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2026-04-01 - 11:44
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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 Wed Apr 01, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3041439910588,15cyclictest346242-21apt-get21:20:120
304146999990,7cyclictest397965-40mandb00:00:011
304143999384,6cyclictest378568-21latency_hist23:00:020
304143999086,2cyclictest363773-21kworker/u8:3+events_unbound22:20:030
304146998576,6cyclictest394748-21latency_hist23:50:011
304143998272,7cyclictest383360-21apt-get23:15:000
304143998071,7cyclictest388620-21/usr/sbin/munin23:30:230
304146997972,4cyclictest369074-21kworker/u8:3+flush-179:022:45:201
304143997969,8cyclictest325285-21latency_hist20:15:010
304143997872,4cyclictest384669-21kworker/u8:2+events_unbound23:15:240
304143997867,9cyclictest400105-21apt-get00:10:070
304143997468,4cyclictest304062-21kworker/u8:2+flush-179:019:15:000
304143997365,6cyclictest362399-21apt-get22:10:110
304146997262,7cyclictest266-21systemd-journal23:32:051
304143997263,7cyclictest266-21systemd-journal20:25:010
304146997163,6cyclictest374470-21kworker/u8:0+flush-179:023:10:001
304146997063,4cyclictest324715-21kworker/u8:3+events_unbound20:50:241
304146996961,5cyclictest389955-21kworker/u8:3+flush-179:023:35:201
304146996959,7cyclictest358748-21kworker/u8:0+flush-179:022:05:221
304143996962,5cyclictest389955-21kworker/u8:3+flush-179:000:00:010
304146996862,4cyclictest365834-21kworker/u8:0+flush-179:022:24:561
304146996859,6cyclictest310948-21/usr/sbin/munin19:30:241
304143996859,7cyclictest385467-21apt-get23:20:120
30414399680,2cyclictest714-21Xorg19:22:590
304146996660,4cyclictest304062-21kworker/u8:2+events_unbound19:15:251
304146996658,5cyclictest307523-21kworker/u8:1+flush-179:019:35:221
304146996656,7cyclictest405387-21/usr/sbin/munin00:25:251
304146996456,6cyclictest350744-21latency_hist21:35:011
304146996358,3cyclictest369029-21latency_hist22:30:001
304143996357,4cyclictest330321-21apt-get20:30:110
304143996355,6cyclictest266-21systemd-journal00:20:000
304146996259,2cyclictest0-21swapper/120:10:581
304143996257,3cyclictest369074-21kworker/u8:3+flush-179:022:40:210
304146996153,7cyclictest333293-21kworker/u8:1+events_unbound21:55:001
304146996151,7cyclictest374470-21kworker/u8:0+events_unbound22:50:221
304146996148,7cyclictest374470-21kworker/u8:0+events_unbound23:10:151
304143996155,4cyclictest393420-21apt-get23:45:100
304143996154,4cyclictest369074-21kworker/u8:3+flush-179:022:45:160
304143996152,7cyclictest266-21systemd-journal19:50:000
304146995952,5cyclictest385203-21latency_hist23:20:011
304143995955,3cyclictest378542-21kworker/u8:1+flush-179:023:00:200
304143995953,4cyclictest317055-21kworker/u8:1+events_unbound20:00:230
304143995952,5cyclictest324715-21kworker/u8:3+flush-179:020:50:200
304143995952,5cyclictest266-21systemd-journal00:04:000
304143995851,5cyclictest409935-21latency_hist00:40:010
304143995849,6cyclictest361814-21kworker/u8:1+events_unbound22:15:120
304146995747,8cyclictest358968-21apt-get22:00:121
