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2026-07-06 - 14:52
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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 376 highest latencies:
System rackeslot6.osadl.org (updated Mon Jul 06, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
371985299146121,21cyclictest3783400-21latency_hist22:25:021
371985299136123,10cyclictest1213033-21systemd-journal20:05:011
371985299136123,10cyclictest1213033-21systemd-journal20:05:011
371985099131119,9cyclictest3796139-21latency_hist23:05:000
371985099131100,22cyclictest3800917-21latency_hist23:20:010
371985299123111,8cyclictest3804095-21latency_hist23:30:011
371985299122110,9cyclictest3788169-21latency_hist22:40:001
371985099113104,7cyclictest3750551-21kworker/u8:1+flush-179:020:50:230
371985099109101,6cyclictest3808877-21latency_hist23:45:010
37198509910788,16cyclictest3742301-21latency_hist20:20:000
37198529910490,10cyclictest3818739-21latency_hist00:15:001
37198509910496,5cyclictest3794594-21kworker/u8:1+flush-179:023:05:210
37198529910394,6cyclictest3737757-21/usr/sbin/munin20:05:221
37198509910195,4cyclictest3735623-21kworker/u8:0+events_unbound20:00:010
37198509910192,6cyclictest1213033-21systemd-journal22:40:210
37198509910094,4cyclictest3719765-21kworker/u8:3+flush-179:021:05:250
3719850999980,16cyclictest3766688-21latency_hist21:35:000
3719852999885,6cyclictest3804132-21kworker/u8:3+flush-179:000:20:001
3719850999888,7cyclictest3788718-21kworker/u8:0+flush-179:023:10:230
3719852999688,5cyclictest3823791-21apt-get00:30:011
3719850999687,6cyclictest3705230-21kworker/u8:0+flush-179:019:20:220
3719850999687,6cyclictest3705230-21kworker/u8:0+flush-179:019:20:220
3719852999581,11cyclictest3813941-40mandb00:00:011
3719850999485,7cyclictest3770129-21kworker/u8:0+events_unbound22:00:010
3719852998970,16cyclictest3719765-21kworker/u8:3+flush-179:019:54:121
3719850998983,5cyclictest3784974-21kworker/u8:1+flush-179:022:30:210
3719852998880,5cyclictest3776769-21latency_hist22:05:011
3719850998881,5cyclictest3800888-21kworker/u8:1+flush-179:023:20:240
3719850998879,6cyclictest3719765-21kworker/u8:3+flush-179:021:00:170
3719850998879,6cyclictest3719765-21kworker/u8:3+flush-179:021:00:170
3719850998878,7cyclictest3800888-21kworker/u8:1+flush-179:000:00:010
3719850998784,2cyclictest3791390-21kworker/u8:2+events_unbound22:55:140
3719850998679,4cyclictest3763747-21kworker/u8:2+flush-179:021:30:000
3719850998677,7cyclictest1213033-21systemd-journal21:40:010
3719852998575,7cyclictest510-21rs:main1
3719850998577,5cyclictest3746774-21kworker/u8:2+flush-179:021:15:220
3719850998564,9cyclictest3735928-21apt-get20:00:120
3719850998564,9cyclictest3735928-21apt-get20:00:110
3719850998477,5cyclictest3804132-21kworker/u8:3+flush-179:000:15:250
3719850998477,5cyclictest3719765-21kworker/u8:3+flush-179:020:05:030
3719850998473,8cyclictest3825638-21latency_hist00:35:000
3719852998272,8cyclictest3807547-21apt-get23:40:121
3719852998171,7cyclictest3719765-21kworker/u8:3+events_unbound21:10:001
3719852998170,7cyclictest3746774-21kworker/u8:2+events_unbound21:10:241
3719850998175,4cyclictest3781848-21kworker/u8:3+flush-179:022:35:200
3719852997971,6cyclictest3804132-21kworker/u8:3+flush-179:023:40:011
