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2026-03-30 - 19:07
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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 Mon Mar 30, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
356227999585,8cyclictest266-21systemd-journal09:40:011
356227999382,8cyclictest266-21systemd-journal12:05:001
356227999382,8cyclictest266-21systemd-journal12:05:001
356224999083,5cyclictest440288-21kworker/u8:0+events_unbound11:45:010
356224998377,4cyclictest361201-21kworker/u8:3+events_unbound07:45:010
356224998273,6cyclictest438656-21latency_hist11:25:010
356227998172,7cyclictest372598-21latency_hist08:00:011
356224998072,6cyclictest359303-21latency_hist07:20:010
356224997869,6cyclictest408137-21latency_hist09:50:000
356227997667,7cyclictest396468-21latency_hist09:15:011
356224997262,7cyclictest396982-21apt-get09:15:110
356227997062,5cyclictest445262-21kworker/u8:3+events_unbound11:45:191
356224997063,5cyclictest377598-21kworker/u8:1+flush-179:008:50:220
356224997060,8cyclictest432523-21/usr/sbin/munin11:05:240
356227996959,8cyclictest382404-21apt-get08:30:111
356224996962,4cyclictest387166-21kworker/u8:0+events_unbound09:15:010
356227996862,5cyclictest451438-21kworker/u8:3+events_unbound12:15:231
356227996760,5cyclictest364342-21latency_hist07:35:011
356224996762,4cyclictest377598-21kworker/u8:1+events_unbound08:20:250
356224996758,7cyclictest385599-21apt-get08:40:100
356227996661,4cyclictest388474-21kworker/u8:3+flush-179:009:10:001
356227996660,4cyclictest361201-21kworker/u8:3+events_unbound07:50:011
356227996659,4cyclictest424317-21kworker/u8:2+events_unbound11:15:251
356224996659,5cyclictest440288-21kworker/u8:0+flush-179:011:35:220
356227996460,3cyclictest403092-21kworker/u8:3+flush-179:009:35:011
356227996453,9cyclictest369667-21apt-get07:50:131
356224996452,10cyclictest380816-21apt-get08:25:100
356227996358,4cyclictest354584-21kworker/u8:1+flush-179:008:04:551
356224996356,5cyclictest422709-21kworker/u8:0+flush-179:011:00:000
356227996256,4cyclictest456732-21kworker/u8:1+flush-179:012:40:001
356227996254,7cyclictest424317-21kworker/u8:2+flush-179:011:30:001
356224996255,5cyclictest411312-21latency_hist10:00:010
356224996252,8cyclictest266-21systemd-journal12:15:000
356227996156,4cyclictest451364-21kworker/u8:2+flush-179:012:10:221
356227996155,4cyclictest437106-21kworker/u8:3+events_unbound11:20:211
356224996153,6cyclictest427504-21latency_hist10:50:010
356224996054,4cyclictest400935-21kworker/u8:0+flush-179:009:25:220
356227995954,3cyclictest390103-21latency_hist08:55:011
356227995950,7cyclictest424338-21latency_hist10:40:011
356227995949,8cyclictest266-21systemd-journal10:10:011
356227995853,4cyclictest416070-21kworker/u8:0+events_unbound10:25:011
356227995852,4cyclictest372648-21kworker/u8:2+flush-179:008:10:231
356224995751,5cyclictest412896-21kworker/u8:2+flush-179:010:10:220
356224995751,4cyclictest390147-21kworker/u8:2+flush-179:009:40:040
356224995751,4cyclictest374446-21apt-get08:05:110
356227995648,6cyclictest388474-21kworker/u8:3+events_unbound09:00:011
356227995549,5cyclictest448232-21kworker/u8:0+flush-179:012:05:231
356227995545,8cyclictest387166-21kworker/u8:0+flush-179:008:50:001
356227995545,7cyclictest510-21rs:main1
356224995545,8cyclictest422980-21apt-get10:35:120
356227995449,3cyclictest424317-21kworker/u8:2+events_unbound11:30:221
356227995448,4cyclictest337306-21kworker/u8:2+flush-179:007:10:221
356227995447,5cyclictest421136-21latency_hist10:30:001
356227995445,6cyclictest449787-21latency_hist12:00:011
356227995347,4cyclictest404775-21kworker/u8:0+events_unbound10:00:231
356224995349,2cyclictest1-21systemd10:25:000
356224995347,5cyclictest448232-21kworker/u8:0+flush-179:011:55:230
356224995347,5cyclictest437028-21kworker/u8:1+flush-179:011:25:230
