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2026-03-10 - 20:28
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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 Tue Mar 10, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3580835999585,7cyclictest3662942-21latency_hist11:25:010
3580835999382,4cyclictest3675205-21kworker/u8:0+events_unbound12:10:230
3580835998883,4cyclictest3650249-21kworker/u8:3+events_unbound10:50:230
3580835998883,4cyclictest3596892-21kworker/u8:1+events_unbound08:20:230
3580839998780,5cyclictest3596967-21kworker/u8:2+flush-179:009:05:241
3580839998676,7cyclictest3612868-21kworker/u8:1+flush-179:008:55:241
3580835998575,4cyclictest3580752-21kworker/u8:3+events_unbound07:25:260
3580839998472,8cyclictest3622649-21apt-get09:20:001
3580835998374,7cyclictest266-21systemd-journal08:50:000
3580839998273,7cyclictest3680449-21apt-get12:20:041
3580835998276,4cyclictest3669547-21kworker/u8:2+events_unbound11:50:200
3580839998069,7cyclictest3603333-21kworker/u8:0+flush-179:008:40:201
3580835998075,4cyclictest3624489-21kworker/u8:0+events_unbound09:45:180
3580835998072,3cyclictest3580752-21kworker/u8:3+events_unbound07:30:240
3580839997764,12cyclictest3596967-21kworker/u8:2+events_unbound09:05:011
3580835997773,3cyclictest3669547-21kworker/u8:2+flush-179:011:59:550
3580835997772,4cyclictest3684174-21kworker/u8:3+events_unbound12:35:190
3580835997769,5cyclictest3626117-21kworker/u8:2+events_unbound09:30:230
3580839997670,4cyclictest3675205-21kworker/u8:0+flush-179:012:15:251
3580835997671,4cyclictest3632491-21kworker/u8:2+events_unbound10:45:220
3580835997571,3cyclictest3632491-21kworker/u8:2+events_unbound09:55:150
3580839997459,14cyclictest3624489-21kworker/u8:0+flush-179:009:25:261
3580835997461,10cyclictest3641985-21apt-get10:19:590
3580839997365,6cyclictest3590598-21kworker/u8:1+flush-179:007:45:221
3580835997369,3cyclictest3624489-21kworker/u8:0+events_unbound09:40:240
3580839997265,4cyclictest3632491-21kworker/u8:2+events_unbound10:40:171
3580835997268,3cyclictest3632491-21kworker/u8:2+flush-179:010:14:560
3580839997163,5cyclictest3624489-21kworker/u8:0+flush-179:010:00:251
3580839997058,9cyclictest3650249-21kworker/u8:3+flush-179:011:30:201
3580835997066,3cyclictest3585559-21kworker/u8:0+events_unbound08:00:160
3580835997065,4cyclictest3645417-21kworker/u8:0+events_unbound10:30:180
3580839996960,6cyclictest3663979-21kworker/u8:0+flush-179:011:35:221
3580839996958,9cyclictest3632491-21kworker/u8:2+flush-179:009:55:201
3580835996964,4cyclictest3677253-21kworker/u8:1+events_unbound12:20:140
3580835996960,7cyclictest3648867-21/usr/sbin/munin10:40:230
3580835996958,8cyclictest266-21systemd-journal11:45:000
3580839996759,5cyclictest3596967-21kworker/u8:2+flush-179:008:25:171
3580835996656,7cyclictest3595325-21latency_hist07:55:010
3580835996655,4cyclictest3612868-21kworker/u8:1+events_unbound09:15:240
3580839996555,8cyclictest3585521-21apt-get07:25:041
3580839996456,5cyclictest3661612-21apt-get11:20:131
3580835996359,3cyclictest3596967-21kworker/u8:2+flush-179:008:29:560
3580835996355,6cyclictest3645435-21latency_hist10:30:010
3580839996254,5cyclictest3650249-21kworker/u8:3+events_unbound11:15:001
3580835996257,4cyclictest3596892-21kworker/u8:1+events_unbound08:30:240
