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2026-06-23 - 21:19
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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 23, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
339699799131119,8cyclictest3442837-21latency_hist09:30:020
339699899129121,5cyclictest3423207-21kworker/u8:0+flush-179:009:25:011
339699899126117,6cyclictest3411829-21apt-get07:55:021
339699799123117,3cyclictest3457389-21kworker/u8:0+events_unbound10:25:000
339699799123113,7cyclictest3489516-21apt-get11:55:000
339699799123113,7cyclictest3489516-21apt-get11:55:000
339699899120111,7cyclictest3489516-21apt-get11:55:031
339699799119112,5cyclictest3494521-21kworker/u8:0+events_unbound12:20:010
339699899115106,6cyclictest3463524-21latency_hist10:35:011
339699799115108,5cyclictest3465389-21kworker/u8:0+flush-179:011:25:010
339699899114103,8cyclictest1213033-21systemd-journal09:55:011
339699799109102,5cyclictest3429572-21kworker/u8:1+flush-179:009:15:010
339699899108100,6cyclictest1213033-21systemd-journal07:50:001
33969979910699,6cyclictest3504142-21kworker/u8:1+events_unbound12:40:010
33969979910496,6cyclictest3469870-21kworker/u8:1+flush-179:011:10:000
33969989910393,7cyclictest3458757-21latency_hist10:20:011
33969979910293,7cyclictest3465389-21kworker/u8:0+events_unbound11:45:000
33969979910195,4cyclictest3457389-21kworker/u8:0+flush-179:010:30:250
33969979910195,4cyclictest3423207-21kworker/u8:0+flush-179:009:35:240
33969989910085,10cyclictest510-21rs:main1
3396997999993,4cyclictest3491628-21apt-get12:00:110
3396997999993,4cyclictest3465389-21kworker/u8:0+flush-179:011:00:250
3396997999887,7cyclictest3423221-21latency_hist08:30:010
3396997999687,6cyclictest3490002-21kworker/u8:2+events_unbound12:35:000
3396997999677,14cyclictest1213033-21systemd-journal09:20:000
3396997999588,5cyclictest3395100-21kworker/u8:3+events_unbound07:10:020
3396998999383,6cyclictest3484985-21kworker/u8:1+flush-179:011:40:231
3396997999386,5cyclictest3410217-21kworker/u8:2+events_unbound08:15:010
3396997999383,6cyclictest3380721-21kworker/u8:0+flush-179:007:25:200
3396997999282,8cyclictest3465389-21kworker/u8:0+events_unbound11:40:000
3396997999282,7cyclictest3380721-21kworker/u8:0+events_unbound07:45:010
3396998998760,23cyclictest1213033-21systemd-journal08:40:381
3396997998780,5cyclictest3476821-21kworker/u8:2+flush-179:011:30:200
3396997998780,5cyclictest3406416-21kworker/u8:3+flush-179:007:50:170
3396998998680,4cyclictest3431173-21latency_hist08:55:011
3396998998557,17cyclictest3457153-21latency_hist10:15:021
3396997998576,5cyclictest3429572-21kworker/u8:1+events_unbound09:35:000
3396997998572,4cyclictest3406416-21kworker/u8:3+events_unbound08:20:000
3396997998477,5cyclictest3425063-21apt-get08:35:120
3396997998476,5cyclictest3429572-21kworker/u8:1+flush-179:009:45:210
3396997998476,4cyclictest3395100-21kworker/u8:3+events_unbound07:15:200
339699799840,82cyclictest1-21systemd10:10:000
3396998998374,6cyclictest510-21rs:main1
3396997998377,4cyclictest3490002-21kworker/u8:2+flush-179:012:05:270
3396997998374,6cyclictest3411865-21kworker/u8:0+flush-179:008:00:010
