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2026-09-01 - 19:39
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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 Tue Sep 01, 2026 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25763499129119,7cyclictest267627-21latency_hist07:40:011
25763499125115,7cyclictest259118-21apt-get07:15:001
25763499125103,19cyclictest340870-21kworker/u8:2+events_unbound11:50:011
25763099125114,8cyclictest337920-21kworker/u8:1+events_unbound11:20:020
25763499124111,10cyclictest287511-21apt-get08:40:121
25763099124114,6cyclictest320429-21kworker/u8:1+events_unbound10:25:010
25763099120113,4cyclictest309568-21kworker/u8:3+events_unbound10:00:000
25763099120111,7cyclictest350375-21latency_hist11:55:010
25763499119110,6cyclictest337379-21latency_hist11:15:011
25763099117107,6cyclictest327815-21kworker/u8:0+flush-179:011:20:000
25763099117106,9cyclictest1213033-21systemd-journal07:15:010
2576349911693,20cyclictest309533-21latency_hist09:50:011
25763099116108,5cyclictest264645-21kworker/u8:0+flush-179:007:35:170
25763099114104,7cyclictest332048-21kworker/u8:3+flush-179:011:00:220
25763099114101,10cyclictest59-21kcompactd008:15:260
25763099114101,10cyclictest59-21kcompactd008:15:260
25763099113106,4cyclictest285648-21latency_hist08:35:010
25763099113106,4cyclictest191rcuc/007:25:000
25763099113105,5cyclictest314577-21latency_hist10:05:010
2576349911299,10cyclictest353587-21apt-get12:05:001
2576349910794,9cyclictest1213033-21systemd-journal12:10:001
2576349910793,11cyclictest1213033-21systemd-journal10:49:591
2576309910798,6cyclictest272643-21kworker/u8:0+flush-179:008:00:220
2576349910696,6cyclictest323029-21kworker/u8:0+flush-179:010:35:191
2576309910595,7cyclictest327815-21kworker/u8:0+flush-179:010:45:150
2576309910499,3cyclictest340870-21kworker/u8:2+events_unbound12:25:130
2576309910497,5cyclictest340870-21kworker/u8:2+events_unbound12:20:010
2576309910487,14cyclictest279017-21latency_hist08:15:010
2576349910390,8cyclictest278999-21kworker/u8:1+flush-179:008:15:261
2576349910390,8cyclictest278999-21kworker/u8:1+flush-179:008:15:261
2576349910294,6cyclictest1213033-21systemd-journal12:25:001
2576309910296,4cyclictest337920-21kworker/u8:1+flush-179:011:25:230
2576309910294,5cyclictest302544-21kworker/u8:1+flush-179:009:25:260
2576309910293,5cyclictest357711-21kworker/u8:0+flush-179:012:20:140
2576309910292,7cyclictest306346-21latency_hist09:40:010
2576349910195,4cyclictest254458-21kworker/u8:0+flush-179:007:25:001
2576309910193,5cyclictest340870-21kworker/u8:2+flush-179:012:10:170
2576349910092,6cyclictest317991-21kworker/u8:2+flush-179:010:20:201
257630999892,4cyclictest314553-21kworker/u8:0+flush-179:010:10:230
257630999789,6cyclictest317991-21kworker/u8:2+events_unbound10:15:190
257630999788,7cyclictest345875-21apt-get11:40:120
257634999690,4cyclictest264162-21apt-get07:30:031
257634999690,4cyclictest264162-21apt-get07:30:031
257634999687,6cyclictest325419-21kworker/u8:2+flush-179:010:40:141
257630999385,6cyclictest311130-21apt-get09:55:010
257630999385,6cyclictest311130-21apt-get09:55:010
257630999383,8cyclictest278999-21kworker/u8:1+flush-179:008:50:170