3580835996257,4cyclictest3588930-21kworker/u8:2+events_unbound07:37:190
3580835996253,7cyclictest3654991-21latency_hist11:00:020
3580839996154,5cyclictest3596967-21kworker/u8:2+events_unbound08:05:011
3580839996153,5cyclictest3640440-21kworker/u8:3+flush-179:010:15:191
3580835996157,3cyclictest3596967-21kworker/u8:2+flush-179:008:50:270
3580835996055,4cyclictest3561909-21kworker/u8:2+events_unbound07:22:220
3580839995957,2cyclictest0-21swapper/108:20:581
3580835995954,4cyclictest3596967-21kworker/u8:2+events_unbound09:05:150
3580835995953,5cyclictest3617651-21kworker/u8:0+events_unbound09:10:130
3580839995851,5cyclictest266-21systemd-journal07:43:391
3580835995854,3cyclictest3675205-21kworker/u8:0+events_unbound12:15:250
3580835995854,3cyclictest3650249-21kworker/u8:3+events_unbound11:08:200
3580835995853,4cyclictest3621078-21kworker/u8:3+events_unbound09:50:240
3580835995853,4cyclictest3612868-21kworker/u8:1+events_unbound09:22:190
3580839995752,3cyclictest3669547-21kworker/u8:2+flush-179:012:30:241
3580839995747,7cyclictest3632491-21kworker/u8:2+flush-179:010:50:201
3580835995752,4cyclictest3647267-21kworker/u8:1+events_unbound10:38:190
3580835995752,4cyclictest3647267-21kworker/u8:1+events_unbound10:38:190
3580835995752,4cyclictest3624489-21kworker/u8:0+flush-179:009:26:200
3580835995749,6cyclictest3669547-21kworker/u8:2+flush-179:011:50:010
3580839995642,12cyclictest3645417-21kworker/u8:0+flush-179:010:30:261
3580835995647,3cyclictest3669547-21kworker/u8:2+events_unbound12:05:190
3580839995449,4cyclictest3632491-21kworker/u8:2+flush-179:010:35:211
3580839995449,4cyclictest3632491-21kworker/u8:2+flush-179:010:35:211
3580839995447,5cyclictest3588930-21kworker/u8:2+flush-179:007:35:171
3580839995446,6cyclictest3624489-21kworker/u8:0+flush-179:009:25:001
3580835995450,3cyclictest3626117-21kworker/u8:2+events_unbound09:35:250
3580835995450,3cyclictest3596892-21kworker/u8:1+events_unbound08:16:190
3580835995450,3cyclictest3579198-21kworker/u8:0+events_unbound07:11:210
3580839995350,2cyclictest3580752-21kworker/u8:3+events_unbound07:20:201
3580839995344,6cyclictest3669547-21kworker/u8:2+flush-179:011:55:201
3580839995344,6cyclictest3634031-21latency_hist09:55:001
3580835995348,4cyclictest3650249-21kworker/u8:3+events_unbound11:04:140
3580835995348,4cyclictest3650249-21kworker/u8:3+events_unbound11:04:130
3580844995249,2cyclictest0-21swapper/309:46:593
3580839995245,5cyclictest3650249-21kworker/u8:3+flush-179:011:00:011
3580839995244,6cyclictest3638811-21latency_hist10:10:011
3580835995247,4cyclictest3596967-21kworker/u8:2+events_unbound08:58:200
3580839995145,4cyclictest3682810-21apt-get12:25:101
3580839995144,4cyclictest3663979-21kworker/u8:0+flush-179:011:40:201
3580835995147,3cyclictest3650194-21kworker/u8:0+events_unbound11:10:030
3580835995147,3cyclictest3612868-21kworker/u8:1+events_unbound09:01:020
3580835995146,4cyclictest3596967-21kworker/u8:2+events_unbound08:13:440
3580835995046,3cyclictest3590598-21kworker/u8:1+events_unbound07:46:200
3580835995045,4cyclictest3669547-21kworker/u8:2+events_unbound12:00:170
3580839994944,3cyclictest3632491-21kworker/u8:2+events_unbound10:10:181
4577091480,12ptp4l441ktimers/307:09:563
