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2026-06-18 - 01:20
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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 Wed Jun 17, 2026 12:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
390472299122112,8cyclictest3970790-21kworker/u8:0+events_unbound10:50:031
390472299121110,8cyclictest510-21rs:main1
390471799119108,8cyclictest3956492-21latency_hist09:50:010
390471799119108,8cyclictest3956492-21latency_hist09:50:000
390472299116103,10cyclictest3937030-21cat08:50:011
390471799112102,7cyclictest3909543-21latency_hist07:25:010
390472299110103,4cyclictest3991864-21kworker/u8:0+flush-179:012:30:221
390471799110100,6cyclictest3931843-21latency_hist08:35:000
39047229910795,9cyclictest1213033-21systemd-journal07:45:011
39047179910493,8cyclictest3948575-21kworker/u8:0+flush-179:009:40:000
39047229910279,21cyclictest3912717-21latency_hist07:35:011
39047229910090,7cyclictest3948575-21kworker/u8:0+flush-179:009:35:231
3904722999887,8cyclictest3937012-21kworker/u8:3+flush-179:008:55:191
3904722999574,19cyclictest510-21rs:main1
3904722999486,5cyclictest3991864-21kworker/u8:0+flush-179:012:20:201
3904722999282,8cyclictest1213033-21systemd-journal10:05:001
3904717999182,7cyclictest3946717-21apt-get09:20:030
3904717999182,7cyclictest3946717-21apt-get09:20:030
3904722999084,4cyclictest3991864-21kworker/u8:0+flush-179:012:00:171
3904722999084,4cyclictest3970795-21kworker/u8:1+flush-179:010:45:211
3904722998979,7cyclictest3962844-21kworker/u8:2+flush-179:010:30:211
3904717998979,7cyclictest4009319-21latency_hist12:35:010
3904722998881,5cyclictest3937012-21kworker/u8:3+flush-179:009:15:141
3904722998881,5cyclictest3937012-21kworker/u8:3+flush-179:009:15:131
3904717998875,10cyclictest1213033-21systemd-journal11:35:000
3904717998875,10cyclictest1213033-21systemd-journal11:35:000
3904722998780,5cyclictest3917759-21kworker/u8:0+flush-179:008:30:251
3904730998656,29cyclictest0-21swapper/310:07:593
3904722998677,6cyclictest3914381-21kworker/u8:3+flush-179:007:55:231
3904722998659,9cyclictest3980937-21apt-get11:05:121
3904722998579,4cyclictest3910321-21kworker/u8:1+flush-179:007:35:231
3904722998575,7cyclictest3985453-21latency_hist11:20:011
3904717998576,6cyclictest3991812-21latency_hist11:40:000
3904722998464,17cyclictest1213033-21systemd-journal09:34:591
3904722998373,9cyclictest3991864-21kworker/u8:0+flush-179:011:59:551
3904722998372,6cyclictest3975583-21kworker/u8:3+flush-179:011:30:211
3904722998372,6cyclictest3975583-21kworker/u8:3+flush-179:011:30:211
3904722998368,13cyclictest3998228-21kworker/u8:3+flush-179:012:27:161
3904722998275,5cyclictest3998152-21kworker/u8:1+flush-179:012:05:221
3904722998075,3cyclictest3962844-21kworker/u8:2+flush-179:010:25:181
3904722998073,6cyclictest3985717-21apt-get11:20:101
3904722997973,4cyclictest3988612-21kworker/u8:0+events_unbound11:30:011
3904722997970,6cyclictest3917523-21latency_hist07:50:021
3904722997968,7cyclictest3951697-21kworker/u8:3+flush-179:010:05:221
3904722997870,5cyclictest3954885-21kworker/u8:1+flush-179:009:45:221
3904722997870,5cyclictest3954885-21kworker/u8:1+flush-179:009:45:221
3904717997872,4cyclictest3935051-21apt-get08:45:000
3904717997770,5cyclictest1-21systemd08:55:010
3904722997670,5cyclictest3923867-21kworker/u8:2+flush-179:008:10:221
