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2026-06-28 - 20:37
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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 Sun Jun 28, 2026 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17805799130119,8cyclictest203725-21latency_hist08:30:010
17806199126115,8cyclictest276688-21latency_hist12:15:011
17805799121111,7cyclictest198942-21latency_hist08:15:000
17806199120113,6cyclictest226228-21kworker/u8:0+flush-179:010:00:011
17806199115108,5cyclictest226228-21kworker/u8:0+events_unbound09:45:001
17806199112106,4cyclictest177988-21kworker/u8:2+flush-179:007:25:251
1780579911299,10cyclictest1213033-21systemd-journal12:25:000
1780619910790,5cyclictest236373-21kworker/u8:1+events_unbound10:45:001
17806199107100,4cyclictest241156-21kworker/u8:2+events_unbound10:30:241
17806199106101,4cyclictest236373-21kworker/u8:1+flush-179:010:35:261
1780619910495,6cyclictest215131-21latency_hist09:05:011
1780619910397,4cyclictest210332-21kworker/u8:1+events_unbound08:50:221
1780619910394,7cyclictest268478-21latency_hist11:50:001
1780619910194,5cyclictest241156-21kworker/u8:2+events_unbound10:30:021
1780619910194,5cyclictest241156-21kworker/u8:2+events_unbound10:30:011
1780619910095,4cyclictest268512-21kworker/u8:3+events_unbound12:00:241
1780619910095,4cyclictest265274-21kworker/u8:2+flush-179:012:25:261
1780619910093,6cyclictest241156-21kworker/u8:2+events_unbound10:25:011
1780619910093,6cyclictest241156-21kworker/u8:2+events_unbound10:25:011
1780619910093,5cyclictest254195-21kworker/u8:0+flush-179:011:25:211
1780619910089,8cyclictest192833-21apt-get07:55:121
178061999992,5cyclictest276721-21kworker/u8:0+events_unbound12:20:171
178061999991,6cyclictest249414-21kworker/u8:0+flush-179:010:50:251
178057999993,4cyclictest177988-21kworker/u8:2+events_unbound07:35:210
178057999993,4cyclictest177988-21kworker/u8:2+events_unbound07:35:200
178057999889,7cyclictest262112-21latency_hist11:30:010
178057999888,7cyclictest233451-21kworker/u8:1+flush-179:010:00:250
178061999788,6cyclictest225189-21latency_hist09:35:011
178057999585,7cyclictest265274-21kworker/u8:2+flush-179:012:10:140
178061999488,4cyclictest268512-21kworker/u8:3+flush-179:012:05:251
178061999486,6cyclictest216954-21kworker/u8:2+flush-179:009:10:201
178057999382,8cyclictest255745-21latency_hist11:10:000
178061999287,3cyclictest257318-21kworker/u8:1+flush-179:011:20:151
178061999282,7cyclictest241156-21kworker/u8:2+flush-179:010:45:211
178061999185,4cyclictest257318-21kworker/u8:1+flush-179:011:50:201
178061999083,5cyclictest257318-21kworker/u8:1+events_unbound11:55:141
178061998984,4cyclictest187594-21kworker/u8:0+flush-179:008:04:551
178061998983,4cyclictest216954-21kworker/u8:2+events_unbound09:15:241
178061998980,6cyclictest200588-21kworker/u8:1+flush-179:008:30:211
178057998979,7cyclictest241156-21kworker/u8:2+events_unbound10:45:240
178061998881,6cyclictest283311-21kworker/u8:2+flush-179:012:40:001
178061998881,5cyclictest163642-21kworker/u8:1+flush-179:007:10:161
178061998781,5cyclictest265274-21kworker/u8:2+flush-179:012:15:221
178061998780,5cyclictest185916-21kworker/u8:3+events_unbound07:50:131
178061998779,6cyclictest236373-21kworker/u8:1+flush-179:010:10:001
178061998777,8cyclictest179815-21apt-get07:15:121
