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2026-03-18 - 08:35
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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 Mar 18, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
350757199112104,6cyclictest3558645-21apt-get21:50:031
350756899109101,6cyclictest3515393-21kworker/u8:1+events_unbound20:00:000
35075719910283,13cyclictest266-21systemd-journal22:25:001
3507568999991,7cyclictest3570066-21kworker/u8:0+flush-179:023:30:240
3507571999785,10cyclictest3560451-21kworker/u8:1+flush-179:022:20:001
3507571999785,10cyclictest3560451-21kworker/u8:1+flush-179:022:20:001
3507568999782,11cyclictest266-21systemd-journal00:00:000
3507571999585,7cyclictest3510637-21latency_hist19:20:001
3507571999381,8cyclictest3587506-21kworker/u8:1+flush-179:023:25:001
3507571999281,8cyclictest3592534-21/usr/sbin/munin23:35:251
3507568999285,5cyclictest3592285-21kworker/u8:1+events_unbound00:05:240
3507568999070,13cyclictest3549131-21kworker/u8:3+events_unbound21:40:240
3507571998978,7cyclictest3545640-21latency_hist21:10:011
3507568998771,12cyclictest3593888-21apt-get23:40:000
3507571998662,21cyclictest3610118-21latency_hist00:30:011
3507568998577,5cyclictest3515393-21kworker/u8:1+flush-179:019:45:020
3507568998575,8cyclictest3537929-21kworker/u8:0+flush-179:021:00:010
3507568998575,7cyclictest3537929-21kworker/u8:0+flush-179:020:45:200
3507568998377,4cyclictest3576436-21kworker/u8:2+events_unbound22:45:010
3507568998377,4cyclictest3576436-21kworker/u8:2+events_unbound22:45:010
3507568998374,6cyclictest3570066-21kworker/u8:0+flush-179:023:00:000
3507568998374,6cyclictest3544104-21kworker/u8:2+flush-179:021:15:180
350756899830,81cyclictest3611751-21munin-run00:35:010
3507568998274,6cyclictest3528134-21latency_hist20:15:010
3507571998166,12cyclictest3526584-21kworker/u8:0+flush-179:020:15:011
3507568997869,7cyclictest3531364-21kworker/u8:1+events_unbound20:45:010
3507568997770,5cyclictest3570066-21kworker/u8:0+events_unbound22:35:230
3507571997666,7cyclictest266-21systemd-journal00:04:011
3507568997670,4cyclictest3544104-21kworker/u8:2+events_unbound21:50:020
3507568997664,5cyclictest3517059-21kworker/u8:3+events_unbound20:05:240
3507568997569,4cyclictest3521747-21kworker/u8:2+events_unbound19:55:000
3507568997469,3cyclictest3570066-21kworker/u8:0+events_unbound23:40:190
3507568997266,4cyclictest3587506-21kworker/u8:1+events_unbound23:20:240
3507568997262,7cyclictest3608534-21latency_hist00:25:010
3507568997166,4cyclictest3584378-21kworker/u8:2+events_unbound23:10:230
3507568997162,6cyclictest3507465-21kworker/u8:3+flush-179:019:20:150
3507571997061,6cyclictest266-21systemd-journal19:57:241
3507568997064,4cyclictest3560508-21kworker/u8:3+flush-179:022:05:000
3507568997063,5cyclictest3592285-21kworker/u8:1+flush-179:000:00:240
3507568997061,7cyclictest3531364-21kworker/u8:1+flush-179:020:35:200
3507568997058,5cyclictest3544104-21kworker/u8:2+events_unbound21:50:230
3507568996963,5cyclictest3537929-21kworker/u8:0+flush-179:021:00:240
3507568996963,5cyclictest3537929-21kworker/u8:0+flush-179:021:00:240
3507571996858,8cyclictest3613303-21apt-get00:36:341
3507568996860,6cyclictest3587519-21latency_hist23:20:010
