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2026-05-05 - 17:35
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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 May 05, 2026 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
338741599114104,8cyclictest3436225-21kworker/u8:0+events_unbound10:00:000
33874159910297,4cyclictest3416642-21kworker/u8:0+events_unbound08:40:000
33874159910293,6cyclictest1213033-21systemd-journal09:55:000
33874159910287,6cyclictest3449813-21kworker/u8:1+events_unbound10:55:010
33874159910088,6cyclictest3395775-21kworker/u8:3+events_unbound08:09:590
3387415999483,9cyclictest3483498-21kworker/u8:3+flush-179:012:40:000
3387415999480,11cyclictest1213033-21systemd-journal11:00:010
3387419999384,7cyclictest3437822-21latency_hist09:50:011
3387419999274,14cyclictest3448157-21kworker/u8:2+flush-179:011:55:011
3387415998882,4cyclictest3408621-21kworker/u8:0+events_unbound08:15:150
3387415998878,4cyclictest3427769-21kworker/u8:3+events_unbound09:35:010
3387415998777,4cyclictest3444077-21kworker/u8:0+events_unbound10:35:010
3387415998676,8cyclictest3410491-21apt-get08:20:110
3387415998579,4cyclictest3465710-21kworker/u8:3+flush-179:011:30:190
3387415998577,6cyclictest3438118-21kworker/u8:3+flush-179:010:05:000
3387419998470,8cyclictest3396035-21/usr/sbin/munin07:35:231
3387415998479,3cyclictest3444077-21kworker/u8:0+events_unbound10:25:240
3387415998375,6cyclictest3424534-21kworker/u8:0+events_unbound09:05:010
3387415998173,6cyclictest3448157-21kworker/u8:2+flush-179:011:05:210
3387415997970,7cyclictest3477095-21latency_hist12:05:010
3387415997872,4cyclictest3448157-21kworker/u8:2+events_unbound11:45:240
3387415997871,5cyclictest3448157-21kworker/u8:2+events_unbound11:20:230
3387415997871,5cyclictest3436225-21kworker/u8:0+events_unbound09:45:180
3387415997770,5cyclictest3465673-21kworker/u8:1+events_unbound11:40:020
3387415997766,8cyclictest3382778-21kworker/u8:1+events_unbound07:10:160
3387415997670,4cyclictest3403821-21kworker/u8:0+events_unbound08:00:130
3387419997568,5cyclictest3438339-21apt-get09:55:121
3387419997551,21cyclictest3395799-21latency_hist07:35:011
3387415997569,5cyclictest3448157-21kworker/u8:2+events_unbound12:05:230
3387419997364,6cyclictest1213033-21systemd-journal11:49:271
3387419997260,9cyclictest3434116-21apt-get09:34:591
3387415997267,3cyclictest3469043-21kworker/u8:0+flush-179:012:15:210
3387415997267,3cyclictest3469043-21kworker/u8:0+flush-179:012:15:210
3387415997265,5cyclictest3395771-21kworker/u8:1+flush-179:007:35:210
3387415997265,4cyclictest3444077-21kworker/u8:0+flush-179:010:35:140
3387415997263,6cyclictest3448157-21kworker/u8:2+events_unbound10:40:210
3387415997262,3cyclictest3395775-21kworker/u8:3+events_unbound07:45:010
3387419997164,5cyclictest3474155-21apt-get11:55:131
3387415997165,4cyclictest3395775-21kworker/u8:3+events_unbound07:45:140
3387419997062,6cyclictest3421364-21latency_hist08:55:011
3387415997063,5cyclictest3388942-21kworker/u8:2+events_unbound07:25:160
3387415997062,5cyclictest3454582-21kworker/u8:0+flush-179:011:25:220
3387415997062,5cyclictest3454582-21kworker/u8:0+flush-179:011:25:220
3387419996962,5cyclictest3485054-21latency_hist12:30:011
3387419996858,8cyclictest3462771-21apt-get11:20:101