178057998758,28cyclictest0-21swapper/008:50:590
178057998575,7cyclictest200585-21kworker/u8:0+flush-179:008:20:220
178061998479,4cyclictest195806-21kworker/u8:3+flush-179:008:09:561
178057998472,8cyclictest185916-21kworker/u8:3+flush-179:007:50:210
178061998378,4cyclictest241156-21kworker/u8:2+events_unbound11:15:011
178057998373,7cyclictest254195-21kworker/u8:0+events_unbound11:40:000
178061998276,5cyclictest203701-21kworker/u8:2+events_unbound08:35:291
178061998276,4cyclictest226228-21kworker/u8:0+events_unbound09:45:171
178061998272,7cyclictest177988-21kworker/u8:2+events_unbound07:30:221
178061998177,3cyclictest254195-21kworker/u8:0+flush-179:011:30:271
178061998076,3cyclictest234785-21kworker/u8:3+flush-179:010:10:151
178061998074,4cyclictest241156-21kworker/u8:2+flush-179:011:15:201
178061997971,5cyclictest200585-21kworker/u8:0+events_unbound08:25:201
178061997868,8cyclictest189157-21apt-get07:45:001
178061997772,4cyclictest205302-21kworker/u8:3+flush-179:008:45:271
178061997772,4cyclictest200585-21kworker/u8:0+flush-179:008:20:251
178061997770,5cyclictest226228-21kworker/u8:0+flush-179:009:50:211
178057997770,5cyclictest222251-21kworker/u8:1+events_unbound09:35:230
178057997770,5cyclictest222251-21kworker/u8:1+events_unbound09:35:230
178057997769,6cyclictest182756-21latency_hist07:25:010
178057997767,7cyclictest205302-21kworker/u8:3+flush-179:008:45:230
178057997766,8cyclictest226228-21kworker/u8:0+flush-179:009:45:220
178057997765,6cyclictest203701-21kworker/u8:2+events_unbound08:35:200
178061997670,5cyclictest246167-21kworker/u8:3+events_unbound11:10:011
178061997661,12cyclictest1213033-21systemd-journal08:15:151
178057997670,4cyclictest241156-21kworker/u8:2+flush-179:011:00:160
178057997669,5cyclictest257318-21kworker/u8:1+events_unbound12:00:000
178057997668,5cyclictest200538-21latency_hist08:20:010
178061997569,4cyclictest281453-21kworker/u8:3+events_unbound12:30:231
178061997568,4cyclictest187564-21latency_hist07:40:011
178061997568,4cyclictest187564-21latency_hist07:40:011
178061997367,4cyclictest216954-21kworker/u8:2+events_unbound09:25:171
178061997366,4cyclictest265274-21kworker/u8:2+events_unbound11:40:171
178061997360,11cyclictest163642-21kworker/u8:1+flush-179:007:20:201
178057997368,3cyclictest208772-21cron08:45:000
178057997365,6cyclictest216954-21kworker/u8:2+flush-179:009:15:220
178057997364,7cyclictest257318-21kworker/u8:1+flush-179:012:00:170
178061997266,4cyclictest205302-21kworker/u8:3+flush-179:008:45:001
178057997262,8cyclictest1213033-21systemd-journal09:10:000
178061997159,6cyclictest214539-21kworker/u8:0+events_unbound09:05:151
178057997062,6cyclictest210332-21kworker/u8:1+events_unbound09:00:000
178057997060,7cyclictest279873-21kworker/u8:1+flush-179:012:35:140
178057997049,6cyclictest283320-21latency_hist12:35:010
178057996966,2cyclictest1-21systemd08:05:000
178061996863,4cyclictest222251-21kworker/u8:1+events_unbound09:35:251
178061996863,4cyclictest222251-21kworker/u8:1+events_unbound09:35:251
178061996861,5cyclictest192561-21kworker/u8:1+events_unbound08:10:171
178061996859,7cyclictest241156-21kworker/u8:2+events_unbound11:00:191
178057996859,7cyclictest265274-21kworker/u8:2+flush-179:012:25:220
178057996856,9cyclictest1213033-21systemd-journal11:00:000