304146995744,10cyclictest309083-21apt-get19:23:571
304146995650,5cyclictest345945-21kworker/u8:2+flush-179:021:25:001
304146995648,6cyclictest361814-21kworker/u8:1+events_unbound22:10:021
304143995650,4cyclictest389955-21kworker/u8:3+flush-179:023:50:150
304143995650,4cyclictest336427-21latency_hist20:50:010
304143995650,4cyclictest333293-21kworker/u8:1+flush-179:020:55:230
304143995647,6cyclictest365834-21kworker/u8:0+events_unbound22:35:140
304146995547,5cyclictest333293-21kworker/u8:1+events_unbound21:45:211
304143995550,4cyclictest312334-21kworker/u8:2+flush-179:019:54:550
304146995446,5cyclictest403259-21kworker/u8:0+events_unbound00:20:021
304143995449,4cyclictest326850-21kworker/u8:0+flush-179:020:19:550
304146995347,4cyclictest318897-21kworker/u8:0+flush-179:020:05:181
304146995346,4cyclictest333293-21kworker/u8:1+flush-179:020:55:211
304143995343,7cyclictest333293-21kworker/u8:1+flush-179:021:25:150
304143995343,7cyclictest333293-21kworker/u8:1+events_unbound21:30:160
304143995246,5cyclictest369074-21kworker/u8:3+events_unbound22:30:210
304143995246,4cyclictest348566-21kworker/u8:0+flush-179:021:35:220
304146995146,4cyclictest348566-21kworker/u8:0+flush-179:021:35:151
304146995143,6cyclictest365324-21latency_hist22:20:021
304146995143,6cyclictest333293-21kworker/u8:1+flush-179:020:45:011
304146995143,6cyclictest299545-21kworker/u8:3+flush-179:019:10:211
304146995044,4cyclictest323679-21kworker/u8:2+flush-179:020:25:181
304143995044,5cyclictest349202-21kworker/u8:3+flush-179:022:00:210
304146994943,4cyclictest406717-21kworker/u8:1+flush-179:000:35:161
304146994937,10cyclictest345945-21kworker/u8:2+flush-179:021:20:011
4577091480,13ptp4l441ktimers/319:10:003
4577091480,13ptp4l441ktimers/319:10:003
304146994841,6cyclictest312334-21kworker/u8:2+events_unbound19:45:191
304146994841,4cyclictest384669-21kworker/u8:2+events_unbound23:25:131
304146994839,7cyclictest324715-21kworker/u8:3+flush-179:021:00:281
304143994842,5cyclictest304062-21kworker/u8:2+flush-179:019:19:550
304143994842,4cyclictest323699-21latency_hist20:10:010
304143994741,4cyclictest312268-21kworker/u8:0+flush-179:019:40:210
304143994741,4cyclictest312268-21kworker/u8:0+flush-179:019:40:210
304143994740,5cyclictest333293-21kworker/u8:1+events_unbound21:15:200
304143994737,8cyclictest266-21systemd-journal20:40:000
304146994641,4cyclictest369074-21kworker/u8:3+events_unbound22:40:221
304146994639,5cyclictest317055-21kworker/u8:1+flush-179:019:55:241
304146994637,7cyclictest323679-21kworker/u8:2+events_unbound20:35:191
304143994639,5cyclictest307523-21kworker/u8:1+events_unbound19:35:140
30415199450,1cyclictest0-21swapper/300:36:593
304146994540,4cyclictest397983-21kworker/u8:2+flush-179:000:14:571
304146994539,4cyclictest326899-21latency_hist20:20:011
304143994540,4cyclictest406717-21kworker/u8:1+events_unbound00:30:250
304143994540,4cyclictest361814-21kworker/u8:1+flush-179:022:25:230
304143994537,6cyclictest378542-21kworker/u8:1+events_unbound23:05:200
30414399451,4cyclictest357108-21munin-run21:55:010
304146994440,3cyclictest310743-21systemd-run19:30:001
