820-21latency_hist23:05:011
102702599118113,4cyclictest1065404-21kworker/u8:0+events_unbound22:50:291
1027020991181,115cyclictest1-21systemd22:50:000
102702599115109,4cyclictest1042179-21kworker/u8:0+events_unbound20:30:161
102702099114103,8cyclictest1213033-21systemd-journal20:50:000
102702599113108,4cyclictest1109220-21kworker/u8:3+events_unbound23:30:271
102702599113107,4cyclictest1108640-21kworker/u8:2+events_unbound23:40:171
102702599112100,10cyclictest1112350-21kworker/u8:1+flush-179:023:50:001
102702599111106,3cyclictest1065404-21kworker/u8:0+flush-179:023:25:201
102702099111102,7cyclictest1120374-21kworker/u8:1+flush-179:000:00:020
102702599110105,4cyclictest1070512-21kworker/u8:3+events_unbound21:45:241
102702099110100,7cyclictest1065698-21latency_hist21:10:000
102702599109104,4cyclictest1061151-21kworker/u8:1+events_unbound21:00:221
102702599109102,5cyclictest1065404-21kworker/u8:0+flush-179:022:00:151
10270259910898,7cyclictest1072062-21latency_hist21:30:011
10270209910896,9cyclictest1088234-21latency_hist22:20:020
10270259910793,10cyclictest1055643-21apt-get20:40:001
102702599107102,4cyclictest1065404-21kworker/u8:0+events_unbound23:20:261
102702599107102,4cyclictest1065404-21kworker/u8:0+events_unbound21:10:131
10270209910796,8cyclictest1213033-21systemd-journal22:55:000
102702599106101,4cyclictest1070445-21kworker/u8:2+events_unbound21:50:241
10270209910693,11cyclictest1129945-21apt-get00:30:000
10270259910595,8cyclictest1123816-21apt-get00:10:141
10270259910588,15cyclictest1120311-21latency_hist00:00:021
10270259910494,8cyclictest1213033-21systemd-journal22:50:011
10270259910398,3cyclictest1055055-21kworker/u8:2+events_unbound20:55:201
10270259910397,4cyclictest1093257-21kworker/u8:2+flush-179:022:40:151
10270209910391,10cyclictest1213033-21systemd-journal21:55:010
10270259910196,4cyclictest1047634-21kworker/u8:2+events_unbound20:20:231
10270259910096,3cyclictest1091661-21kworker/u8:3+events_unbound22:34:561
10270259910094,4cyclictest1061151-21kworker/u8:1+events_unbound21:05:171
1027025999994,4cyclictest1065404-21kworker/u8:0+events_unbound22:25:151
1027025999990,3cyclictest1065404-21kworker/u8:0+flush-179:022:35:191
1027025999893,4cyclictest1117159-21kworker/u8:3+events_unbound23:50:261
1027025999793,3cyclictest1128319-21kworker/u8:0+events_unbound00:35:161
1027025999786,9cyclictest1112613-21apt-get23:35:121
1027025999692,3cyclictest1100292-21kworker/u8:1+events_unbound23:05:241
1027025999686,4cyclictest1108640-21kworker/u8:2+events_unbound00:00:121
1027025999591,3cyclictest1128319-21kworker/u8:0+events_unbound00:25:251
1027020999584,9cyclictest1070477-21latency_hist21:25:010
1027025999489,4cyclictest1065404-21kworker/u8:0+events_unbound21:35:211
1027025999485,7cyclictest1028568-21latency_hist19:15:021
1027025999388,4cyclictest1049320-21kworker/u8:3+events_unbound20:25:161
1027020999381,10cyclictest1085306-21apt-get22:10:100
1027025999287,4cyclictest1028544-21kworker/u8:1+events_unbound19:15:201
1027025999282,4cyclictest1039194-21kworker/u8:1+events_unbound20:00:131