3719852997971,5cyclictest3740687-21latency_hist20:15:011
3719852997969,8cyclictest3765355-21apt-get21:30:121
3719852997870,5cyclictest3760358-21kworker/u8:0+flush-179:021:35:141
3719852997866,8cyclictest3823791-21apt-get00:29:591
3719852997866,8cyclictest3800888-21kworker/u8:1+events_unbound23:45:021
3719850997868,7cyclictest3721323-21latency_hist19:15:010
3719852997769,5cyclictest3760358-21kworker/u8:0+events_unbound21:25:011
3719850997773,3cyclictest3823813-21http00:30:000
3719850997772,3cyclictest3788718-21kworker/u8:0+flush-179:022:45:210
3719850997772,3cyclictest3719765-21kworker/u8:3+flush-179:020:25:220
3719850997770,5cyclictest3766732-21kworker/u8:1+flush-179:021:50:160
3719852997673,2cyclictest3719765-21kworker/u8:3+events_unbound20:55:231
3719850997671,4cyclictest3779926-21kworker/u8:0+flush-179:022:14:570
3719852997565,7cyclictest3800888-21kworker/u8:1+flush-179:023:20:011
3719852997465,7cyclictest3719765-21kworker/u8:3+events_unbound20:30:011
3719852997465,6cyclictest3775168-21latency_hist22:00:001
3719850997468,4cyclictest3778337-21kworker/u8:2+flush-179:022:25:260
3719850997467,4cyclictest3719765-21kworker/u8:3+flush-179:020:10:240
3719850997466,5cyclictest3804132-21kworker/u8:3+flush-179:000:10:230
3719850997464,7cyclictest3782358-21diskstats22:20:150
3719852997361,8cyclictest3788718-21kworker/u8:0+flush-179:022:45:161
3719852997360,8cyclictest3794594-21kworker/u8:1+flush-179:023:05:221
3719850997366,5cyclictest3722967-21kworker/u8:1+events_unbound19:35:010
3719852997261,7cyclictest3791390-21kworker/u8:2+flush-179:022:50:171
3719850997264,5cyclictest3802497-21kworker/u8:0+flush-179:023:25:220
3719850997263,6cyclictest3804132-21kworker/u8:3+flush-179:000:00:150
3719850997263,6cyclictest3804132-21kworker/u8:3+flush-179:000:00:140
3719850997167,3cyclictest3765144-21kworker/u8:3+flush-179:021:40:250
3719852997059,7cyclictest3770129-21kworker/u8:0+flush-179:021:45:261
3719852997055,12cyclictest3719765-21kworker/u8:3+flush-179:021:00:271
3719852997055,12cyclictest3719765-21kworker/u8:3+flush-179:021:00:261
3719850997063,5cyclictest3766732-21kworker/u8:1+events_unbound22:05:160
3719850997060,8cyclictest1213033-21systemd-journal22:05:000
3719850996958,6cyclictest3737282-21kworker/u8:1+flush-179:020:20:230
3719852996858,7cyclictest3771986-21apt-get21:50:131
371985099680,65cyclictest1-21systemd00:38:430
3719852996761,4cyclictest3800888-21kworker/u8:1+events_unbound23:30:251
3719850996657,7cyclictest3729291-21latency_hist19:40:010
3719850996656,8cyclictest3732733-21apt-get19:50:120
3719850996656,8cyclictest3731143-21apt-get19:45:090
3719856996557,6cyclictest3740699-21turbostat20:14:593
3719850996561,3cyclictest3779926-21kworker/u8:0+flush-179:022:15:210
3719850996558,5cyclictest3748896-21kworker/u8:0+flush-179:020:40:110
3719855996461,2cyclictest0-21swapper/222:47:592
3719852996456,6cyclictest3775138-21kworker/u8:3+flush-179:022:10:221
3719850996462,1cyclictest0-21swapper/019:27:580
3719850996459,4cyclictest3750551-21kworker/u8:1+flush-179:020:45:210
3719850996459,4cyclictest3726099-21kworker/u8:2+flush-179:019:40:230
3719852996354,6cyclictest3791390-21kworker/u8:2+flush-179:022:55:161
3719852996354,6cyclictest3748896-21kworker/u8:0+flush-179:020:40:191
3719852996352,8cyclictest3784987-21latency_hist22:30:011
