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2026-09-03 - 13:31
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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 Sep 03, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9964499167153,11cyclictest107504-21apt-get19:35:031
9964499137130,5cyclictest135570-21kworker/u8:2+events_unbound21:00:001
9964499132123,7cyclictest193504-21kworker/u8:3+flush-179:000:35:001
9964499131123,5cyclictest93346-21kworker/u8:1+events_unbound19:15:231
9964499131122,7cyclictest164266-21latency_hist22:30:011
9964499130124,5cyclictest175916-21kworker/u8:2+flush-179:023:35:251
9964499127123,3cyclictest191824-21kworker/u8:2+flush-179:023:55:231
9964499127121,5cyclictest106951-21kworker/u8:1+flush-179:020:00:001
9964499125115,8cyclictest127391-21apt-get20:35:001
9964299124115,7cyclictest1213033-21systemd-journal23:50:230
9964499120107,3cyclictest182349-21kworker/u8:0+events_unbound23:30:241
9964499119107,10cyclictest99490-21kworker/u8:0+events_unbound20:10:121
9964499118110,6cyclictest165833-21kworker/u8:2+events_unbound22:50:231
9964499117110,5cyclictest135570-21kworker/u8:2+flush-179:021:05:211
9964499116110,4cyclictest165833-21kworker/u8:2+events_unbound22:45:211
9964499115110,3cyclictest135570-21kworker/u8:2+flush-179:021:15:171
9964499114108,5cyclictest99490-21kworker/u8:0+flush-179:019:50:011
9964499114104,7cyclictest106951-21kworker/u8:1+flush-179:020:50:251
996429911395,14cyclictest114391-21apt-get19:55:010
9964499112105,5cyclictest155252-21kworker/u8:0+flush-179:022:05:231
9964499111105,4cyclictest165833-21kworker/u8:2+flush-179:022:35:161
996429911096,10cyclictest174094-21latency_hist23:00:010
9964499109103,4cyclictest165833-21kworker/u8:2+flush-179:022:55:211
9964499109100,6cyclictest141940-21kworker/u8:0+events_unbound21:30:151
996429910998,8cyclictest193434-40logrotate00:00:010
996449910894,11cyclictest1213033-21systemd-journal22:15:011
9964499108102,4cyclictest99490-21kworker/u8:0+events_unbound20:15:241
996449910799,6cyclictest99490-21kworker/u8:0+events_unbound19:50:231
9964499107101,4cyclictest142021-21kworker/u8:1+events_unbound21:55:011
996449910699,5cyclictest99490-21kworker/u8:0+flush-179:019:30:241
996449910699,5cyclictest193504-21kworker/u8:3+events_unbound00:10:151
996449910699,5cyclictest193504-21kworker/u8:3+events_unbound00:10:141
996449910698,5cyclictest174040-21kworker/u8:0+events_unbound23:00:221
996449910697,7cyclictest185514-21kworker/u8:1+flush-179:000:00:211
996449910597,4cyclictest193504-21kworker/u8:3+events_unbound00:15:151
996449910589,13cyclictest99490-21kworker/u8:0+flush-179:019:20:201
996429910593,10cyclictest201480-21apt-get00:24:590
996449910395,6cyclictest99490-21kworker/u8:0+events_unbound19:40:241
996449910293,7cyclictest106951-21kworker/u8:1+events_unbound20:25:121
996449910293,6cyclictest165833-21kworker/u8:2+flush-179:022:40:161
996429910288,10cyclictest175916-21kworker/u8:2+flush-179:023:15:000
996449910194,5cyclictest182349-21kworker/u8:0+events_unbound23:50:241
996449910088,10cyclictest150197-21apt-get21:45:111