3396997998275,4cyclictest3461935-21latency_hist10:30:000
3396998998174,5cyclictest3451042-21apt-get09:55:111
3396998998172,6cyclictest3465389-21kworker/u8:0+events_unbound11:15:001
3396997998073,5cyclictest3429572-21kworker/u8:1+flush-179:009:20:210
3396998997970,6cyclictest3449203-21latency_hist09:50:011
3396998997969,8cyclictest3493215-21apt-get12:05:131
3396998997965,10cyclictest3406523-21apt-get07:40:011
3396997997971,5cyclictest3380721-21kworker/u8:0+flush-179:007:40:160
3396997997872,4cyclictest3469870-21kworker/u8:1+flush-179:010:55:160
3396997997770,5cyclictest3494521-21kworker/u8:0+flush-179:012:25:250
3396997997769,5cyclictest3463511-21kworker/u8:3+events_unbound10:35:230
3396997997769,5cyclictest3453967-21kworker/u8:3+flush-179:010:15:180
3396997997768,5cyclictest3423207-21kworker/u8:0+flush-179:010:00:240
3396998997668,5cyclictest3404844-21latency_hist07:35:011
3396998997662,11cyclictest3406416-21kworker/u8:3+flush-179:008:50:011
3396998997662,11cyclictest3406416-21kworker/u8:3+flush-179:008:50:001
3396997997669,4cyclictest3380721-21kworker/u8:0+flush-179:007:10:220
3396997997567,5cyclictest3463511-21kworker/u8:3+events_unbound10:50:010
3396997997467,5cyclictest3480223-21apt-get11:25:100
3396997997466,6cyclictest3484985-21kworker/u8:1+flush-179:011:45:150
3396997997367,4cyclictest3410217-21kworker/u8:2+events_unbound08:10:000
3396998997163,6cyclictest3396902-21kworker/u8:2+flush-179:007:20:001
3396997997166,3cyclictest3423207-21kworker/u8:0+events_unbound08:50:200
3396997997165,4cyclictest3434365-21latency_hist09:05:010
3396997997162,7cyclictest3446068-21kworker/u8:2+events_unbound09:40:240
3396998997063,5cyclictest3429572-21kworker/u8:1+flush-179:009:00:131
3396998996961,6cyclictest3470145-21apt-get10:55:111
3396997996964,4cyclictest3380721-21kworker/u8:0+flush-179:007:39:560
3396998996861,5cyclictest3484985-21kworker/u8:1+flush-179:012:10:241
3396998996859,6cyclictest3490002-21kworker/u8:2+events_unbound12:30:241
3396998996858,7cyclictest3423207-21kworker/u8:0+flush-179:009:30:131
339699899681,65cyclictest1-21systemd11:50:001
3396998996761,4cyclictest3411865-21kworker/u8:0+flush-179:008:00:211
3396998996760,5cyclictest3403257-21latency_hist07:30:011
3396998996757,7cyclictest1213033-21systemd-journal07:10:361
3396997996762,4cyclictest3380721-21kworker/u8:0+flush-179:007:30:240
3396997996760,5cyclictest3423207-21kworker/u8:0+flush-179:008:30:190
3396997996760,4cyclictest3498472-21kworker/u8:1+flush-179:012:20:240
3396997996758,6cyclictest3465389-21kworker/u8:0+flush-179:010:50:210
3396998996662,2cyclictest714-21Xorg08:55:591
3396998996657,7cyclictest3423207-21kworker/u8:0+flush-179:009:20:001
3396998996655,8cyclictest3476821-21kworker/u8:2+events_unbound11:20:011
3396997996661,4cyclictest3421613-21kworker/u8:1+flush-179:008:25:010
3396997996659,5cyclictest3463511-21kworker/u8:3+flush-179:010:40:240
3396997996557,5cyclictest3406416-21kworker/u8:3+events_unbound08:45:150
3396997996557,5cyclictest3406416-21kworker/u8:3+events_unbound08:45:140
3396997996554,5cyclictest3465389-21kworker/u8:0+events_unbound11:10:160
3396998996457,5cyclictest3471480-21apt-get11:00:031
3396998996449,14cyclictest3463511-21kworker/u8:3+flush-179:010:35:141