3507571996751,14cyclictest0-21swapper/122:33:001
3507568996761,4cyclictest3515393-21kworker/u8:1+flush-179:019:45:200
3507568996756,8cyclictest266-21systemd-journal20:20:000
3507568996660,5cyclictest3560451-21kworker/u8:1+flush-179:022:30:240
3507568996657,7cyclictest266-21systemd-journal22:00:000
3507568996561,3cyclictest3537929-21kworker/u8:0+flush-179:020:50:240
3507568996559,4cyclictest3566881-21kworker/u8:2+flush-179:022:25:200
3507571996354,6cyclictest266-21systemd-journal22:57:231
3507568996257,4cyclictest3507465-21kworker/u8:3+flush-179:019:10:200
3507568996253,6cyclictest3540907-21kworker/u8:1+flush-179:021:05:190
3507573996158,2cyclictest0-21swapper/200:15:592
3507568996156,4cyclictest3560451-21kworker/u8:1+flush-179:022:20:210
3507571995948,8cyclictest3531364-21kworker/u8:1+flush-179:020:40:131
3507568995953,4cyclictest3531364-21kworker/u8:1+flush-179:020:30:150
3507568995948,8cyclictest3576652-21apt-get22:45:100
3507571995820,20cyclictest0-21swapper/122:10:211
3507571995745,10cyclictest3507996-21diskstats19:10:141
3507568995752,3cyclictest3597367-21kworker/u8:3+events_unbound23:55:010
3507568995750,5cyclictest3604449-21kworker/u8:0+flush-179:000:35:200
3507571995645,7cyclictest3544104-21kworker/u8:2+events_unbound22:00:001
3507568995651,4cyclictest3570066-21kworker/u8:0+flush-179:022:50:210
3507568995651,4cyclictest3549131-21kworker/u8:3+events_unbound21:30:140
3507568995650,5cyclictest3524931-21kworker/u8:4+flush-179:020:25:260
3507568995649,5cyclictest3578015-21kworker/u8:3+flush-179:023:00:210
3507568995645,9cyclictest3563925-21apt-get22:05:140
3507568995549,5cyclictest3529156-21kworker/u8:2+events_unbound20:20:230
3507568995548,5cyclictest3507465-21kworker/u8:3+events_unbound19:15:240
3507577995452,1cyclictest0-21swapper/322:24:593
3507571995448,4cyclictest3594360-21apt-key23:40:011
3507571995339,7cyclictest3540907-21kworker/u8:1+events_unbound21:15:001
3507571995242,8cyclictest3590965-21apt-get23:30:121
3507571995237,13cyclictest3514077-21kworker/u8:0+flush-179:019:40:261
3507571995212,26cyclictest3589429-21awk23:25:121
3507577995148,2cyclictest0-21swapper/321:42:593
3507571995135,15cyclictest0-21swapper/123:08:591
3507571995135,15cyclictest0-21swapper/123:08:591
3507568995144,5cyclictest3596053-21kworker/u8:2+events_unbound00:10:220
3507568995144,5cyclictest3570066-21kworker/u8:0+flush-179:023:30:010
3507571995040,7cyclictest266-21systemd-journal22:40:011
3507571995040,7cyclictest266-21systemd-journal22:40:011
3507568995045,4cyclictest3560451-21kworker/u8:1+flush-179:022:15:140
3507568995045,4cyclictest3560451-21kworker/u8:1+flush-179:022:15:140
3507568995045,4cyclictest3540907-21kworker/u8:1+flush-179:021:10:170
3507568995043,4cyclictest3507465-21kworker/u8:3+flush-179:019:25:210
3507568995043,4cyclictest3507465-21kworker/u8:3+flush-179:019:25:210
3507571994942,5cyclictest3563667-21latency_hist22:05:011
3507571994934,14cyclictest0-21swapper/119:49:581
3507568994945,3cyclictest3596053-21kworker/u8:2+events_unbound00:15:240
4577091480,13ptp4l441ktimers/319:10:003
3507571994843,4cyclictest3596001-21apt-get23:45:121
3507571994842,4cyclictest3549131-21kworker/u8:3+events_unbound21:30:231
