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2026-08-01 - 18:20
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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 highest latencies:
System rackeslot6.osadl.org (updated Sat Aug 01, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9055899161150,8cyclictest178649-21latency_hist11:45:011
9055899148135,9cyclictest121058-21latency_hist08:45:021
90554991340,131cyclictest1-21systemd07:15:000
9055499133125,5cyclictest179146-21kworker/u8:3+flush-179:012:40:000
9055499130124,4cyclictest83890-21kworker/u8:3+flush-179:007:45:000
9055499130122,5cyclictest114669-21kworker/u8:0+events_unbound08:45:140
9055499127118,6cyclictest151819-21kworker/u8:1+flush-179:010:50:010
9055499125118,4cyclictest150004-21kworker/u8:3+events_unbound10:20:020
9055499124115,7cyclictest136959-21kworker/u8:1+flush-179:009:40:010
90554991200,115cyclictest1-21systemd07:25:000
9055499116107,7cyclictest175430-21kworker/u8:1+events_unbound11:40:010
9055499116107,7cyclictest175430-21kworker/u8:1+events_unbound11:40:010
9055499113108,4cyclictest151819-21kworker/u8:1+events_unbound10:45:010
9055499113108,3cyclictest93640-21latency_hist07:20:010
9055499112102,7cyclictest110142-21/usr/sbin/munin08:10:250
9055899111102,6cyclictest172284-21latency_hist11:25:011
9055899111100,8cyclictest190058-21latency_hist12:20:011
9055499109103,4cyclictest114669-21kworker/u8:0+flush-179:008:25:000
9055499109100,6cyclictest186864-21latency_hist12:10:010
905589910799,5cyclictest151819-21kworker/u8:1+flush-179:010:50:261
905589910597,5cyclictest114669-21kworker/u8:0+flush-179:008:40:011
905589910495,6cyclictest183678-21latency_hist12:00:001
905589910395,6cyclictest164306-21latency_hist11:00:011
905549910396,5cyclictest105373-21kworker/u8:1+events_unbound07:55:180
905549910391,9cyclictest98402-21latency_hist07:35:000
905549910296,4cyclictest183735-21kworker/u8:2+flush-179:012:15:000
905549910295,6cyclictest132258-21kworker/u8:3+events_unbound09:25:000
905549910290,9cyclictest103790-21apt-get07:50:130
905549910091,6cyclictest90418-21latency_hist07:10:020
905549910090,7cyclictest122622-21kworker/u8:3+flush-179:008:55:160
90558999790,5cyclictest71610-21kworker/u8:1+events_unbound07:15:011
90554999788,6cyclictest117863-21latency_hist08:35:010
90558999686,7cyclictest179146-21kworker/u8:3+flush-179:012:25:241
90558999686,7cyclictest108315-21latency_hist08:05:021
90554999488,4cyclictest179146-21kworker/u8:3+flush-179:012:25:160
90554999487,5cyclictest170644-21kworker/u8:0+events_unbound11:35:010
90554999383,7cyclictest135381-21kworker/u8:0+flush-179:009:45:240
90554999286,4cyclictest151819-21kworker/u8:1+flush-179:011:15:150
90558999181,6cyclictest114669-21kworker/u8:0+flush-179:008:25:181
90558999179,4cyclictest109883-21kworker/u8:0+flush-179:008:15:001
90554999184,4cyclictest127415-21kworker/u8:1+events_unbound09:10:140
90554999180,8cyclictest1213033-21systemd-journal08:30:000
90554999082,5cyclictest179146-21kworker/u8:3+flush-179:012:00:140
90558998980,6cyclictest145212-21latency_hist10:00:021
90554998984,4cyclictest156361-21kworker/u8:3+events_unbound10:35:000