1027020999284,7cyclictest1061151-21kworker/u8:1+flush-179:021:00:240
1027020999181,8cyclictest1082407-21kworker/u8:1+flush-179:022:05:000
1027025999086,3cyclictest1065404-21kworker/u8:0+events_unbound22:15:241
1027025999085,3cyclictest1100292-21kworker/u8:1+flush-179:023:10:201
1027025998985,3cyclictest1039194-21kworker/u8:1+events_unbound20:10:201
1027025998984,4cyclictest1022471-21kworker/u8:3+events_unbound19:45:161
1027025998967,20cyclictest1055055-21kworker/u8:2+flush-179:020:50:171
1027020998984,3cyclictest1112350-21kworker/u8:1+flush-179:023:45:140
1027020998982,5cyclictest1047634-21kworker/u8:2+events_unbound20:20:010
1027020998882,4cyclictest1065404-21kworker/u8:0+flush-179:022:55:170
1027025998778,3cyclictest1123596-21kworker/u8:3+events_unbound00:20:191
1027020998675,8cyclictest1078687-21latency_hist21:50:010
1027020998579,4cyclictest1022471-21kworker/u8:3+flush-179:019:10:250
1027025998479,4cyclictest1049320-21kworker/u8:3+events_unbound20:45:211
1027025998475,4cyclictest1082407-21kworker/u8:1+events_unbound22:10:161
1027020998477,5cyclictest1061151-21kworker/u8:1+flush-179:021:15:250
1027020998474,8cyclictest1213033-21systemd-journal19:40:000
1027025998378,3cyclictest1070445-21kworker/u8:2+events_unbound21:55:131
1027020998170,8cyclictest1109185-21latency_hist23:25:010
1027020997970,7cyclictest1093257-21kworker/u8:2+flush-179:022:40:010
1027025997873,4cyclictest1042179-21kworker/u8:0+events_unbound20:40:171
1027025997671,4cyclictest1070445-21kworker/u8:2+events_unbound21:21:161
1027020997667,7cyclictest1213033-21systemd-journal19:20:010
1027025997470,3cyclictest1039194-21kworker/u8:1+flush-179:019:58:161
1027025997464,8cyclictest1032016-21apt-get19:25:111
1027020997470,3cyclictest1032423-21kworker/u8:0+events_unbound19:25:170
1027020997468,5cyclictest1022471-21kworker/u8:3+events_unbound19:55:170
1027020997464,8cyclictest1060782-21gpgv20:55:000
1027020997366,5cyclictest1108640-21kworker/u8:2+flush-179:023:30:180
1027025997268,3cyclictest1065404-21kworker/u8:0+flush-179:022:09:541
1027025997267,4cyclictest1123596-21kworker/u8:3+events_unbound00:17:161
1027025997265,5cyclictest1039194-21kworker/u8:1+events_unbound20:10:001
1027025997167,3cyclictest1119645-21kworker/u8:0+flush-179:000:07:201
1027025997167,3cyclictest1032423-21kworker/u8:0+events_unbound19:41:451
1027025997162,4cyclictest1061151-21kworker/u8:1+events_unbound21:15:181
1027020997161,8cyclictest1213033-21systemd-journal00:20:010
1027020997161,7cyclictest1118720-21latency_hist23:55:010
1027025997065,4cyclictest1022471-21kworker/u8:3+events_unbound19:37:171
1027025996964,4cyclictest1065404-21kworker/u8:0+events_unbound21:32:181
1027025996964,4cyclictest1065404-21kworker/u8:0+events_unbound21:32:181
1027020996957,10cyclictest1072319-21apt-get21:30:120
1027020996957,10cyclictest1072319-21apt-get21:30:120
1027025996861,5cyclictest1070445-21kworker/u8:2+flush-179:021:40:171
1027020996756,9cyclictest1080527-21apt-get21:55:110
1027025996556,7cyclictest1100292-21kworker/u8:1+flush-179:023:20:001