257630999285,5cyclictest272643-21kworker/u8:0+flush-179:008:55:230
257634999183,5cyclictest328892-21kworker/u8:1+events_unbound10:55:201
257634999180,9cyclictest363890-21apt-get12:35:121
257630999083,5cyclictest307928-21kworker/u8:1+flush-179:009:45:000
257634998980,6cyclictest327815-21kworker/u8:0+flush-179:010:50:231
257630998983,5cyclictest314553-21kworker/u8:0+flush-179:010:10:010
257634998880,5cyclictest274251-21apt-get08:00:121
257634998862,23cyclictest510-21rs:main1
257634998781,4cyclictest261021-21kworker/u8:2+events_unbound07:50:251
257634998780,4cyclictest314553-21kworker/u8:0+flush-179:010:10:161
257630998781,4cyclictest254458-21kworker/u8:0+flush-179:007:10:160
257634998680,4cyclictest302544-21kworker/u8:1+flush-179:009:35:221
257634998678,5cyclictest272643-21kworker/u8:0+flush-179:008:30:171
257630998679,5cyclictest306319-21kworker/u8:2+flush-179:009:45:160
257634998577,4cyclictest317991-21kworker/u8:2+events_unbound10:15:141
257634998474,7cyclictest254458-21kworker/u8:0+flush-179:007:15:011
257630998375,5cyclictest267665-21kworker/u8:3+events_unbound07:45:140
257634998276,4cyclictest314553-21kworker/u8:0+flush-179:010:05:011
257634998175,4cyclictest357711-21kworker/u8:0+events_unbound12:15:231
257634998174,5cyclictest320429-21kworker/u8:1+flush-179:010:29:591
257630998174,5cyclictest325419-21kworker/u8:2+flush-179:010:35:250
257634998073,5cyclictest267665-21kworker/u8:3+flush-179:007:40:211
257630998074,4cyclictest261021-21kworker/u8:2+flush-179:007:45:000
257630998071,7cyclictest320429-21kworker/u8:1+flush-179:010:25:210
257630998071,6cyclictest278999-21kworker/u8:1+flush-179:008:20:210
257630998071,5cyclictest261021-21kworker/u8:2+flush-179:007:30:210
257630998071,5cyclictest261021-21kworker/u8:2+flush-179:007:30:210
257630998070,8cyclictest345580-21kworker/u8:0+events_unbound11:40:000
257634997971,7cyclictest272643-21kworker/u8:0+events_unbound08:40:001
257630997973,4cyclictest290664-21kworker/u8:2+flush-179:009:05:230
257634997771,4cyclictest340870-21kworker/u8:2+events_unbound12:15:011
257634997770,5cyclictest272643-21kworker/u8:0+events_unbound08:00:011
257630997768,7cyclictest363869-21kworker/u8:1+events_unbound12:40:010
257634997665,8cyclictest510-21rs:main1
257630997672,3cyclictest348777-21kworker/u8:1+flush-179:011:49:570
257634997570,3cyclictest278999-21kworker/u8:1+flush-179:008:20:221
257634997468,4cyclictest274040-21kworker/u8:3+events_unbound08:10:201
257630997468,4cyclictest323029-21kworker/u8:0+flush-179:010:30:210
257634997366,5cyclictest306319-21kworker/u8:2+flush-179:009:50:171
257634997366,5cyclictest306319-21kworker/u8:2+flush-179:009:50:161
257634997363,8cyclictest290427-21latency_hist08:50:011
257630997265,5cyclictest271056-21apt-get07:50:120
257634997164,5cyclictest302544-21kworker/u8:1+flush-179:009:25:231
257634997159,10cyclictest276098-21apt-get08:05:111
257630997164,5cyclictest290664-21kworker/u8:2+flush-179:009:10:220
257634997063,4cyclictest299289-21kworker/u8:0+flush-179:009:20:151
257630997065,4cyclictest257575-21kworker/u8:3+flush-179:007:25:210
257630997063,5cyclictest340870-21kworker/u8:2+flush-179:012:05:170
257634996963,4cyclictest272643-21kworker/u8:0+flush-179:008:55:251
