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2026-03-27 - 21:04
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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 Fri Mar 27, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
45124999116104,9cyclictest528624-21latency_hist11:10:010
45125399111105,4cyclictest530452-21kworker/u8:1+events_unbound11:40:021
4512499910999,7cyclictest537077-21kworker/u8:0+events_unbound11:55:020
4512499910999,7cyclictest537077-21kworker/u8:0+events_unbound11:55:010
4512499910393,7cyclictest519088-21latency_hist10:40:010
451253999792,4cyclictest530452-21kworker/u8:1+events_unbound11:15:001
451253999589,4cyclictest471872-21kworker/u8:1+flush-179:008:30:201
451253999490,3cyclictest543865-21kworker/u8:3+events_unbound12:15:201
451253999387,4cyclictest523879-21kworker/u8:2+events_unbound11:00:181
451253999282,8cyclictest266-21systemd-journal09:20:011
451253999084,4cyclictest519822-21kworker/u8:1+events_unbound10:45:191
451253998682,3cyclictest543865-21kworker/u8:3+events_unbound12:10:241
451253998676,7cyclictest510848-21latency_hist10:15:011
451253998571,10cyclictest538439-21latency_hist11:40:001
451249998578,5cyclictest552212-21latency_hist12:20:000
451249998377,4cyclictest553852-21kworker/u8:1+flush-179:012:30:250
451249998377,4cyclictest471872-21kworker/u8:1+flush-179:008:35:010
451253998277,4cyclictest502880-21kworker/u8:3+flush-179:009:50:261
451253998276,4cyclictest501839-21kworker/u8:2+flush-179:010:20:211
451253998276,4cyclictest501839-21kworker/u8:2+flush-179:010:20:201
451249998273,7cyclictest543865-21kworker/u8:3+events_unbound12:10:020
451253997974,4cyclictest478744-21kworker/u8:0+flush-179:008:40:261
451249997971,6cyclictest501839-21kworker/u8:2+flush-179:010:20:010
451253997671,4cyclictest548767-21latency_hist12:10:011
451253997670,4cyclictest543858-21kworker/u8:2+events_unbound12:35:201
451249997665,8cyclictest461874-21kworker/u8:1+flush-179:007:45:210
451253997570,4cyclictest480139-21kworker/u8:3+flush-179:009:05:251
451249997568,4cyclictest461874-21kworker/u8:1+events_unbound07:55:250
451249997563,10cyclictest489890-21apt-get09:10:100
451249997465,6cyclictest455082-21kworker/u8:0+flush-179:007:25:220
451253997359,11cyclictest494430-21apt-get09:24:591
451249997368,3cyclictest543858-21kworker/u8:2+flush-179:011:55:220
451253997263,6cyclictest502893-21latency_hist09:50:011
451253997263,6cyclictest499462-21latency_hist09:40:021
451249997265,5cyclictest471872-21kworker/u8:1+events_unbound08:20:010
451249997264,5cyclictest520719-21kworker/u8:3+flush-179:011:20:220
451249997262,8cyclictest522514-21apt-get10:50:110
451253997167,3cyclictest501839-21kworker/u8:2+events_unbound10:00:221
451253997162,7cyclictest488022-21kworker/u8:0+flush-179:009:10:201
451249997163,6cyclictest266-21systemd-journal11:13:270
451253997064,5cyclictest501839-21kworker/u8:2+events_unbound09:55:131
451253997060,8cyclictest266-21systemd-journal11:59:591
451253996865,2cyclictest0-21swapper/108:05:591
451253996864,3cyclictest530452-21kworker/u8:1+flush-179:011:15:261
451253996864,3cyclictest451157-21kworker/u8:2+flush-179:007:19:561
451249996859,6cyclictest461874-21kworker/u8:1+flush-179:008:00:200