996429910091,3cyclictest193504-21kworker/u8:3+flush-179:000:25:160
99644999992,5cyclictest203555-21kworker/u8:1+flush-179:000:35:261
99644999992,5cyclictest193504-21kworker/u8:3+events_unbound00:05:291
99644999989,7cyclictest106951-21kworker/u8:1+flush-179:020:40:201
99644999892,4cyclictest151564-21kworker/u8:3+events_unbound22:15:221
99642999784,10cyclictest106951-21kworker/u8:1+flush-179:019:35:010
99644999687,7cyclictest135570-21kworker/u8:2+flush-179:021:15:001
99644999685,9cyclictest122873-21apt-get20:20:111
99642999684,8cyclictest156312-21latency_hist22:05:010
99642999588,5cyclictest99490-21kworker/u8:0+flush-179:019:25:150
99642999580,10cyclictest185514-21kworker/u8:1+flush-179:000:15:010
99642999580,10cyclictest185514-21kworker/u8:1+flush-179:000:15:010
99644999488,4cyclictest175916-21kworker/u8:2+flush-179:023:40:231
99644999486,5cyclictest122579-21kworker/u8:3+flush-179:020:35:021
99644999486,5cyclictest118377-21kworker/u8:2+flush-179:020:05:251
99644999485,6cyclictest161130-21kworker/u8:1+events_unbound22:20:191
99644999387,4cyclictest141940-21kworker/u8:0+events_unbound21:25:181
99644999287,4cyclictest135570-21kworker/u8:2+events_unbound21:00:181
99644999283,6cyclictest161130-21kworker/u8:1+flush-179:023:10:251
99644999179,9cyclictest1213033-21systemd-journal23:15:231
99644999081,6cyclictest154719-21latency_hist22:00:011
99644999081,6cyclictest142021-21kworker/u8:1+flush-179:021:40:211
99644998881,5cyclictest99490-21kworker/u8:0+flush-179:019:25:201
99642998881,5cyclictest142242-21apt-get21:20:130
99642998881,5cyclictest142242-21apt-get21:20:130
99642998880,6cyclictest182560-21apt-get23:25:120
99642998774,10cyclictest1213033-21systemd-journal19:55:010
99644998680,4cyclictest175916-21kworker/u8:2+flush-179:023:25:191
99644998675,8cyclictest175916-21kworker/u8:2+events_unbound23:20:281
99642998680,4cyclictest81285-21kworker/u8:2+flush-179:019:10:160
99642998679,5cyclictest106951-21kworker/u8:1+flush-179:020:45:230
99642998677,6cyclictest121007-21latency_hist20:15:000
99642998676,8cyclictest106951-21kworker/u8:1+events_unbound20:25:220
99642998474,7cyclictest129243-21latency_hist20:40:000
99642998469,11cyclictest1213033-21systemd-journal21:54:550
99644998377,5cyclictest155252-21kworker/u8:0+flush-179:022:00:251
99644998374,7cyclictest164810-21diskstats22:30:151
99642998371,9cyclictest161350-21apt-get22:20:110
99644998277,4cyclictest193504-21kworker/u8:3+flush-179:000:25:211
99644998277,4cyclictest141940-21kworker/u8:0+flush-179:021:20:271
99644998277,4cyclictest141940-21kworker/u8:0+flush-179:021:20:261
99644998276,4cyclictest106951-21kworker/u8:1+flush-179:020:45:221
99642998168,9cyclictest99490-21kworker/u8:0+events_unbound19:20:150
99644998074,5cyclictest93346-21kworker/u8:1+events_unbound19:10:251
99642998070,7cyclictest182349-21kworker/u8:0+flush-179:023:30:190
99644997874,3cyclictest142021-21kworker/u8:1+flush-179:021:35:241
99642997869,6cyclictest161087-21latency_hist22:20:010
99642997865,9cyclictest175970-21kworker/u8:3+events_unbound23:15:120
99642997769,5cyclictest106951-21kworker/u8:1+flush-179:020:50:210