3387415996862,4cyclictest3465710-21kworker/u8:3+flush-179:011:55:220
3387415996862,4cyclictest3395775-21kworker/u8:3+events_unbound07:55:230
3387419996758,6cyclictest3395775-21kworker/u8:3+flush-179:007:55:001
3387415996762,4cyclictest3438118-21kworker/u8:3+flush-179:010:15:210
3387415996758,6cyclictest3388886-21kworker/u8:0+events_unbound07:15:220
3387415996758,6cyclictest3388886-21kworker/u8:0+events_unbound07:15:210
3387415996755,11cyclictest3424534-21kworker/u8:0+flush-179:009:25:270
3387415996755,11cyclictest3424534-21kworker/u8:0+flush-179:009:25:270
3387419996658,5cyclictest3465673-21kworker/u8:1+flush-179:011:40:201
3387419996653,12cyclictest3454582-21kworker/u8:0+flush-179:011:30:011
3387419996653,12cyclictest3454582-21kworker/u8:0+flush-179:011:30:011
338741999661,64cyclictest0-21swapper/107:21:581
3387415996661,4cyclictest3405500-21kworker/u8:2+events_unbound08:25:240
3387415996660,4cyclictest3438118-21kworker/u8:3+events_unbound10:20:220
3387415996655,3cyclictest3448157-21kworker/u8:2+events_unbound11:35:180
3387415996561,3cyclictest3424534-21kworker/u8:0+flush-179:009:15:230
3387415996556,6cyclictest3405488-21kworker/u8:1+events_unbound08:45:190
3387415996555,8cyclictest3424534-21kworker/u8:0+flush-179:009:10:230
3387415996555,8cyclictest3394392-21cat07:30:000
3387420996461,2cyclictest0-21swapper/212:37:002
3387415996454,8cyclictest3440210-21apt-get10:05:130
338742499630,61cyclictest0-21swapper/307:21:593
3387419996358,4cyclictest3465710-21kworker/u8:3+flush-179:011:30:231
3387415996258,3cyclictest3435936-21kworker/u8:1+events_unbound09:44:550
3387415996258,3cyclictest3427769-21kworker/u8:3+flush-179:009:35:210
3387415996249,4cyclictest3422302-21kworker/u8:2+events_unbound09:05:160
3387415996154,5cyclictest3454582-21kworker/u8:0+events_unbound11:10:200
3387415996150,4cyclictest3448157-21kworker/u8:2+flush-179:010:45:200
3387419996053,5cyclictest3441801-21latency_hist10:15:011
3387419995955,2cyclictest0-21swapper/111:19:591
3387419995950,7cyclictest3436237-21latency_hist09:45:021
3387415995955,3cyclictest3465710-21kworker/u8:3+flush-179:011:50:210
3387415995752,4cyclictest3395775-21kworker/u8:3+flush-179:008:10:220
3387424995653,2cyclictest0-21swapper/311:19:593
3387419995545,8cyclictest3424534-21kworker/u8:0+flush-179:009:10:221
3387415995550,4cyclictest3405500-21kworker/u8:2+flush-179:008:40:140
3387419995448,4cyclictest3448157-21kworker/u8:2+flush-179:011:35:241
3387419995446,6cyclictest3451400-21kworker/u8:3+flush-179:010:45:001
338741999540,37cyclictest0-21swapper/111:02:591
3387415995450,3cyclictest3420014-21kworker/u8:0+flush-179:008:50:150
3387415995449,4cyclictest3427769-21kworker/u8:3+flush-179:009:20:240
3387415995444,8cyclictest3413666-21apt-get08:30:120
3387419995346,5cyclictest3405500-21kworker/u8:2+events_unbound08:25:161
3387419995335,16cyclictest714-21Xorg10:59:591
3387419995330,20cyclictest3399083-21latency_hist07:45:001
3387415995347,4cyclictest3449813-21kworker/u8:1+events_unbound11:00:210
3387415995346,6cyclictest3469043-21kworker/u8:0+events_unbound12:25:260
338742499520,40cyclictest3467287-21turbostat11:35:003
3387415995248,3cyclictest3400906-21kworker/u8:1+flush-179:007:50:210
3387415995247,4cyclictest3469043-21kworker/u8:0+flush-179:012:10:190