3580839994845,2cyclictest3650194-21kworker/u8:0+events_unbound11:05:201
3580839994742,4cyclictest3632491-21kworker/u8:2+flush-179:010:24:101
3580839994738,7cyclictest3606504-21kworker/u8:4+flush-179:008:45:211
3580835994744,3cyclictest3585559-21kworker/u8:0+events_unbound07:58:190
3580835994743,3cyclictest3606504-21kworker/u8:4+events_unbound08:35:270
3580839994640,5cyclictest3626117-21kworker/u8:2+flush-179:009:30:201
3580839994637,7cyclictest3612868-21kworker/u8:1+flush-179:008:50:211
3580835994642,3cyclictest3650249-21kworker/u8:3+events_unbound11:15:030
3580835994641,4cyclictest3596892-21kworker/u8:1+events_unbound08:05:030
358084499452,41cyclictest0-21swapper/310:15:003
358084099452,1cyclictest0-21swapper/210:15:002
3580835994537,7cyclictest266-21systemd-journal10:10:000
3580839994431,11cyclictest266-21systemd-journal12:15:001
3580835994442,1cyclictest191rcuc/011:30:590
3580839994338,4cyclictest3650194-21kworker/u8:0+flush-179:011:05:011
3580839994338,4cyclictest3650194-21kworker/u8:0+flush-179:011:05:001
3580839994337,5cyclictest3580752-21kworker/u8:3+events_unbound07:10:241
3580839994336,5cyclictest3632491-21kworker/u8:2+events_unbound10:25:151
3580839994336,5cyclictest3606504-21kworker/u8:4+events_unbound08:35:151
3580839994335,7cyclictest3660003-21apt-get11:15:101
3580835994338,4cyclictest3624489-21kworker/u8:0+events_unbound10:00:070
3580835994335,3cyclictest3632491-21kworker/u8:2+events_unbound10:20:170
358084499420,40cyclictest3667720-21turbostat11:39:593
3580835994237,4cyclictest3580752-21kworker/u8:3+events_unbound07:15:180
3580839994136,4cyclictest3632491-21kworker/u8:2+flush-179:010:45:241
3580844994037,2cyclictest0-21swapper/308:28:003
358084499400,38cyclictest3661353-21turbostat11:20:003
3580840994037,2cyclictest0-21swapper/208:27:592
3580839994037,2cyclictest3624489-21kworker/u8:0+events_unbound09:45:221
3580839994034,5cyclictest3612868-21kworker/u8:1+flush-179:009:15:001
3580839994033,5cyclictest3624489-21kworker/u8:0+flush-179:009:40:211
358083999401,35cyclictest3593996-21apt-get07:50:121
3580835994036,3cyclictest3669547-21kworker/u8:2+events_unbound12:31:190
3580835994036,3cyclictest3590598-21kworker/u8:1+events_unbound07:40:020
3580835994035,3cyclictest3664568-21systemd-run11:30:010
3580844993932,5cyclictest3629274-21turbostat09:40:003
358084499390,4cyclictest3619206-21turbostat09:10:003
358084499390,38cyclictest0-21swapper/311:26:003
3580840993936,2cyclictest0-21swapper/211:30:592
358084099390,36cyclictest0-21swapper/211:20:002
358084099390,36cyclictest0-21swapper/210:54:542
358084099390,36cyclictest0-21swapper/208:12:002
358084099390,35cyclictest0-21swapper/208:09:552
3580839993934,4cyclictest3580752-21kworker/u8:3+flush-179:007:30:171
358083999390,38cyclictest3595335-21turbostat07:59:551
3580835993935,2cyclictest3611286-21systemd-run08:45:020
3580844993835,2cyclictest0-21swapper/311:30:593
3580844993835,2cyclictest0-21swapper/308:06:593
3580840993834,2cyclictest0-21swapper/212:36:592
3580840993833,2cyclictest0-21swapper/207:29:552
358084099380,36cyclictest0-21swapper/211:25:592
3580839993834,3cyclictest3669547-21kworker/u8:2+flush-179:012:05:221
3580835993831,5cyclictest3684137-21cron12:30:000
3580840993734,2cyclictest0-21swapper/209:46:002