178057996843,6cyclictest190991-21latency_hist07:50:010
178061996755,10cyclictest1213033-21systemd-journal09:25:001
178061996658,6cyclictest189944-21diskstats07:45:141
178061996658,5cyclictest236373-21kworker/u8:1+events_unbound10:15:251
178057996458,4cyclictest241156-21kworker/u8:2+events_unbound11:15:230
178057996458,4cyclictest234785-21kworker/u8:3+flush-179:010:10:210
178057996453,8cyclictest257318-21kworker/u8:1+flush-179:011:50:190
178066996357,4cyclictest198955-21turbostat08:15:003
178057996360,2cyclictest0-21swapper/012:19:000
178057996354,7cyclictest275103-21latency_hist12:10:000
178066996255,5cyclictest244608-21turbostat10:34:593
178061996256,4cyclictest257318-21kworker/u8:1+events_unbound11:35:191
178057996256,5cyclictest177988-21kworker/u8:2+flush-179:007:15:250
178057996255,4cyclictest236373-21kworker/u8:1+events_unbound10:25:150
178057996255,4cyclictest236373-21kworker/u8:1+events_unbound10:25:150
178057996154,5cyclictest246167-21kworker/u8:3+flush-179:011:10:240
178057996054,5cyclictest216954-21kworker/u8:2+flush-179:009:10:220
178057996053,4cyclictest197357-21latency_hist08:10:000
178061995954,4cyclictest205302-21kworker/u8:3+events_unbound08:55:221
178057995953,4cyclictest177988-21kworker/u8:2+events_unbound07:30:230
178057995851,5cyclictest236373-21kworker/u8:1+flush-179:010:35:170
178057995752,3cyclictest210332-21kworker/u8:1+flush-179:009:05:000
178057995652,3cyclictest216954-21kworker/u8:2+flush-179:009:55:220
178057995651,4cyclictest163642-21kworker/u8:1+flush-179:007:10:240
178057995650,4cyclictest236373-21kworker/u8:1+events_unbound10:15:200
178057995649,5cyclictest254195-21kworker/u8:0+flush-179:011:30:220
178057995647,6cyclictest222251-21kworker/u8:1+events_unbound09:40:140
178057995347,5cyclictest220464-21kworker/u8:0+events_unbound09:20:220
178057995247,3cyclictest241156-21kworker/u8:2+flush-179:010:30:200
178057995145,4cyclictest236373-21kworker/u8:1+events_unbound10:20:230
178057995145,4cyclictest236373-21kworker/u8:1+events_unbound10:20:220
178057995143,6cyclictest265274-21kworker/u8:2+flush-179:011:40:210
4577091490,13ptp4l441ktimers/307:10:003
178057994942,5cyclictest187594-21kworker/u8:0+flush-179:008:00:000
178061994840,6cyclictest1213033-21systemd-journal10:55:391
178057994843,4cyclictest226228-21kworker/u8:0+flush-179:009:50:150
178057994842,5cyclictest234785-21kworker/u8:3+events_unbound10:05:180
178057994743,3cyclictest177988-21kworker/u8:2+events_unbound07:25:210
178057994537,6cyclictest236373-21kworker/u8:1+events_unbound10:40:140
178057994337,5cyclictest222251-21kworker/u8:1+flush-179:009:30:200
178062994238,2cyclictest0-21swapper/208:35:592
178057994237,4cyclictest249414-21kworker/u8:0+events_unbound10:50:230
178057994236,5cyclictest200588-21kworker/u8:1+flush-179:008:30:230
4578291410,39phc2sys0-21swapper/311:18:003
178057994136,4cyclictest185916-21kworker/u8:3+events_unbound07:40:240
178066994036,3cyclictest202149-21turbostat08:25:013
17806699400,38cyclictest270067-21turbostat11:54:593
17806699400,1cyclictest0-21swapper/312:14:583
17806299400,1cyclictest0-21swapper/207:36:002
17806299400,1cyclictest0-21swapper/207:35:592
178066993933,5cyclictest239591-21turbostat10:20:003
17806699390,1cyclictest0-21swapper/309:28:593
