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2026-05-09 - 06:29
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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 Sat May 09, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
48859799133118,11cyclictest1213033-21systemd-journal00:04:000
48859799111102,6cyclictest529075-21latency_hist21:15:010
4885979910488,12cyclictest1987725-21cups-browsed00:00:000
488597999787,7cyclictest559649-21latency_hist22:50:000
488599999683,11cyclictest585993-21kworker/u8:1+events_unbound00:15:161
488599999586,7cyclictest595537-21latency_hist00:40:001
488599999571,22cyclictest566279-21latency_hist23:10:011
488597999584,8cyclictest1213033-21systemd-journal19:35:130
488599999488,4cyclictest582988-21kworker/u8:4+flush-179:000:04:011
488597999485,6cyclictest538902-21latency_hist21:45:010
488597999383,7cyclictest514236-21latency_hist20:30:010
488599999168,20cyclictest1213033-21systemd-journal19:20:131
488599999081,7cyclictest527492-21latency_hist21:10:021
488599998980,6cyclictest572908-21latency_hist23:30:011
488599998781,4cyclictest491656-21kworker/u8:1+flush-179:019:30:251
488599998376,5cyclictest562173-21kworker/u8:0+flush-179:023:00:161
488597998171,7cyclictest1213033-21systemd-journal20:45:130
488597998171,7cyclictest1213033-21systemd-journal20:45:120
488597997867,9cyclictest580869-21apt-get23:55:010
488599997767,7cyclictest593926-21latency_hist00:35:011
488599997765,10cyclictest522461-21apt-get20:54:591
488599997668,6cyclictest499632-21kworker/u8:1+flush-179:019:55:221
488599997664,10cyclictest493540-21apt-get19:25:111
488599997567,6cyclictest498050-21latency_hist19:40:001
488599997466,6cyclictest587558-21latency_hist00:15:001
488599997464,8cyclictest553538-21apt-get22:30:121
488599997364,7cyclictest509711-21kworker/u8:1+flush-179:020:20:221
488597997362,8cyclictest514282-21kworker/u8:0+flush-179:020:50:150
488599997266,4cyclictest548474-21kworker/u8:0+flush-179:022:25:151
488599997264,6cyclictest519324-21kworker/u8:3+flush-179:021:00:001
488597997263,6cyclictest530701-21latency_hist21:20:000
488597997262,7cyclictest537045-21apt-get21:39:590
488599997165,5cyclictest568468-21kworker/u8:2+flush-179:023:15:211
488599997162,7cyclictest501226-21kworker/u8:2+flush-179:019:50:221
488597997067,2cyclictest0-21swapper/021:26:590
488597997064,4cyclictest714-21Xorg00:30:580
488599996958,9cyclictest564738-21kworker/u8:1+flush-179:023:35:001
488599996956,9cyclictest1213033-21systemd-journal22:40:121
488597996962,5cyclictest546911-21latency_hist22:10:000
488599996762,4cyclictest580324-21kworker/u8:0+events_unbound00:20:231
488599996754,12cyclictest519324-21kworker/u8:3+flush-179:021:00:261
488599996660,4cyclictest504468-21kworker/u8:3+events_unbound20:30:141
488597996658,5cyclictest548474-21kworker/u8:0+flush-179:022:30:220
488599996456,6cyclictest580324-21kworker/u8:0+flush-179:000:05:161
488599996456,6cyclictest580324-21kworker/u8:0+flush-179:000:05:161
488599996455,7cyclictest555105-21/usr/sbin/munin22:35:231
488597996454,8cyclictest569480-21apt-get23:20:010
488603996359,3cyclictest0-21swapper/200:03:592
488599996350,10cyclictest1213033-21systemd-journal21:55:011
488597996354,7cyclictest542075-21latency_hist21:55:010
488597996351,10cyclictest1213033-21systemd-journal19:25:000
488599996256,4cyclictest484950-21kworker/u8:3+flush-179:019:15:191
488597996245,15cyclictest510-21rs:main0
488599996155,5cyclictest548474-21kworker/u8:0+flush-179:022:45:231
488604996058,1cyclictest0-21swapper/300:03:593
488599996049,9cyclictest532529-21apt-get21:25:101
488599995954,4cyclictest493273-21kworker/u8:0+events_unbound20:10:241
488599995947,10cyclictest579531-21apt-get23:50:111