451253996763,3cyclictest507650-21kworker/u8:1+events_unbound10:15:211
451253996763,3cyclictest501839-21kworker/u8:2+events_unbound10:40:141
451249996764,2cyclictest191rcuc/007:20:000
451253996661,4cyclictest480139-21kworker/u8:3+events_unbound09:30:261
451253996656,8cyclictest496247-21kworker/u8:1+flush-179:009:45:001
451253996561,3cyclictest478744-21kworker/u8:0+events_unbound08:35:241
451253996561,3cyclictest451157-21kworker/u8:2+events_unbound07:30:251
45125399650,1cyclictest0-21swapper/112:30:591
451249996559,5cyclictest499420-21kworker/u8:0+flush-179:009:39:560
451253996460,3cyclictest480139-21kworker/u8:3+events_unbound09:25:131
451253996459,3cyclictest543858-21kworker/u8:2+flush-179:012:24:551
451253996456,3cyclictest519822-21kworker/u8:1+events_unbound10:50:161
45124999630,2cyclictest714-21Xorg09:07:000
451253996257,4cyclictest509305-21kworker/u8:3+events_unbound10:29:561
451249996250,9cyclictest519822-21kworker/u8:1+events_unbound10:45:140
451253996157,3cyclictest520719-21kworker/u8:3+flush-179:011:24:551
451253996152,7cyclictest540754-21cat11:45:011
451249996155,4cyclictest520719-21kworker/u8:3+flush-179:010:55:240
451249996154,5cyclictest451157-21kworker/u8:2+flush-179:007:15:010
451249996152,7cyclictest530452-21kworker/u8:1+events_unbound11:20:000
451249996152,6cyclictest552763-21journal-offline12:20:140
451253996055,4cyclictest543858-21kworker/u8:2+events_unbound12:00:241
451249996053,5cyclictest501839-21kworker/u8:2+flush-179:010:20:210
451249996053,5cyclictest501839-21kworker/u8:2+flush-179:010:20:210
451249996051,6cyclictest459129-21kworker/u8:0+flush-179:007:35:210
451258995955,2cyclictest0-21swapper/309:07:003
451253995955,3cyclictest520719-21kworker/u8:3+events_unbound11:09:551
451253995955,3cyclictest507650-21kworker/u8:1+events_unbound10:05:211
451249995950,7cyclictest483311-21kworker/u8:1+flush-179:009:00:000
451253995854,3cyclictest459129-21kworker/u8:0+events_unbound07:35:271
451253995854,3cyclictest455082-21kworker/u8:0+events_unbound07:25:241
451253995853,4cyclictest483311-21kworker/u8:1+events_unbound08:50:201
451249995853,3cyclictest480139-21kworker/u8:3+flush-179:009:20:200
451249995852,4cyclictest496264-21latency_hist09:30:010
451249995849,6cyclictest266-21systemd-journal08:13:330
451253995753,3cyclictest455082-21kworker/u8:0+events_unbound07:21:351
451249995752,3cyclictest480350-21apt-get08:40:110
451249995751,4cyclictest540812-21apt-get11:45:110
451253995651,4cyclictest459129-21kworker/u8:0+events_unbound07:40:301
451253995651,4cyclictest459129-21kworker/u8:0+events_unbound07:40:301
451249995651,3cyclictest523879-21kworker/u8:2+events_unbound11:00:130
451249995647,7cyclictest483311-21kworker/u8:1+flush-179:008:50:210
4577091550,12ptp4l61490irq/134-eno1-TxRx-007:09:553
451253995551,3cyclictest530452-21kworker/u8:1+events_unbound11:50:081
451253995551,3cyclictest530452-21kworker/u8:1+events_unbound11:50:081
451253995550,4cyclictest480139-21kworker/u8:3+events_unbound08:45:151
451253995550,4cyclictest468661-21kworker/u8:2+events_unbound08:14:221
451253995450,3cyclictest466523-21kworker/u8:0+flush-179:007:59:541
451249995447,5cyclictest516941-21kworker/u8:0+flush-179:010:30:220
