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2026-04-11 - 06:26
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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 Sat Apr 11, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26191369910392,8cyclictest266-21systemd-journal00:04:001
26191369910191,7cyclictest2651411-21latency_hist20:50:011
2619136999080,7cyclictest2670767-21latency_hist21:50:011
2619136998879,6cyclictest2667592-21latency_hist21:40:001
2619134998879,7cyclictest2661211-21latency_hist21:20:010
2619134998874,10cyclictest2666023-21kworker/u8:3+flush-179:022:15:160
2619134998874,10cyclictest2666023-21kworker/u8:3+flush-179:022:15:150
2619134998675,8cyclictest266-21systemd-journal22:00:000
2619136998574,8cyclictest2712456-40mandb00:00:021
2619134998579,5cyclictest2690114-21kworker/u8:1+events_unbound22:55:010
2619134998578,5cyclictest2688542-21latency_hist22:45:000
2619136998374,7cyclictest2672352-21latency_hist21:55:011
2619134998167,5cyclictest2698068-21kworker/u8:0+events_unbound23:35:130
2619134998166,6cyclictest2599606-21kworker/u8:0+events_unbound19:35:250
2619134998074,4cyclictest2690114-21kworker/u8:1+flush-179:023:00:140
2619134997974,4cyclictest2599606-21kworker/u8:0+events_unbound19:40:240
2619134997771,4cyclictest2599606-21kworker/u8:0+events_unbound19:55:150
2619134997670,5cyclictest2658025-21kworker/u8:1+flush-179:021:25:010
2619134997570,4cyclictest2714061-21kworker/u8:0+flush-179:000:35:230
2619136997466,6cyclictest2680305-21latency_hist22:20:021
2619136997466,6cyclictest2680305-21latency_hist22:20:021
2619134997468,4cyclictest2599606-21kworker/u8:0+events_unbound20:40:210
2619134997167,3cyclictest2680991-21kworker/u8:1+events_unbound22:20:250
2619136997063,5cyclictest2725231-21latency_hist00:40:011
2619134997065,4cyclictest2698068-21kworker/u8:0+flush-179:023:25:210
2619134997057,5cyclictest2599606-21kworker/u8:0+events_unbound19:25:190
2619134996964,4cyclictest2714061-21kworker/u8:0+events_unbound00:10:200
2619134996964,4cyclictest2714061-21kworker/u8:0+events_unbound00:10:200
2619134996957,5cyclictest2614570-21kworker/u8:3+events_unbound19:10:200
2619134996864,3cyclictest2614570-21kworker/u8:3+events_unbound19:15:260
2619134996863,4cyclictest2683476-21kworker/u8:2+flush-179:022:30:240
2619134996855,10cyclictest266-21systemd-journal00:00:000
2619134996762,4cyclictest2701324-21kworker/u8:1+events_unbound00:30:190
2619134996762,4cyclictest2690114-21kworker/u8:1+events_unbound22:55:150
2619134996762,4cyclictest2599606-21kworker/u8:0+flush-179:020:05:200
2619134996754,9cyclictest266-21systemd-journal21:15:000
2619134996663,3cyclictest2599606-21kworker/u8:0+flush-179:020:00:210
2619134996661,4cyclictest2698068-21kworker/u8:0+flush-179:023:19:550
2619134996658,6cyclictest2718853-21latency_hist00:20:010
2619134996561,4cyclictest2599606-21kworker/u8:0+flush-179:019:45:210
2619134996561,3cyclictest2701324-21kworker/u8:1+flush-179:023:45:240
2619134996561,3cyclictest2694890-21kworker/u8:2+flush-179:023:40:230
2619134996560,4cyclictest2666023-21kworker/u8:3+flush-179:021:45:210
2619134996560,4cyclictest2648275-21kworker/u8:2+events_unbound20:55:020
2619134996460,4cyclictest2646614-21kworker/u8:3+events_unbound21:00:160