488599995852,4cyclictest532510-21kworker/u8:3+events_unbound21:30:151
488597995851,5cyclictest511107-21kworker/u8:2+flush-179:020:35:180
488599995751,5cyclictest564738-21kworker/u8:1+flush-179:023:20:141
488597995745,9cyclictest1213033-21systemd-journal00:20:180
488599995647,7cyclictest507737-21store20:10:011
488597995652,3cyclictest519324-21kworker/u8:3+flush-179:020:55:250
488597995649,5cyclictest493273-21kworker/u8:0+events_unbound20:00:130
4577091560,17ptp4l61490irq/134-eno1-TxRx-019:06:013
488599995438,14cyclictest539569-21kworker/u8:0+flush-179:021:57:361
488597995448,4cyclictest592342-21latency_hist00:30:010
488597995447,5cyclictest579276-21latency_hist23:50:010
488603995349,2cyclictest0-21swapper/219:22:592
488599995346,5cyclictest525830-21kworker/u8:1+events_unbound21:20:221
488599995341,8cyclictest510-21rs:main1
48859799530,38cyclictest714-21Xorg20:40:590
488599995246,5cyclictest499632-21kworker/u8:1+events_unbound19:45:251
488599995239,5cyclictest591417-21kworker/u8:1+flush-179:000:25:231
488597995243,7cyclictest526143-21/usr/sbin/munin21:05:220
48859799520,2cyclictest714-21Xorg20:12:590
488604995148,2cyclictest0-21swapper/319:22:593
488599995145,5cyclictest484950-21kworker/u8:3+events_unbound19:40:141
488599995045,4cyclictest543639-21kworker/u8:1+events_unbound22:00:241
488599995045,4cyclictest535430-21kworker/u8:1+flush-179:021:35:231
488599995044,5cyclictest488520-21kworker/u8:2+flush-179:019:10:191
488599995043,5cyclictest514282-21kworker/u8:0+events_unbound20:40:131
488599995042,6cyclictest558972-21kworker/u8:1+events_unbound22:50:231
488599995039,8cyclictest1213033-21systemd-journal21:40:141
488597995043,5cyclictest484950-21kworker/u8:3+flush-179:019:15:190
488597995039,9cyclictest503080-21apt-get19:55:110
488597994943,5cyclictest554850-21kworker/u8:3+events_unbound22:40:140
488597994940,7cyclictest535449-21latency_hist21:35:000
48859799490,33cyclictest524576-21http21:00:140
488599994843,4cyclictest545252-21kworker/u8:2+flush-179:022:20:151
488599994842,5cyclictest577735-21kworker/u8:2+flush-179:023:45:221
488597994840,6cyclictest548474-21kworker/u8:0+flush-179:022:35:220
488597994839,7cyclictest559681-21http22:50:010
488597994839,7cyclictest525830-21kworker/u8:1+flush-179:021:20:200
488599994741,5cyclictest580324-21kworker/u8:0+flush-179:023:55:141
488597994742,4cyclictest1213033-21systemd-journal20:10:000
48860399460,43cyclictest0-21swapper/220:44:552
488599994640,4cyclictest529109-21kworker/u8:3+events_unbound21:15:251
488599994635,8cyclictest564738-21kworker/u8:1+flush-179:023:45:001
488597994637,7cyclictest545252-21kworker/u8:2+events_unbound22:25:010
48859799460,5cyclictest569463-21turbostat23:24:550
488599994540,4cyclictest509711-21kworker/u8:1+flush-179:020:29:561
488599994539,5cyclictest564738-21kworker/u8:1+flush-179:023:35:191
488599994537,7cyclictest562173-21kworker/u8:0+flush-179:023:15:001
488597994536,6cyclictest564738-21kworker/u8:1+flush-179:023:30:230
488603994440,2cyclictest0-21swapper/223:08:592
488599994432,10cyclictest1213033-21systemd-journal20:20:011
488597994435,6cyclictest548474-21kworker/u8:0+flush-179:022:15:230
488604994340,2cyclictest0-21swapper/323:08:593
488599994335,6cyclictest547454-21diskstats22:10:141
488597994329,13cyclictest0-21swapper/019:28:590
48860399420,1cyclictest0-21swapper/222:25:002
488599994231,8cyclictest510-21rs:main1
488597994138,2cyclictest0-21swapper/022:12:590
488597994132,7cyclictest572944-21kworker/u8:3+events_unbound23:40:140
488597994130,9cyclictest501226-21kworker/u8:2+flush-179:019:50:160
48860499400,38cyclictest524313-21turbostat21:00:003
48860499400,38cyclictest0-21swapper/320:35:593
488603994036,2cyclictest0-21swapper/220:45:592
488603994036,2cyclictest0-21swapper/220:45:582