304146994438,5cyclictest333293-21kworker/u8:1+events_unbound21:40:201
304146994438,4cyclictest312268-21kworker/u8:0+flush-179:019:40:221
304146994438,4cyclictest312268-21kworker/u8:0+flush-179:019:40:221
304146994340,2cyclictest391884-21kworker/u8:0+events_unbound23:40:281
304146994336,5cyclictest406717-21kworker/u8:1+events_unbound00:30:211
304143994337,5cyclictest374470-21kworker/u8:0+events_unbound22:50:150
304146994237,4cyclictest397983-21kworker/u8:2+flush-179:000:15:241
304146994237,4cyclictest389955-21kworker/u8:3+flush-179:023:50:201
304146994237,4cyclictest323679-21kworker/u8:2+flush-179:020:30:161
304146994237,4cyclictest317055-21kworker/u8:1+flush-179:020:04:561
304146994236,4cyclictest328480-21latency_hist20:25:021
304143994236,4cyclictest342777-21kworker/u8:0+flush-179:021:10:220
304151994136,4cyclictest353949-21turbostat21:45:003
304149994138,2cyclictest0-21swapper/221:31:582
304146994137,3cyclictest380212-21systemd-run23:05:011
304146994136,4cyclictest399565-21sshd00:04:011
30414699410,38cyclictest714-21Xorg00:09:591
30414699410,38cyclictest714-21Xorg00:09:591
304151994034,5cyclictest331657-21turbostat20:35:003
30415199400,39cyclictest388393-21turbostat23:30:003
30415199400,38cyclictest399601-21turbostat00:05:003
304146994030,8cyclictest266-21systemd-journal19:55:001
30414699400,38cyclictest714-21Xorg22:31:581
30414699400,37cyclictest714-21Xorg22:56:591
304143994033,4cyclictest0-21swapper/019:29:590
304143994031,7cyclictest333293-21kworker/u8:1+events_unbound21:40:230
304143994029,9cyclictest361885-21latency_hist22:10:020
30415199390,38cyclictest317076-21turbostat19:54:553
304149993936,2cyclictest0-21swapper/219:56:592
304146993933,5cyclictest349202-21kworker/u8:3+flush-179:021:55:211
30414399390,37cyclictest714-21Xorg20:26:590
304151993833,4cyclictest360314-21turbostat22:04:593
304151993833,4cyclictest349172-21turbostat21:30:003
304151993831,5cyclictest376982-21turbostat22:55:003
304149993836,1cyclictest0-21swapper/222:59:582
30414999380,36cyclictest0-21swapper/220:21:592
304146993833,4cyclictest333293-21kworker/u8:1+flush-179:021:05:191
30414699381,6cyclictest0-21swapper/120:45:121
304143993829,7cyclictest312268-21kworker/u8:0+flush-179:019:34:590
30414399380,37cyclictest0-21swapper/000:09:590
30414399380,37cyclictest0-21swapper/000:09:590
30414399380,2cyclictest0-21swapper/023:36:590
304151993734,2cyclictest0-21swapper/323:52:593
304149993734,2cyclictest0-21swapper/223:12:592
30414999370,35cyclictest0-21swapper/223:03:592
30414999370,35cyclictest0-21swapper/222:39:592
304143993734,2cyclictest714-21Xorg23:43:580
30415199360,35cyclictest0-21swapper/319:49:593
30415199360,35cyclictest0-21swapper/319:44:593
30415199360,35cyclictest0-21swapper/319:44:593
304149993633,2cyclictest0-21swapper/223:09:562
304149993633,2cyclictest0-21swapper/222:06:592
304149993633,2cyclictest0-21swapper/220:50:592
304149993633,2cyclictest0-21swapper/219:24:552
30414999360,34cyclictest0-21swapper/222:44:582
30414999360,2cyclictest0-21swapper/200:18:592
30414999360,1cyclictest0-21swapper/200:14:552
