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2026-06-02 - 17:01
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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 792 highest latencies:
System rackeslot6.osadl.org (updated Tue Jun 02, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
92714299119109,7cyclictest975297-21latency_hist09:40:010
9271429910899,6cyclictest993053-21kworker/u8:0+events_unbound10:55:010
9271439910696,8cyclictest980070-21latency_hist09:55:011
9271439910495,7cyclictest935267-21kworker/u8:1+flush-179:007:40:011
9271439910396,5cyclictest926969-21kworker/u8:2+events_unbound07:10:231
9271439910095,4cyclictest935267-21kworker/u8:1+flush-179:007:55:001
927143999888,7cyclictest978484-21latency_hist09:50:011
927143999690,4cyclictest918758-21kworker/u8:0+flush-179:007:45:011
927143999677,6cyclictest978463-21kworker/u8:0+events_unbound09:55:241
927143999590,4cyclictest949628-21kworker/u8:3+flush-179:008:30:001
927143999587,5cyclictest955949-21latency_hist08:40:011
927143999489,4cyclictest940578-21kworker/u8:2+flush-179:008:10:221
927143999489,3cyclictest993053-21kworker/u8:0+flush-179:010:35:001
927143999379,9cyclictest1213033-21systemd-journal12:24:591
927142999082,6cyclictest1012405-21kworker/u8:3+events_unbound12:15:000
927143998980,7cyclictest973425-21kworker/u8:1+flush-179:009:35:011
927142998881,5cyclictest994641-21kworker/u8:2+events_unbound11:20:140
927143998679,5cyclictest946432-21kworker/u8:1+flush-179:008:55:231
927143998578,4cyclictest946432-21kworker/u8:1+events_unbound08:30:141
927143998577,6cyclictest946432-21kworker/u8:1+flush-179:008:15:161
927142998578,5cyclictest954387-21kworker/u8:2+flush-179:009:20:150
927142998475,6cyclictest946398-21latency_hist08:10:010
927143998374,7cyclictest1004721-21apt-get11:10:111
927142998377,4cyclictest978463-21kworker/u8:0+flush-179:010:00:160
927142998376,4cyclictest1018244-21kworker/u8:2+flush-179:012:25:220
927143998277,4cyclictest994641-21kworker/u8:2+flush-179:011:40:001
927143998276,4cyclictest971308-21kworker/u8:0+flush-179:009:30:211
927142998274,5cyclictest928604-21latency_hist07:15:010
927142998273,6cyclictest988055-21latency_hist10:20:010
927143998175,4cyclictest1013996-21kworker/u8:1+flush-179:011:45:251
927143998174,5cyclictest1002636-21apt-get11:05:031
927143998174,4cyclictest993053-21kworker/u8:0+events_unbound10:55:151
927143998171,7cyclictest971858-21latency_hist09:30:011
927142998174,5cyclictest981638-21kworker/u8:1+flush-179:010:35:250
927143998073,6cyclictest918758-21kworker/u8:0+flush-179:007:50:001
927143998071,7cyclictest1012405-21kworker/u8:3+flush-179:011:50:201
927143998071,6cyclictest1018244-21kworker/u8:2+flush-179:012:15:191
927143998070,7cyclictest959130-21latency_hist08:50:011
927142998074,4cyclictest971308-21kworker/u8:0+flush-179:009:30:160
927142998071,6cyclictest1012420-21latency_hist11:35:010
927142998071,6cyclictest1012420-21latency_hist11:35:010
927143997973,4cyclictest981638-21kworker/u8:1+flush-179:010:35:231
927143997972,5cyclictest994641-21kworker/u8:2+flush-179:011:20:211
927143997972,5cyclictest946432-21kworker/u8:1+flush-179:008:40:261
927143997972,5cyclictest946432-21kworker/u8:1+flush-179:008:40:261