90554998983,4cyclictest183652-21kworker/u8:1+flush-179:012:00:010
90554998976,7cyclictest151819-21kworker/u8:1+events_unbound10:50:170
90554998879,7cyclictest173865-21latency_hist11:30:010
90554998876,9cyclictest126096-21apt-get09:00:120
90558998780,5cyclictest105373-21kworker/u8:1+flush-179:008:20:241
90558998777,7cyclictest127415-21kworker/u8:1+flush-179:009:10:211
90554998780,5cyclictest183735-21kworker/u8:2+flush-179:012:15:150
90554998780,5cyclictest135381-21kworker/u8:0+flush-179:010:25:000
90558998674,10cyclictest1213033-21systemd-journal07:25:001
90554998681,3cyclictest151819-21kworker/u8:1+flush-179:010:25:240
90554998678,5cyclictest156361-21kworker/u8:3+flush-179:011:00:210
90554998676,7cyclictest132258-21kworker/u8:3+flush-179:009:30:200
90554998675,8cyclictest124230-21latency_hist08:55:020
90554998675,8cyclictest124230-21latency_hist08:55:010
90558998574,8cyclictest168546-21kworker/u8:2+flush-179:011:30:221
90554998578,5cyclictest119505-21kworker/u8:1+flush-179:008:40:210
90554998575,8cyclictest156601-21apt-get10:35:150
90554998477,5cyclictest168546-21kworker/u8:2+events_unbound11:20:260
90554998475,7cyclictest148383-21latency_hist10:10:000
90554998475,6cyclictest127403-21kworker/u8:0+flush-179:009:05:210
90558998378,4cyclictest105373-21kworker/u8:1+flush-179:008:20:001
90558998375,5cyclictest151819-21kworker/u8:1+flush-179:011:05:261
90558998356,10cyclictest1213033-21systemd-journal11:55:001
90554998378,4cyclictest136959-21kworker/u8:1+events_unbound10:00:260
90554998375,5cyclictest156361-21kworker/u8:3+flush-179:010:55:230
90558998271,9cyclictest175710-21apt-get11:35:121
90558998271,9cyclictest175710-21apt-get11:35:121
90554998276,5cyclictest135381-21kworker/u8:0+flush-179:010:10:280
90558998176,4cyclictest71610-21kworker/u8:1+flush-179:007:25:221
90558998171,7cyclictest188449-21latency_hist12:15:011
90554998173,6cyclictest117839-21kworker/u8:2+flush-179:008:35:140
90554998173,6cyclictest105373-21kworker/u8:1+flush-179:008:15:250
90554998066,4cyclictest177029-21kworker/u8:2+events_unbound11:50:240
90554997971,6cyclictest194822-21latency_hist12:35:010
90558997867,4cyclictest135381-21kworker/u8:0+events_unbound10:10:001
90558997864,12cyclictest138587-21apt-get09:40:011
90558997770,5cyclictest106725-21latency_hist08:00:011
90554997766,9cyclictest510-21rs:main0
90558997666,8cyclictest1213033-21systemd-journal09:50:001
90558997568,5cyclictest170644-21kworker/u8:0+events_unbound11:25:241
90558997466,6cyclictest121091-21kworker/u8:2+flush-179:008:50:261
90558997466,6cyclictest121091-21kworker/u8:2+flush-179:008:50:261
90554997468,4cyclictest105373-21kworker/u8:1+events_unbound08:05:000
90554997467,5cyclictest135381-21kworker/u8:0+flush-179:009:55:000
90554997467,4cyclictest83890-21kworker/u8:3+flush-179:007:25:210
90558997363,8cyclictest121315-21apt-get08:45:111
90554997367,4cyclictest127415-21kworker/u8:1+flush-179:009:15:140
90554997366,5cyclictest177029-21kworker/u8:2+flush-179:011:45:180
90554997363,4cyclictest132173-21kworker/u8:2+events_unbound09:25:230
90558997266,4cyclictest168546-21kworker/u8:2+flush-179:011:15:161