3387415995246,4cyclictest3481840-21kworker/u8:1+flush-179:012:30:210
3387419995141,7cyclictest3481840-21kworker/u8:1+flush-179:012:20:251
4577091500,13ptp4l441ktimers/307:10:013
3387419995040,7cyclictest3478714-21systemd12:10:011
3387419995021,27cyclictest0-21swapper/108:40:001
3387419994946,2cyclictest3438118-21kworker/u8:3+events_unbound10:25:001
3387419994943,4cyclictest3469043-21kworker/u8:0+flush-179:012:00:151
3387419994938,8cyclictest3405500-21kworker/u8:2+flush-179:008:40:231
3387419994927,5cyclictest1213033-21systemd-journal12:36:351
3387415994943,4cyclictest3422956-21latency_hist09:00:020
3387415994943,4cyclictest3422956-21latency_hist09:00:010
3387419994841,5cyclictest3424534-21kworker/u8:0+flush-179:009:24:551
3387419994821,11cyclictest0-21swapper/112:30:121
3387419994740,5cyclictest3454582-21kworker/u8:0+flush-179:011:10:161
3387415994743,3cyclictest3481840-21kworker/u8:1+flush-179:012:20:220
3387415994742,4cyclictest3454582-21kworker/u8:0+flush-179:011:15:190
3387419994638,6cyclictest3449813-21kworker/u8:1+flush-179:010:45:151
3387419994337,5cyclictest484-21dbus-daemon09:05:001
3387419994337,4cyclictest3422302-21kworker/u8:2+flush-179:009:05:201
338741999432,39cyclictest3418195-21turbostat08:49:551
338742099420,2cyclictest0-21swapper/209:25:592
338742099420,2cyclictest0-21swapper/209:25:592
3387419994239,2cyclictest3382827-21kworker/u8:3+events_unbound07:10:021
3387419994234,5cyclictest0-21swapper/107:57:591
3387419994232,8cyclictest1213033-21systemd-journal07:20:011
3387419994232,8cyclictest1213033-21systemd-journal07:20:011
3387419994220,4cyclictest0-21swapper/109:25:181
3387419994220,4cyclictest0-21swapper/109:25:181
3387420994138,2cyclictest0-21swapper/211:23:592
3387419994135,4cyclictest3403821-21kworker/u8:0+flush-179:008:00:171
3387419994132,7cyclictest3382778-21kworker/u8:1+flush-179:007:10:191
3387420994038,1cyclictest0-21swapper/210:25:002
3387419994037,2cyclictest0-21swapper/108:22:591
3387419994033,6cyclictest3444077-21kworker/u8:0+flush-179:010:25:221
3387419994031,6cyclictest0-21swapper/108:15:591
3387419994030,8cyclictest3399340-21apt-get07:45:121
338741999401,2cyclictest714-21Xorg10:50:591
338741999401,2cyclictest714-21Xorg07:26:591
3387424993937,1cyclictest0-21swapper/307:44:563
3387424993930,1cyclictest0-21swapper/307:31:593
338742499390,38cyclictest0-21swapper/311:02:593
3387419993934,4cyclictest3469043-21kworker/u8:0+flush-179:012:14:561
3387419993933,4cyclictest3481869-21latency_hist12:20:021
3387419993933,4cyclictest3481869-21latency_hist12:20:011
3387419993933,4cyclictest3438118-21kworker/u8:3+events_unbound10:30:251
3387419993928,9cyclictest3405711-21apt-get08:05:131
338741999390,37cyclictest714-21Xorg11:06:591
338741999390,37cyclictest0-21swapper/109:39:591
3387424993835,2cyclictest0-21swapper/308:22:583
3387424993833,4cyclictest0-21swapper/310:59:593
3387420993831,6cyclictest0-21swapper/208:33:582
338742099380,36cyclictest0-21swapper/212:32:592
338742099380,36cyclictest0-21swapper/208:54:002
338742099380,35cyclictest0-21swapper/209:13:592
3387415993830,7cyclictest3382827-21kworker/u8:3+events_unbound07:20:130
338741599380,2cyclictest0-21swapper/010:12:580
3387420993733,2cyclictest0-21swapper/207:21:592
338742099370,35cyclictest0-21swapper/212:16:592