1027030996433,1cyclictest0-21swapper/321:09:593
1027020996461,2cyclictest1042179-21kworker/u8:0+events_unbound20:00:260
1027020996456,6cyclictest1046334-21apt-get20:10:110
1027020996354,7cyclictest1082407-21kworker/u8:1+flush-179:022:05:220
1027025996157,3cyclictest1120374-21kworker/u8:1+flush-179:000:30:271
1027025996153,5cyclictest1101223-21latency_hist23:00:001
1027020996155,4cyclictest1128319-21kworker/u8:0+flush-179:000:30:210
1027020996051,7cyclictest1049320-21kworker/u8:3+flush-179:020:25:210
1027020996051,6cyclictest1125145-21latency_hist00:15:000
1027020995954,4cyclictest1100292-21kworker/u8:1+flush-179:023:10:210
1027020995952,5cyclictest1065404-21kworker/u8:0+events_unbound22:30:240
1027020995949,8cyclictest1213033-21systemd-journal19:35:010
1027025995850,6cyclictest1022471-21kworker/u8:3+events_unbound19:20:221
1027020995854,3cyclictest1055055-21kworker/u8:2+events_unbound20:35:240
231999570,7rtkit-daemon2318-21rtkit-daemon23:05:140
1027020995754,2cyclictest1120374-21kworker/u8:1+events_unbound00:05:240
1027020995753,3cyclictest1112350-21kworker/u8:1+flush-179:023:35:270
1027020995653,2cyclictest1065404-21kworker/u8:0+flush-179:021:10:160
1027020995650,5cyclictest1108640-21kworker/u8:2+flush-179:023:25:230
1027020995448,4cyclictest1055055-21kworker/u8:2+flush-179:020:40:210
1027020995350,2cyclictest1065404-21kworker/u8:0+events_unbound21:25:180
1027029995246,5cyclictest0-21swapper/200:15:592
1027029995047,2cyclictest0-21swapper/222:28:592
1027025994945,3cyclictest1022471-21kworker/u8:3+events_unbound19:33:571
4577091480,13ptp4l441ktimers/319:09:553
1027030994846,1cyclictest0-21swapper/320:51:593
1027020994840,5cyclictest1128319-21kworker/u8:0+flush-179:000:25:000
1027020994839,7cyclictest1039194-21kworker/u8:1+flush-179:019:50:000
1027020994744,2cyclictest1022471-21kworker/u8:3+events_unbound19:50:150
1027030994640,5cyclictest1041306-21turbostat19:55:003
102702099468,3cyclictest1121951-21sshd00:04:010
1027020994641,4cyclictest1128319-21kworker/u8:0+events_unbound00:35:140
1027020994640,5cyclictest1065404-21kworker/u8:0+flush-179:022:20:140
1027020994537,6cyclictest1093257-21kworker/u8:2+flush-179:022:40:220
1027020994433,9cyclictest1114507-21diskstats23:40:150
1027029994340,2cyclictest0-21swapper/223:36:582
102702999430,1cyclictest0-21swapper/200:23:002
1027020994337,5cyclictest1055055-21kworker/u8:2+flush-179:020:55:170
1027020994236,5cyclictest1022471-21kworker/u8:3+events_unbound19:45:000
1027020994210,5cyclictest484-21dbus-daemon23:20:000
102703099410,40cyclictest1057501-21turbostat20:45:003
1027030994033,5cyclictest1039723-21turbostat19:50:003
102703099400,4cyclictest1093277-21turbostat22:35:003
102703099400,39cyclictest1038134-21turbostat19:45:003
1027029994037,2cyclictest0-21swapper/219:33:592
102703099390,4cyclictest1088266-21turbostat22:20:013
102703099390,1cyclictest0-21swapper/322:45:593
1027029993935,2cyclictest0-21swapper/222:06:592
1027020993933,5cyclictest1039194-21kworker/u8:1+flush-179:020:05:220