2619134996457,5cyclictest2677111-21kworker/u8:0+events_unbound22:10:220
2619134996456,7cyclictest2648275-21kworker/u8:2+events_unbound20:45:250
2619136996355,6cyclictest2702865-21latency_hist23:30:001
2619134996358,4cyclictest2599606-21kworker/u8:0+events_unbound20:35:220
2619134996257,4cyclictest2698068-21kworker/u8:0+flush-179:023:30:220
2619134996257,4cyclictest2648275-21kworker/u8:2+flush-179:020:50:150
2619134996252,8cyclictest2642129-21apt-get20:20:110
2619134996252,7cyclictest2701324-21kworker/u8:1+events_unbound00:20:110
2619136996154,5cyclictest2658025-21kworker/u8:1+events_unbound21:10:011
2619136996154,5cyclictest2658025-21kworker/u8:1+events_unbound21:10:001
2619136996153,5cyclictest2704452-21latency_hist23:35:001
2619134996157,3cyclictest2690114-21kworker/u8:1+flush-179:023:05:210
2619134996157,3cyclictest2599606-21kworker/u8:0+flush-179:020:25:150
2619134996056,3cyclictest2658025-21kworker/u8:1+flush-179:021:50:150
2619134996055,4cyclictest2658025-21kworker/u8:1+flush-179:021:25:210
2619143995955,2cyclictest0-21swapper/323:17:593
2619139995954,3cyclictest0-21swapper/223:18:002
2619136995950,7cyclictest2653495-21/usr/sbin/munin20:55:231
2619134995955,3cyclictest2658025-21kworker/u8:1+events_unbound21:40:180
2619136995849,6cyclictest2690114-21kworker/u8:1+events_unbound23:00:001
2619136995848,7cyclictest266-21systemd-journal19:50:001
2619134995851,5cyclictest2659609-21kworker/u8:2+events_unbound21:30:230
2619134995753,3cyclictest2698068-21kworker/u8:0+flush-179:023:20:200
2619134995752,4cyclictest2694890-21kworker/u8:2+events_unbound23:10:160
2619136995648,6cyclictest2691712-21latency_hist22:55:021
2619136995648,6cyclictest2658025-21kworker/u8:1+flush-179:021:40:151
2619136995646,7cyclictest2599606-21kworker/u8:0+flush-179:019:20:201
2619134995651,4cyclictest2714061-21kworker/u8:0+flush-179:000:05:220
2619134995651,4cyclictest2701324-21kworker/u8:1+events_unbound00:00:240
2619134995551,3cyclictest2701324-21kworker/u8:1+flush-179:000:25:190
2619134995549,5cyclictest2599606-21kworker/u8:0+flush-179:019:24:550
2619134995543,10cyclictest266-21systemd-journal20:20:010
2619136995443,8cyclictest2653029-21http20:55:011
2619136995442,9cyclictest2646614-21kworker/u8:3+flush-179:021:00:221
2619136995442,8cyclictest2677111-21kworker/u8:0+flush-179:022:40:151
2619136995344,7cyclictest2646614-21kworker/u8:3+events_unbound20:40:001
2619136995332,19cyclictest2683476-21kworker/u8:2+events_unbound22:30:011
4577091510,9ptp4l61490irq/134-eno1-TxRx-019:05:213
2619143995149,1cyclictest0-21swapper/321:47:003
2619139995148,2cyclictest0-21swapper/221:46:592
2619136995141,7cyclictest2694890-21kworker/u8:2+flush-179:023:15:191
2619134995147,3cyclictest2666023-21kworker/u8:3+flush-179:022:00:230
2619136995043,5cyclictest2659622-21latency_hist21:15:011
2619136995037,10cyclictest2659609-21kworker/u8:2+flush-179:021:30:241
2619134995044,5cyclictest2683535-21kworker/u8:3+events_unbound22:35:140
2619136994943,4cyclictest2690114-21kworker/u8:1+flush-179:023:05:211
2619136994935,11cyclictest510-21rs:main1
2619134994945,3cyclictest2683476-21kworker/u8:2+events_unbound22:45:170
2619134994945,3cyclictest2599606-21kworker/u8:0+flush-179:020:30:240