451253995349,3cyclictest530452-21kworker/u8:1+events_unbound11:34:281
451253995349,3cyclictest509305-21kworker/u8:3+events_unbound10:33:341
451253995349,3cyclictest471877-21kworker/u8:3+flush-179:008:24:551
451253995348,4cyclictest471872-21kworker/u8:1+events_unbound08:19:221
451253995345,3cyclictest444874-21kworker/u8:1+events_unbound07:10:131
451249995348,4cyclictest530452-21kworker/u8:1+events_unbound11:35:260
451249995346,5cyclictest266-21systemd-journal11:45:000
451249995342,8cyclictest507650-21kworker/u8:1+flush-179:010:10:210
451253995248,3cyclictest461874-21kworker/u8:1+events_unbound08:00:171
451249995242,7cyclictest266-21systemd-journal10:04:590
451249995145,4cyclictest471877-21kworker/u8:3+events_unbound08:25:190
451253995045,4cyclictest461874-21kworker/u8:1+events_unbound07:45:221
451249995044,4cyclictest266-21systemd-journal11:25:270
451253994945,3cyclictest462350-21kworker/u8:2+events_unbound07:50:201
451253994944,4cyclictest543858-21kworker/u8:2+events_unbound12:28:291
451249994943,4cyclictest543865-21kworker/u8:3+events_unbound12:05:140
451253994840,6cyclictest520719-21kworker/u8:3+flush-179:011:30:001
451249994839,5cyclictest520719-21kworker/u8:3+flush-179:011:30:050
451249994742,4cyclictest491202-21kworker/u8:1+events_unbound09:15:230
451249994730,16cyclictest689-21sshd08:39:320
451253994642,3cyclictest516941-21kworker/u8:0+events_unbound10:35:171
451253994642,3cyclictest480139-21kworker/u8:3+events_unbound08:59:301
451258994542,2cyclictest0-21swapper/307:29:593
45125899450,43cyclictest504487-21turbostat09:55:003
451253994540,4cyclictest488022-21kworker/u8:0+events_unbound09:00:341
451249994540,4cyclictest543858-21kworker/u8:2+flush-179:012:25:260
451249994540,3cyclictest480139-21kworker/u8:3+flush-179:008:45:200
451249994540,3cyclictest471872-21kworker/u8:1+events_unbound08:20:130
451249994539,4cyclictest499420-21kworker/u8:0+flush-179:009:45:200
451249994439,4cyclictest459129-21kworker/u8:0+flush-179:007:40:230
451249994439,4cyclictest459129-21kworker/u8:0+flush-179:007:40:230
451249994439,3cyclictest507650-21kworker/u8:1+flush-179:010:05:190
45124999440,42cyclictest714-21Xorg12:04:590
45125599430,41cyclictest0-21swapper/209:01:582
451249994338,4cyclictest468661-21kworker/u8:2+flush-179:008:05:210
451249994336,4cyclictest496247-21kworker/u8:1+flush-179:009:40:160
45125899420,40cyclictest509273-21turbostat10:09:593
45124999420,41cyclictest0-21swapper/007:24:590
45124999410,1cyclictest0-21swapper/009:59:560
45125899400,4cyclictest522268-21turbostat10:50:013
45125899400,38cyclictest550614-21turbostat12:15:003
45124999400,38cyclictest714-21Xorg09:31:590
45125899390,4cyclictest536853-21turbostat11:35:003
451255993936,2cyclictest0-21swapper/211:09:002
451249993935,2cyclictest515894-21munin-run10:30:000
45124999390,2cyclictest714-21Xorg09:02:590
451258993836,1cyclictest0-21swapper/308:59:553
45125899380,37cyclictest0-21swapper/310:21:583
45125899380,37cyclictest0-21swapper/310:21:583
45125599380,36cyclictest0-21swapper/211:39:592
451253993834,3cyclictest471877-21kworker/u8:3+events_unbound08:26:341
451255993734,2cyclictest0-21swapper/210:14:592
45125599370,35cyclictest0-21swapper/209:52:582