90558997265,5cyclictest151819-21kworker/u8:1+events_unbound10:29:591
90558997163,5cyclictest156361-21kworker/u8:3+flush-179:010:40:171
90558997162,7cyclictest135381-21kworker/u8:0+flush-179:009:30:001
90558997064,4cyclictest150004-21kworker/u8:3+flush-179:010:15:161
90558997063,5cyclictest156361-21kworker/u8:3+events_unbound10:40:001
90558997063,5cyclictest156319-21kworker/u8:2+flush-179:010:35:001
90554997063,5cyclictest168736-21swap11:10:270
90554997063,5cyclictest168736-21swap11:10:270
90558996964,4cyclictest135381-21kworker/u8:0+flush-179:010:20:231
90554996959,8cyclictest167494-21latency_hist11:10:010
90558996861,5cyclictest83890-21kworker/u8:3+flush-179:007:50:231
90558996858,7cyclictest510-21rs:main1
90554996862,5cyclictest83890-21kworker/u8:3+events_unbound07:35:250
90558996761,4cyclictest165955-21kworker/u8:0+flush-179:011:10:191
90558996761,4cyclictest165955-21kworker/u8:0+flush-179:011:10:191
90554996755,9cyclictest1213033-21systemd-journal07:49:590
9056299660,1cyclictest0-21swapper/308:13:593
90558996660,4cyclictest83890-21kworker/u8:3+flush-179:007:30:211
90554996661,4cyclictest135381-21kworker/u8:0+flush-179:009:44:570
90558996560,3cyclictest83890-21kworker/u8:3+flush-179:007:15:231
90558996460,3cyclictest179146-21kworker/u8:3+flush-179:012:09:551
90558996456,5cyclictest177029-21kworker/u8:2+flush-179:011:50:001
90562996361,1cyclictest0-21swapper/311:32:593
90558996357,4cyclictest83890-21kworker/u8:3+flush-179:007:45:221
90558996356,4cyclictest127403-21kworker/u8:0+flush-179:009:05:001
90562996258,2cyclictest0-21swapper/307:55:003
90558996254,5cyclictest135381-21kworker/u8:0+flush-179:010:10:191
90554996254,5cyclictest175430-21kworker/u8:1+flush-179:011:40:150
90558996155,4cyclictest135381-21kworker/u8:0+events_unbound09:40:151
90554996156,4cyclictest107394-21kworker/u8:2+flush-179:008:05:270
90558996052,6cyclictest127403-21kworker/u8:0+flush-179:009:05:161
90558996051,7cyclictest183735-21kworker/u8:2+flush-179:012:20:151
90558995852,4cyclictest114669-21kworker/u8:0+flush-179:008:30:171
90558995851,5cyclictest136959-21kworker/u8:1+flush-179:009:50:221
90558995850,6cyclictest130858-21apt-get09:15:121
90558995752,4cyclictest132173-21kworker/u8:2+events_unbound09:20:231
90554995751,4cyclictest183735-21kworker/u8:2+events_unbound12:20:180
90559995654,1cyclictest0-21swapper/208:44:582
90558995550,4cyclictest179146-21kworker/u8:3+flush-179:012:00:161
90558995549,5cyclictest107394-21kworker/u8:2+events_unbound08:05:151
90558995348,4cyclictest97306-21kworker/u8:0+flush-179:007:40:261
4577091530,38ptp4l61490irq/134-eno1-TxRx-012:09:553
90562995144,5cyclictest133816-21turbostat09:25:003
4577091500,13ptp4l61490irq/134-eno1-TxRx-007:09:553
90558994843,3cyclictest137014-21systemd-run09:35:001
90558994842,5cyclictest97306-21kworker/u8:0+flush-179:007:40:011
90558994540,4cyclictest156361-21kworker/u8:3+flush-179:011:00:251
90562994437,5cyclictest156362-21turbostat10:35:003
90562994234,7cyclictest0-21swapper/307:25:003
90558994236,5cyclictest135381-21kworker/u8:0+flush-179:010:01:011
90562994139,1cyclictest0-21swapper/308:29:593
