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2026-04-08 - 11:49
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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 Wed Apr 08, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27326889911798,15cyclictest266-21systemd-journal00:04:000
27326889910999,6cyclictest2748863-21kworker/u8:0+events_unbound20:15:010
2732694999790,5cyclictest2773011-21kworker/u8:0+events_unbound21:15:021
2732688999784,9cyclictest2768554-21kworker/u8:2+flush-179:022:45:010
2732694999683,10cyclictest266-21systemd-journal20:45:001
2732694999589,4cyclictest2785181-21kworker/u8:4+flush-179:021:55:191
2732688999586,6cyclictest2789961-21/usr/sbin/munin22:05:230
2732688999585,7cyclictest2781513-21latency_hist21:40:010
2732694999285,6cyclictest2748863-21kworker/u8:0+flush-179:020:30:211
2732688999182,6cyclictest2789725-21latency_hist22:05:010
2732694999081,7cyclictest266-21systemd-journal20:10:001
2732688998980,6cyclictest2765068-21latency_hist20:50:000
2732694998880,7cyclictest2820257-21kworker/u8:3+flush-179:000:30:191
2732694998680,5cyclictest2788394-21kworker/u8:0+events_unbound22:15:191
2732694998672,6cyclictest2801162-21kworker/u8:1+flush-179:023:10:201
2732694998577,5cyclictest2760272-21kworker/u8:3+events_unbound20:45:191
2732694998476,5cyclictest2799496-21kworker/u8:3+events_unbound23:10:011
2732688998477,4cyclictest2820257-21kworker/u8:3+flush-179:000:00:000
2732694998377,4cyclictest2768554-21kworker/u8:2+flush-179:021:40:211
2732694998376,5cyclictest2782534-21kworker/u8:1+flush-179:021:50:181
2732694998375,5cyclictest2818601-21kworker/u8:2+events_unbound23:50:221
2732688998374,6cyclictest2804298-21latency_hist22:50:010
2732694998276,4cyclictest2818601-21kworker/u8:2+events_unbound23:40:241
2732694998275,5cyclictest2829856-21kworker/u8:2+flush-179:000:25:221
2732694998275,5cyclictest2748863-21kworker/u8:0+flush-179:020:00:241
2732694998175,4cyclictest2721957-21kworker/u8:2+flush-179:019:20:201
2732694998065,11cyclictest2792894-21latency_hist22:15:011
2732688998070,8cyclictest266-21systemd-journal22:15:010
2732694997973,5cyclictest2799496-21kworker/u8:3+events_unbound23:20:241
2732694997973,4cyclictest2721957-21kworker/u8:2+events_unbound19:45:001
2732694997866,9cyclictest266-21systemd-journal21:30:011
2732694997865,5cyclictest2768554-21kworker/u8:2+events_unbound21:45:241
2732694997865,5cyclictest2768554-21kworker/u8:2+events_unbound21:45:241
2732688997869,6cyclictest2812246-21latency_hist23:15:010
2732694997768,7cyclictest2773011-21kworker/u8:0+events_unbound21:25:001
2732694997765,9cyclictest2778604-21diskstats21:30:151
2732688997767,8cyclictest266-21systemd-journal22:25:000
2732694997671,3cyclictest2721957-21kworker/u8:2+flush-179:019:50:241
2732694997671,3cyclictest2721957-21kworker/u8:2+flush-179:019:50:241
2732694997670,4cyclictest2768554-21kworker/u8:2+events_unbound22:35:221
2732694997670,4cyclictest2768554-21kworker/u8:2+events_unbound22:35:221
2732694997669,5cyclictest2750483-21kworker/u8:2+events_unbound20:10:251
2732694997669,5cyclictest2737540-21kworker/u8:3+events_unbound19:35:021
2732694997668,5cyclictest2799496-21kworker/u8:3+flush-179:023:00:151
2732694997668,5cyclictest2799496-21kworker/u8:3+flush-179:023:00:151
2732694997667,6cyclictest2762135-21kworker/u8:1+events_unbound21:00:001