338742099370,35cyclictest0-21swapper/212:16:592
3387419993734,2cyclictest0-21swapper/109:54:591
3387419993733,3cyclictest714-21Xorg10:17:001
3387419993731,5cyclictest3444077-21kworker/u8:0+flush-179:010:35:131
3387424993634,1cyclictest0-21swapper/311:49:553
3387424993634,1cyclictest0-21swapper/308:29:593
338742499360,35cyclictest0-21swapper/309:39:593
338742499360,35cyclictest0-21swapper/309:14:553
3387420993633,2cyclictest0-21swapper/212:11:582
338742099360,1cyclictest0-21swapper/208:06:592
3387419993633,2cyclictest714-21Xorg10:06:591
3387419993630,4cyclictest3408514-21unixbench_multi08:10:261
3387419993628,6cyclictest3424534-21kworker/u8:0+flush-179:009:20:001
338742499350,1cyclictest0-21swapper/311:06:593
3387424993432,1cyclictest0-21swapper/311:25:593
3387424993432,1cyclictest0-21swapper/311:25:593
3387424993432,1cyclictest0-21swapper/309:34:003
3387424993432,1cyclictest0-21swapper/307:14:553
3387424993431,2cyclictest0-21swapper/310:07:003
3387420993432,1cyclictest0-21swapper/210:34:592
3387420993432,1cyclictest0-21swapper/210:25:592
3387424993331,1cyclictest0-21swapper/310:16:593
3387424993331,1cyclictest0-21swapper/309:54:593
3387424993330,2cyclictest0-21swapper/311:54:593
3387420993330,2cyclictest0-21swapper/207:47:002
3387420993327,5cyclictest0-21swapper/208:55:142
3387420993327,5cyclictest0-21swapper/208:55:132
3387419993328,3cyclictest0-21swapper/110:05:001
3387424993230,1cyclictest0-21swapper/312:21:593
3387424993230,1cyclictest0-21swapper/307:29:553
338742499320,29cyclictest0-21swapper/308:00:123
3387420993229,2cyclictest0-21swapper/211:43:592
3387420993225,6cyclictest0-21swapper/207:30:132
3387419993227,4cyclictest3405488-21kworker/u8:1+flush-179:008:55:271
3387419993227,4cyclictest3405488-21kworker/u8:1+flush-179:008:55:271
3387424993129,1cyclictest0-21swapper/310:10:593
3387424993124,5cyclictest3445005-21turbostat10:25:003
338742499310,27cyclictest0-21swapper/312:10:133
338742499310,27cyclictest0-21swapper/307:50:133
4577091300,6ptp4l441ktimers/310:05:003
3387424993028,1cyclictest0-21swapper/308:45:593
338742499300,27cyclictest0-21swapper/312:30:133
338742499300,27cyclictest0-21swapper/311:10:123
338742499300,27cyclictest0-21swapper/310:35:123
3387420993027,2cyclictest0-21swapper/210:05:142
3387420993027,2cyclictest0-21swapper/209:05:142
3387420993027,2cyclictest0-21swapper/208:47:582
4577091290,7ptp4l441ktimers/312:00:003
4577091290,6ptp4l61490irq/134-eno1-TxRx-011:25:013
4577091290,6ptp4l441ktimers/309:45:003
4577091290,6ptp4l441ktimers/307:49:593
338742499290,28cyclictest0-21swapper/309:24:593
338742499290,28cyclictest0-21swapper/308:08:583
338742499290,1cyclictest0-21swapper/311:35:113
3387420992927,1cyclictest0-21swapper/210:49:592
3387420992927,1cyclictest0-21swapper/209:25:012
3387420992926,2cyclictest0-21swapper/210:51:592
338742099290,27cyclictest0-21swapper/207:55:162
338742099290,27cyclictest0-21swapper/207:25:152
338742099290,26cyclictest0-21swapper/208:44:542
4577091280,7ptp4l61490irq/134-eno1-TxRx-010:00:003
4577091280,7ptp4l61490irq/134-eno1-TxRx-007:40:013
4577091280,7ptp4l441ktimers/312:20:013
4577091280,7ptp4l441ktimers/312:20:013
4577091280,6ptp4l441ktimers/311:45:013
4577091280,6ptp4l441ktimers/309:20:013
4577091280,6ptp4l441ktimers/307:20:013
4577091280,6ptp4l441ktimers/307:20:003