451253993732,4cyclictest523879-21kworker/u8:2+flush-179:010:59:571
451249993732,4cyclictest519822-21kworker/u8:1+flush-179:010:40:210
451249993732,4cyclictest451157-21kworker/u8:2+flush-179:007:30:210
451258993634,1cyclictest0-21swapper/312:24:593
451258993634,1cyclictest0-21swapper/312:04:593
451258993633,2cyclictest0-21swapper/308:49:593
45125899360,35cyclictest0-21swapper/310:04:553
451255993633,2cyclictest0-21swapper/210:06:592
451255993633,2cyclictest0-21swapper/208:31:592
45125599360,1cyclictest0-21swapper/211:00:592
451258993533,1cyclictest0-21swapper/311:06:593
451258993533,1cyclictest0-21swapper/310:12:593
45125899350,1cyclictest0-21swapper/307:23:593
451255993533,1cyclictest0-21swapper/208:25:002
451255993532,2cyclictest0-21swapper/209:29:552
451255993531,2cyclictest0-21swapper/209:19:592
451258993432,1cyclictest0-21swapper/309:59:563
451258993432,1cyclictest0-21swapper/309:02:593
451258993428,5cyclictest542157-21turbostat11:50:003
451255993431,2cyclictest0-21swapper/212:17:582
451255993431,2cyclictest0-21swapper/210:45:592
451255993431,2cyclictest0-21swapper/210:26:582
451255993330,2cyclictest0-21swapper/211:23:592
451255993330,2cyclictest0-21swapper/209:36:592
451249993327,5cyclictest502880-21kworker/u8:3+events_unbound09:50:240
451258993230,1cyclictest0-21swapper/308:42:593
451258993229,2cyclictest0-21swapper/310:44:593
451255993229,2cyclictest0-21swapper/210:40:582
451255993229,2cyclictest0-21swapper/208:45:592
451255993228,2cyclictest0-21swapper/212:39:552
45125599320,30cyclictest0-21swapper/210:51:592
451249993226,4cyclictest714-21Xorg12:38:590
4577091310,11ptp4l61490irq/134-eno1-TxRx-009:40:023
451258993129,1cyclictest0-21swapper/311:41:593
451258993129,1cyclictest0-21swapper/310:54:553
451255993128,2cyclictest0-21swapper/208:55:592
451258993028,1cyclictest0-21swapper/311:59:553
451258993028,1cyclictest0-21swapper/309:31:593
451258993028,1cyclictest0-21swapper/308:10:003
451258993028,1cyclictest0-21swapper/307:20:003
45125899300,29cyclictest0-21swapper/309:25:023
45125899300,28cyclictest0-21swapper/309:45:133
451255993028,1cyclictest0-21swapper/210:00:002
451255993028,1cyclictest0-21swapper/207:59:592
451255993027,2cyclictest0-21swapper/211:32:592
451255993026,2cyclictest0-21swapper/209:30:142
451255993026,2cyclictest0-21swapper/207:17:592
4577091290,5ptp4l441ktimers/309:24:553
451258992927,1cyclictest0-21swapper/311:04:563
451258992927,1cyclictest0-21swapper/309:16:593
451258992926,2cyclictest0-21swapper/310:15:023
451258992926,2cyclictest0-21swapper/308:00:113
45125899290,27cyclictest0-21swapper/308:30:133
451255992926,2cyclictest0-21swapper/212:25:132
451255992926,2cyclictest0-21swapper/211:15:122
451255992926,2cyclictest0-21swapper/210:35:132
451255992926,2cyclictest0-21swapper/210:00:132
451255992926,2cyclictest0-21swapper/208:10:142
451255992926,2cyclictest0-21swapper/208:05:132
451255992926,2cyclictest0-21swapper/207:44:552
451255992926,2cyclictest0-21swapper/207:44:552
451255992926,2cyclictest0-21swapper/207:25:132
45125599290,28cyclictest0-21swapper/211:10:042
45125599290,28cyclictest0-21swapper/210:20:132
45125599290,28cyclictest0-21swapper/210:20:122
45125599290,27cyclictest0-21swapper/212:30:152