3904722997668,5cyclictest3920952-21kworker/u8:1+events_unbound08:00:231
3904717997669,6cyclictest3920971-21apt-get08:00:100
3904722997468,4cyclictest3975583-21kworker/u8:3+events_unbound11:45:181
3904722997462,8cyclictest3962844-21kworker/u8:2+flush-179:010:10:151
3904722997462,8cyclictest3962844-21kworker/u8:2+flush-179:010:10:151
3904722997363,6cyclictest3917759-21kworker/u8:0+flush-179:008:05:241
3904722997263,7cyclictest3977532-21kworker/u8:2+flush-179:011:00:251
3904717997263,7cyclictest3991864-21kworker/u8:0+flush-179:012:00:250
3904717997263,7cyclictest3924143-21apt-get08:10:130
3904722997162,7cyclictest3927066-21latency_hist08:20:011
3904722996961,6cyclictest3948575-21kworker/u8:0+flush-179:009:40:141
3904722996959,7cyclictest3966044-21latency_hist10:20:011
3904717996957,9cyclictest3982229-21kworker/u8:0+flush-179:011:10:240
3904722996859,6cyclictest3951697-21kworker/u8:3+flush-179:009:55:201
3904722996759,5cyclictest3927722-21kworker/u8:1+flush-179:008:50:221
3904722996456,6cyclictest3982229-21kworker/u8:0+flush-179:011:10:221
3904722996357,4cyclictest3937012-21kworker/u8:3+flush-179:009:00:171
3904722996357,4cyclictest3937012-21kworker/u8:3+flush-179:009:00:171
3904722996357,4cyclictest3901520-21kworker/u8:3+flush-179:007:25:141
3904722996356,5cyclictest3977532-21kworker/u8:2+events_unbound11:00:001
3904722996355,6cyclictest3951697-21kworker/u8:3+flush-179:009:50:221
3904722996353,7cyclictest3998228-21kworker/u8:3+flush-179:012:15:201
3904717996356,5cyclictest1213033-21systemd-journal07:34:550
3904717996351,9cyclictest510-21rs:main0
3904717996351,9cyclictest3904476-21latency_hist07:10:020
3904728996259,2cyclictest0-21swapper/210:38:592
3904722996255,5cyclictest3998228-21kworker/u8:3+events_unbound12:10:221
3904722996253,7cyclictest3917778-21apt-get07:50:101
3904722996250,9cyclictest1213033-21systemd-journal10:24:171
3904722996250,8cyclictest3998228-21kworker/u8:3+events_unbound12:35:201
3904717996251,9cyclictest3943758-21apt-get09:10:100
3904717996152,7cyclictest3970790-21kworker/u8:0+flush-179:010:40:010
3904730996058,1cyclictest0-21swapper/309:15:593
3904730996058,1cyclictest0-21swapper/309:15:583
390472899600,2cyclictest0-21swapper/210:07:592
3904722996054,5cyclictest3975583-21kworker/u8:3+events_unbound11:40:241
3904722996053,5cyclictest3927722-21kworker/u8:1+flush-179:008:25:231
3904717996054,4cyclictest3975583-21kworker/u8:3+flush-179:011:19:170
3904722995953,4cyclictest3970795-21kworker/u8:1+flush-179:010:35:211
3904722995953,4cyclictest3927722-21kworker/u8:1+flush-179:008:35:151
3904722995953,4cyclictest3927722-21kworker/u8:1+flush-179:008:35:151
3904722995949,6cyclictest3927722-21kworker/u8:1+flush-179:009:25:211
3904717995955,3cyclictest3923867-21kworker/u8:2+flush-179:008:20:020
3904717995953,5cyclictest3912693-21kworker/u8:2+events_unbound07:45:160
3904717995952,5cyclictest3996840-21apt-get11:55:120
3904722995852,4cyclictest3970790-21kworker/u8:0+flush-179:010:40:181
390471799580,56cyclictest3958095-21perf09:54:590
3904722995752,4cyclictest3904540-21kworker/u8:4+flush-179:007:10:211
3904717995745,9cyclictest1213033-21systemd-journal08:00:000
3904722995651,3cyclictest3990204-21kworker/u8:2+flush-179:011:35:211
3904717995646,8cyclictest3975604-21apt-get10:49:540
3904717995548,5cyclictest3990204-21kworker/u8:2+events_unbound11:55:010
3904717995543,9cyclictest1213033-21systemd-journal11:45:000