2619134994942,5cyclictest2619132-21cyclictest22:26:580
2619136994842,4cyclictest2690114-21kworker/u8:1+flush-179:023:00:201
2619136994838,7cyclictest2658025-21kworker/u8:1+flush-179:021:20:231
2619136994738,7cyclictest2669226-21kworker/u8:2+flush-179:022:05:191
2619136994736,9cyclictest2685602-21apt-get22:35:111
2619134994742,4cyclictest2632200-21kworker/u8:3+flush-179:020:10:210
2619134994739,5cyclictest2658037-21latency_hist21:10:020
2619134994739,5cyclictest2658037-21latency_hist21:10:020
2619136994640,4cyclictest2701324-21kworker/u8:1+flush-179:000:25:171
2619136994636,8cyclictest2645300-21apt-get20:30:111
2619136994541,3cyclictest2632200-21kworker/u8:3+flush-179:020:10:261
2619136994539,5cyclictest2599606-21kworker/u8:0+flush-179:020:15:211
2619136994538,5cyclictest2599606-21kworker/u8:0+flush-179:020:05:211
2619136994533,8cyclictest2632200-21kworker/u8:3+events_unbound19:55:191
2619134994536,6cyclictest266-21systemd-journal23:54:480
2619136994439,4cyclictest2677111-21kworker/u8:0+flush-179:022:10:201
2619136994439,3cyclictest2694890-21kworker/u8:2+flush-179:023:10:211
2619136994339,3cyclictest2706061-21munin-run23:40:001
2619136994338,4cyclictest2714061-21kworker/u8:0+flush-179:000:05:151
2619136994338,3cyclictest2659609-21kworker/u8:2+events_unbound21:15:211
2619136994336,5cyclictest2701324-21kworker/u8:1+flush-179:000:20:201
2619136994137,2cyclictest714-21Xorg00:12:001
2619136994137,2cyclictest714-21Xorg00:11:591
2619136994136,4cyclictest2690114-21kworker/u8:1+flush-179:022:50:011
2619136994133,6cyclictest2680991-21kworker/u8:1+flush-179:022:20:211
261913699411,4cyclictest271rcuc/121:59:591
2619134994137,3cyclictest2669226-21kworker/u8:2+flush-179:022:05:250
2619139994036,3cyclictest0-21swapper/222:10:592
261913999400,36cyclictest0-21swapper/221:14:562
261913999400,36cyclictest0-21swapper/220:56:592
2619136994032,6cyclictest2614570-21kworker/u8:3+flush-179:019:30:011
2619136994031,7cyclictest2709486-21apt-get23:50:101
2619136994029,9cyclictest2700236-21diskstats23:20:151
261913699400,38cyclictest714-21Xorg19:12:581
261914399390,38cyclictest0-21swapper/321:14:563
261914399390,1cyclictest0-21swapper/322:34:543
261913999390,2cyclictest0-21swapper/221:55:592
2619136993934,4cyclictest2701324-21kworker/u8:1+events_unbound00:15:231
2619136993930,7cyclictest2599606-21kworker/u8:0+events_unbound19:40:211
261913699391,34cyclictest2625689-21apt-get19:30:111
2619134993934,4cyclictest2632702-21cpuspeed_turbos19:50:140
2619143993835,2cyclictest0-21swapper/322:10:593
2619139993834,2cyclictest0-21swapper/221:26:592
261913999380,36cyclictest0-21swapper/222:29:002
2619136993831,5cyclictest2599606-21kworker/u8:0+flush-179:019:20:001
2619136993830,6cyclictest2599606-21kworker/u8:0+flush-179:019:50:201
2619134993834,4cyclictest2659609-21kworker/u8:2+events_unbound21:35:190
2619143993733,3cyclictest0-21swapper/320:19:593
2619139993733,3cyclictest0-21swapper/219:46:592
261913999370,2cyclictest0-21swapper/222:34:542
2619136993732,3cyclictest2658025-21kworker/u8:1+events_unbound21:25:141
2619136993731,4cyclictest2646614-21kworker/u8:3+flush-179:020:40:141
2619136993731,4cyclictest2643491-21true20:25:001
2619134993732,4cyclictest2614570-21kworker/u8:3+events_unbound19:32:030