3719850996356,5cyclictest3746774-21kworker/u8:2+events_unbound20:30:210
3719852996260,1cyclictest0-21swapper/119:22:001
3719852996260,1cyclictest0-21swapper/119:21:591
3719852996257,3cyclictest3822857-21kworker/u8:0+flush-179:000:35:251
3719852996252,8cyclictest3810978-21apt-get23:50:111
3719850996256,4cyclictest3800888-21kworker/u8:1+events_unbound00:05:160
3719852996155,5cyclictest3737282-21kworker/u8:1+flush-179:020:15:211
3719852996153,6cyclictest3747864-21diskstats20:35:161
3719852996054,4cyclictest3737282-21kworker/u8:1+flush-179:020:20:251
3719852996054,4cyclictest3719765-21kworker/u8:3+events_unbound20:55:011
3719850996055,4cyclictest3705230-21kworker/u8:0+events_unbound19:15:250
3719850996054,4cyclictest3748896-21kworker/u8:0+flush-179:020:40:010
3719850996053,5cyclictest3791390-21kworker/u8:2+flush-179:022:50:250
3719855995956,2cyclictest0-21swapper/200:03:002
3719855995956,2cyclictest0-21swapper/200:03:002
3719852995949,8cyclictest3768810-21apt-get21:40:121
3719852995947,11cyclictest3719765-21kworker/u8:3+flush-179:020:35:011
3719850995752,4cyclictest3802497-21kworker/u8:0+flush-179:023:35:210
3719852995650,4cyclictest3722967-21kworker/u8:1+flush-179:019:35:181
3719850995651,4cyclictest3804132-21kworker/u8:3+events_unbound23:55:010
3719850995449,4cyclictest3800888-21kworker/u8:1+flush-179:023:30:160
3719855995351,1cyclictest0-21swapper/222:44:592
3719852995348,4cyclictest3788718-21kworker/u8:0+events_unbound23:10:251
3719852995246,4cyclictest3804132-21kworker/u8:3+flush-179:000:05:261
3719852995245,5cyclictest3779926-21kworker/u8:0+flush-179:022:15:161
3719852995244,6cyclictest1213033-21systemd-journal19:10:231
3719850995142,7cyclictest3762469-21diskstats21:20:170
3719850995141,8cyclictest3753941-21apt-get20:55:110
3719852995040,8cyclictest3818785-21kworker/u8:1+flush-179:000:20:231
4577091480,13ptp4l441ktimers/319:09:563
3719852994841,5cyclictest3775138-21kworker/u8:3+flush-179:022:05:251
3719852994838,7cyclictest3791390-21kworker/u8:2+flush-179:023:00:201
3719850994838,5cyclictest3818785-21kworker/u8:1+events_unbound00:20:250
3719852994742,4cyclictest3729269-21kworker/u8:0+flush-179:019:45:001
3719850994641,4cyclictest3804132-21kworker/u8:3+events_unbound23:45:220
3719852994437,5cyclictest3814193-21apt-get00:00:101
3719852994437,5cyclictest3814193-21apt-get00:00:101
3719852994424,18cyclictest0-21swapper/119:20:011
3719852994338,4cyclictest3784974-21kworker/u8:1+flush-179:022:30:251
3719852994337,5cyclictest3746774-21kworker/u8:2+flush-179:021:15:251
371985299430,41cyclictest3726111-21turbostat19:34:551
3719852994232,8cyclictest3705230-21kworker/u8:0+events_unbound19:25:141
3719850994235,5cyclictest484-21dbus-daemon21:50:000
3719856994138,2cyclictest0-21swapper/321:06:003
3719850994134,5cyclictest3746774-21kworker/u8:2+flush-179:021:10:200
3719856994037,2cyclictest0-21swapper/319:22:003
3719856994037,2cyclictest0-21swapper/319:22:003
371985699400,39cyclictest3805696-21turbostat23:35:003
371985699400,39cyclictest0-21swapper/322:29:553
3719852994025,14cyclictest3800888-21kworker/u8:1+flush-179:023:21:341
3719855993936,2cyclictest0-21swapper/222:29:592
371985599390,36cyclictest0-21swapper/223:19:552
3719856993831,5cyclictest3813913-21turbostat00:00:003