3507571994842,4cyclictest1-21systemd21:45:011
3507571994841,5cyclictest3507465-21kworker/u8:3+events_unbound19:30:011
3507571994841,5cyclictest3507465-21kworker/u8:3+events_unbound19:30:001
3507571994840,5cyclictest3521747-21kworker/u8:2+flush-179:020:00:141
3507571994824,21cyclictest510-21rs:main1
3507568994842,5cyclictest3549131-21kworker/u8:3+flush-179:021:25:200
3507571994728,17cyclictest0-21swapper/122:40:001
3507568994741,5cyclictest3544104-21kworker/u8:2+flush-179:021:20:150
3507568994740,4cyclictest3507429-21latency_hist19:10:020
3507571994626,17cyclictest0-21swapper/122:25:121
350757199461,2cyclictest3557300-21apt-get21:45:131
350757199460,43cyclictest3605595-21apt-get00:15:131
3507568994641,4cyclictest3549131-21kworker/u8:3+flush-179:021:35:160
3507571994536,7cyclictest3596053-21kworker/u8:2+flush-179:000:10:251
350757199450,43cyclictest714-21Xorg21:21:001
3507568994540,4cyclictest3596053-21kworker/u8:2+flush-179:023:45:220
3507571994424,18cyclictest714-21Xorg19:36:591
3507568994434,4cyclictest3490421-21kworker/u8:2+events_unbound19:35:120
3507577994340,2cyclictest0-21swapper/323:44:543
3507571994324,17cyclictest3521806-21systemd-run19:55:001
350757199430,5cyclictest714-21Xorg20:56:591
3507568994338,4cyclictest3581207-21kworker/u8:1+flush-179:023:05:210
3507568994338,4cyclictest3581207-21kworker/u8:1+flush-179:023:05:210
3507573994239,2cyclictest0-21swapper/223:25:592
3507571994233,7cyclictest3605371-21kworker/u8:3+flush-179:000:35:001
3507571994227,12cyclictest0-21swapper/121:28:591
350757199421,37cyclictest3529999-21apt-get20:20:121
350757199420,3cyclictest714-21Xorg21:00:591
350757199420,3cyclictest714-21Xorg21:00:581
3507568994237,4cyclictest3560451-21kworker/u8:1+flush-179:022:10:160
3507573994138,2cyclictest0-21swapper/222:57:592
3507573994138,2cyclictest0-21swapper/222:38:592
3507571994124,16cyclictest0-21swapper/121:20:001
350757199410,2cyclictest714-21Xorg22:09:591
350757799400,38cyclictest3537700-21turbostat20:45:003
3507573994037,2cyclictest0-21swapper/219:34:552
350757799390,4cyclictest3553861-21turbostat21:35:003
3507573993936,2cyclictest0-21swapper/220:51:592
3507571993936,2cyclictest714-21Xorg20:19:591
3507571993930,5cyclictest0-21swapper/120:33:591
350757199390,37cyclictest714-21Xorg20:07:581
3507568993934,4cyclictest3604449-21kworker/u8:0+events_unbound00:25:130
3507573993834,2cyclictest0-21swapper/222:53:592
350757399380,35cyclictest0-21swapper/222:31:592
350757399380,35cyclictest0-21swapper/222:11:002
350757399380,35cyclictest0-21swapper/219:11:582
3507571993835,2cyclictest0-21swapper/120:38:001
3507571993828,6cyclictest0-21swapper/119:23:591
350757199380,37cyclictest0-21swapper/121:35:591
3507577993735,1cyclictest0-21swapper/320:18:583
350757799370,36cyclictest0-21swapper/323:21:593
350757399370,35cyclictest0-21swapper/223:46:592
350757399370,34cyclictest0-21swapper/221:40:002
3507571993727,6cyclictest0-21swapper/119:31:591
350757199371,35cyclictest3587535-21perf23:20:001
3507568993734,2cyclictest714-21Xorg19:33:590
3507577993633,2cyclictest0-21swapper/319:36:583
350757799360,35cyclictest0-21swapper/322:04:553
350757799360,35cyclictest0-21swapper/320:05:593
350757799360,1cyclictest0-21swapper/323:28:593