2619143993633,2cyclictest0-21swapper/319:46:593
261914399360,35cyclictest0-21swapper/322:28:593
261914399360,35cyclictest0-21swapper/319:58:593
261914399360,1cyclictest0-21swapper/320:56:583
2619136993631,3cyclictest2723645-21systemd-run00:35:001
2619143993533,1cyclictest0-21swapper/321:26:583
2619139993533,1cyclictest0-21swapper/220:19:592
2619139993532,2cyclictest0-21swapper/221:36:592
2619139993532,2cyclictest0-21swapper/219:25:592
2619139993531,2cyclictest0-21swapper/223:25:592
2619139993531,2cyclictest0-21swapper/222:03:002
2619139993531,2cyclictest0-21swapper/200:23:002
261913699353,3cyclictest2707901-21apt-get23:45:131
2619143993432,1cyclictest0-21swapper/321:36:593
2619143993431,2cyclictest0-21swapper/322:02:593
2619143993431,2cyclictest0-21swapper/300:10:593
2619143993431,2cyclictest0-21swapper/300:10:593
2619143993431,1cyclictest0-21swapper/323:26:003
2619139993431,2cyclictest0-21swapper/223:13:592
2619139993430,3cyclictest0-21swapper/200:11:002
2619139993430,3cyclictest0-21swapper/200:10:592
2619139993430,2cyclictest0-21swapper/200:34:552
2619136993431,2cyclictest714-21Xorg20:03:591
2619136993427,5cyclictest2627345-21apt-key19:35:021
2619143993331,1cyclictest0-21swapper/323:14:003
2619143993331,1cyclictest0-21swapper/319:25:593
2619143993331,1cyclictest0-21swapper/300:22:593
2619143993330,2cyclictest0-21swapper/323:50:583
2619143993326,6cyclictest2715675-21turbostat00:10:013
2619139993330,2cyclictest0-21swapper/223:50:592
2619136993325,6cyclictest2599606-21kworker/u8:0+flush-179:020:30:001
2619139993229,2cyclictest0-21swapper/222:19:562
2619139993229,2cyclictest0-21swapper/222:19:552
2619143993129,1cyclictest0-21swapper/322:19:563
2619143993129,1cyclictest0-21swapper/322:19:553
2619143993129,1cyclictest0-21swapper/300:34:553
2619143993125,4cyclictest2638689-21turbostat20:10:003
261913999310,28cyclictest0-21swapper/200:25:132
2619136993122,6cyclictest0-21swapper/123:42:001
2619143993027,2cyclictest0-21swapper/323:35:123
2619143993024,5cyclictest2630481-21turbostat19:45:003
261914399300,28cyclictest0-21swapper/321:51:003
261914399300,1cyclictest0-21swapper/300:39:593
2619139993027,2cyclictest0-21swapper/223:35:132
2619139993027,2cyclictest0-21swapper/220:20:132
261913999300,2cyclictest0-21swapper/221:16:592
261913999300,28cyclictest0-21swapper/222:35:022
261913999300,28cyclictest0-21swapper/200:01:582
261913999300,27cyclictest0-21swapper/223:05:112
261913999300,27cyclictest0-21swapper/219:33:592
4577091290,6ptp4l441ktimers/322:55:013
2619143992926,2cyclictest0-21swapper/323:00:133
2619143992925,2cyclictest0-21swapper/321:55:133
2619143992923,5cyclictest2628882-21turbostat19:40:003
261914399290,2cyclictest0-21swapper/321:20:143
261914399290,2cyclictest0-21swapper/320:20:133
261914399290,2cyclictest0-21swapper/300:25:133
261914399290,28cyclictest0-21swapper/323:30:143
261914399290,28cyclictest0-21swapper/319:20:113
261914399290,27cyclictest0-21swapper/323:40:113
261914399290,27cyclictest0-21swapper/323:05:123
261914399290,27cyclictest0-21swapper/322:35:033
261914399290,27cyclictest0-21swapper/321:40:123
2619139992926,2cyclictest0-21swapper/222:55:592
2619139992926,2cyclictest0-21swapper/221:42:592
2619139992926,2cyclictest0-21swapper/221:09:592