3719855993835,2cyclictest0-21swapper/220:06:002
3719855993834,2cyclictest0-21swapper/221:45:582
371985599380,36cyclictest0-21swapper/221:02:592
371985599380,36cyclictest0-21swapper/221:02:582
371985599380,35cyclictest0-21swapper/221:26:002
3719856993735,1cyclictest0-21swapper/320:57:003
371985699370,36cyclictest0-21swapper/319:17:583
3719855993734,2cyclictest0-21swapper/220:01:592
3719855993734,2cyclictest0-21swapper/220:01:582
3719850993729,6cyclictest3719710-21latency_hist19:10:020
3719856993634,1cyclictest0-21swapper/323:09:553
3719856993634,1cyclictest0-21swapper/322:50:593
3719856993634,1cyclictest0-21swapper/322:09:553
3719856993634,1cyclictest0-21swapper/320:48:583
3719856993634,1cyclictest0-21swapper/320:26:593
3719856993634,1cyclictest0-21swapper/300:33:593
3719856993634,1cyclictest0-21swapper/300:04:593
3719856993634,1cyclictest0-21swapper/300:04:583
3719856993631,4cyclictest3799320-21turbostat23:15:003
371985699360,35cyclictest0-21swapper/319:55:593
371985699360,1cyclictest0-21swapper/300:23:593
3719855993633,2cyclictest0-21swapper/223:54:552
3719855993633,2cyclictest0-21swapper/219:41:592
371985599360,1cyclictest0-21swapper/223:36:592
371985599360,1cyclictest0-21swapper/220:31:592
3719852993631,4cyclictest3719765-21kworker/u8:3+flush-179:019:55:231
3719852993613,22cyclictest0-21swapper/121:30:001
3719856993533,1cyclictest0-21swapper/323:02:593
3719855993532,2cyclictest0-21swapper/223:31:592
3719855993532,2cyclictest0-21swapper/220:36:592
3719855993532,2cyclictest0-21swapper/219:39:582
3719855993532,2cyclictest0-21swapper/219:28:592
3719855993532,2cyclictest0-21swapper/200:11:592
3719855993531,2cyclictest0-21swapper/219:14:552
3719856993432,1cyclictest0-21swapper/321:03:593
3719856993432,1cyclictest0-21swapper/321:03:593
3719855993431,2cyclictest0-21swapper/221:38:592
3719855993431,2cyclictest0-21swapper/221:22:592
3719852993427,3cyclictest3731143-21apt-get19:45:111
3719856993329,2cyclictest0-21swapper/320:21:003
3719855993331,1cyclictest0-21swapper/219:20:012
3719855993330,2cyclictest0-21swapper/221:13:592
3719856993230,1cyclictest0-21swapper/323:18:003
3719856993230,1cyclictest0-21swapper/321:44:583
3719856993230,1cyclictest0-21swapper/320:39:003
3719856993225,5cyclictest3788176-21turbostat22:44:553
3719855993229,2cyclictest0-21swapper/221:55:592
3719855993229,2cyclictest0-21swapper/219:50:592
3719855993229,2cyclictest0-21swapper/200:32:002
3719856993128,2cyclictest0-21swapper/321:13:583
371985699310,30cyclictest3786581-21turbostat22:35:003
3719855993129,1cyclictest0-21swapper/220:25:002
3719855993128,2cyclictest0-21swapper/223:21:592
371985299311,2cyclictest0-21swapper/122:40:131
371985699305,1cyclictest3739108-21turbostat20:10:013
3719856993028,1cyclictest3747335-21turbostat20:35:003
3719856993028,1cyclictest0-21swapper/320:15:113
3719856993028,1cyclictest0-21swapper/320:00:133
3719856993028,1cyclictest0-21swapper/320:00:123
371985699300,2cyclictest0-21swapper/322:35:113
371985699300,28cyclictest0-21swapper/300:30:013
3719855993027,2cyclictest0-21swapper/222:16:592
3719855993027,2cyclictest0-21swapper/200:17:002
371985599300,2cyclictest0-21swapper/220:10:152
4577091290,7ptp4l441ktimers/321:20:003
371985699293,2cyclictest0-21swapper/321:24:003