356224995346,5cyclictest354584-21kworker/u8:1+flush-179:007:35:230
356224995343,8cyclictest451438-21kworker/u8:3+flush-179:012:34:590
356227995247,4cyclictest403074-21kworker/u8:1+events_unbound09:55:241
356224995247,4cyclictest387166-21kworker/u8:0+flush-179:008:45:170
356224995246,4cyclictest354584-21kworker/u8:1+events_unbound07:30:230
356227995144,5cyclictest337306-21kworker/u8:2+flush-179:007:20:041
356227995143,6cyclictest361201-21kworker/u8:3+flush-179:007:25:211
35622799511,47cyclictest458286-21munin-run12:25:011
356224995146,4cyclictest437028-21kworker/u8:1+events_unbound12:00:140
356224995146,4cyclictest437028-21kworker/u8:1+events_unbound12:00:140
356224995145,5cyclictest361201-21kworker/u8:3+flush-179:007:25:230
356224995144,5cyclictest266-21systemd-journal07:50:180
356227995040,8cyclictest446868-21apt-get11:50:151
356224995046,3cyclictest437028-21kworker/u8:1+flush-179:011:55:000
356224995045,4cyclictest403074-21kworker/u8:1+flush-179:009:50:220
4577091490,13ptp4l61490irq/134-eno1-TxRx-007:10:013
356227994945,3cyclictest422709-21kworker/u8:0+events_unbound10:50:251
356227994944,4cyclictest456732-21kworker/u8:1+events_unbound12:35:011
356227994944,4cyclictest400935-21kworker/u8:0+flush-179:009:30:001
356224994944,4cyclictest424317-21kworker/u8:2+flush-179:010:54:560
356224994943,5cyclictest388474-21kworker/u8:3+events_unbound08:55:240
356224994941,6cyclictest354584-21kworker/u8:1+events_unbound08:00:170
356233994741,5cyclictest411331-21turbostat10:00:003
356224994741,4cyclictest354584-21kworker/u8:1+flush-179:007:20:270
356227994640,5cyclictest390147-21kworker/u8:2+events_unbound09:25:001
356227994640,4cyclictest440288-21kworker/u8:0+flush-179:011:40:101
356227994640,4cyclictest422709-21kworker/u8:0+events_unbound10:55:211
356227994640,4cyclictest354584-21kworker/u8:1+flush-179:008:05:221
356227994638,6cyclictest266-21systemd-journal10:46:211
356224994641,4cyclictest377598-21kworker/u8:1+flush-179:008:35:210
356224994640,5cyclictest387166-21kworker/u8:0+flush-179:009:05:260
35623399450,43cyclictest406556-21turbostat09:44:593
35622799451,41cyclictest382163-21perf08:30:011
356224994542,2cyclictest390147-21kworker/u8:2+events_unbound09:20:240
356224994540,4cyclictest422709-21kworker/u8:0+flush-179:011:00:160
356224994540,4cyclictest416070-21kworker/u8:0+flush-179:010:15:230
356224994539,5cyclictest451438-21kworker/u8:3+flush-179:012:20:220
356227994437,6cyclictest377598-21kworker/u8:1+events_unbound08:15:201
356224994439,4cyclictest377598-21kworker/u8:1+flush-179:008:20:010
35623399430,42cyclictest0-21swapper/312:28:593
35622999430,36cyclictest0-21swapper/212:07:592
356233994240,2cyclictest0-21swapper/311:48:583
356227994239,2cyclictest403074-21kworker/u8:1+events_unbound09:45:221
356224994238,3cyclictest404807-21apt-key09:40:010
356224994237,4cyclictest424317-21kworker/u8:2+flush-179:011:15:250
356224994237,4cyclictest400935-21kworker/u8:0+events_unbound09:30:180
356224994236,4cyclictest354584-21kworker/u8:1+flush-179:007:45:210
35622499420,5cyclictest393313-21ls09:05:000
356233994139,1cyclictest0-21swapper/309:06:003
356227994134,5cyclictest388474-21kworker/u8:3+events_unbound09:00:191
356227994131,8cyclictest434127-21apt-get11:10:121
356227994131,8cyclictest434127-21apt-get11:10:121
356227994130,11cyclictest382183-21kworker/u8:2+flush-179:008:40:161
356227994130,10cyclictest398404-21latency_hist09:20:021
356227994127,11cyclictest357970-21apt-get07:15:141
35622799411,2cyclictest714-21Xorg10:42:591
356224994134,6cyclictest456732-21kworker/u8:1+flush-179:012:35:210
356224994134,6cyclictest416137-21kworker/u8:1+flush-179:010:30:210
356229994037,2cyclictest0-21swapper/211:29:552
356227994036,3cyclictest417721-21awk10:20:001
35622799401,32cyclictest0-21swapper/107:35:141