1027029993835,2cyclictest0-21swapper/221:42:592
102702999380,36cyclictest0-21swapper/223:23:582
102702999380,36cyclictest0-21swapper/200:36:002
102702999380,35cyclictest0-21swapper/219:43:582
1027020993830,6cyclictest1086103-21kworker/u8:2+events_unbound22:25:240
1027020993829,8cyclictest0-21swapper/020:20:130
1027030993735,1cyclictest0-21swapper/300:16:003
1027030993734,2cyclictest0-21swapper/320:08:003
102702999370,35cyclictest0-21swapper/222:20:592
102702999370,35cyclictest0-21swapper/220:46:592
102702999370,35cyclictest0-21swapper/220:21:592
1027020993731,4cyclictest321-21hwrng19:21:590
1027030993634,1cyclictest0-21swapper/323:50:593
1027030993634,1cyclictest0-21swapper/319:34:003
1027030993633,2cyclictest0-21swapper/321:50:593
1027029993633,2cyclictest0-21swapper/222:44:562
1027029993633,2cyclictest0-21swapper/220:27:002
102702999360,1cyclictest0-21swapper/220:20:002
1027030993533,1cyclictest0-21swapper/323:10:593
1027030993532,2cyclictest0-21swapper/320:19:593
102703099350,1cyclictest0-21swapper/322:54:553
1027029993532,2cyclictest0-21swapper/222:04:542
1027029993532,2cyclictest0-21swapper/221:28:592
1027029993532,2cyclictest0-21swapper/220:43:592
102702999350,1cyclictest0-21swapper/200:00:002
1027030993432,1cyclictest0-21swapper/300:05:593
1027029993431,2cyclictest0-21swapper/219:38:002
102702999340,2cyclictest0-21swapper/219:50:132
102702999340,27cyclictest0-21swapper/200:30:012
102702999340,26cyclictest0-21swapper/200:30:012
1027030993331,1cyclictest0-21swapper/322:13:583
1027030993331,1cyclictest0-21swapper/321:46:003
1027030993330,2cyclictest0-21swapper/321:41:593
1027029993330,2cyclictest0-21swapper/219:48:592
1027030993230,1cyclictest0-21swapper/321:57:593
1027030993230,1cyclictest0-21swapper/321:13:593
1027029993225,6cyclictest0-21swapper/223:15:112
1027030993129,1cyclictest0-21swapper/323:32:593
1027030993129,1cyclictest0-21swapper/323:03:593
1027030993129,1cyclictest0-21swapper/300:03:003
1027029993129,1cyclictest0-21swapper/223:35:002
1027029993128,2cyclictest0-21swapper/221:57:592
1027029993128,2cyclictest0-21swapper/220:09:552
1027029993125,5cyclictest0-21swapper/219:25:122
4577091300,7ptp4l441ktimers/323:50:013
1027030993028,1cyclictest0-21swapper/319:55:593
1027029993027,2cyclictest0-21swapper/220:55:132
1027029993027,2cyclictest0-21swapper/200:00:142
102702999300,2cyclictest0-21swapper/220:30:132
1027030992927,1cyclictest0-21swapper/320:14:553
1027030992927,1cyclictest0-21swapper/319:38:593
102703099290,27cyclictest0-21swapper/323:05:143
102703099290,27cyclictest0-21swapper/320:35:133
102703099290,1cyclictest0-21swapper/322:25:133
1027029992926,2cyclictest0-21swapper/223:45:132
1027029992926,2cyclictest0-21swapper/222:45:152
1027029992926,2cyclictest0-21swapper/220:54:552
1027029992926,2cyclictest0-21swapper/220:10:142
102702999290,27cyclictest0-21swapper/223:40:122
102702999290,27cyclictest0-21swapper/221:35:142
102702999290,27cyclictest0-21swapper/221:15:142
1027020992925,3cyclictest1027143-21latency_hist19:10:020
1027030992826,1cyclictest0-21swapper/320:45:133