2732694997665,7cyclictest2826636-21kworker/u8:1+flush-179:000:00:151
2732694997568,5cyclictest2804288-21kworker/u8:0+flush-179:022:50:251
2732694997567,6cyclictest2799496-21kworker/u8:3+flush-179:022:40:261
2732688997566,7cyclictest2762135-21kworker/u8:1+flush-179:021:00:010
2732688997564,9cyclictest266-21systemd-journal21:20:000
2732694997467,5cyclictest2801162-21kworker/u8:1+events_unbound23:15:231
2732694997467,5cyclictest2788394-21kworker/u8:0+events_unbound22:00:191
2732694997465,7cyclictest2820257-21kworker/u8:3+flush-179:000:35:211
2732694997364,6cyclictest2762135-21kworker/u8:1+events_unbound20:50:231
2732694997264,5cyclictest2788394-21kworker/u8:0+events_unbound22:25:171
2732694997264,5cyclictest2752316-21kworker/u8:1+events_unbound20:25:161
2732688997063,5cyclictest2805883-21latency_hist22:55:010
2732688997061,6cyclictest2768554-21kworker/u8:2+flush-179:021:35:010
2732694996963,4cyclictest2829856-21kworker/u8:2+flush-179:000:20:191
2732694996961,6cyclictest2768554-21kworker/u8:2+events_unbound21:35:191
2732694996861,6cyclictest2727733-21kworker/u8:1+events_unbound19:10:031
2732694996860,6cyclictest2721957-21kworker/u8:2+flush-179:019:45:201
2732688996856,9cyclictest2831398-21latency_hist00:15:010
2732694996762,4cyclictest2826636-21kworker/u8:1+flush-179:000:10:231
2732694996662,3cyclictest2820257-21kworker/u8:3+events_unbound00:05:211
2732694996661,4cyclictest2788394-21kworker/u8:0+flush-179:022:05:261
2732694996660,4cyclictest2768554-21kworker/u8:2+events_unbound22:30:201
2732694996560,4cyclictest2748863-21kworker/u8:0+flush-179:020:15:241
2732694996559,4cyclictest2799496-21kworker/u8:3+events_unbound22:45:191
2732688996555,8cyclictest2768554-21kworker/u8:2+flush-179:021:05:220
2732688996551,12cyclictest266-21systemd-journal23:55:000
2732694996457,5cyclictest2818591-21kworker/u8:1+flush-179:023:35:161
2732694996356,5cyclictest2765329-21kworker/u8:0+flush-179:021:00:231
2732688996356,5cyclictest2820257-21kworker/u8:3+flush-179:000:40:000
2732688996356,5cyclictest2750494-21latency_hist20:05:010
2732688996350,11cyclictest2732442-21latency_hist19:10:020
2732688996350,10cyclictest266-21systemd-journal19:20:010
2732688996256,4cyclictest2818591-21kworker/u8:1+events_unbound23:45:020
2732688996253,7cyclictest2737540-21kworker/u8:3+events_unbound19:35:010
2732688996253,7cyclictest266-21systemd-journal22:40:010
2732688996253,7cyclictest266-21systemd-journal22:40:010
2732688996253,6cyclictest2737540-21kworker/u8:3+flush-179:019:35:220
2732694996155,4cyclictest2769876-21kworker/u8:3+flush-179:021:10:241
2732694996054,4cyclictest2815677-21kworker/u8:0+flush-179:023:25:211
2732694996051,7cyclictest2730988-21kworker/u8:0+events_unbound19:30:221
2732688996054,4cyclictest2721957-21kworker/u8:2+flush-179:019:25:200
2732688996053,5cyclictest2748863-21kworker/u8:0+flush-179:020:30:210
2732694995752,4cyclictest2820257-21kworker/u8:3+events_unbound00:15:191
2732688995740,15cyclictest266-21systemd-journal22:33:430
2732694995651,4cyclictest2760272-21kworker/u8:3+flush-179:020:35:221
2732694995648,6cyclictest2820257-21kworker/u8:3+events_unbound23:45:221
2732688995647,6cyclictest2762135-21kworker/u8:1+flush-179:020:40:210
2732694995544,9cyclictest2770105-21apt-get21:05:131
2732688995450,3cyclictest2721957-21kworker/u8:2+flush-179:019:50:140