927142997974,4cyclictest940578-21kworker/u8:2+flush-179:008:04:560
927142997972,5cyclictest1018244-21kworker/u8:2+events_unbound11:55:020
927142997968,8cyclictest933387-21latency_hist07:30:020
927142997867,8cyclictest926990-21latency_hist07:10:030
927143997770,5cyclictest918758-21kworker/u8:0+flush-179:007:25:241
927143997671,4cyclictest994641-21kworker/u8:2+flush-179:011:25:241
927142997672,2cyclictest1-21systemd08:30:000
927143997568,5cyclictest1012405-21kworker/u8:3+flush-179:012:40:011
927142997566,7cyclictest981638-21kworker/u8:1+flush-179:010:15:000
927142997467,5cyclictest960749-21kworker/u8:3+flush-179:009:15:220
927142997467,4cyclictest994641-21kworker/u8:2+flush-179:011:40:260
927142997361,10cyclictest510-21rs:main0
927143997259,11cyclictest960749-21kworker/u8:3+events_unbound09:00:251
927142997266,4cyclictest1004445-21kworker/u8:0+events_unbound11:15:000
927142997265,4cyclictest1013996-21kworker/u8:1+flush-179:011:45:160
927143997166,4cyclictest994641-21kworker/u8:2+events_unbound11:00:221
927143997166,4cyclictest1018244-21kworker/u8:2+flush-179:012:09:551
927143997165,4cyclictest981638-21kworker/u8:1+flush-179:010:15:261
927143997064,4cyclictest949628-21kworker/u8:3+events_unbound08:20:231
927142997064,4cyclictest927036-21kworker/u8:3+events_unbound07:25:000
927142997062,5cyclictest960715-21latency_hist08:55:020
927143996964,4cyclictest954387-21kworker/u8:2+flush-179:008:54:551
927142996959,7cyclictest1031518-21latency_hist12:35:010
927143996862,5cyclictest940578-21kworker/u8:2+flush-179:008:09:551
927142996862,4cyclictest935267-21kworker/u8:1+flush-179:007:40:230
927143996762,4cyclictest927036-21kworker/u8:3+flush-179:007:20:251
927143996756,9cyclictest1213033-21systemd-journal10:42:281
927143996756,9cyclictest1213033-21systemd-journal10:42:281
927142996762,4cyclictest981638-21kworker/u8:1+flush-179:010:49:550
927143996661,4cyclictest954387-21kworker/u8:2+flush-179:009:14:561
92714399660,1cyclictest0-21swapper/110:48:591
927143996558,5cyclictest993053-21kworker/u8:0+flush-179:010:50:221
927143996555,7cyclictest976899-21latency_hist09:45:011
927142996558,5cyclictest1011877-21kworker/u8:0+flush-179:011:35:160
927142996558,4cyclictest1026745-21latency_hist12:20:000
927143996458,4cyclictest1012405-21kworker/u8:3+flush-179:011:55:181
927142996359,3cyclictest991459-21kworker/u8:3+flush-179:010:30:100
927142996357,4cyclictest918758-21kworker/u8:0+flush-179:007:35:220
927142996356,5cyclictest935267-21kworker/u8:1+flush-179:007:45:160
927142996354,6cyclictest951178-21latency_hist08:25:010
927142996351,9cyclictest948238-21apt-get08:15:110
927142996256,4cyclictest975281-21kworker/u8:3+flush-179:009:45:160
927142996253,6cyclictest965494-21latency_hist09:10:010
927147996158,2cyclictest0-21swapper/208:10:592
927143996156,4cyclictest967113-21kworker/u8:1+flush-179:009:20:201
927143996155,5cyclictest988089-21kworker/u8:0+events_unbound10:25:251
927143996152,6cyclictest1018244-21kworker/u8:2+events_unbound12:25:171
927142996154,5cyclictest946432-21kworker/u8:1+flush-179:008:35:000
927149996057,2cyclictest0-21swapper/308:10:583
927142996055,4cyclictest971308-21kworker/u8:0+flush-179:009:29:550