99642997569,4cyclictest188928-21apt-get23:45:110
99642997566,7cyclictest185514-21kworker/u8:1+events_unbound00:05:010
99642997466,6cyclictest157897-21latency_hist22:10:010
99642997441,16cyclictest106951-21kworker/u8:1+flush-179:020:05:250
99644997266,4cyclictest106951-21kworker/u8:1+flush-179:020:00:161
99642997261,10cyclictest161130-21kworker/u8:1+events_unbound23:05:240
99642997259,10cyclictest109347-21latency_hist19:40:020
99642997160,8cyclictest140631-21apt-get21:15:130
99642997068,1cyclictest135570-21kworker/u8:2+events_unbound21:05:230
99642997061,6cyclictest185514-21kworker/u8:1+flush-179:000:15:240
99642997061,6cyclictest142021-21kworker/u8:1+flush-179:021:35:150
99642996956,9cyclictest106951-21kworker/u8:1+flush-179:020:00:200
99642996955,11cyclictest142021-21kworker/u8:1+flush-179:021:50:000
99642996856,9cyclictest106951-21kworker/u8:1+flush-179:020:45:000
99642996760,5cyclictest135870-21apt-get21:00:120
99642996758,7cyclictest99490-21kworker/u8:0+flush-179:019:40:020
99644996655,4cyclictest193504-21kworker/u8:3+events_unbound00:20:141
99642996660,3cyclictest141940-21kworker/u8:0+events_unbound21:30:190
99642996652,11cyclictest1213033-21systemd-journal20:25:010
99644996558,5cyclictest161130-21kworker/u8:1+events_unbound23:05:201
99642996458,4cyclictest142021-21kworker/u8:1+events_unbound21:40:220
99646996259,2cyclictest0-21swapper/220:10:592
99642996252,8cyclictest121549-21diskstats20:15:140
99642996154,4cyclictest161130-21kworker/u8:1+events_unbound22:25:230
99642996151,7cyclictest203555-21kworker/u8:1+flush-179:000:40:000
99642996049,8cyclictest106951-21kworker/u8:1+flush-179:020:55:150
99642995852,5cyclictest165833-21kworker/u8:2+flush-179:022:35:220
99642995848,8cyclictest168266-21diskstats22:40:170
99642995847,8cyclictest165845-21anacron22:34:230
99642995752,4cyclictest111462-21apt-get19:45:130
99642995648,6cyclictest165833-21kworker/u8:2+flush-179:022:45:220
99642995646,7cyclictest151564-21kworker/u8:3+events_unbound21:55:150
99642995545,8cyclictest1213033-21systemd-journal20:31:220
9964299531,29cyclictest187343-21apt-get23:40:130
99642995245,5cyclictest165833-21kworker/u8:2+flush-179:022:50:160
99642995243,6cyclictest151564-21kworker/u8:3+flush-179:022:10:260
99642995042,6cyclictest1213033-21systemd-journal21:29:230
99642994943,5cyclictest193504-21kworker/u8:3+flush-179:000:30:220
99642994942,5cyclictest99490-21kworker/u8:0+flush-179:019:15:160
99642994841,5cyclictest175970-21kworker/u8:3+flush-179:023:22:240
99642994837,9cyclictest195358-21apt-get00:05:150
4577091480,13ptp4l61490irq/134-eno1-TxRx-019:09:553
99650994336,5cyclictest157910-21turbostat22:10:003
9964299420,27cyclictest0-21swapper/023:00:110
99642994034,5cyclictest135650-21kworker/u8:3+flush-179:021:10:220
9965099390,4cyclictest149958-21turbostat21:45:003
99646993936,2cyclictest0-21swapper/219:14:562
99646993935,2cyclictest0-21swapper/200:21:592
9964699380,35cyclictest0-21swapper/220:54:552
99644993831,5cyclictest185514-21kworker/u8:1+events_unbound23:45:101
99646993734,2cyclictest0-21swapper/220:32:592
99646993734,2cyclictest0-21swapper/219:44:002