4577091280,5ptp4l441ktimers/312:04:553
3387424992826,1cyclictest0-21swapper/309:09:543
3387424992826,1cyclictest0-21swapper/308:58:593
3387424992826,1cyclictest0-21swapper/308:58:593
3387424992825,2cyclictest0-21swapper/309:49:003
3387420992826,1cyclictest0-21swapper/208:12:592
3387420992825,2cyclictest0-21swapper/211:50:132
3387420992825,2cyclictest0-21swapper/209:55:592
3387420992825,2cyclictest0-21swapper/209:40:592
3387420992825,2cyclictest0-21swapper/209:39:552
3387420992825,2cyclictest0-21swapper/208:18:592
3387420992821,6cyclictest0-21swapper/210:00:592
338742099280,2cyclictest0-21swapper/211:15:122
338742099280,26cyclictest0-21swapper/209:48:592
3387419992822,5cyclictest3413420-21turbostat08:34:551
4577091270,6ptp4l61490irq/134-eno1-TxRx-009:29:593
4577091270,6ptp4l61490irq/134-eno1-TxRx-009:29:593
4577091270,6ptp4l61490irq/134-eno1-TxRx-008:15:003
4577091270,6ptp4l441ktimers/310:55:013
4577091270,5ptp4l61490irq/134-eno1-TxRx-008:44:553
4577091270,5ptp4l441ktimers/310:49:563
4577091270,5ptp4l441ktimers/310:30:003
4577091270,5ptp4l441ktimers/308:54:563
4577091270,5ptp4l441ktimers/308:34:573
3387424992725,1cyclictest0-21swapper/312:35:593
338742499270,21cyclictest0-21swapper/308:35:583
3387420992725,1cyclictest0-21swapper/210:44:592
3387420992724,2cyclictest0-21swapper/212:03:592
3387420992724,2cyclictest0-21swapper/209:15:582
3387420992724,2cyclictest0-21swapper/208:25:592
3387420992720,6cyclictest0-21swapper/207:12:592
338742099270,26cyclictest0-21swapper/210:35:122
338742099270,26cyclictest0-21swapper/209:50:592
338742099270,25cyclictest0-21swapper/211:05:142
338742099270,25cyclictest0-21swapper/209:00:582
338742099270,1cyclictest0-21swapper/208:35:122
4577091260,5ptp4l441ktimers/312:29:553
4577091260,5ptp4l441ktimers/307:59:553
4577091260,4ptp4l61490irq/134-eno1-TxRx-009:04:563
3387420992623,2cyclictest0-21swapper/211:10:122
338742099260,2cyclictest0-21swapper/211:56:592
338742099260,24cyclictest0-21swapper/212:23:592
338742099260,24cyclictest0-21swapper/212:09:552
4577091250,4ptp4l61490irq/134-eno1-TxRx-012:09:543
4577091250,4ptp4l61490irq/134-eno1-TxRx-010:44:563
3387424992523,1cyclictest0-21swapper/310:31:593
3387420992523,1cyclictest0-21swapper/211:50:002
3387420992523,1cyclictest0-21swapper/208:20:592
338742099250,2cyclictest0-21swapper/208:01:592
338742099250,2cyclictest0-21swapper/207:42:002
3387420992422,1cyclictest0-21swapper/211:05:002
3387420992421,2cyclictest0-21swapper/210:56:592
3387420992421,2cyclictest0-21swapper/210:15:002
3387420992421,2cyclictest0-21swapper/207:17:002
3387420992421,2cyclictest0-21swapper/207:16:592
3387424992321,1cyclictest0-21swapper/308:16:003
3387420992320,2cyclictest0-21swapper/207:51:582
3387420992320,2cyclictest0-21swapper/207:36:582
3387420992220,1cyclictest0-21swapper/211:30:592
3387420992219,2cyclictest0-21swapper/211:25:142
3387420992219,2cyclictest0-21swapper/211:25:142
3387420992018,1cyclictest0-21swapper/209:31:582
3387420992017,2cyclictest0-21swapper/212:27:582
3387420991815,2cyclictest0-21swapper/210:19:552
338741599141,11cyclictest3387411-21cyclictest07:10:020
338742099130,10cyclictest0-21swapper/211:39:592
33874209960,5cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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