48860399400,37cyclictest0-21swapper/200:14:002
488599994035,3cyclictest714-21Xorg21:14:581
488597994033,5cyclictest539156-21apt-get21:45:110
48859799401,2cyclictest714-21Xorg00:38:590
48859799400,38cyclictest553276-21cron22:29:590
488604993935,2cyclictest0-21swapper/320:45:593
488604993935,2cyclictest0-21swapper/320:45:583
48860499390,38cyclictest558069-21turbostat22:45:003
48860399390,36cyclictest0-21swapper/221:35:592
48860399390,30cyclictest0-21swapper/220:35:592
488597993936,2cyclictest714-21Xorg23:03:580
488597993936,2cyclictest714-21Xorg20:16:590
48860499380,36cyclictest0-21swapper/322:31:593
48860499380,1cyclictest0-21swapper/323:56:593
488603993834,2cyclictest0-21swapper/222:14:552
48860399380,35cyclictest0-21swapper/220:19:542
48860399380,35cyclictest0-21swapper/219:15:002
48859999380,2cyclictest714-21Xorg20:47:001
48859999380,2cyclictest714-21Xorg20:47:001
488597993835,2cyclictest0-21swapper/023:11:000
488597993829,7cyclictest585993-21kworker/u8:1+flush-179:000:15:220
488597993828,8cyclictest564949-21apt-get23:05:110
488597993823,13cyclictest0-21swapper/020:33:000
48860499370,1cyclictest0-21swapper/321:02:003
488603993733,2cyclictest0-21swapper/221:59:552
48860399370,35cyclictest0-21swapper/222:31:592
48860399370,2cyclictest0-21swapper/223:57:002
48860399370,2cyclictest0-21swapper/222:52:582
488597993730,5cyclictest488520-21kworker/u8:2+flush-179:019:10:150
48859799370,1cyclictest0-21swapper/019:45:590
488604993633,2cyclictest0-21swapper/321:59:563
48860499360,35cyclictest0-21swapper/300:13:593
48860399360,1cyclictest0-21swapper/223:34:592
488599993631,4cyclictest554850-21kworker/u8:3+flush-179:022:59:551
488597993631,3cyclictest0-21swapper/022:00:000
488597993628,6cyclictest554850-21kworker/u8:3+events_unbound23:00:020
488597993617,17cyclictest0-21swapper/000:05:220
488597993617,17cyclictest0-21swapper/000:05:220
488603993532,2cyclictest0-21swapper/221:46:002
488603993531,3cyclictest0-21swapper/222:26:002
488603993530,3cyclictest0-21swapper/221:34:592
48860399350,1cyclictest0-21swapper/221:02:002
488599993530,4cyclictest714-21Xorg22:19:591
488599993529,4cyclictest540525-21systemd-run21:50:001
488597993528,5cyclictest539569-21kworker/u8:0+events_unbound22:00:150
4577091350,7ptp4l441ktimers/323:55:013
488604993432,1cyclictest0-21swapper/322:14:543
488603993430,2cyclictest0-21swapper/222:39:552
488597993412,21cyclictest573027-21date23:30:000
488597993411,21cyclictest714-21Xorg00:11:590
488604993331,1cyclictest0-21swapper/321:46:003
488604993330,1cyclictest0-21swapper/322:25:593
488603993330,2cyclictest0-21swapper/221:17:002
488603993330,2cyclictest0-21swapper/220:04:552
488603993330,1cyclictest0-21swapper/223:54:592
488603993328,3cyclictest0-21swapper/200:15:582
488597993330,2cyclictest191rcuc/019:32:590
488604993230,1cyclictest0-21swapper/322:39:563
488604993229,2cyclictest0-21swapper/321:34:593
48860499320,30cyclictest0-21swapper/319:56:593
488603993229,2cyclictest0-21swapper/221:11:592
488603993229,2cyclictest0-21swapper/219:51:592
488603993227,2cyclictest0-21swapper/221:28:592
48860399320,29cyclictest0-21swapper/219:56:592
48859799328,5cyclictest484-21dbus-daemon19:45:000
488604993129,1cyclictest0-21swapper/321:16:593
488604993128,2cyclictest0-21swapper/322:54:593
488604993128,2cyclictest0-21swapper/319:51:593
488604993128,1cyclictest0-21swapper/300:15:583
488603993128,2cyclictest0-21swapper/219:44:592
48860399310,29cyclictest0-21swapper/219:45:132
488599993124,4cyclictest506184-21latency_hist20:05:011
4577091310,7ptp4l441ktimers/320:35:003
488604993027,2cyclictest0-21swapper/321:10:123
488604993027,2cyclictest0-21swapper/319:47:593
488604993026,3cyclictest0-21swapper/321:28:593
488604993025,3cyclictest0-21swapper/320:54:593