90559994037,2cyclictest0-21swapper/210:38:592
90559993937,1cyclictest0-21swapper/208:59:592
90559993936,1cyclictest0-21swapper/208:50:012
90562993836,1cyclictest0-21swapper/309:29:003
90562993836,1cyclictest0-21swapper/307:16:593
9055999380,36cyclictest0-21swapper/211:12:002
9055999380,36cyclictest0-21swapper/211:11:592
9055999380,36cyclictest0-21swapper/208:37:002
9055999380,36cyclictest0-21swapper/208:05:582
9055999380,36cyclictest0-21swapper/207:42:592
9055999380,35cyclictest0-21swapper/210:17:592
9055999380,35cyclictest0-21swapper/209:42:592
9055999380,35cyclictest0-21swapper/209:27:592
90562993723,4cyclictest100355-21turbostat07:40:013
90559993735,1cyclictest0-21swapper/209:25:002
90559993734,2cyclictest0-21swapper/211:05:592
90559993734,2cyclictest0-21swapper/210:02:582
90559993734,2cyclictest0-21swapper/208:24:592
90559993734,2cyclictest0-21swapper/208:03:592
90559993733,2cyclictest0-21swapper/210:30:592
9055999370,35cyclictest0-21swapper/212:35:002
9055999370,35cyclictest0-21swapper/211:51:582
9055999370,35cyclictest0-21swapper/211:50:002
9055999370,35cyclictest0-21swapper/211:34:592
9055999370,35cyclictest0-21swapper/211:28:592
9055999370,35cyclictest0-21swapper/210:13:592
9055999370,35cyclictest0-21swapper/210:09:002
9055999370,35cyclictest0-21swapper/209:02:592
9055999370,35cyclictest0-21swapper/208:19:592
9055999370,35cyclictest0-21swapper/207:58:592
9055999370,35cyclictest0-21swapper/207:28:592
9055999370,35cyclictest0-21swapper/207:21:582
9055999370,35cyclictest0-21swapper/207:17:592
90558993732,4cyclictest151819-21kworker/u8:1+flush-179:010:45:161
90562993634,1cyclictest0-21swapper/312:35:593
90562993634,1cyclictest0-21swapper/308:54:593
90562993634,1cyclictest0-21swapper/308:54:593
90562993634,1cyclictest0-21swapper/308:05:593
9056299360,35cyclictest0-21swapper/310:08:593
9056299360,35cyclictest0-21swapper/308:04:553
9056299360,1cyclictest0-21swapper/312:19:553
9056299360,1cyclictest0-21swapper/309:35:583
90559993633,2cyclictest0-21swapper/211:22:592
90559993633,2cyclictest0-21swapper/211:15:592
90559993633,2cyclictest0-21swapper/209:17:592
90559993633,2cyclictest0-21swapper/208:31:592
9055999360,34cyclictest0-21swapper/212:28:592
9055999360,34cyclictest0-21swapper/212:09:592
9055999360,1cyclictest0-21swapper/211:00:592
9055999360,1cyclictest0-21swapper/208:13:592
9055999360,1cyclictest0-21swapper/207:34:592
90558993630,5cyclictest121091-21kworker/u8:2+flush-179:008:56:021
90562993533,1cyclictest0-21swapper/308:57:003
90562993527,2cyclictest0-21swapper/312:10:143
9056299350,34cyclictest0-21swapper/309:47:593
90559993533,1cyclictest0-21swapper/212:05:002
90559993532,2cyclictest0-21swapper/212:37:002
90559993532,2cyclictest0-21swapper/211:59:552
90558993530,4cyclictest281ktimers/112:30:141
90559993330,2cyclictest0-21swapper/209:05:582
90562993230,1cyclictest0-21swapper/308:37:593
90562993230,1cyclictest0-21swapper/307:11:003
90559993229,2cyclictest0-21swapper/212:10:592
90562993129,1cyclictest0-21swapper/311:27:593
90562993129,1cyclictest0-21swapper/309:34:583
90562993129,1cyclictest0-21swapper/309:08:593
90562993129,1cyclictest0-21swapper/307:26:593