356227993934,4cyclictest416137-21kworker/u8:1+flush-179:010:30:211
35622799392,4cyclictest0-21swapper/111:00:131
35622799392,31cyclictest414761-21apt-get10:10:131
356224993936,2cyclictest0-21swapper/010:04:590
356224993934,4cyclictest451438-21kworker/u8:3+flush-179:012:15:200
35622499390,2cyclictest714-21Xorg08:30:590
35622999380,36cyclictest0-21swapper/211:45:592
356227993832,5cyclictest456732-21kworker/u8:1+events_unbound12:29:591
356227993831,5cyclictest377598-21kworker/u8:1+events_unbound08:35:241
356224993834,3cyclictest424317-21kworker/u8:2+flush-179:011:10:210
356224993834,3cyclictest424317-21kworker/u8:2+flush-179:011:10:210
356224993833,4cyclictest424317-21kworker/u8:2+events_unbound10:40:220
356233993734,2cyclictest0-21swapper/308:47:593
35623399370,35cyclictest0-21swapper/309:21:003
35622999370,35cyclictest0-21swapper/209:29:592
356227993731,4cyclictest354584-21kworker/u8:1+events_unbound07:40:241
356227993726,10cyclictest409685-21unixbench_singl09:50:251
35622799372,32cyclictest0-21swapper/111:35:131
356233993634,1cyclictest0-21swapper/311:43:593
356233993634,1cyclictest0-21swapper/311:39:563
356233993634,1cyclictest0-21swapper/309:02:593
35623399360,1cyclictest0-21swapper/310:14:553
35623399360,1cyclictest0-21swapper/309:49:593
35623399360,1cyclictest0-21swapper/307:38:593
356229993634,1cyclictest0-21swapper/211:44:592
356229993633,2cyclictest0-21swapper/207:20:582
356227993630,4cyclictest380647-21latency_hist08:25:011
356224993631,4cyclictest445261-21kworker/u8:2+flush-179:011:45:240
356233993533,1cyclictest0-21swapper/310:24:553
356233993533,1cyclictest0-21swapper/310:15:593
356229993532,2cyclictest0-21swapper/212:36:582
35622999350,1cyclictest0-21swapper/209:44:562
35622999350,1cyclictest0-21swapper/209:11:002
356224993528,5cyclictest714-21Xorg11:34:590
356224993527,6cyclictest452999-21apt-get12:10:000
356224993527,6cyclictest266-21systemd-journal12:25:220
356224993526,6cyclictest0-21swapper/008:10:140
356229993432,1cyclictest0-21swapper/212:35:002
35622499340,33cyclictest419808-21http10:25:140
356229993330,2cyclictest0-21swapper/211:59:592
356229993330,2cyclictest0-21swapper/209:31:592
356229993330,2cyclictest0-21swapper/208:43:592
356229993326,6cyclictest0-21swapper/210:51:592
356229993326,6cyclictest0-21swapper/207:57:592
4577091320,5ptp4l441ktimers/310:29:553
356229993229,2cyclictest0-21swapper/211:01:592
356229993229,2cyclictest0-21swapper/209:00:582
356229993229,2cyclictest0-21swapper/208:58:002
356224993227,4cyclictest413177-21apt-get10:05:120
35622499320,30cyclictest714-21Xorg07:14:000
4577091310,1ptp4l441ktimers/310:41:273
356233993127,3cyclictest386950-21sleep08:45:003
356233993125,4cyclictest440259-21turbostat11:30:003
356229993129,1cyclictest0-21swapper/210:34:592
356229993128,2cyclictest0-21swapper/212:04:562
356229993128,2cyclictest0-21swapper/212:04:562
356229993125,5cyclictest0-21swapper/212:10:012
356229993125,5cyclictest0-21swapper/209:15:132
356229993121,8cyclictest0-21swapper/211:35:012
356229993121,8cyclictest0-21swapper/210:05:592
356227993126,4cyclictest432828-21kworker/u8:1+events_unbound11:05:241
4577091300,7ptp4l441ktimers/311:10:013
356233993027,2cyclictest0-21swapper/311:00:143
35623399300,28cyclictest0-21swapper/307:40:033
356229993027,2cyclictest0-21swapper/212:15:032
356229993027,2cyclictest0-21swapper/210:45:132
356229993027,2cyclictest0-21swapper/210:27:592
356229993027,2cyclictest0-21swapper/208:01:592
35622999300,28cyclictest0-21swapper/212:20:592
35622999300,28cyclictest0-21swapper/207:10:172
35622999300,1cyclictest0-21swapper/211:39:592
356224993025,4cyclictest361201-21kworker/u8:3+events_unbound07:55:200
4577091290,7ptp4l441ktimers/310:05:003
4577091290,7ptp4l441ktimers/308:30:023
4577091290,6ptp4l441ktimers/308:10:003