3396997996455,7cyclictest3481599-21kworker/u8:3+flush-179:011:55:110
3396998996355,5cyclictest3465389-21kworker/u8:0+flush-179:010:55:001
3396998996255,5cyclictest3453967-21kworker/u8:3+flush-179:010:20:141
3396998996254,6cyclictest1213033-21systemd-journal11:54:521
3396998996254,6cyclictest1213033-21systemd-journal11:54:521
3396997996249,5cyclictest3423207-21kworker/u8:0+flush-179:008:55:230
3396998996156,4cyclictest3446068-21kworker/u8:2+flush-179:009:40:251
339699899611,57cyclictest1-21systemd11:40:001
3396997996152,7cyclictest3484985-21kworker/u8:1+flush-179:012:10:260
3396998995949,8cyclictest3380721-21kworker/u8:0+flush-179:007:25:001
3396998995949,6cyclictest3429572-21kworker/u8:1+events_unbound09:05:231
3396998995851,5cyclictest3494521-21kworker/u8:0+flush-179:012:20:181
3396997995851,5cyclictest3465389-21kworker/u8:0+flush-179:011:15:200
3396998995649,5cyclictest3406416-21kworker/u8:3+flush-179:007:55:001
3396998995546,7cyclictest3494521-21kworker/u8:0+flush-179:012:25:211
3396998995546,7cyclictest3494521-21kworker/u8:0+events_unbound12:15:231
3396998995546,7cyclictest3406416-21kworker/u8:3+flush-179:008:10:231
3396998995444,8cyclictest3453967-21kworker/u8:3+flush-179:010:05:001
3396998995437,15cyclictest714-21Xorg10:42:001
3397004995349,2cyclictest0-21swapper/310:09:593
3396998995346,5cyclictest3418417-21kworker/u8:0+flush-179:008:15:271
3396998995345,6cyclictest3421613-21kworker/u8:1+flush-179:008:25:251
3396998995343,8cyclictest3481599-21kworker/u8:3+flush-179:011:30:151
3396998995335,16cyclictest714-21Xorg09:13:591
3396997995342,6cyclictest3380721-21kworker/u8:0+events_unbound07:20:210
3396998995246,4cyclictest3469870-21kworker/u8:1+flush-179:011:05:211
3396997995245,5cyclictest3452386-21latency_hist10:00:010
339699899500,46cyclictest0-21swapper/108:35:151
4577091490,14ptp4l61490irq/134-eno1-TxRx-007:10:003
3397004994947,1cyclictest0-21swapper/310:10:593
3396998994942,5cyclictest3499359-21kworker/u8:3+flush-179:012:40:001
3396997994943,4cyclictest3453967-21kworker/u8:3+flush-179:010:10:210
3396997994843,3cyclictest3410217-21kworker/u8:2+flush-179:008:00:250
3396998994740,5cyclictest3396993-21cyclictest10:27:001
3396998994641,4cyclictest3453967-21kworker/u8:3+flush-179:010:10:001
3396998994638,6cyclictest1213033-21systemd-journal08:35:001
3396997994641,4cyclictest3423207-21kworker/u8:0+events_unbound09:51:400
3396998994532,10cyclictest1213033-21systemd-journal09:25:161
339699899450,1cyclictest0-21swapper/111:25:121
3396997994540,4cyclictest3429572-21kworker/u8:1+flush-179:009:05:180
339699899441,41cyclictest3492958-21cron12:05:001
3397001994340,2cyclictest0-21swapper/209:08:592
3396997994237,4cyclictest3426449-21kworker/u8:2+flush-179:008:40:260
3396998994133,6cyclictest3406416-21kworker/u8:3+flush-179:008:20:161
3396998994121,18cyclictest2304-21lightdm-gtk-gre10:47:581
339700499400,38cyclictest3479979-21turbostat11:25:013
3397001994037,1cyclictest0-21swapper/210:10:002
3397001993937,1cyclictest0-21swapper/210:54:592
3396998993936,2cyclictest0-21swapper/108:05:591
4577091380,3ptp4l441ktimers/307:45:003
3397001993834,3cyclictest0-21swapper/210:10:592