90559993128,2cyclictest0-21swapper/207:52:592
9055999310,29cyclictest0-21swapper/207:35:132
4577091310,7ptp4l441ktimers/311:20:003
4577091310,7ptp4l441ktimers/308:45:013
9056299300,28cyclictest0-21swapper/310:50:153
9056299300,28cyclictest0-21swapper/308:45:133
90559993027,2cyclictest0-21swapper/212:17:592
90559993027,2cyclictest0-21swapper/210:53:592
90559993027,2cyclictest0-21swapper/209:56:592
90559993027,2cyclictest0-21swapper/207:10:142
9055999300,28cyclictest0-21swapper/209:45:122
9055999300,28cyclictest0-21swapper/207:48:592
4577091300,6ptp4l441ktimers/311:25:003
90562992927,1cyclictest0-21swapper/311:40:133
90562992927,1cyclictest0-21swapper/311:36:003
90562992927,1cyclictest0-21swapper/311:36:003
90562992927,1cyclictest0-21swapper/309:50:583
90562992922,5cyclictest180503-21turbostat11:50:003
9056299290,28cyclictest0-21swapper/309:40:023
9056299290,28cyclictest0-21swapper/308:15:123
9056299290,27cyclictest0-21swapper/310:55:153
9056299290,27cyclictest0-21swapper/307:45:133
90559992926,2cyclictest0-21swapper/209:31:002
90559992926,2cyclictest0-21swapper/208:29:552
9055999290,27cyclictest0-21swapper/209:50:142
4577091290,7ptp4l61490irq/134-eno1-TxRx-010:25:003
4577091290,6ptp4l61490irq/134-eno1-TxRx-012:05:013
4577091290,6ptp4l441ktimers/309:19:553
4577091290,5ptp4l441ktimers/309:15:013
90562992826,1cyclictest0-21swapper/312:25:593
9056299280,26cyclictest0-21swapper/312:30:593
9056299280,26cyclictest0-21swapper/312:20:133
90559992825,2cyclictest0-21swapper/210:48:592
90559992824,2cyclictest0-21swapper/211:38:592
90559992824,2cyclictest0-21swapper/211:38:592
4577091280,6ptp4l61490irq/134-eno1-TxRx-010:00:003
4577091280,6ptp4l61490irq/134-eno1-TxRx-007:35:003
4577091280,6ptp4l441ktimers/308:00:013
4577091280,5ptp4l441ktimers/310:40:003
90562992725,1cyclictest0-21swapper/311:55:153
9056299270,26cyclictest0-21swapper/310:40:593
9056299270,26cyclictest0-21swapper/310:10:153
4577091270,5ptp4l61490irq/134-eno1-TxRx-010:30:003
4577091270,5ptp4l61490irq/134-eno1-TxRx-007:44:563
4577091270,5ptp4l441ktimers/311:04:553
4577091270,5ptp4l441ktimers/308:24:553
4577091270,4ptp4l441ktimers/310:05:013
4577091270,4ptp4l441ktimers/308:35:013
4577091270,3ptp4l441ktimers/310:50:013
90562992624,1cyclictest0-21swapper/311:52:593
9055999260,2cyclictest0-21swapper/211:40:132
9055999260,1cyclictest0-21swapper/210:55:592
4577091260,5ptp4l61490irq/134-eno1-TxRx-011:14:563
4577091260,5ptp4l61490irq/134-eno1-TxRx-011:14:563
4577091260,5ptp4l61490irq/134-eno1-TxRx-011:09:573
4577091260,3ptp4l441ktimers/310:20:023
4577091260,3ptp4l441ktimers/309:04:553
90559992522,2cyclictest0-21swapper/210:42:592
90559992522,2cyclictest0-21swapper/210:27:592
9055999250,2cyclictest0-21swapper/208:50:142
9055999250,2cyclictest0-21swapper/208:50:132
90558992419,3cyclictest0-21swapper/107:10:011
90559991916,2cyclictest0-21swapper/212:22:002
90559991614,1cyclictest0-21swapper/209:14:592
90559991312,1cyclictest0-21swapper/209:40:002
9055999118,2cyclictest0-21swapper/210:22:002
905599920,1cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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