927142996055,4cyclictest1012405-21kworker/u8:3+flush-179:011:56:270
927142996053,5cyclictest1018244-21kworker/u8:2+flush-179:012:00:210
927143995952,5cyclictest918758-21kworker/u8:0+events_unbound07:30:031
927143995950,6cyclictest1012405-21kworker/u8:3+flush-179:012:30:191
927142995956,2cyclictest954387-21kworker/u8:2+events_unbound09:10:150
927142995953,4cyclictest994641-21kworker/u8:2+events_unbound11:00:130
927142995951,4cyclictest918758-21kworker/u8:0+flush-179:007:30:220
927142995950,7cyclictest927036-21kworker/u8:3+flush-179:007:15:180
927142995949,7cyclictest1010832-21latency_hist11:30:020
927143995851,5cyclictest940578-21kworker/u8:2+events_unbound08:00:131
927142995848,7cyclictest962305-21latency_hist09:00:010
927143995751,5cyclictest1011877-21kworker/u8:0+events_unbound11:30:261
927143995751,5cyclictest1011877-21kworker/u8:0+events_unbound11:30:251
927142995753,3cyclictest978463-21kworker/u8:0+flush-179:010:05:210
927143995649,5cyclictest943211-21latency_hist08:00:011
927142995650,4cyclictest1029964-21kworker/u8:1+flush-179:012:35:140
927143995545,8cyclictest985393-21diskstats10:10:141
927142995545,8cyclictest1022233-21apt-get12:05:120
927142995449,3cyclictest940578-21kworker/u8:2+events_unbound07:50:160
927142995448,5cyclictest960749-21kworker/u8:3+flush-179:009:00:220
927142995447,5cyclictest981638-21kworker/u8:1+events_unbound10:40:200
927142995447,5cyclictest981638-21kworker/u8:1+events_unbound10:40:200
927142995445,7cyclictest946432-21kworker/u8:1+events_unbound08:35:210
927143995348,4cyclictest978463-21kworker/u8:0+flush-179:010:05:201
927143995244,6cyclictest964973-21kworker/u8:0+flush-179:009:05:231
927142995247,4cyclictest994641-21kworker/u8:2+flush-179:010:55:250
927149995147,3cyclictest0-21swapper/308:53:003
927147995148,2cyclictest0-21swapper/208:52:592
927143995146,4cyclictest1012405-21kworker/u8:3+flush-179:011:44:551
927142995147,3cyclictest940578-21kworker/u8:2+flush-179:008:10:130
927142995145,5cyclictest975271-21kworker/u8:2+flush-179:009:50:190
927142995143,6cyclictest954387-21kworker/u8:2+flush-179:008:45:260
927143995043,5cyclictest1012405-21kworker/u8:3+events_unbound12:10:151
927142995043,5cyclictest988089-21kworker/u8:0+flush-179:010:25:270
927142994943,4cyclictest940578-21kworker/u8:2+flush-179:007:55:240
4577091490,13ptp4l61490irq/134-eno1-TxRx-007:10:013
927147994844,2cyclictest0-21swapper/210:48:592
927149994644,1cyclictest0-21swapper/310:48:593
927142994640,4cyclictest1004445-21kworker/u8:0+events_unbound11:15:230
927142994632,4cyclictest981638-21kworker/u8:1+events_unbound10:20:240
927143994541,3cyclictest978463-21kworker/u8:0+flush-179:010:00:261
927143994438,5cyclictest983930-21kworker/u8:2+flush-179:010:25:001
927143994437,5cyclictest927036-21kworker/u8:3+flush-179:007:15:201
927147994340,2cyclictest0-21swapper/207:51:592
927142994338,3cyclictest1-21systemd08:45:010
927142994338,3cyclictest1-21systemd08:45:010
927149994139,1cyclictest0-21swapper/307:51:583
927142994133,6cyclictest1003420-21diskstats11:05:160
927142994132,7cyclictest975271-21kworker/u8:2+flush-179:009:40:200
92714999400,39cyclictest1017212-21turbostat11:50:013
927147994037,2cyclictest0-21swapper/212:00:592