2732688995450,3cyclictest2721957-21kworker/u8:2+flush-179:019:50:140
2732694995349,3cyclictest2721957-21kworker/u8:2+events_unbound19:15:251
2732688995346,5cyclictest2747110-21kworker/u8:1+events_unbound20:00:000
2732694995247,4cyclictest2820257-21kworker/u8:3+events_unbound23:55:161
2732688995246,5cyclictest2820257-21kworker/u8:3+events_unbound00:15:240
2732688995244,6cyclictest2799496-21kworker/u8:3+flush-179:022:55:210
2732688995244,6cyclictest2769876-21kworker/u8:3+events_unbound21:10:230
2732688995143,6cyclictest2820257-21kworker/u8:3+events_unbound23:45:230
2732688995044,4cyclictest2820257-21kworker/u8:3+events_unbound00:05:250
2732688995042,6cyclictest2748863-21kworker/u8:0+flush-179:020:05:220
2732688994940,6cyclictest2721957-21kworker/u8:2+flush-179:019:40:160
4577091480,13ptp4l61490irq/134-eno1-TxRx-019:10:003
2732688994845,2cyclictest2788394-21kworker/u8:0+events_unbound22:25:210
2732688994841,5cyclictest2768554-21kworker/u8:2+events_unbound21:45:230
2732688994841,5cyclictest2768554-21kworker/u8:2+events_unbound21:45:220
2732688994840,7cyclictest2765329-21kworker/u8:0+events_unbound21:00:230
2732688994839,6cyclictest2829856-21kworker/u8:2+flush-179:000:20:190
2732700994741,5cyclictest2766667-21turbostat20:55:003
2732694994641,4cyclictest2793410-21kworker/u8:3+events_unbound22:20:191
2732688994640,4cyclictest2815677-21kworker/u8:0+events_unbound23:30:000
2732694994541,3cyclictest2721957-21kworker/u8:2+flush-179:019:55:201
2732688994539,5cyclictest2788394-21kworker/u8:0+flush-179:022:15:140
2732688994536,7cyclictest2748863-21kworker/u8:0+events_unbound20:15:250
2732694994440,3cyclictest2721957-21kworker/u8:2+flush-179:019:25:221
2732694994439,4cyclictest2752316-21kworker/u8:1+events_unbound20:23:431
2732688994437,5cyclictest2818601-21kworker/u8:2+flush-179:023:34:590
2732688994435,7cyclictest2752316-21kworker/u8:1+events_unbound20:20:260
2732688994336,5cyclictest2765329-21kworker/u8:0+events_unbound20:55:000
2732688994334,7cyclictest2776729-21apt-get21:25:110
2732688994235,6cyclictest2732450-21turbostat19:14:540
2732688994235,5cyclictest2752316-21kworker/u8:1+flush-179:020:25:220
2732688994233,8cyclictest2809315-21kworker/u8:0+flush-179:023:05:170
2732688994136,4cyclictest2760272-21kworker/u8:3+flush-179:020:35:230
273268899401,37cyclictest714-21Xorg21:50:590
273270099390,38cyclictest2737514-21turbostat19:25:013
273269699390,36cyclictest0-21swapper/200:16:592
2732694993936,2cyclictest714-21Xorg23:30:591
2732688993935,3cyclictest2820257-21kworker/u8:3+flush-179:000:35:010
273268899390,38cyclictest2834857-21turbostat00:29:560
2732700993832,5cyclictest2807481-21turbostat23:00:003
2732696993834,2cyclictest0-21swapper/200:34:002
2732696993834,2cyclictest0-21swapper/200:08:002
273269699380,36cyclictest0-21swapper/223:58:592
273269699380,36cyclictest0-21swapper/219:50:592
273269699380,36cyclictest0-21swapper/219:50:582
273269699380,35cyclictest0-21swapper/223:00:002
2732688993833,4cyclictest2818591-21kworker/u8:1+flush-179:023:35:220
2732700993735,1cyclictest0-21swapper/319:59:593
273270099370,36cyclictest0-21swapper/323:27:593
273270099370,36cyclictest0-21swapper/300:11:593
273269699370,35cyclictest0-21swapper/219:23:592
2732694993726,9cyclictest266-21systemd-journal22:59:591
2732688993734,2cyclictest714-21Xorg23:04:590