3507573993634,1cyclictest0-21swapper/223:44:592
3507573993634,1cyclictest0-21swapper/223:25:002
3507573993633,2cyclictest0-21swapper/223:18:592
350757399360,1cyclictest0-21swapper/220:47:592
3507577993533,1cyclictest0-21swapper/322:47:593
3507577993533,1cyclictest0-21swapper/321:36:593
3507577993533,1cyclictest0-21swapper/300:20:593
3507573993532,2cyclictest0-21swapper/219:56:002
350757199354,28cyclictest0-21swapper/122:50:111
3507571993532,2cyclictest0-21swapper/120:48:581
3507571993526,7cyclictest3531585-21apt-get20:25:121
3507571993518,15cyclictest0-21swapper/120:50:241
350757199351,29cyclictest0-21swapper/123:00:141
3507577993431,2cyclictest0-21swapper/319:31:003
3507573993432,1cyclictest0-21swapper/221:44:582
3507573993431,2cyclictest0-21swapper/221:27:592
3507573993431,2cyclictest0-21swapper/220:14:002
3507571993326,5cyclictest3577494-21phc2sys-jitter22:45:211
3507571993312,18cyclictest3586131-21latency_hist23:15:011
3507577993230,1cyclictest0-21swapper/323:17:593
3507577993230,1cyclictest0-21swapper/319:18:003
3507577993229,2cyclictest0-21swapper/323:54:003
3507577993229,2cyclictest0-21swapper/323:09:553
3507577993229,2cyclictest0-21swapper/323:09:553
3507577993227,4cyclictest3573211-21turbostat22:35:003
3507577993225,5cyclictest3536106-21turbostat20:40:003
3507573993229,2cyclictest0-21swapper/220:27:002
350757199328,23cyclictest3599664-21cat23:55:161
350757199320,4cyclictest57850irq/129-enp2s0-TxRx-023:50:111
3507577993129,1cyclictest0-21swapper/323:40:003
3507577993129,1cyclictest0-21swapper/323:03:593
3507577993129,1cyclictest0-21swapper/322:19:593
3507577993129,1cyclictest0-21swapper/322:19:593
3507577993129,1cyclictest0-21swapper/321:13:003
3507577993129,1cyclictest0-21swapper/321:00:003
3507577993129,1cyclictest0-21swapper/320:33:583
3507577993128,2cyclictest0-21swapper/322:59:593
3507577993128,2cyclictest0-21swapper/321:27:593
3507577993128,2cyclictest0-21swapper/321:23:593
4577091300,7ptp4l441ktimers/320:55:003
350757799300,28cyclictest0-21swapper/323:55:123
350757799300,27cyclictest0-21swapper/320:45:113
3507573993027,2cyclictest0-21swapper/221:46:592
3507573993027,2cyclictest0-21swapper/219:26:592
3507573993027,2cyclictest0-21swapper/219:26:582
350757399300,28cyclictest0-21swapper/200:05:112
3507568993024,4cyclictest3523411-21kworker/u8:0+flush-179:020:00:160
4577091290,6ptp4l441ktimers/300:04:593
3507577992927,1cyclictest0-21swapper/321:19:593
3507577992927,1cyclictest0-21swapper/320:25:143
3507577992926,2cyclictest0-21swapper/319:25:133
3507577992926,2cyclictest0-21swapper/319:25:133
350757799290,28cyclictest0-21swapper/320:00:133
350757799290,27cyclictest0-21swapper/321:50:023
350757799290,27cyclictest0-21swapper/319:40:133
3507573992926,2cyclictest0-21swapper/221:56:592
3507573992926,2cyclictest0-21swapper/219:50:132
3507573992925,2cyclictest0-21swapper/223:14:552
350757399290,28cyclictest0-21swapper/221:00:142
350757399290,28cyclictest0-21swapper/221:00:142
350757399290,27cyclictest0-21swapper/222:40:132
350757399290,27cyclictest0-21swapper/222:40:132
350757399290,27cyclictest0-21swapper/222:25:132
350757399290,27cyclictest0-21swapper/222:05:142
350757399290,27cyclictest0-21swapper/221:10:022
350757199298,19cyclictest0-21swapper/100:05:141