3580840993732,3cyclictest0-21swapper/210:41:002
3580839993731,5cyclictest3561909-21kworker/u8:2+events_unbound07:15:241
3580844993633,2cyclictest0-21swapper/312:36:593
358084499360,35cyclictest0-21swapper/310:54:553
3580840993633,2cyclictest0-21swapper/209:40:002
3580840993633,2cyclictest0-21swapper/207:21:582
3580840993632,2cyclictest0-21swapper/211:39:552
3580839993630,5cyclictest3596892-21kworker/u8:1+events_unbound08:30:221
3580839993629,6cyclictest3596967-21kworker/u8:2+flush-179:008:05:261
3580844993533,1cyclictest0-21swapper/307:29:553
3580844993533,1cyclictest0-21swapper/307:21:583
3580844993532,1cyclictest0-21swapper/310:41:003
358084499350,34cyclictest0-21swapper/308:11:593
3580840993531,3cyclictest0-21swapper/209:51:592
3580840993530,3cyclictest0-21swapper/207:42:592
3580839993531,3cyclictest3669547-21kworker/u8:2+flush-179:011:45:171
3580839993530,4cyclictest3601735-21latency_hist08:15:011
3580839993530,3cyclictest3650249-21kworker/u8:3+flush-179:011:25:251
3580839993528,6cyclictest3596967-21kworker/u8:2+events_unbound08:15:191
3580835993531,3cyclictest3666097-21kworker/u8:2+events_unbound11:35:020
3580844993432,1cyclictest0-21swapper/310:02:593
3580844993431,2cyclictest0-21swapper/309:51:593
3580844993430,2cyclictest0-21swapper/308:21:593
3580840993431,2cyclictest0-21swapper/210:02:592
3580840993430,2cyclictest0-21swapper/208:21:592
3580840993430,2cyclictest0-21swapper/207:53:592
3580844993330,2cyclictest0-21swapper/307:54:003
3580844993329,3cyclictest0-21swapper/308:04:583
3580839993327,4cyclictest3669547-21kworker/u8:2+flush-179:012:40:011
358084499324,21cyclictest0-21swapper/312:20:033
3580840993229,2cyclictest0-21swapper/212:20:022
3580840993229,2cyclictest0-21swapper/208:04:582
3580840993228,2cyclictest0-21swapper/209:22:592
3580839993228,3cyclictest3674779-21hwlatdetect12:00:161
3580844993129,1cyclictest0-21swapper/312:05:143
3580844993129,1cyclictest0-21swapper/307:42:593
3580844993128,2cyclictest0-21swapper/309:23:003
358084499310,28cyclictest0-21swapper/311:50:133
3580840993128,2cyclictest0-21swapper/210:35:132
3580840993128,2cyclictest0-21swapper/210:35:122
3580840993128,2cyclictest0-21swapper/210:09:552
358084099312,2cyclictest0-21swapper/212:05:132
358084099310,29cyclictest0-21swapper/212:00:122
358084099310,29cyclictest0-21swapper/211:00:132
358084099310,29cyclictest0-21swapper/211:00:132
3580839993127,3cyclictest0-21swapper/109:40:001
3580844993028,1cyclictest0-21swapper/310:27:003
3580844993028,1cyclictest0-21swapper/310:09:553
3580844993027,2cyclictest0-21swapper/312:15:133
358084499302,27cyclictest0-21swapper/310:35:133
358084499302,27cyclictest0-21swapper/310:35:123
358084499300,28cyclictest0-21swapper/311:00:133
358084499300,28cyclictest0-21swapper/311:00:123
358084499300,28cyclictest0-21swapper/309:10:013
358084499300,28cyclictest0-21swapper/309:00:133
358084499300,28cyclictest0-21swapper/308:55:133
358084499300,28cyclictest0-21swapper/307:46:003
3580840993027,2cyclictest0-21swapper/212:26:592
3580840993027,2cyclictest0-21swapper/211:20:152
3580840993027,2cyclictest0-21swapper/210:27:002
3580840993027,2cyclictest0-21swapper/209:25:132
358084099300,27cyclictest0-21swapper/212:15:142
358084099300,27cyclictest0-21swapper/207:45:132