927149993934,4cyclictest959138-21turbostat08:50:003
92714999390,37cyclictest0-21swapper/308:34:553
92714999390,30cyclictest0-21swapper/310:44:593
92714999390,30cyclictest0-21swapper/310:44:593
927143993927,9cyclictest1006591-21diskstats11:15:151
927149993836,1cyclictest0-21swapper/312:01:003
92714999380,3cyclictest978504-21turbostat09:54:553
92714999380,37cyclictest0-21swapper/308:38:583
927147993834,2cyclictest0-21swapper/208:50:002
927147993834,2cyclictest0-21swapper/207:41:582
92714799380,35cyclictest0-21swapper/210:58:002
92714799380,35cyclictest0-21swapper/208:34:552
92714799380,1cyclictest0-21swapper/210:13:002
927149993734,2cyclictest0-21swapper/312:15:593
927149993731,5cyclictest1015631-21turbostat11:45:003
92714999370,36cyclictest0-21swapper/311:01:593
92714999370,35cyclictest0-21swapper/309:31:593
92714999370,1cyclictest0-21swapper/309:06:593
927147993734,2cyclictest0-21swapper/211:35:592
927147993734,2cyclictest0-21swapper/211:14:592
927147993734,2cyclictest0-21swapper/210:17:592
927147993734,2cyclictest0-21swapper/209:48:592
927147993734,2cyclictest0-21swapper/209:23:592
92714799370,35cyclictest0-21swapper/208:38:582
92714799370,2cyclictest0-21swapper/209:32:002
92714799370,1cyclictest0-21swapper/212:13:002
927143993735,1cyclictest0-21swapper/112:04:551
927142993733,3cyclictest981668-21munin-plugin-st10:00:000
927149993634,1cyclictest0-21swapper/311:35:583
927149993634,1cyclictest0-21swapper/307:59:553
927149993633,2cyclictest0-21swapper/309:48:593
927149993633,2cyclictest0-21swapper/307:41:583
927149993630,5cyclictest991491-21turbostat10:30:003
92714799360,2cyclictest0-21swapper/209:16:592
92714799360,1cyclictest0-21swapper/211:50:012
92714799360,1cyclictest0-21swapper/210:44:592
92714799360,1cyclictest0-21swapper/210:44:582
92714799360,1cyclictest0-21swapper/209:06:592
927149993533,1cyclictest0-21swapper/309:23:593
927149993531,3cyclictest0-21swapper/311:14:553
927149993530,4cyclictest933398-21turbostat07:30:013
92714999350,1cyclictest0-21swapper/312:12:593
92714999350,1cyclictest0-21swapper/310:13:003
927147993532,2cyclictest0-21swapper/210:28:002
927147993531,2cyclictest0-21swapper/211:44:592
927143993531,3cyclictest954387-21kworker/u8:2+events_unbound09:19:271
927149993430,2cyclictest0-21swapper/310:24:593
927147993431,2cyclictest0-21swapper/211:31:592
927147993431,2cyclictest0-21swapper/211:31:582
927147993431,2cyclictest0-21swapper/210:33:592
927147993431,2cyclictest0-21swapper/210:24:592
927147993430,2cyclictest0-21swapper/211:23:592
927149993330,2cyclictest0-21swapper/311:31:593
927149993330,2cyclictest0-21swapper/311:31:593
927149993328,4cyclictest1029947-21turbostat12:30:013
92714999330,1cyclictest0-21swapper/309:16:593
927147993330,2cyclictest0-21swapper/209:50:592
927147993330,1cyclictest0-21swapper/207:30:002
927147993329,2cyclictest0-21swapper/207:46:592
927149993230,1cyclictest0-21swapper/310:33:593
927149993229,2cyclictest0-21swapper/311:23:583
927149993228,3cyclictest0-21swapper/308:43:593
927149993228,3cyclictest0-21swapper/308:43:593
927149993228,2cyclictest0-21swapper/307:47:003
927147993230,1cyclictest0-21swapper/209:44:592
927147993229,2cyclictest0-21swapper/212:30:012
927147993229,2cyclictest0-21swapper/211:06:592