257634996960,6cyclictest298383-21latency_hist09:15:011
257630996962,4cyclictest340870-21kworker/u8:2+flush-179:011:30:260
257630996860,6cyclictest293658-21kworker/u8:3+flush-179:009:15:170
257634996761,4cyclictest293658-21kworker/u8:3+flush-179:009:30:161
257634996761,4cyclictest290664-21kworker/u8:2+flush-179:009:05:231
257634996755,10cyclictest327815-21kworker/u8:0+events_unbound11:20:251
257630996759,6cyclictest282727-21apt-get08:25:120
257630996758,6cyclictest336047-21apt-get11:10:130
257634996659,5cyclictest272643-21kworker/u8:0+events_unbound09:00:181
257634996655,9cyclictest337633-21apt-get11:15:121
257630996659,5cyclictest264945-21kworker/u8:1+events_unbound08:05:240
25763799650,62cyclictest0-21swapper/311:40:593
257634996560,4cyclictest314553-21kworker/u8:0+flush-179:010:05:181
257634996557,6cyclictest264162-21apt-get07:30:001
25763599630,2cyclictest0-21swapper/211:40:592
257634996356,5cyclictest340870-21kworker/u8:2+flush-179:011:35:171
257634996356,5cyclictest261021-21kworker/u8:2+events_unbound07:45:261
257630996356,4cyclictest327815-21kworker/u8:0+flush-179:011:05:150
257630996257,4cyclictest272643-21kworker/u8:0+flush-179:009:00:190
257630996256,5cyclictest272643-21kworker/u8:0+flush-179:008:35:240
257630996253,7cyclictest510-21rs:main0
257630996251,9cyclictest1213033-21systemd-journal12:35:010
257630996249,11cyclictest1213033-21systemd-journal09:25:010
257634996155,4cyclictest363632-21latency_hist12:35:011
257630996154,5cyclictest293658-21kworker/u8:3+flush-179:009:30:160
257634996054,5cyclictest345580-21kworker/u8:0+flush-179:011:40:281
257634996049,8cyclictest344011-21latency_hist11:35:011
257634995949,7cyclictest340870-21kworker/u8:2+flush-179:012:25:231
257634995750,5cyclictest323029-21kworker/u8:0+flush-179:010:30:211
257634995749,6cyclictest351975-21latency_hist12:00:021
257634995749,6cyclictest351975-21latency_hist12:00:011
257634995742,4cyclictest272643-21kworker/u8:0+flush-179:008:25:151
257634995651,4cyclictest348777-21kworker/u8:1+flush-179:011:50:161
257630995653,2cyclictest0-21swapper/010:43:000
257630995650,4cyclictest332048-21kworker/u8:3+events_unbound10:55:250
257634995348,4cyclictest337920-21kworker/u8:1+events_unbound11:25:141
257634995147,3cyclictest327815-21kworker/u8:0+flush-179:011:05:231
257634995146,4cyclictest306319-21kworker/u8:2+events_unbound09:55:211
257630995147,3cyclictest264945-21kworker/u8:1+flush-179:007:55:240
257630995145,5cyclictest340870-21kworker/u8:2+flush-179:011:55:280
257630995145,5cyclictest340870-21kworker/u8:2+flush-179:011:55:270
257635995046,2cyclictest0-21swapper/207:40:592
4577091490,13ptp4l61490irq/134-eno1-TxRx-007:10:003
257630994944,3cyclictest714-21Xorg08:42:580
257630994842,4cyclictest352538-21kworker/u8:0+events_unbound12:00:180
257634994641,4cyclictest278999-21kworker/u8:1+events_unbound08:50:191
257637994543,1cyclictest0-21swapper/307:40:593
257637994240,1cyclictest0-21swapper/309:45:583
25763799420,40cyclictest0-21swapper/309:23:593
257635994238,2cyclictest0-21swapper/207:49:552
25763599420,2cyclictest0-21swapper/209:23:592
257635994137,2cyclictest0-21swapper/210:27:002
257634994136,3cyclictest714-21Xorg11:02:581
257630994135,5cyclictest278999-21kworker/u8:1+flush-179:008:45:180