3904730995452,1cyclictest0-21swapper/310:38:593
3904722995348,4cyclictest3917759-21kworker/u8:0+events_unbound08:40:581
3904722995342,7cyclictest3901520-21kworker/u8:3+flush-179:007:15:201
3904717995343,8cyclictest3976141-21/usr/sbin/munin10:50:230
3904717995341,9cyclictest510-21rs:main0
3904717995248,2cyclictest3951697-21kworker/u8:3+flush-179:010:20:200
3904717995244,6cyclictest3923889-21latency_hist08:10:010
3904717995240,9cyclictest1213033-21systemd-journal12:15:010
3904722995143,6cyclictest3917759-21kworker/u8:0+events_unbound08:20:191
4577091500,13ptp4l441ktimers/307:09:563
3904722995043,4cyclictest3907913-21kworker/u8:0+events_unbound07:20:221
3904717995043,6cyclictest3948575-21kworker/u8:0+flush-179:009:40:190
3904717995040,8cyclictest3958112-21kworker/u8:0+events_unbound10:05:000
3904717995039,9cyclictest4007711-21kworker/u8:2+flush-179:012:35:220
3904717995039,8cyclictest1213033-21systemd-journal08:28:420
3904717994841,6cyclictest3912972-21apt-get07:35:130
3904722994641,4cyclictest3943538-21kworker/u8:2+flush-179:009:20:241
3904722994641,4cyclictest3943538-21kworker/u8:2+flush-179:009:20:231
3904717994637,7cyclictest3951697-21kworker/u8:3+flush-179:010:05:200
3904722994537,5cyclictest3937012-21kworker/u8:3+flush-179:009:10:191
3904717994541,3cyclictest3943538-21kworker/u8:2+events_unbound09:30:180
3904717994432,10cyclictest3998152-21kworker/u8:1+flush-179:012:05:230
3904728994340,2cyclictest0-21swapper/210:59:552
3904717994338,4cyclictest3927722-21kworker/u8:1+flush-179:009:25:220
3904717994337,5cyclictest3937012-21kworker/u8:3+flush-179:009:20:010
3904717994337,5cyclictest3937012-21kworker/u8:3+flush-179:009:20:000
3904717994337,4cyclictest3988637-21latency_hist11:30:010
3904730994034,5cyclictest4007746-21turbostat12:30:003
3904730994034,4cyclictest3998181-21turbostat12:00:013
390473099400,4cyclictest3909550-21turbostat07:25:013
390473099400,38cyclictest3943522-21turbostat09:10:003
3904717994034,5cyclictest3901520-21kworker/u8:3+flush-179:007:15:260
3904717994034,4cyclictest0-21swapper/008:40:010
3904717994034,4cyclictest0-21swapper/008:40:010
3904730993933,5cyclictest3990225-21turbostat11:34:593
3904730993933,5cyclictest3990225-21turbostat11:34:593
390473099390,38cyclictest3985445-21turbostat11:20:003
390473099390,38cyclictest3970824-21turbostat10:35:003
390473099390,38cyclictest3933457-21turbostat08:40:013
390473099390,38cyclictest3933457-21turbostat08:40:003
390473099390,38cyclictest3930273-21turbostat08:30:003
390473099390,38cyclictest3914339-21turbostat07:40:003
390472899390,36cyclictest0-21swapper/207:30:592
3904717993933,4cyclictest3966050-21munin-plugin-st10:19:590
3904717993931,6cyclictest3904540-21kworker/u8:4+flush-179:007:10:150
3904717993929,8cyclictest3970790-21kworker/u8:0+flush-179:010:40:180
390471799390,38cyclictest3940316-21turbostat09:04:560
390471799390,38cyclictest3940316-21turbostat09:04:550
390471799390,37cyclictest714-21Xorg11:46:580
390471799390,37cyclictest714-21Xorg11:00:580
390471799390,2cyclictest714-21Xorg09:10:000
3904730993832,5cyclictest3907943-21turbostat07:20:003
3904728993835,2cyclictest0-21swapper/210:24:542
3904728993834,2cyclictest0-21swapper/211:37:592
3904728993834,2cyclictest0-21swapper/208:32:592
390472899380,36cyclictest0-21swapper/211:28:592
390472899380,35cyclictest0-21swapper/210:29:552