339700199380,36cyclictest0-21swapper/212:11:592
339700199380,36cyclictest0-21swapper/208:20:592
3397004993733,3cyclictest0-21swapper/309:45:593
3397001993734,2cyclictest0-21swapper/211:52:592
3397001993734,2cyclictest0-21swapper/211:52:592
3397001993734,2cyclictest0-21swapper/207:35:582
3397001993733,2cyclictest0-21swapper/211:18:582
3397001993733,2cyclictest0-21swapper/209:43:592
339700199370,35cyclictest0-21swapper/212:00:592
3397004993631,3cyclictest0-21swapper/307:20:593
339700499360,35cyclictest0-21swapper/310:57:593
339700499360,35cyclictest0-21swapper/309:34:553
339700499360,35cyclictest0-21swapper/307:56:593
339700499360,1cyclictest0-21swapper/310:47:583
339700499360,1cyclictest0-21swapper/308:04:553
3397001993633,2cyclictest0-21swapper/208:56:002
3397004993533,1cyclictest0-21swapper/309:14:593
3397004993533,1cyclictest0-21swapper/309:09:593
339700499350,34cyclictest0-21swapper/311:43:593
3397001993532,2cyclictest0-21swapper/210:22:002
339700199350,1cyclictest0-21swapper/212:19:552
339700199350,1cyclictest0-21swapper/209:27:592
339700199350,1cyclictest0-21swapper/208:41:592
339700199340,32cyclictest0-21swapper/211:00:012
3397004993330,2cyclictest0-21swapper/310:19:593
3397001993330,2cyclictest0-21swapper/211:31:592
339700199330,27cyclictest0-21swapper/211:43:592
3397004993230,1cyclictest0-21swapper/308:54:003
3397004993225,5cyclictest3434381-21turbostat09:05:003
339700499320,2cyclictest0-21swapper/309:35:583
3397001993229,2cyclictest0-21swapper/209:58:592
3397001993229,2cyclictest0-21swapper/208:04:562
339700199320,27cyclictest0-21swapper/208:30:122
339699899328,5cyclictest3397118-21cat07:10:021
3397004993128,2cyclictest0-21swapper/307:33:583
3397001993126,4cyclictest0-21swapper/211:00:012
339700199310,29cyclictest0-21swapper/208:35:142
3396998993112,18cyclictest281ktimers/111:20:121
3397004993027,2cyclictest0-21swapper/312:34:003
3397004993027,2cyclictest0-21swapper/310:51:593
3397004993027,2cyclictest0-21swapper/308:25:143
339700499300,28cyclictest0-21swapper/311:10:023
3397001993027,2cyclictest0-21swapper/211:10:022
3397001993027,2cyclictest0-21swapper/209:34:562
3397001993027,2cyclictest0-21swapper/207:55:032
3397001993023,2cyclictest0-21swapper/209:15:132
339700199300,2cyclictest0-21swapper/212:20:152
4577091290,7ptp4l441ktimers/312:05:003
3397004992927,1cyclictest0-21swapper/312:25:123
3397004992926,2cyclictest0-21swapper/307:35:133
3397004992925,3cyclictest3403271-21sleep07:30:003
339700499290,28cyclictest0-21swapper/312:13:593
339700499290,27cyclictest0-21swapper/311:35:133
339700499290,27cyclictest0-21swapper/307:10:133
339700499290,1cyclictest0-21swapper/308:10:133
3397001992927,1cyclictest0-21swapper/211:25:002
3397001992926,2cyclictest0-21swapper/212:35:132
3397001992926,2cyclictest0-21swapper/211:35:132
3397001992926,2cyclictest0-21swapper/210:47:582
3397001992926,2cyclictest0-21swapper/208:10:132
3397001992925,2cyclictest0-21swapper/211:59:552
339700199290,28cyclictest0-21swapper/211:25:132
339700199290,28cyclictest0-21swapper/209:15:002
339700199290,27cyclictest0-21swapper/210:15:142
339700199290,27cyclictest0-21swapper/209:20:122
4577091280,7ptp4l61490irq/134-eno1-TxRx-011:55:013