99646993734,2cyclictest0-21swapper/200:08:592
9964699370,2cyclictest0-21swapper/220:36:592
99650993634,1cyclictest0-21swapper/323:54:593
99650993633,2cyclictest0-21swapper/320:52:593
99650993633,2cyclictest0-21swapper/319:45:593
9965099360,35cyclictest0-21swapper/322:33:593
9965099360,35cyclictest0-21swapper/322:29:553
9965099360,35cyclictest0-21swapper/321:31:593
9965099360,35cyclictest0-21swapper/321:23:593
9965099360,35cyclictest0-21swapper/321:23:593
9965099360,35cyclictest0-21swapper/319:55:583
99646993634,1cyclictest0-21swapper/222:05:002
99646993633,2cyclictest0-21swapper/221:36:592
99646993632,2cyclictest0-21swapper/200:16:592
99650993532,2cyclictest0-21swapper/323:27:003
9965099350,1cyclictest0-21swapper/323:24:593
4577091350,27ptp4l61490irq/134-eno1-TxRx-022:20:123
99650993431,2cyclictest0-21swapper/319:26:583
99650993331,1cyclictest0-21swapper/320:37:593
99650993331,1cyclictest0-21swapper/319:54:553
99650993330,2cyclictest0-21swapper/322:15:593
99650993330,2cyclictest0-21swapper/319:24:593
99646993331,1cyclictest0-21swapper/220:04:592
99646993330,2cyclictest0-21swapper/223:08:582
99646993330,2cyclictest0-21swapper/222:48:592
99646993330,2cyclictest0-21swapper/221:19:002
99642993326,5cyclictest175916-21kworker/u8:2+flush-179:023:35:150
99650993230,1cyclictest0-21swapper/321:28:593
99650993229,2cyclictest0-21swapper/300:28:003
99650993228,2cyclictest0-21swapper/320:21:003
9965099310,29cyclictest0-21swapper/323:15:103
99646993128,2cyclictest0-21swapper/220:44:552
99646993128,2cyclictest0-21swapper/219:36:582
99646993128,2cyclictest0-21swapper/219:29:552
99646993127,2cyclictest0-21swapper/220:15:592
99650993028,1cyclictest0-21swapper/322:51:593
99650993028,1cyclictest0-21swapper/320:55:593
9965099300,29cyclictest0-21swapper/323:46:593
9965099300,29cyclictest0-21swapper/321:00:133
9965099300,27cyclictest0-21swapper/323:05:123
9964699300,2cyclictest0-21swapper/223:55:122
9964699300,2cyclictest0-21swapper/219:55:012
9964699300,28cyclictest0-21swapper/219:57:002
99650992927,1cyclictest0-21swapper/322:37:593
99650992927,1cyclictest0-21swapper/321:15:593
99650992927,1cyclictest0-21swapper/321:09:583
99650992927,1cyclictest0-21swapper/320:11:593
99650992927,1cyclictest0-21swapper/319:40:023
99650992927,1cyclictest0-21swapper/300:05:163
99650992923,4cyclictest206585-21turbostat00:40:003
9965099290,28cyclictest0-21swapper/322:55:133
9965099290,28cyclictest0-21swapper/300:00:013
9965099290,27cyclictest0-21swapper/320:35:003
99646992927,1cyclictest0-21swapper/223:04:592
99646992926,2cyclictest0-21swapper/221:10:132
99646992926,2cyclictest0-21swapper/220:23:582
9964699290,28cyclictest0-21swapper/222:25:122
9964699290,28cyclictest0-21swapper/222:20:122
9964699290,27cyclictest0-21swapper/223:50:132
9964699290,27cyclictest0-21swapper/223:10:182
9964699290,27cyclictest0-21swapper/220:45:132
9964699290,27cyclictest0-21swapper/219:15:122
9964699290,1cyclictest0-21swapper/221:05:132
4577091290,6ptp4l441ktimers/323:40:003
99650992826,1cyclictest0-21swapper/321:50:183
99650992826,1cyclictest0-21swapper/321:46:593