17806299390,36cyclictest0-21swapper/208:08:592
178057993933,5cyclictest257318-21kworker/u8:1+events_unbound11:45:200
17806699380,3cyclictest216984-21turbostat09:10:003
17806699380,35cyclictest0-21swapper/308:00:583
17806299380,36cyclictest0-21swapper/210:44:592
178061993835,2cyclictest0-21swapper/110:00:591
178057993832,5cyclictest257318-21kworker/u8:1+events_unbound11:20:230
178066993732,4cyclictest231619-21turbostat09:55:003
178062993734,2cyclictest0-21swapper/211:23:592
178062993733,2cyclictest0-21swapper/207:56:592
17806299370,35cyclictest0-21swapper/207:52:002
17806299370,2cyclictest0-21swapper/210:28:592
17806299370,2cyclictest0-21swapper/210:28:582
178066993633,2cyclictest0-21swapper/307:58:593
17806699360,35cyclictest0-21swapper/312:04:003
17806699360,35cyclictest0-21swapper/311:14:563
17806699360,1cyclictest0-21swapper/310:25:593
17806699360,1cyclictest0-21swapper/310:25:593
178062993633,2cyclictest0-21swapper/209:09:552
178062993633,2cyclictest0-21swapper/208:10:592
178062993633,2cyclictest0-21swapper/207:40:592
17806299360,1cyclictest0-21swapper/211:39:562
17806299360,1cyclictest0-21swapper/210:34:002
178066993533,1cyclictest0-21swapper/307:45:593
17806699350,1cyclictest0-21swapper/311:57:583
178062993532,2cyclictest0-21swapper/209:54:552
178062993532,2cyclictest0-21swapper/208:42:002
17806299350,1cyclictest0-21swapper/211:30:592
178062993431,2cyclictest0-21swapper/210:19:002
17806299340,1cyclictest0-21swapper/212:29:562
178066993331,1cyclictest0-21swapper/311:20:593
178066993331,1cyclictest0-21swapper/309:46:593
178066993331,1cyclictest0-21swapper/309:38:593
178066993331,1cyclictest0-21swapper/309:38:593
178066993330,2cyclictest0-21swapper/308:53:593
178066993327,5cyclictest246212-21turbostat10:40:003
178062993330,2cyclictest0-21swapper/210:49:552
178062993330,2cyclictest0-21swapper/210:00:592
178062993330,2cyclictest0-21swapper/209:31:592
178066993230,1cyclictest0-21swapper/311:05:593
178066993230,1cyclictest0-21swapper/310:13:593
178066993230,1cyclictest0-21swapper/308:15:583
178066993229,2cyclictest0-21swapper/307:29:583
178062993229,2cyclictest0-21swapper/212:04:552
17806299320,30cyclictest0-21swapper/207:30:012
178066993129,1cyclictest0-21swapper/311:34:553
178066993129,1cyclictest0-21swapper/310:43:593
178062993128,2cyclictest0-21swapper/207:47:582
17806299310,29cyclictest0-21swapper/209:40:122
17806299310,29cyclictest0-21swapper/209:10:132
178057993126,4cyclictest216954-21kworker/u8:2+events_unbound09:25:190
178066993028,1cyclictest0-21swapper/308:56:593
178066993028,1cyclictest0-21swapper/308:49:593
178066993027,2cyclictest0-21swapper/307:45:003
178066993026,2cyclictest0-21swapper/312:05:143
178062993027,2cyclictest0-21swapper/212:35:592
178062993027,2cyclictest0-21swapper/212:06:022
178062993027,2cyclictest0-21swapper/208:25:142
17806299300,28cyclictest0-21swapper/208:20:122
17806299300,23cyclictest0-21swapper/211:00:132
178066992926,2cyclictest0-21swapper/311:00:133
178066992926,2cyclictest0-21swapper/308:35:013
17806699290,2cyclictest0-21swapper/311:25:133
178062992927,1cyclictest0-21swapper/210:15:002
178062992926,2cyclictest0-21swapper/211:45:142
17806299290,28cyclictest0-21swapper/208:15:122
17806299290,27cyclictest0-21swapper/212:30:102
17806299290,27cyclictest0-21swapper/212:15:122