48860499300,29cyclictest0-21swapper/320:00:123
48860499300,28cyclictest0-21swapper/323:20:113
488603993027,2cyclictest0-21swapper/223:40:122
488603993027,2cyclictest0-21swapper/222:49:592
488603993027,2cyclictest0-21swapper/200:35:592
488603993026,2cyclictest0-21swapper/220:54:592
48860399300,28cyclictest0-21swapper/220:10:032
488604992926,2cyclictest0-21swapper/323:40:123
488604992926,2cyclictest0-21swapper/323:25:123
488604992926,2cyclictest0-21swapper/322:00:133
488604992926,1cyclictest0-21swapper/319:11:593
48860499290,27cyclictest0-21swapper/323:15:133
48860499290,27cyclictest0-21swapper/320:40:033
48860499290,1cyclictest0-21swapper/320:15:123
488603992926,2cyclictest0-21swapper/222:00:122
488603992925,2cyclictest0-21swapper/220:24:592
488603992925,2cyclictest0-21swapper/219:36:592
48860399290,2cyclictest0-21swapper/223:45:122
48860399290,2cyclictest0-21swapper/222:18:582
48860399290,27cyclictest0-21swapper/223:25:112
48860399290,27cyclictest0-21swapper/200:23:592
48860399290,26cyclictest0-21swapper/222:58:592
48860399290,21cyclictest0-21swapper/223:20:122
48859799298,4cyclictest0-21swapper/020:20:250
48859799298,3cyclictest488695-21latency_hist19:10:020
4577091290,6ptp4l441ktimers/323:35:013
4577091290,6ptp4l441ktimers/319:20:013
488604992826,1cyclictest0-21swapper/322:49:583
488604992826,1cyclictest0-21swapper/319:44:593
488604992825,2cyclictest0-21swapper/323:45:123
488604992825,2cyclictest0-21swapper/321:06:593
48860499280,27cyclictest0-21swapper/323:10:123
48860499280,27cyclictest0-21swapper/322:59:003
48860499280,26cyclictest0-21swapper/320:10:033
48860499280,21cyclictest0-21swapper/300:35:133
488603992825,2cyclictest0-21swapper/221:06:582
488603992825,2cyclictest0-21swapper/219:33:592
48860399280,2cyclictest0-21swapper/220:55:022
48860399280,2cyclictest0-21swapper/220:33:002
48860399280,26cyclictest0-21swapper/223:15:122
48860399280,26cyclictest0-21swapper/220:05:592
48860399280,21cyclictest0-21swapper/223:10:112
488599992819,6cyclictest488474-21latency_hist19:10:021
4577091280,7ptp4l61490irq/134-eno1-TxRx-020:24:563
4577091280,7ptp4l61490irq/134-eno1-TxRx-000:30:013
4577091280,7ptp4l441ktimers/300:24:563
488604992724,2cyclictest0-21swapper/322:23:593
488604992724,2cyclictest0-21swapper/322:16:003
488603992724,2cyclictest0-21swapper/221:40:112
488603992723,2cyclictest0-21swapper/220:28:592
488603992723,2cyclictest0-21swapper/200:34:552
48860399270,2cyclictest0-21swapper/200:28:592
4577091270,6ptp4l61490irq/134-eno1-TxRx-021:54:553
4577091270,6ptp4l441ktimers/322:10:013
4577091270,6ptp4l441ktimers/321:44:563
4577091270,6ptp4l441ktimers/320:29:563
4577091270,6ptp4l441ktimers/320:10:003
48860499260,25cyclictest563092-21turbostat23:04:553
488603992623,2cyclictest0-21swapper/222:41:002
4577091260,6ptp4l61490irq/134-eno1-TxRx-019:30:013
4577091260,5ptp4l61490irq/134-eno1-TxRx-019:39:563
4577091260,5ptp4l441ktimers/300:09:563
4577091260,5ptp4l441ktimers/300:09:563
488604992523,1cyclictest0-21swapper/319:33:593
4577091250,4ptp4l61490irq/134-eno1-TxRx-021:39:543
4577091250,4ptp4l441ktimers/300:34:563
488603992420,2cyclictest0-21swapper/221:50:122
4577091240,3ptp4l441ktimers/323:40:013
488603992320,2cyclictest0-21swapper/221:20:582
4577091230,4ptp4l441ktimers/321:24:563
488603992219,2cyclictest0-21swapper/223:38:002
488603991917,1cyclictest0-21swapper/219:19:592
488603991815,2cyclictest0-21swapper/200:06:592
488603991815,2cyclictest0-21swapper/200:06:592
488603991714,2cyclictest0-21swapper/223:01:002
488603991714,2cyclictest0-21swapper/222:05:592
488603991210,1cyclictest0-21swapper/219:29:592
4886039930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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