99650992826,1cyclictest0-21swapper/320:40:143
99650992825,2cyclictest0-21swapper/323:00:013
99650992825,2cyclictest0-21swapper/322:45:133
99650992825,2cyclictest0-21swapper/300:25:003
9965099280,27cyclictest0-21swapper/322:40:023
9965099280,26cyclictest0-21swapper/321:10:143
9965099280,26cyclictest0-21swapper/320:05:183
9965099280,26cyclictest0-21swapper/319:35:033
9965099280,26cyclictest0-21swapper/319:15:133
99646992825,2cyclictest0-21swapper/222:35:132
99646992825,2cyclictest0-21swapper/219:20:132
99646992825,2cyclictest0-21swapper/200:35:152
9964699280,2cyclictest0-21swapper/222:30:122
9964699280,2cyclictest0-21swapper/221:45:122
9964699280,26cyclictest0-21swapper/223:38:592
9964699280,26cyclictest0-21swapper/222:58:002
9964699280,26cyclictest0-21swapper/222:15:112
9964699280,26cyclictest0-21swapper/221:55:132
9964699280,26cyclictest0-21swapper/220:56:592
9964699280,1cyclictest0-21swapper/222:50:132
4577091280,6ptp4l61490irq/134-eno1-TxRx-022:15:013
9965099270,26cyclictest0-21swapper/300:00:023
99646992724,2cyclictest0-21swapper/219:30:592
9964699270,2cyclictest0-21swapper/221:27:592
9964699270,24cyclictest0-21swapper/222:44:592
4577091270,6ptp4l61490irq/134-eno1-TxRx-020:20:003
4577091270,6ptp4l441ktimers/323:15:003
4577091270,6ptp4l441ktimers/321:40:003
4577091270,6ptp4l441ktimers/319:34:563
4577091270,5ptp4l61490irq/134-eno1-TxRx-020:29:563
4577091270,5ptp4l441ktimers/322:05:003
4577091270,5ptp4l441ktimers/300:14:573
4577091270,5ptp4l441ktimers/300:14:573
99650992624,1cyclictest0-21swapper/319:11:593
9965099260,1cyclictest0-21swapper/320:47:593
99646992623,2cyclictest0-21swapper/222:05:592
99646992623,2cyclictest0-21swapper/221:20:592
99646992623,2cyclictest0-21swapper/221:20:592
99646992623,2cyclictest0-21swapper/220:05:162
99646992622,2cyclictest0-21swapper/223:28:002
9964699260,2cyclictest0-21swapper/223:32:592
9964699260,24cyclictest0-21swapper/219:45:152
4577091260,5ptp4l61490irq/134-eno1-TxRx-021:59:563
4577091260,5ptp4l61490irq/134-eno1-TxRx-000:35:013
4577091260,5ptp4l441ktimers/323:34:563
4577091260,4ptp4l441ktimers/300:20:003
99646992522,2cyclictest0-21swapper/221:01:002
4577091250,4ptp4l441ktimers/323:44:563
99646992421,2cyclictest0-21swapper/223:20:582
99646992321,1cyclictest0-21swapper/223:45:002
99646992220,1cyclictest0-21swapper/222:11:592
99644992216,4cyclictest0-21swapper/119:10:011
231999220,13rtkit-daemon659750-21ntpd19:06:070
99646992118,2cyclictest0-21swapper/223:47:592
99650992018,1cyclictest0-21swapper/320:03:593
99646992018,1cyclictest0-21swapper/221:54:592
99646992017,2cyclictest0-21swapper/221:32:592
99646992017,2cyclictest0-21swapper/200:03:592
99646991916,2cyclictest0-21swapper/223:15:112
9964699129,2cyclictest0-21swapper/200:28:592
9964699129,2cyclictest0-21swapper/200:14:562
9964699129,2cyclictest0-21swapper/200:14:552
9964699118,2cyclictest0-21swapper/221:43:592
9964699107,2cyclictest0-21swapper/200:30:142
9964699100,7cyclictest0-21swapper/220:30:012
996469930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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