45125599290,27cyclictest0-21swapper/212:10:012
45125599290,27cyclictest0-21swapper/208:40:132
45125599290,27cyclictest0-21swapper/208:35:022
451249992923,4cyclictest465003-21phc2sys-jitter07:50:230
4577091280,7ptp4l441ktimers/307:40:013
451258992826,1cyclictest0-21swapper/310:30:143
451258992825,2cyclictest0-21swapper/308:20:103
451258992823,4cyclictest515906-21turbostat10:30:003
45125899280,27cyclictest0-21swapper/308:35:123
45125899280,26cyclictest0-21swapper/312:05:593
45125899280,26cyclictest0-21swapper/311:10:123
451255992825,2cyclictest0-21swapper/212:05:132
451255992825,2cyclictest0-21swapper/211:43:592
451255992825,2cyclictest0-21swapper/207:20:122
4577091270,6ptp4l61490irq/134-eno1-TxRx-011:20:003
4577091270,6ptp4l441ktimers/312:40:013
4577091270,6ptp4l441ktimers/308:55:013
4577091270,6ptp4l441ktimers/308:15:003
4577091270,6ptp4l441ktimers/307:35:013
451258992725,1cyclictest0-21swapper/311:54:003
451258992725,1cyclictest0-21swapper/311:53:593
451258992724,2cyclictest0-21swapper/308:18:593
45125899270,26cyclictest0-21swapper/312:26:003
45125899270,26cyclictest0-21swapper/311:40:023
45125899270,1cyclictest0-21swapper/310:39:583
451255992724,2cyclictest0-21swapper/208:15:592
451255992723,2cyclictest0-21swapper/210:32:002
4577091260,6ptp4l61490irq/134-eno1-TxRx-009:45:013
4577091260,6ptp4l61490irq/134-eno1-TxRx-009:14:553
4577091260,6ptp4l61490irq/134-eno1-TxRx-008:30:013
4577091260,6ptp4l61490irq/134-eno1-TxRx-007:45:003
4577091260,6ptp4l61490irq/134-eno1-TxRx-007:45:003
4577091260,6ptp4l441ktimers/312:35:013
4577091260,6ptp4l441ktimers/312:20:003
4577091260,5ptp4l61490irq/134-eno1-TxRx-011:00:003
451258992624,1cyclictest0-21swapper/307:47:593
451255992623,2cyclictest0-21swapper/211:48:582
45125599260,24cyclictest0-21swapper/211:51:592
45125599260,24cyclictest0-21swapper/211:51:592
45125599260,24cyclictest0-21swapper/210:17:002
45125599260,24cyclictest0-21swapper/209:09:552
45125599260,24cyclictest0-21swapper/207:47:592
45125599260,24cyclictest0-21swapper/207:32:592
45125599260,24cyclictest0-21swapper/207:13:052
4577091250,6ptp4l61490irq/134-eno1-TxRx-011:24:563
4577091250,4ptp4l441ktimers/307:59:563
451258992523,1cyclictest0-21swapper/307:10:263
4577091240,5ptp4l61490irq/134-eno1-TxRx-011:29:553
451255992421,2cyclictest0-21swapper/210:55:592
451255992421,2cyclictest0-21swapper/209:15:012
451255992421,2cyclictest0-21swapper/207:40:002
451255992320,2cyclictest0-21swapper/211:56:002
451255992320,2cyclictest0-21swapper/207:54:542
451258992220,1cyclictest0-21swapper/307:50:593
451255992220,1cyclictest0-21swapper/209:20:112
451255992220,1cyclictest0-21swapper/208:05:012
451255992219,2cyclictest0-21swapper/209:45:032
451255992219,2cyclictest0-21swapper/208:26:582
451255992118,2cyclictest0-21swapper/209:44:562
451253991914,4cyclictest0-21swapper/107:10:011
231999190,9rtkit-daemon23940-21sendmail-mta07:05:440
451255991714,2cyclictest0-21swapper/211:27:002
451255991614,1cyclictest0-21swapper/208:54:592
451255991512,2cyclictest0-21swapper/212:21:592
451255991411,2cyclictest0-21swapper/212:00:592
4512559930,2cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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