390472899380,35cyclictest0-21swapper/207:29:562
3904717993834,2cyclictest714-21Xorg07:53:590
3904730993734,2cyclictest0-21swapper/311:24:593
390473099370,36cyclictest0-21swapper/310:48:593
3904728993734,2cyclictest0-21swapper/211:04:002
3904728993734,2cyclictest0-21swapper/210:19:592
390472899370,35cyclictest0-21swapper/209:02:592
390472899370,35cyclictest0-21swapper/209:02:582
390472899370,34cyclictest0-21swapper/209:19:542
390472899370,34cyclictest0-21swapper/209:19:542
390472899370,1cyclictest0-21swapper/208:52:592
3904717993728,7cyclictest3951697-21kworker/u8:3+events_unbound09:55:180
3904717993727,8cyclictest3963114-21apt-get10:10:100
3904717993727,8cyclictest3963114-21apt-get10:10:090
3904728993633,2cyclictest0-21swapper/210:14:562
3904728993633,2cyclictest0-21swapper/210:14:552
3904728993633,2cyclictest0-21swapper/208:39:002
3904728993633,2cyclictest0-21swapper/208:38:592
3904728993632,2cyclictest0-21swapper/212:05:592
3904717993628,6cyclictest510-21rs:main0
3904717993628,6cyclictest3991864-21kworker/u8:0+flush-179:012:25:210
3904717993625,9cyclictest1213033-21systemd-journal07:30:000
3904730993533,1cyclictest0-21swapper/310:59:563
3904728993532,2cyclictest0-21swapper/211:34:552
3904728993532,2cyclictest0-21swapper/211:34:552
3904728993532,2cyclictest0-21swapper/210:53:592
3904728993532,2cyclictest0-21swapper/207:54:562
3904728993531,2cyclictest0-21swapper/212:36:592
3904717993530,3cyclictest714-21Xorg11:23:590
3904730993432,1cyclictest0-21swapper/308:53:003
3904730993432,1cyclictest0-21swapper/307:29:563
3904728993432,1cyclictest0-21swapper/211:45:002
3904728993431,2cyclictest0-21swapper/211:25:002
3904717993430,3cyclictest714-21Xorg08:45:580
3904717993430,3cyclictest3970790-21kworker/u8:0+flush-179:010:31:520
3904717993430,3cyclictest3940419-21latency_hist09:00:010
3904730993331,1cyclictest0-21swapper/309:02:593
3904730993331,1cyclictest0-21swapper/309:02:583
3904730993330,2cyclictest0-21swapper/307:30:593
3904730993328,4cyclictest3991826-21turbostat11:40:003
3904730993328,4cyclictest3917536-21turbostat07:50:013
3904730993327,5cyclictest3980696-21turbostat11:05:003
3904730993230,1cyclictest0-21swapper/311:28:593
3904730993229,2cyclictest0-21swapper/311:53:593
3904730993229,2cyclictest0-21swapper/308:42:593
3904728993230,1cyclictest0-21swapper/207:15:002
3904728993229,2cyclictest0-21swapper/209:45:592
3904728993229,2cyclictest0-21swapper/209:45:592
3904728993229,2cyclictest0-21swapper/209:24:562
3904728993229,2cyclictest0-21swapper/209:24:562
3904728993229,2cyclictest0-21swapper/208:49:552
3904722993226,3cyclictest0-21swapper/107:10:021
3904730993130,1cyclictest0-21swapper/310:29:563
3904730993129,1cyclictest0-21swapper/309:51:593
3904730993125,5cyclictest3967646-21turbostat10:25:013
390473099310,2cyclictest3950147-21turbostat09:30:003
3904728993128,2cyclictest0-21swapper/212:24:592
3904728993128,2cyclictest0-21swapper/212:14:552
3904728993128,2cyclictest0-21swapper/209:54:592
3904728993127,2cyclictest0-21swapper/209:08:002
3904728993127,2cyclictest0-21swapper/208:58:592
3904717993128,2cyclictest714-21Xorg10:29:590
3904717993127,2cyclictest714-21Xorg11:05:590
4577091300,7ptp4l441ktimers/310:15:013
4577091300,7ptp4l441ktimers/310:15:003
4577091300,4ptp4l61490irq/134-eno1-TxRx-009:59:563
3904730993028,1cyclictest0-21swapper/307:10:593
3904730993025,4cyclictest3993426-21turbostat11:45:003