927147993228,2cyclictest0-21swapper/212:39:582
927147993228,2cyclictest0-21swapper/208:44:002
927147993228,2cyclictest0-21swapper/208:43:592
927147993228,2cyclictest0-21swapper/208:04:542
927149993129,1cyclictest0-21swapper/311:06:583
927149993129,1cyclictest0-21swapper/309:44:593
927149993127,2cyclictest0-21swapper/312:39:593
92714999310,28cyclictest0-21swapper/307:15:123
92714799310,27cyclictest0-21swapper/207:15:132
92714999300,2cyclictest0-21swapper/309:25:133
92714999300,29cyclictest0-21swapper/311:15:143
92714999300,29cyclictest0-21swapper/307:20:123
92714999300,28cyclictest0-21swapper/310:00:143
92714999300,28cyclictest0-21swapper/309:55:133
92714999300,1cyclictest0-21swapper/310:17:593
927147993026,2cyclictest0-21swapper/208:07:582
927147993025,2cyclictest0-21swapper/208:25:152
92714799300,28cyclictest0-21swapper/211:55:142
92714799300,28cyclictest0-21swapper/211:15:142
92714799300,28cyclictest0-21swapper/209:35:122
927149992927,1cyclictest0-21swapper/308:04:553
927149992926,2cyclictest0-21swapper/308:07:593
92714999290,28cyclictest0-21swapper/310:55:143
92714999290,28cyclictest0-21swapper/308:20:113
92714999290,27cyclictest0-21swapper/307:30:043
927147992926,2cyclictest0-21swapper/209:01:592
92714799290,2cyclictest0-21swapper/209:55:132
92714799290,2cyclictest0-21swapper/209:25:122
92714799290,28cyclictest0-21swapper/207:20:122
92714799290,27cyclictest0-21swapper/212:32:002
92714799290,27cyclictest0-21swapper/211:00:132
92714799290,27cyclictest0-21swapper/207:35:142
92714799290,21cyclictest0-21swapper/210:00:132
92714799290,21cyclictest0-21swapper/208:20:102
92714799290,21cyclictest0-21swapper/207:55:132
4577091290,6ptp4l441ktimers/312:10:013
927149992825,2cyclictest0-21swapper/309:35:013
927149992825,2cyclictest0-21swapper/309:01:593
927149992824,3cyclictest0-21swapper/310:39:543
92714999280,26cyclictest0-21swapper/311:55:133
92714999280,26cyclictest0-21swapper/311:53:593
92714999280,26cyclictest0-21swapper/308:25:143
92714999280,26cyclictest0-21swapper/307:35:133
927147992825,2cyclictest0-21swapper/210:53:592
927147992824,2cyclictest0-21swapper/210:39:552
92714799280,26cyclictest0-21swapper/207:30:042
927149992725,1cyclictest0-21swapper/310:53:593
92714799270,2cyclictest0-21swapper/211:52:592
4577091270,6ptp4l441ktimers/309:14:563
4577091270,6ptp4l441ktimers/307:15:013
4577091270,5ptp4l441ktimers/312:35:003
927149992623,2cyclictest0-21swapper/312:23:593
4577091260,6ptp4l441ktimers/311:29:563
4577091260,5ptp4l441ktimers/308:59:553
4577091260,5ptp4l441ktimers/308:19:553
927147992522,2cyclictest0-21swapper/212:18:582
927147992522,2cyclictest0-21swapper/212:06:592
927147992421,2cyclictest0-21swapper/209:11:582
927147992420,2cyclictest0-21swapper/208:59:002
927147992419,3cyclictest0-21swapper/212:20:122
927147992218,2cyclictest0-21swapper/210:08:582
927149991917,1cyclictest0-21swapper/310:08:593
927147991916,2cyclictest0-21swapper/207:14:592
927143991711,4cyclictest0-21swapper/107:10:031
927147991411,2cyclictest0-21swapper/211:28:002
9271479960,4cyclictest947991-21turbostat08:19:552
9271479930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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