25763799400,1cyclictest0-21swapper/308:41:593
257637993836,1cyclictest0-21swapper/307:49:553
25763799380,36cyclictest0-21swapper/312:16:003
25763799380,36cyclictest0-21swapper/308:56:003
257635993836,1cyclictest0-21swapper/212:01:002
257635993834,2cyclictest0-21swapper/211:24:002
257635993834,2cyclictest0-21swapper/211:10:592
257635993834,2cyclictest0-21swapper/208:59:552
25763599380,2cyclictest0-21swapper/212:15:592
257637993735,1cyclictest0-21swapper/310:27:003
257635993734,2cyclictest0-21swapper/207:36:592
25763599370,35cyclictest0-21swapper/211:57:592
25763599370,35cyclictest0-21swapper/211:57:592
25763599370,35cyclictest0-21swapper/208:09:592
257637993634,1cyclictest431rcuc/311:31:003
257637993634,1cyclictest0-21swapper/308:09:593
25763799360,1cyclictest0-21swapper/308:17:593
25763799360,1cyclictest0-21swapper/308:17:593
257635993633,2cyclictest0-21swapper/212:12:592
257635993632,2cyclictest0-21swapper/209:33:592
257637993533,1cyclictest0-21swapper/311:11:003
257637993533,1cyclictest0-21swapper/308:01:593
257637993533,1cyclictest0-21swapper/307:27:593
25763799350,1cyclictest0-21swapper/309:04:593
257635993532,2cyclictest0-21swapper/207:18:592
4577091340,2ptp4l441ktimers/307:15:023
257637993432,1cyclictest0-21swapper/311:23:593
257637993432,1cyclictest0-21swapper/309:16:593
257637993432,1cyclictest0-21swapper/307:36:593
257635993430,2cyclictest0-21swapper/209:05:592
257635993329,2cyclictest0-21swapper/210:12:002
257637993230,1cyclictest0-21swapper/309:33:583
257635993229,2cyclictest0-21swapper/208:49:552
257635993229,2cyclictest0-21swapper/207:14:592
257635993228,2cyclictest0-21swapper/210:54:592
257635993228,2cyclictest0-21swapper/210:34:552
257635993214,17cyclictest0-21swapper/212:35:142
25763599320,30cyclictest0-21swapper/208:00:592
257637993128,2cyclictest0-21swapper/312:12:593
257635993129,1cyclictest0-21swapper/210:35:582
25763599310,29cyclictest0-21swapper/211:50:142
25763599310,29cyclictest0-21swapper/209:10:132
257637993028,1cyclictest0-21swapper/307:54:593
257637993027,2cyclictest0-21swapper/310:35:593
257637993027,2cyclictest0-21swapper/309:05:593
25763799302,27cyclictest441ktimers/308:25:133
25763799300,2cyclictest0-21swapper/308:45:123
257635993027,2cyclictest0-21swapper/211:35:152
257635993027,2cyclictest0-21swapper/211:30:142
257635993027,2cyclictest0-21swapper/211:27:592
257635993027,2cyclictest0-21swapper/209:55:022
25763599300,2cyclictest0-21swapper/210:15:032
25763599300,28cyclictest0-21swapper/212:30:132
25763599300,28cyclictest0-21swapper/209:45:142
25763599300,27cyclictest0-21swapper/210:00:132
231999300,17rtkit-daemon256924-21ntp_192.168.11407:05:261
257637992927,1cyclictest0-21swapper/312:38:593
257637992927,1cyclictest0-21swapper/311:50:133
257637992927,1cyclictest0-21swapper/311:45:143
257637992927,1cyclictest0-21swapper/310:12:003
257637992927,1cyclictest0-21swapper/309:10:133
257637992927,1cyclictest0-21swapper/307:15:003
25763799290,27cyclictest0-21swapper/310:15:023
25763799290,27cyclictest0-21swapper/309:50:143
25763799290,27cyclictest0-21swapper/309:50:143
25763799290,27cyclictest0-21swapper/308:35:153
25763799290,27cyclictest0-21swapper/308:30:143