2732688993734,2cyclictest714-21Xorg23:04:580
2732700993633,2cyclictest0-21swapper/323:58:593
273270099360,35cyclictest0-21swapper/300:01:593
273270099360,1cyclictest0-21swapper/300:35:003
2732700993533,1cyclictest0-21swapper/319:50:593
2732700993533,1cyclictest0-21swapper/319:50:593
2732700993533,1cyclictest0-21swapper/300:16:593
273270099350,1cyclictest0-21swapper/319:44:593
2732696993531,2cyclictest0-21swapper/219:33:582
2732688993528,6cyclictest2768554-21kworker/u8:2+flush-179:021:20:160
2732688993525,9cyclictest2781767-21apt-get21:40:110
2732700993431,2cyclictest0-21swapper/321:07:593
2732696993431,2cyclictest0-21swapper/219:36:582
2732696993430,2cyclictest0-21swapper/222:05:592
2732700993331,1cyclictest0-21swapper/322:18:593
2732700993331,1cyclictest0-21swapper/320:25:593
2732700993331,1cyclictest0-21swapper/319:39:553
2732700993331,1cyclictest0-21swapper/319:13:593
2732700993330,2cyclictest0-21swapper/323:49:583
2732696993330,1cyclictest0-21swapper/222:50:002
2732696993329,2cyclictest0-21swapper/200:38:002
273269699330,31cyclictest0-21swapper/221:46:592
273269699330,31cyclictest0-21swapper/221:46:592
2732688993328,4cyclictest714-21Xorg23:18:590
273268899331,30cyclictest0-21swapper/019:20:130
4577091320,4ptp4l441ktimers/323:25:013
2732700993230,1cyclictest0-21swapper/323:01:593
2732700993230,1cyclictest0-21swapper/323:01:583
2732700993230,1cyclictest0-21swapper/320:44:003
2732700993230,1cyclictest0-21swapper/320:14:553
2732700993230,1cyclictest0-21swapper/300:24:543
2732696993230,1cyclictest0-21swapper/219:45:012
2732696993229,2cyclictest0-21swapper/221:40:592
2732696993229,2cyclictest0-21swapper/220:20:582
2732696993229,2cyclictest0-21swapper/200:14:552
2732696993228,2cyclictest0-21swapper/223:20:002
2732696993228,2cyclictest0-21swapper/221:34:592
2732700993129,1cyclictest0-21swapper/300:07:593
273270099310,30cyclictest0-21swapper/320:19:583
2732696993127,2cyclictest0-21swapper/223:29:562
2732688993126,4cyclictest2721957-21kworker/u8:2+flush-179:019:45:150
4577091300,5ptp4l441ktimers/323:09:563
2732700993027,2cyclictest0-21swapper/321:47:003
2732700993027,2cyclictest0-21swapper/321:46:593
2732700993024,4cyclictest2804308-21turbostat22:50:003
2732700993022,6cyclictest2792900-21turbostat22:15:003
2732696993028,1cyclictest0-21swapper/220:19:592
2732696993027,2cyclictest0-21swapper/222:15:022
2732696993027,2cyclictest0-21swapper/221:35:032
2732696993027,2cyclictest0-21swapper/200:05:012
2732696993026,2cyclictest0-21swapper/223:21:592
2732696993026,2cyclictest0-21swapper/200:22:002
273269699300,28cyclictest0-21swapper/220:35:122
2732700992927,1cyclictest0-21swapper/319:45:123
2732700992926,2cyclictest0-21swapper/322:30:133
2732700992926,2cyclictest0-21swapper/321:00:123
273270099290,27cyclictest0-21swapper/323:40:133
273270099290,27cyclictest0-21swapper/321:10:133
273270099290,27cyclictest0-21swapper/320:20:143
273270099290,1cyclictest0-21swapper/321:50:033
2732696992927,1cyclictest0-21swapper/222:15:002
2732696992926,2cyclictest0-21swapper/221:00:132
2732696992926,2cyclictest0-21swapper/220:57:592
2732696992925,2cyclictest0-21swapper/222:30:122
273269699290,27cyclictest0-21swapper/223:50:122
273269699290,27cyclictest0-21swapper/223:40:132
273269699290,27cyclictest0-21swapper/222:29:592
273269699290,27cyclictest0-21swapper/221:50:032