4577091280,7ptp4l61490irq/134-eno1-TxRx-023:50:013
4577091280,7ptp4l441ktimers/322:00:003
4577091280,7ptp4l441ktimers/320:25:013
4577091280,6ptp4l441ktimers/321:50:023
3507577992826,1cyclictest0-21swapper/323:14:593
3507577992826,1cyclictest0-21swapper/319:53:583
3507577992826,1cyclictest0-21swapper/319:45:123
3507577992826,1cyclictest0-21swapper/300:10:113
350757799280,27cyclictest0-21swapper/300:30:153
350757799280,26cyclictest0-21swapper/322:10:143
350757799280,26cyclictest0-21swapper/321:05:133
350757799280,1cyclictest0-21swapper/322:08:003
3507573992825,2cyclictest0-21swapper/223:35:132
3507573992825,2cyclictest0-21swapper/221:50:122
350757399280,26cyclictest0-21swapper/220:31:002
4577091270,7ptp4l61490irq/134-eno1-TxRx-022:45:013
4577091270,7ptp4l61490irq/134-eno1-TxRx-022:45:013
4577091270,6ptp4l441ktimers/321:05:013
4577091270,6ptp4l441ktimers/321:05:003
3507577992725,1cyclictest0-21swapper/322:25:593
3507577992725,1cyclictest0-21swapper/319:24:583
3507577992724,2cyclictest0-21swapper/320:10:123
350757799270,26cyclictest0-21swapper/323:30:133
3507573992725,1cyclictest0-21swapper/223:10:002
3507573992725,1cyclictest0-21swapper/223:10:002
3507573992725,1cyclictest0-21swapper/222:20:002
3507573992725,1cyclictest0-21swapper/222:20:002
3507573992724,2cyclictest0-21swapper/200:25:112
3507573992724,2cyclictest0-21swapper/200:13:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-022:40:003
4577091260,6ptp4l441ktimers/319:15:003
4577091260,5ptp4l61490irq/134-eno1-TxRx-000:19:563
350757799260,1cyclictest0-21swapper/322:51:003
3507573992623,2cyclictest0-21swapper/221:33:592
3507573992623,2cyclictest0-21swapper/219:23:592
3507573992623,2cyclictest0-21swapper/200:32:592
3507573992622,2cyclictest0-21swapper/223:34:562
350757399260,24cyclictest0-21swapper/223:55:592
350757399260,24cyclictest0-21swapper/220:21:582
350757399260,24cyclictest0-21swapper/219:48:592
350757399260,24cyclictest0-21swapper/200:20:142
350757399260,24cyclictest0-21swapper/200:00:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-000:39:553
4577091250,5ptp4l441ktimers/300:29:563
4577091250,5ptp4l441ktimers/300:09:553
4577091250,4ptp4l441ktimers/319:59:553
3507573992523,1cyclictest0-21swapper/222:49:592
3507573992521,2cyclictest0-21swapper/221:07:592
350757199250,8cyclictest3507636-21cat19:10:021
3507573992421,2cyclictest0-21swapper/220:35:132
3507573992321,1cyclictest0-21swapper/221:20:592
3507573992321,1cyclictest0-21swapper/219:44:592
3507573992219,2cyclictest0-21swapper/222:20:592
3507573992119,1cyclictest0-21swapper/220:17:582
3507573992018,1cyclictest0-21swapper/222:05:002
3507573992018,1cyclictest0-21swapper/220:57:592
3507573991814,2cyclictest0-21swapper/223:50:592
3507573991714,2cyclictest0-21swapper/219:15:132
3507573991613,2cyclictest0-21swapper/223:02:592
3507573991311,1cyclictest0-21swapper/221:20:002
350757399129,2cyclictest0-21swapper/220:03:582
350757399129,2cyclictest0-21swapper/200:36:002
35075739986,1cyclictest0-21swapper/220:07:592
35075739980,7cyclictest0-21swapper/220:44:592
35075739960,1cyclictest0-21swapper/219:35:192
35075739930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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