390473099300,2cyclictest0-21swapper/309:20:043
390473099300,2cyclictest0-21swapper/309:20:033
390473099300,29cyclictest0-21swapper/309:35:003
3904728993027,2cyclictest0-21swapper/212:15:122
3904728993027,2cyclictest0-21swapper/210:44:552
3904728993027,2cyclictest0-21swapper/210:00:132
390472899300,2cyclictest0-21swapper/212:25:122
390472899300,28cyclictest0-21swapper/208:25:152
390471799301,27cyclictest714-21Xorg10:57:000
4577091290,7ptp4l441ktimers/308:00:003
4577091290,6ptp4l441ktimers/308:14:563
3904730992927,1cyclictest0-21swapper/312:15:123
3904730992927,1cyclictest0-21swapper/308:32:593
3904730992926,2cyclictest0-21swapper/310:19:593
3904730992926,2cyclictest0-21swapper/310:00:123
390473099290,27cyclictest0-21swapper/312:10:113
390473099290,27cyclictest0-21swapper/311:10:133
3904728992926,2cyclictest0-21swapper/209:40:102
3904728992926,2cyclictest0-21swapper/207:23:592
390472899290,27cyclictest0-21swapper/211:50:122
390472899290,27cyclictest0-21swapper/211:10:132
390472899290,27cyclictest0-21swapper/210:45:132
390472899290,27cyclictest0-21swapper/207:45:132
4577091280,7ptp4l61490irq/134-eno1-TxRx-009:40:003
3904730992826,1cyclictest0-21swapper/309:40:113
3904730992825,2cyclictest0-21swapper/310:53:593
3904730992825,2cyclictest0-21swapper/308:45:013
390473099280,27cyclictest0-21swapper/312:38:593
390473099280,26cyclictest0-21swapper/307:50:123
3904728992825,2cyclictest0-21swapper/212:35:002
390472899280,26cyclictest0-21swapper/207:42:592
4577091270,5ptp4l441ktimers/310:45:013
4577091270,5ptp4l441ktimers/309:15:003
4577091270,5ptp4l441ktimers/308:25:013
390473099270,20cyclictest0-21swapper/312:05:593
3904728992724,2cyclictest0-21swapper/209:31:592
3904728992724,2cyclictest0-21swapper/209:25:592
3904728992723,2cyclictest0-21swapper/207:16:592
390472899270,24cyclictest0-21swapper/209:12:592
390471799270,2cyclictest714-21Xorg07:41:590
4577091260,6ptp4l61490irq/134-eno1-TxRx-012:34:553
4577091260,6ptp4l61490irq/134-eno1-TxRx-008:10:003
4577091260,5ptp4l61490irq/134-eno1-TxRx-012:24:563
4577091260,5ptp4l441ktimers/311:50:003
4577091260,5ptp4l441ktimers/309:49:563
4577091260,5ptp4l441ktimers/309:49:553
4577091260,4ptp4l441ktimers/311:10:013
3904730992625,1cyclictest0-21swapper/308:58:593
3904730992623,2cyclictest0-21swapper/308:17:583
390473099260,25cyclictest0-21swapper/312:03:593
3904728992623,2cyclictest0-21swapper/208:24:592
3904728992623,1cyclictest0-21swapper/211:05:132
390472899260,2cyclictest0-21swapper/211:56:592
390472899260,24cyclictest0-21swapper/208:01:592
3904730992522,2cyclictest0-21swapper/307:42:593
3904728992522,2cyclictest0-21swapper/210:32:592
3904728992522,2cyclictest0-21swapper/208:17:592
3904728992421,2cyclictest0-21swapper/209:55:592
3904728992421,2cyclictest0-21swapper/209:40:002
3904728992320,2cyclictest0-21swapper/211:15:582
3904728992320,2cyclictest0-21swapper/208:12:592
3904728992320,2cyclictest0-21swapper/207:36:002
3904728992219,2cyclictest0-21swapper/207:56:592
3904730992119,1cyclictest0-21swapper/308:01:583
3904728992017,2cyclictest0-21swapper/211:49:552
3904728992017,2cyclictest0-21swapper/208:43:592
3904728991816,1cyclictest0-21swapper/212:05:002
39047289974,2cyclictest0-21swapper/208:05:142
39047289940,3cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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