273269699290,27cyclictest0-21swapper/221:20:122
273269699290,27cyclictest0-21swapper/221:10:132
273269699290,27cyclictest0-21swapper/219:45:122
273269699290,27cyclictest0-21swapper/219:25:142
2732688992923,5cyclictest2814821-21needreboot23:20:200
4577091280,6ptp4l441ktimers/320:35:003
2732700992826,1cyclictest0-21swapper/322:35:133
2732700992826,1cyclictest0-21swapper/322:35:133
2732700992826,1cyclictest0-21swapper/321:20:133
2732700992826,1cyclictest0-21swapper/321:15:113
2732700992826,1cyclictest0-21swapper/320:58:003
2732700992826,1cyclictest0-21swapper/319:33:593
273270099280,27cyclictest0-21swapper/321:35:023
273270099280,27cyclictest0-21swapper/321:30:133
273270099280,27cyclictest0-21swapper/320:35:133
273270099280,26cyclictest0-21swapper/323:50:133
2732696992825,2cyclictest0-21swapper/223:38:592
2732696992825,2cyclictest0-21swapper/222:01:592
273269699280,2cyclictest0-21swapper/221:15:112
273269699280,26cyclictest0-21swapper/223:45:132
273269699280,26cyclictest0-21swapper/223:14:592
273269699280,26cyclictest0-21swapper/219:18:592
2732688992823,3cyclictest0-21swapper/022:00:000
4577091270,6ptp4l61490irq/134-eno1-TxRx-023:20:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-023:15:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-022:10:003
4577091270,6ptp4l441ktimers/323:34:593
4577091270,6ptp4l441ktimers/320:05:013
4577091270,5ptp4l441ktimers/322:55:013
2732700992725,1cyclictest0-21swapper/319:25:133
2732700992724,2cyclictest0-21swapper/321:40:593
2732700992724,2cyclictest0-21swapper/319:19:003
2732696992723,2cyclictest0-21swapper/220:05:582
273269699270,1cyclictest0-21swapper/222:35:132
273269699270,1cyclictest0-21swapper/222:35:132
4577091260,6ptp4l61490irq/134-eno1-TxRx-021:30:013
4577091260,6ptp4l61490irq/134-eno1-TxRx-020:09:563
4577091260,5ptp4l61490irq/134-eno1-TxRx-022:44:563
4577091260,4ptp4l61490irq/134-eno1-TxRx-000:30:013
2732700992623,2cyclictest0-21swapper/322:29:593
273270099260,1cyclictest0-21swapper/300:37:593
2732696992623,1cyclictest0-21swapper/220:41:592
273269699260,2cyclictest0-21swapper/200:27:582
273269699260,24cyclictest0-21swapper/223:04:592
273269699260,24cyclictest0-21swapper/223:04:582
2732694992622,2cyclictest2732824-21apt-key19:10:011
4577091250,5ptp4l441ktimers/322:25:003
4577091250,4ptp4l441ktimers/322:04:553
2732696992523,1cyclictest0-21swapper/222:44:592
2732696992521,2cyclictest0-21swapper/223:05:592
2732696992521,2cyclictest0-21swapper/219:59:562
273269699250,2cyclictest0-21swapper/219:10:592
4577091240,5ptp4l441ktimers/323:39:553
4577091240,5ptp4l441ktimers/322:00:003
2732696992421,2cyclictest0-21swapper/220:01:592
2732696992421,1cyclictest0-21swapper/221:59:592
2732696992320,2cyclictest0-21swapper/220:28:002
2732696992320,2cyclictest0-21swapper/220:11:002
2732696992118,2cyclictest0-21swapper/220:30:592
2732696992017,2cyclictest0-21swapper/222:23:002
2732696992017,2cyclictest0-21swapper/220:50:592
2732696991815,2cyclictest0-21swapper/220:47:592
2732696991714,2cyclictest0-21swapper/222:52:592
4577091150,3ptp4l441ktimers/320:45:203
2732696991513,1cyclictest0-21swapper/221:09:592
2732696991512,2cyclictest0-21swapper/223:33:592
2732696991411,2cyclictest0-21swapper/221:25:592
27326969930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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