3719856992927,1cyclictest0-21swapper/322:15:133
3719856992927,1cyclictest0-21swapper/321:55:033
3719856992927,1cyclictest0-21swapper/300:15:023
3719856992927,1cyclictest0-21swapper/300:13:593
3719856992926,2cyclictest0-21swapper/321:30:133
371985699290,1cyclictest0-21swapper/300:35:143
3719855992927,1cyclictest0-21swapper/223:00:132
3719855992927,1cyclictest0-21swapper/222:07:592
3719855992926,2cyclictest0-21swapper/219:58:592
371985599290,27cyclictest0-21swapper/223:40:142
371985599290,27cyclictest0-21swapper/220:26:002
371985599290,27cyclictest0-21swapper/200:29:592
371985599290,1cyclictest0-21swapper/223:45:032
4577091280,6ptp4l441ktimers/323:40:013
4577091280,6ptp4l441ktimers/321:40:013
4577091280,5ptp4l441ktimers/300:10:003
4577091280,3ptp4l431rcuc/323:54:553
3719856992826,1cyclictest0-21swapper/323:25:593
3719856992826,1cyclictest0-21swapper/322:03:593
3719856992826,1cyclictest0-21swapper/319:10:123
371985699280,2cyclictest0-21swapper/323:45:023
371985699280,2cyclictest0-21swapper/323:45:023
371985699280,2cyclictest0-21swapper/320:40:133
371985699280,26cyclictest0-21swapper/321:45:133
3719855992825,2cyclictest0-21swapper/223:25:132
3719855992825,2cyclictest0-21swapper/223:12:592
3719855992825,2cyclictest0-21swapper/222:54:552
3719855992825,2cyclictest0-21swapper/221:50:132
3719855992825,2cyclictest0-21swapper/220:20:012
371985599280,2cyclictest0-21swapper/220:55:112
371985599280,26cyclictest0-21swapper/221:15:132
371985599280,26cyclictest0-21swapper/220:45:132
371985599280,26cyclictest0-21swapper/219:20:132
371985599280,26cyclictest0-21swapper/219:20:122
371985599280,26cyclictest0-21swapper/200:05:132
4577091270,6ptp4l441ktimers/322:24:553
4577091270,6ptp4l441ktimers/322:14:563
4577091270,6ptp4l441ktimers/319:55:003
4577091270,5ptp4l441ktimers/323:25:003
4577091270,5ptp4l441ktimers/323:00:013
3719856992725,1cyclictest0-21swapper/321:52:593
371985699270,26cyclictest0-21swapper/322:48:593
371985699270,26cyclictest0-21swapper/319:45:103
3719855992725,1cyclictest0-21swapper/222:04:002
3719855992724,2cyclictest0-21swapper/200:37:592
371985599270,25cyclictest0-21swapper/222:55:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-020:55:013
4577091260,6ptp4l61490irq/134-eno1-TxRx-019:35:003
3719856992623,2cyclictest0-21swapper/319:25:113
371985699260,25cyclictest0-21swapper/319:39:003
371985599260,24cyclictest0-21swapper/222:31:582
371985599260,24cyclictest0-21swapper/221:44:002
371985599260,24cyclictest0-21swapper/200:22:582
3719852992621,4cyclictest3719863-21latency_hist19:10:021
4577091250,5ptp4l61490irq/134-eno1-TxRx-019:45:013
4577091250,5ptp4l441ktimers/321:29:563
3719855992523,1cyclictest0-21swapper/222:39:592
3719855992522,2cyclictest0-21swapper/221:08:592
3719855992421,2cyclictest0-21swapper/223:56:592
3719855992421,2cyclictest0-21swapper/223:06:592
3719855992321,1cyclictest0-21swapper/222:14:592
3719855992220,1cyclictest0-21swapper/219:34:542
3719855992219,2cyclictest0-21swapper/221:30:582
3719855992118,2cyclictest0-21swapper/219:46:592
3719855992018,1cyclictest0-21swapper/220:45:002
371985599190,2cyclictest0-21swapper/222:22:592
3719855991613,2cyclictest0-21swapper/220:51:592
37198559930,2cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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