17806299290,27cyclictest0-21swapper/210:06:592
17806299290,27cyclictest0-21swapper/209:45:132
17806299290,27cyclictest0-21swapper/209:21:592
17806299290,27cyclictest0-21swapper/208:45:142
17806299290,1cyclictest0-21swapper/208:00:122
4577091280,6ptp4l441ktimers/309:45:003
178066992826,1cyclictest0-21swapper/312:40:003
178066992826,1cyclictest0-21swapper/308:05:123
178066992826,1cyclictest0-21swapper/307:52:593
178066992825,2cyclictest0-21swapper/310:07:593
178066992825,2cyclictest0-21swapper/307:35:133
178066992825,2cyclictest0-21swapper/307:35:123
17806699280,2cyclictest0-21swapper/307:30:133
17806699280,27cyclictest0-21swapper/308:25:133
17806699280,26cyclictest0-21swapper/312:30:123
17806699280,26cyclictest0-21swapper/309:20:113
17806699280,26cyclictest0-21swapper/309:15:123
178062992825,2cyclictest0-21swapper/212:24:562
178062992825,2cyclictest0-21swapper/211:55:112
178062992825,2cyclictest0-21swapper/211:29:542
178062992825,2cyclictest0-21swapper/211:15:122
17806299280,2cyclictest0-21swapper/211:05:132
17806299280,26cyclictest0-21swapper/212:10:132
17806299280,26cyclictest0-21swapper/210:52:592
17806299280,26cyclictest0-21swapper/209:25:592
17806299280,26cyclictest0-21swapper/207:10:152
178057992823,4cyclictest178179-21latency_hist07:10:010
4577091270,6ptp4l441ktimers/311:40:003
178066992725,1cyclictest0-21swapper/312:23:003
178066992725,1cyclictest0-21swapper/312:16:003
178066992725,1cyclictest0-21swapper/311:41:593
17806699270,26cyclictest0-21swapper/310:22:593
17806699270,26cyclictest0-21swapper/310:22:583
17806699270,26cyclictest0-21swapper/309:10:013
178062992724,2cyclictest0-21swapper/209:19:552
178062992724,2cyclictest0-21swapper/208:59:552
17806299270,25cyclictest0-21swapper/211:42:582
17806299270,25cyclictest0-21swapper/210:35:582
4577091260,6ptp4l61490irq/134-eno1-TxRx-010:05:003
4577091260,6ptp4l441ktimers/312:30:003
4577091260,6ptp4l441ktimers/307:20:013
4577091260,5ptp4l441ktimers/311:50:013
4577091260,4ptp4l441ktimers/310:50:023
178066992624,1cyclictest0-21swapper/309:00:593
178066992623,2cyclictest0-21swapper/309:55:153
17806699260,2cyclictest0-21swapper/310:58:593
178062992623,2cyclictest0-21swapper/209:37:592
178062992623,2cyclictest0-21swapper/209:37:592
178062992623,2cyclictest0-21swapper/207:31:582
178062992623,2cyclictest0-21swapper/207:24:592
17806299260,1cyclictest0-21swapper/207:19:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-007:25:003
178066992523,1cyclictest0-21swapper/308:44:593
4577091240,5ptp4l61490irq/134-eno1-TxRx-010:55:013
4577091240,4ptp4l61490irq/134-eno1-TxRx-009:34:553
178066992422,1cyclictest0-21swapper/308:35:033
4577091230,3ptp4l61490irq/134-eno1-TxRx-007:14:553
178062992321,1cyclictest0-21swapper/211:54:592
231999220,13rtkit-daemon659750-21ntpd07:07:121
178062992220,1cyclictest0-21swapper/208:54:592
178062992118,2cyclictest0-21swapper/209:55:592
178062992118,2cyclictest0-21swapper/208:32:582
178062991816,1cyclictest0-21swapper/209:03:592
178062991310,2cyclictest0-21swapper/211:14:552
17806299129,2cyclictest0-21swapper/210:58:582
1780629996,2cyclictest0-21swapper/210:23:592
1780629996,2cyclictest0-21swapper/210:23:592
1780629940,4cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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