4577091280,7ptp4l61490irq/134-eno1-TxRx-011:55:013
4577091280,6ptp4l441ktimers/311:10:013
3397004992826,1cyclictest0-21swapper/311:15:123
3397004992826,1cyclictest0-21swapper/309:55:123
3397004992825,2cyclictest0-21swapper/312:20:153
3397004992825,2cyclictest0-21swapper/309:15:013
3397004992825,2cyclictest0-21swapper/307:50:133
3397004992825,2cyclictest0-21swapper/307:15:133
339700499280,27cyclictest0-21swapper/311:00:013
339700499280,26cyclictest0-21swapper/312:35:133
339700499280,26cyclictest0-21swapper/310:20:123
339700499280,26cyclictest0-21swapper/309:25:033
339700499280,26cyclictest0-21swapper/308:40:133
339700499280,26cyclictest0-21swapper/308:30:123
339700499280,26cyclictest0-21swapper/307:40:023
3397001992825,2cyclictest0-21swapper/212:25:122
3397001992825,2cyclictest0-21swapper/207:40:022
3397001992825,2cyclictest0-21swapper/207:20:592
339700199280,2cyclictest0-21swapper/211:05:112
339700199280,2cyclictest0-21swapper/208:50:122
339700199280,26cyclictest0-21swapper/210:30:132
339700199280,26cyclictest0-21swapper/208:25:132
339700199280,26cyclictest0-21swapper/207:50:122
339700199280,26cyclictest0-21swapper/207:25:122
4577091270,6ptp4l61490irq/134-eno1-TxRx-012:00:003
4577091270,6ptp4l441ktimers/311:35:003
4577091270,6ptp4l441ktimers/311:30:013
4577091270,6ptp4l441ktimers/310:44:593
4577091270,5ptp4l441ktimers/308:10:003
3397004992725,1cyclictest0-21swapper/309:20:123
3397004992724,2cyclictest0-21swapper/310:00:593
339700499270,25cyclictest3420047-21turbostat08:20:013
339700499270,1cyclictest0-21swapper/308:35:133
4577091260,5ptp4l61490irq/134-eno1-TxRx-010:35:013
4577091260,5ptp4l61490irq/134-eno1-TxRx-009:45:013
4577091260,5ptp4l441ktimers/309:54:553
3397004992624,1cyclictest0-21swapper/312:15:593
3397004992624,1cyclictest0-21swapper/308:55:123
339700499260,24cyclictest0-21swapper/312:05:153
3397001992623,2cyclictest0-21swapper/210:04:582
3397001992623,2cyclictest0-21swapper/209:53:002
3397001992623,2cyclictest0-21swapper/209:35:592
3397001992623,2cyclictest0-21swapper/208:47:592
3397001992623,2cyclictest0-21swapper/208:47:592
3397001992623,2cyclictest0-21swapper/207:16:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-008:24:553
4577091250,4ptp4l441ktimers/310:39:553
4577091250,4ptp4l441ktimers/310:30:003
3397004992523,1cyclictest0-21swapper/308:47:593
3397004992523,1cyclictest0-21swapper/308:47:583
3397001992522,2cyclictest0-21swapper/207:48:592
3397001992522,2cyclictest0-21swapper/207:33:592
3397001992521,2cyclictest0-21swapper/209:45:592
339700199250,2cyclictest0-21swapper/210:25:142
4577091240,5ptp4l61490irq/134-eno1-TxRx-011:49:563
3397001992422,1cyclictest0-21swapper/208:19:592
3397001992421,2cyclictest0-21swapper/212:31:592
3397001992421,2cyclictest0-21swapper/212:06:592
3397001992321,1cyclictest0-21swapper/211:47:592
3397001992320,2cyclictest0-21swapper/209:01:592
3397001992017,2cyclictest0-21swapper/207:10:132
3397001991714,2cyclictest0-21swapper/208:07:592
3397001991713,2cyclictest0-21swapper/210:42:592
3397001991512,2cyclictest0-21swapper/210:37:002
33970019930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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