4577091290,7ptp4l61490irq/134-eno1-TxRx-011:00:013
3580844992927,1cyclictest0-21swapper/312:26:593
3580844992927,1cyclictest0-21swapper/309:25:133
3580844992926,2cyclictest0-21swapper/311:20:143
3580844992926,2cyclictest0-21swapper/308:15:123
358084499290,28cyclictest0-21swapper/308:35:143
358084499290,28cyclictest0-21swapper/307:55:133
358084499290,28cyclictest0-21swapper/307:10:133
3580840992926,2cyclictest0-21swapper/211:50:132
3580840992924,3cyclictest0-21swapper/208:35:142
358084099290,27cyclictest0-21swapper/209:10:012
358084099290,27cyclictest0-21swapper/208:46:592
358084099290,27cyclictest0-21swapper/207:55:142
358084099290,27cyclictest0-21swapper/207:30:592
358084099290,27cyclictest0-21swapper/207:10:122
4577091280,7ptp4l441ktimers/310:19:593
4577091280,6ptp4l61490irq/134-eno1-TxRx-010:50:003
4577091280,6ptp4l441ktimers/311:15:003
4577091280,6ptp4l441ktimers/311:10:003
4577091280,6ptp4l441ktimers/308:45:013
4577091280,6ptp4l441ktimers/307:34:563
4577091280,6ptp4l441ktimers/307:20:013
4577091280,5ptp4l441ktimers/308:55:003
3580844992826,1cyclictest0-21swapper/311:55:103
3580844992825,2cyclictest0-21swapper/312:30:123
358084499280,2cyclictest0-21swapper/310:34:593
358084499280,26cyclictest0-21swapper/312:00:123
358084499280,26cyclictest0-21swapper/310:20:593
3580840992825,2cyclictest0-21swapper/212:30:132
3580840992825,2cyclictest0-21swapper/211:55:112
3580840992825,2cyclictest0-21swapper/208:15:122
358084099280,27cyclictest0-21swapper/209:00:122
358084099280,26cyclictest0-21swapper/208:55:132
4577091270,7ptp4l61490irq/134-eno1-TxRx-011:50:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-010:00:003
4577091270,6ptp4l441ktimers/312:14:553
358084499270,1cyclictest0-21swapper/311:41:593
358084499270,1cyclictest0-21swapper/308:46:593
3580840992724,2cyclictest0-21swapper/210:24:582
3580840992723,2cyclictest0-21swapper/212:14:562
3580840992723,2cyclictest0-21swapper/207:19:552
358083999278,18cyclictest0-21swapper/111:50:201
3580839992721,4cyclictest3580752-21kworker/u8:3+events_unbound07:10:031
4577091260,6ptp4l441ktimers/309:19:553
4577091260,5ptp4l61490irq/134-eno1-TxRx-009:45:003
3580840992623,2cyclictest0-21swapper/208:53:592
358084099260,2cyclictest0-21swapper/210:34:592
4577091250,4ptp4l441ktimers/308:34:553
3580840992522,2cyclictest0-21swapper/211:13:592
3580840992522,2cyclictest0-21swapper/210:49:592
3580840992521,2cyclictest0-21swapper/208:42:592
358084099250,2cyclictest0-21swapper/211:41:592
231999250,15rtkit-daemon524-21gmain07:05:120
4577091240,4ptp4l441ktimers/309:34:563
4577091240,4ptp4l441ktimers/307:39:553
3580840992421,2cyclictest0-21swapper/210:56:002
3580840992421,2cyclictest0-21swapper/209:33:592
3580840992421,2cyclictest0-21swapper/209:06:592
3580840992219,2cyclictest0-21swapper/209:55:122
3580840991916,2cyclictest0-21swapper/207:35:592
3580840991814,2cyclictest0-21swapper/210:15:592
3580840991714,2cyclictest0-21swapper/211:05:122
3580840991713,2cyclictest0-21swapper/208:32:002
3580840991613,2cyclictest0-21swapper/209:43:592
3580840991411,2cyclictest0-21swapper/211:45:582
3580840991411,2cyclictest0-21swapper/209:16:592
35808409963,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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