304146993629,5cyclictest342777-21kworker/u8:0+events_unbound21:10:241
304146993627,6cyclictest0-21swapper/123:20:141
304143993633,2cyclictest333293-21kworker/u8:1+events_unbound20:40:200
304143993632,3cyclictest714-21Xorg00:28:590
304143993628,7cyclictest333293-21kworker/u8:1+events_unbound21:05:190
30414399361,24cyclictest0-21swapper/021:55:140
304151993533,1cyclictest0-21swapper/321:51:593
304151993533,1cyclictest0-21swapper/321:16:003
30415199350,1cyclictest0-21swapper/322:38:593
30415199350,1cyclictest0-21swapper/321:24:553
304149993532,2cyclictest0-21swapper/223:55:592
30414999350,1cyclictest0-21swapper/220:29:562
30414999350,1cyclictest0-21swapper/220:08:582
30414699351,30cyclictest0-21swapper/121:25:131
304143993528,4cyclictest319324-21fw_packets19:55:190
304143993525,6cyclictest403820-21apt-get00:20:120
304149993431,2cyclictest0-21swapper/222:45:592
304149993431,2cyclictest0-21swapper/219:29:552
304143993431,2cyclictest341213-21munin-run21:05:010
304143993430,3cyclictest387434-21fschecks_time23:25:160
304143993430,2cyclictest355557-21systemd-run21:50:010
304151993326,6cyclictest0-21swapper/322:25:033
30415199330,26cyclictest0-21swapper/323:10:123
304149993331,1cyclictest0-21swapper/221:40:002
304149993331,1cyclictest0-21swapper/200:04:592
304151993227,4cyclictest0-21swapper/319:25:143
304151993226,5cyclictest375404-21turbostat22:50:003
304151993226,5cyclictest0-21swapper/321:35:133
304149993229,2cyclictest0-21swapper/223:30:592
304149993229,2cyclictest0-21swapper/221:28:002
304149993229,2cyclictest0-21swapper/200:32:592
30414699321,27cyclictest370871-21apt-get22:35:131
304151993124,6cyclictest0-21swapper/320:35:113
304149993128,2cyclictest0-21swapper/222:19:562
30414999310,29cyclictest0-21swapper/221:08:592
30415199300,28cyclictest0-21swapper/300:20:033
304149993027,2cyclictest0-21swapper/222:20:122
304149993027,2cyclictest0-21swapper/220:47:002
304149993027,2cyclictest0-21swapper/219:19:552
30414999300,2cyclictest0-21swapper/222:10:142
30414999300,28cyclictest0-21swapper/223:15:022
4577091290,7ptp4l441ktimers/321:15:003
4577091290,7ptp4l441ktimers/300:35:003
304151992927,1cyclictest0-21swapper/322:20:033
304151992927,1cyclictest0-21swapper/322:10:033
304151992926,2cyclictest0-21swapper/321:45:143
304151992926,2cyclictest0-21swapper/321:05:103
304151992926,2cyclictest0-21swapper/320:25:153
304151992923,5cyclictest0-21swapper/319:15:013
30415199290,28cyclictest0-21swapper/320:05:013
30415199290,27cyclictest0-21swapper/322:15:103
30415199290,27cyclictest0-21swapper/300:15:033
304149992926,2cyclictest0-21swapper/223:35:132
304149992926,2cyclictest0-21swapper/222:50:132
304149992926,2cyclictest0-21swapper/222:26:592
304149992926,2cyclictest0-21swapper/221:10:132
304149992926,2cyclictest0-21swapper/219:45:122
304149992926,2cyclictest0-21swapper/200:09:002
304149992926,2cyclictest0-21swapper/200:08:592
30414999290,27cyclictest0-21swapper/223:25:132
30414999290,27cyclictest0-21swapper/220:55:132
30414999290,27cyclictest0-21swapper/220:30:132
4577091280,7ptp4l61490irq/134-eno1-TxRx-000:10:013
4577091280,7ptp4l61490irq/134-eno1-TxRx-000:10:013