2619139992926,2cyclictest0-21swapper/221:09:592
2619139992926,2cyclictest0-21swapper/220:25:122
2619139992926,2cyclictest0-21swapper/219:35:042
2619139992926,2cyclictest0-21swapper/200:05:142
2619139992926,1cyclictest0-21swapper/220:10:002
261913999290,27cyclictest0-21swapper/223:55:122
261913999290,27cyclictest0-21swapper/223:40:112
261913999290,27cyclictest0-21swapper/222:46:002
261913999290,27cyclictest0-21swapper/221:20:142
261913999290,27cyclictest0-21swapper/220:41:592
261913999290,27cyclictest0-21swapper/219:20:112
4577091280,7ptp4l61490irq/134-eno1-TxRx-021:35:013
4577091280,6ptp4l441ktimers/321:20:003
4577091280,6ptp4l441ktimers/320:55:003
4577091280,6ptp4l441ktimers/320:50:003
2619143992826,1cyclictest0-21swapper/322:55:593
2619143992825,2cyclictest0-21swapper/321:09:593
2619143992825,2cyclictest0-21swapper/321:09:593
2619143992823,4cyclictest2648225-21turbostat20:40:003
261914399280,2cyclictest0-21swapper/320:12:593
261914399280,27cyclictest0-21swapper/323:55:123
261914399280,27cyclictest0-21swapper/320:25:123
261914399280,27cyclictest0-21swapper/300:01:583
2619139992825,2cyclictest0-21swapper/223:30:142
2619139992824,2cyclictest0-21swapper/220:50:592
261913999280,2cyclictest0-21swapper/223:46:592
261913999280,27cyclictest0-21swapper/223:00:142
261913999280,26cyclictest0-21swapper/221:51:002
261913999280,26cyclictest0-21swapper/220:11:592
261913999280,26cyclictest0-21swapper/200:19:592
4577091270,6ptp4l61490irq/134-eno1-TxRx-019:54:553
4577091270,6ptp4l61490irq/134-eno1-TxRx-019:20:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-000:20:013
4577091270,6ptp4l441ktimers/323:25:003
4577091270,5ptp4l441ktimers/319:15:003
261914399270,26cyclictest0-21swapper/319:34:003
261914399270,1cyclictest0-21swapper/322:45:593
2619139992724,2cyclictest0-21swapper/222:40:592
2619139992724,2cyclictest0-21swapper/222:06:582
2619139992724,2cyclictest0-21swapper/220:45:592
2619139992723,2cyclictest0-21swapper/221:02:582
261913999270,1cyclictest0-21swapper/200:39:592
4577091260,5ptp4l61490irq/134-eno1-TxRx-022:24:563
4577091260,5ptp4l441ktimers/321:04:563
4577091260,5ptp4l441ktimers/320:34:553
2619143992624,1cyclictest0-21swapper/322:40:593
2619143992624,1cyclictest0-21swapper/322:06:593
2619143992623,2cyclictest0-21swapper/320:42:593
2619139992623,2cyclictest0-21swapper/220:32:592
2619139992623,2cyclictest0-21swapper/219:40:582
4577091250,4ptp4l441ktimers/320:04:553
2619139992523,1cyclictest0-21swapper/220:40:002
2619139992522,2cyclictest0-21swapper/220:04:592
2619139992522,2cyclictest0-21swapper/219:53:592
2619136992523,1cyclictest0-21swapper/122:02:001
4577091240,4ptp4l61490irq/134-eno1-TxRx-023:49:563
2619139992421,2cyclictest0-21swapper/219:19:592
2619139992320,2cyclictest0-21swapper/219:56:592
2619139992319,2cyclictest0-21swapper/222:24:592
231999220,13rtkit-daemon23940-21sendmail-mta19:06:090
2619139992118,2cyclictest0-21swapper/222:50:582
2619139991915,2cyclictest0-21swapper/221:33:592
2619136991814,2cyclictest2619203-21latency_hist19:10:031
2619139991715,1cyclictest0-21swapper/219:14:592
2619139991714,2cyclictest0-21swapper/223:21:592
26191399930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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