1027030992826,1cyclictest0-21swapper/319:28:583
1027030992826,1cyclictest0-21swapper/300:35:143
1027030992825,2cyclictest0-21swapper/323:56:593
102703099280,27cyclictest0-21swapper/323:40:593
102703099280,27cyclictest0-21swapper/300:20:133
102703099280,26cyclictest0-21swapper/323:25:133
102703099280,26cyclictest0-21swapper/322:05:143
102703099280,26cyclictest0-21swapper/300:10:153
1027029992825,2cyclictest0-21swapper/222:50:162
1027029992825,2cyclictest0-21swapper/222:35:142
1027029992825,2cyclictest0-21swapper/220:37:592
1027029992825,2cyclictest0-21swapper/220:00:132
1027029992823,4cyclictest0-21swapper/219:10:132
1027029992821,6cyclictest0-21swapper/222:58:592
102702999280,2cyclictest0-21swapper/200:05:142
102702999280,26cyclictest0-21swapper/221:02:592
1027020992810,6cyclictest1102751-21grep23:00:260
4577091270,6ptp4l441ktimers/323:39:593
4577091270,6ptp4l441ktimers/322:25:003
4577091270,6ptp4l441ktimers/300:29:543
4577091270,5ptp4l441ktimers/320:35:013
4577091270,5ptp4l441ktimers/320:25:023
1027030992725,1cyclictest0-21swapper/321:00:123
102703099270,26cyclictest0-21swapper/322:55:143
1027029992724,2cyclictest0-21swapper/222:32:592
1027029992724,2cyclictest0-21swapper/222:11:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-020:05:003
4577091260,6ptp4l441ktimers/321:35:003
4577091260,6ptp4l441ktimers/321:35:003
4577091260,5ptp4l61490irq/134-eno1-TxRx-022:04:553
4577091260,5ptp4l441ktimers/320:30:013
4577091260,5ptp4l441ktimers/300:34:563
4577091260,4ptp4l441ktimers/321:30:013
1027029992624,1cyclictest0-21swapper/219:59:582
1027029992623,2cyclictest0-21swapper/219:24:552
1027029992623,2cyclictest0-21swapper/200:11:582
4577091250,5ptp4l61490irq/134-eno1-TxRx-023:25:003
4577091250,5ptp4l61490irq/134-eno1-TxRx-021:25:013
4577091250,4ptp4l441ktimers/321:39:553
4577091250,4ptp4l441ktimers/321:19:553
1027030992523,1cyclictest0-21swapper/323:15:593
102703099250,24cyclictest0-21swapper/322:35:593
102703099250,24cyclictest0-21swapper/320:59:553
1027029992523,1cyclictest0-21swapper/223:10:592
1027029992523,1cyclictest0-21swapper/221:45:132
1027029992523,1cyclictest0-21swapper/221:35:002
1027029992523,1cyclictest0-21swapper/221:35:002
1027029992523,1cyclictest0-21swapper/219:19:592
1027029992522,2cyclictest0-21swapper/223:51:002
1027029992522,2cyclictest0-21swapper/223:01:002
1027029992522,2cyclictest0-21swapper/221:22:592
4577091240,4ptp4l61490irq/134-eno1-TxRx-019:19:573
4577091240,4ptp4l441ktimers/319:24:553
1027030992422,1cyclictest0-21swapper/319:14:583
102702599241,3cyclictest281ktimers/119:10:021
1027030992321,1cyclictest0-21swapper/322:42:593
1027029992321,1cyclictest0-21swapper/221:09:592
1027029991815,2cyclictest0-21swapper/221:12:592
1027029991715,1cyclictest0-21swapper/223:25:122
1027029991714,2cyclictest0-21swapper/223:09:552
1027029991714,2cyclictest0-21swapper/222:15:592
1027029991412,1cyclictest0-21swapper/221:55:012
10270299920,1cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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