4577091280,6ptp4l441ktimers/323:45:003
4577091280,6ptp4l441ktimers/322:30:013
4577091280,6ptp4l441ktimers/320:45:013
304151992826,1cyclictest0-21swapper/320:52:583
304151992823,4cyclictest321863-21turbostat20:04:593
304151992821,6cyclictest0-21swapper/319:10:143
30415199280,27cyclictest0-21swapper/321:00:163
304149992826,1cyclictest0-21swapper/222:35:002
304149992826,1cyclictest0-21swapper/221:43:002
304149992825,2cyclictest0-21swapper/221:15:132
304149992825,2cyclictest0-21swapper/220:18:002
30414999280,27cyclictest0-21swapper/220:10:132
30414999280,27cyclictest0-21swapper/200:20:022
4577091270,7ptp4l441ktimers/321:35:003
4577091270,7ptp4l441ktimers/320:50:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-023:50:013
4577091270,6ptp4l441ktimers/323:40:003
4577091270,6ptp4l441ktimers/323:20:023
4577091270,6ptp4l441ktimers/319:25:003
4577091270,5ptp4l441ktimers/320:20:003
304151992725,1cyclictest0-21swapper/323:55:133
304151992725,1cyclictest0-21swapper/321:55:143
304151992721,5cyclictest378570-21turbostat23:00:003
30415199270,26cyclictest325299-21turbostat20:15:003
30415199270,1cyclictest0-21swapper/300:25:153
304149992724,2cyclictest0-21swapper/222:00:582
304149992724,2cyclictest0-21swapper/200:25:592
30414999270,2cyclictest0-21swapper/219:31:592
30414999270,25cyclictest0-21swapper/223:21:002
231999270,14rtkit-daemon303134-21/usr/sbin/munin19:05:190
231999270,14rtkit-daemon303134-21/usr/sbin/munin19:05:190
4577091260,6ptp4l61490irq/134-eno1-TxRx-023:05:013
4577091260,6ptp4l441ktimers/322:44:563
4577091260,6ptp4l441ktimers/319:40:003
4577091260,5ptp4l61490irq/134-eno1-TxRx-020:59:553
4577091260,5ptp4l441ktimers/323:34:573
4577091260,4ptp4l441ktimers/323:09:553
304149992623,2cyclictest0-21swapper/221:02:002
30414999260,2cyclictest0-21swapper/223:50:592
30414999260,24cyclictest0-21swapper/223:41:592
30414999260,24cyclictest0-21swapper/219:54:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-022:09:563
4577091250,5ptp4l441ktimers/319:34:553
304151992523,1cyclictest0-21swapper/320:23:593
30415199250,24cyclictest0-21swapper/319:56:593
304149992523,1cyclictest0-21swapper/220:39:592
30414999250,24cyclictest0-21swapper/219:10:112
4577091240,4ptp4l441ktimers/300:14:563
304149992321,1cyclictest0-21swapper/221:25:002
304149992320,2cyclictest0-21swapper/200:39:552
304149992220,1cyclictest0-21swapper/221:49:582
304149992220,1cyclictest0-21swapper/220:44:592
304149992219,2cyclictest0-21swapper/219:38:592
4577091210,4ptp4l441ktimers/323:24:553
304149992118,2cyclictest0-21swapper/219:41:592
304149992118,2cyclictest0-21swapper/219:41:592
304149991917,1cyclictest0-21swapper/222:00:002
304149991917,1cyclictest0-21swapper/219:10:012
304149991917,1cyclictest0-21swapper/219:10:012
304149991614,1cyclictest0-21swapper/220:02:002
304149991310,2cyclictest0-21swapper/221:54:552
30414699126,3cyclictest0-21swapper/119:10:011
30414699126,3cyclictest0-21swapper/119:10:011
30414999118,2cyclictest0-21swapper/223:47:592
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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