25763799290,27cyclictest0-21swapper/307:20:143
257635992926,2cyclictest0-21swapper/212:20:122
25763599291,26cyclictest351rcuc/207:54:592
25763599290,2cyclictest0-21swapper/210:20:112
25763599290,2cyclictest0-21swapper/209:35:132
25763599290,2cyclictest0-21swapper/208:35:152
25763599290,2cyclictest0-21swapper/207:20:142
25763599290,27cyclictest0-21swapper/211:45:132
25763599290,27cyclictest0-21swapper/210:05:012
25763599290,27cyclictest0-21swapper/209:50:142
25763599290,27cyclictest0-21swapper/209:50:132
25763599290,27cyclictest0-21swapper/208:30:142
25763599290,27cyclictest0-21swapper/208:25:132
25763599290,27cyclictest0-21swapper/207:25:582
25763599290,21cyclictest0-21swapper/208:15:032
25763599290,21cyclictest0-21swapper/208:15:032
257637992826,1cyclictest0-21swapper/310:34:543
257637992825,2cyclictest0-21swapper/312:30:143
257637992825,2cyclictest0-21swapper/311:16:593
257637992825,2cyclictest0-21swapper/310:54:593
257637992825,2cyclictest0-21swapper/309:55:013
25763799280,27cyclictest0-21swapper/311:35:143
25763799280,27cyclictest0-21swapper/310:05:033
25763799280,26cyclictest0-21swapper/311:55:133
25763799280,26cyclictest0-21swapper/311:55:123
25763799280,26cyclictest0-21swapper/309:35:143
25763799280,25cyclictest0-21swapper/310:48:583
25763799280,21cyclictest0-21swapper/310:20:113
257635992825,2cyclictest0-21swapper/209:29:002
257637992725,1cyclictest0-21swapper/307:30:593
257637992725,1cyclictest0-21swapper/307:30:593
257637992720,5cyclictest279034-21turbostat08:15:003
25763799270,26cyclictest0-21swapper/311:25:593
25763799270,26cyclictest0-21swapper/310:00:133
257635992723,2cyclictest0-21swapper/209:03:592
257635992723,2cyclictest0-21swapper/208:50:592
25763599270,2cyclictest0-21swapper/210:48:592
25763599270,25cyclictest0-21swapper/207:55:112
25763599270,24cyclictest0-21swapper/212:28:592
25763599270,24cyclictest0-21swapper/210:59:542
25763799260,25cyclictest0-21swapper/310:59:553
257635992624,1cyclictest0-21swapper/208:44:592
257635992623,2cyclictest0-21swapper/211:01:002
257635992623,2cyclictest0-21swapper/209:19:552
257635992623,2cyclictest0-21swapper/208:10:132
4577091250,5ptp4l441ktimers/312:09:543
4577091250,3ptp4l441ktimers/311:10:003
4577091250,3ptp4l441ktimers/310:45:023
4577091250,3ptp4l441ktimers/309:45:003
4577091250,3ptp4l441ktimers/308:25:003
257637992523,1cyclictest0-21swapper/312:20:113
257637992523,1cyclictest0-21swapper/311:00:133
257635992523,1cyclictest0-21swapper/209:44:592
257635992521,2cyclictest0-21swapper/211:08:592
4577091240,3ptp4l61490irq/134-eno1-TxRx-012:30:003
4577091240,3ptp4l441ktimers/312:04:553
4577091240,3ptp4l441ktimers/308:54:553
4577091240,3ptp4l441ktimers/308:00:013
257637992422,1cyclictest0-21swapper/309:29:003
257635992421,2cyclictest0-21swapper/212:08:592
257635992018,1cyclictest0-21swapper/211:19:592
257635991815,2cyclictest0-21swapper/208:22:592
25763099183,10cyclictest257493-21latency_hist07:10:020
257635991613,2cyclictest0-21swapper/210:44:002
25763599129,2cyclictest351rcuc/207:30:472
25763599129,2cyclictest351rcuc/207:30:472
2576359952,2cyclictest361ktimers/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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