4577091290,6ptp4l441ktimers/307:20:003
356233992926,2cyclictest0-21swapper/312:10:023
35623399290,28cyclictest0-21swapper/308:30:143
35623399290,27cyclictest0-21swapper/312:35:133
35623399290,27cyclictest0-21swapper/309:50:133
35623399290,27cyclictest0-21swapper/307:45:123
35623399290,1cyclictest0-21swapper/308:15:133
35623399290,1cyclictest0-21swapper/308:00:133
35623399290,1cyclictest0-21swapper/307:10:183
356229992927,1cyclictest0-21swapper/211:50:162
356229992926,2cyclictest0-21swapper/210:18:002
35622999290,28cyclictest0-21swapper/207:40:032
35622999290,27cyclictest0-21swapper/210:20:032
35622999290,27cyclictest0-21swapper/209:55:142
35622999290,1cyclictest0-21swapper/208:45:132
4577091280,7ptp4l441ktimers/309:40:013
4577091280,6ptp4l441ktimers/312:05:003
4577091280,6ptp4l441ktimers/312:05:003
4577091280,6ptp4l441ktimers/311:20:013
4577091280,6ptp4l441ktimers/309:15:003
4577091280,6ptp4l441ktimers/308:55:023
4577091280,6ptp4l441ktimers/308:00:013
356233992826,1cyclictest0-21swapper/311:55:153
356233992825,2cyclictest0-21swapper/311:50:163
35623399280,26cyclictest0-21swapper/312:15:023
35623399280,26cyclictest0-21swapper/311:30:113
35623399280,26cyclictest0-21swapper/310:50:143
35623399280,26cyclictest0-21swapper/310:45:133
35623399280,26cyclictest0-21swapper/307:25:113
356229992825,2cyclictest0-21swapper/212:28:592
356229992825,2cyclictest0-21swapper/210:04:562
356229992825,2cyclictest0-21swapper/208:25:102
356229992825,2cyclictest0-21swapper/207:38:582
35622999280,2cyclictest0-21swapper/207:30:132
35622999280,26cyclictest0-21swapper/211:20:592
35622999280,26cyclictest0-21swapper/211:05:132
35622999280,26cyclictest0-21swapper/208:51:002
4577091270,6ptp4l61490irq/134-eno1-TxRx-011:25:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-010:35:003
4577091270,6ptp4l441ktimers/312:34:593
4577091270,6ptp4l441ktimers/310:59:553
4577091270,6ptp4l441ktimers/310:40:013
4577091270,6ptp4l441ktimers/309:30:003
4577091270,6ptp4l441ktimers/308:24:553
4577091270,6ptp4l441ktimers/307:35:003
4577091270,5ptp4l441ktimers/308:59:563
4577091270,4ptp4l441ktimers/308:40:003
356233992725,1cyclictest0-21swapper/309:15:013
356229992724,2cyclictest0-21swapper/209:09:542
356229992724,2cyclictest0-21swapper/207:45:132
356229992721,5cyclictest0-21swapper/207:19:592
4577091260,5ptp4l441ktimers/309:34:553
4577091260,5ptp4l441ktimers/307:54:553
4577091260,4ptp4l441ktimers/312:10:003
35623399260,2cyclictest361174-21turbostat07:25:003
356229992623,2cyclictest0-21swapper/211:14:552
356229992623,2cyclictest0-21swapper/211:14:552
356229992623,2cyclictest0-21swapper/209:52:592
356229992623,2cyclictest0-21swapper/208:39:002
356229992623,2cyclictest0-21swapper/208:14:542
35622999260,24cyclictest0-21swapper/208:20:142
35622999260,1cyclictest0-21swapper/211:15:152
4577091250,4ptp4l441ktimers/310:09:553
4577091250,3ptp4l441ktimers/312:25:013
356233992523,1cyclictest0-21swapper/311:11:593
356233992523,1cyclictest0-21swapper/311:11:593
356229992422,1cyclictest0-21swapper/210:40:122
231999240,13rtkit-daemon355094-21df07:05:160
356229992320,2cyclictest0-21swapper/209:47:592
356229992320,2cyclictest0-21swapper/209:20:592
356229992320,2cyclictest0-21swapper/208:30:142
356229992320,2cyclictest0-21swapper/207:27:002
356229992316,6cyclictest0-21swapper/210:59:592
4577091220,2ptp4l441ktimers/308:14:563
356229992220,1cyclictest0-21swapper/207:53:582
356229992219,2cyclictest0-21swapper/210:37:592
35622799202,16cyclictest356097-21latency_hist07:10:021
356229991814,2cyclictest0-21swapper/210:14:542
356229991714,2cyclictest0-21swapper/208:15:132
356229991513,1cyclictest0-21swapper/209:35:592
356229991511,2cyclictest375785-21turbostat08:10:002
3562299930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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