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2026-05-13 - 08:54
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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 May 13, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31901129910796,8cyclictest3297013-21latency_hist00:40:011
31901129910392,8cyclictest3195081-21latency_hist19:25:011
31901129910195,4cyclictest3282334-21kworker/u8:0+flush-179:000:00:281
31901129910192,7cyclictest3290632-21latency_hist00:20:011
31901129910083,13cyclictest3283977-40mandb00:00:011
3190109999884,11cyclictest3253200-21latency_hist22:25:010
3190112999788,6cyclictest3214155-21kworker/u8:0+events_unbound20:25:241
3190109999585,7cyclictest3236769-21apt-get21:35:030
3190112999384,6cyclictest3238610-21latency_hist21:40:011
3190112999278,10cyclictest3251340-21latency_hist22:20:021
3190112999085,4cyclictest3190054-21kworker/u8:3+events_unbound19:45:231
3190112998883,4cyclictest3246611-21kworker/u8:1+events_unbound22:05:241
3190112998782,4cyclictest3222424-21kworker/u8:4+events_unbound21:05:231
3190112998576,6cyclictest3246576-21latency_hist22:05:001
3190112998452,4cyclictest3282334-21kworker/u8:0+events_unbound00:05:131
3190109998376,5cyclictest3234752-21kworker/u8:2+flush-179:021:55:240
3190112998277,4cyclictest3248698-21kworker/u8:0+events_unbound22:10:241
3190112998275,5cyclictest3249786-21kworker/u8:2+events_unbound22:50:241
3190112998274,6cyclictest3275987-21latency_hist23:35:011
3190112998274,6cyclictest3275987-21latency_hist23:35:011
3190112998177,3cyclictest3190054-21kworker/u8:3+flush-179:019:25:261
3190112998175,4cyclictest3264570-21kworker/u8:0+events_unbound23:00:181
3190112998171,7cyclictest3219199-21latency_hist20:40:011
3190109998172,6cyclictest3219457-21/usr/sbin/munin20:40:250
3190112997974,4cyclictest3227212-21kworker/u8:1+flush-179:021:40:131
3190112997870,6cyclictest3240243-21kworker/u8:0+events_unbound21:45:201
3190112997870,5cyclictest3274390-21kworker/u8:1+events_unbound23:50:141
3190112997869,6cyclictest3241831-21kworker/u8:3+events_unbound21:50:211
3190112997765,10cyclictest3221058-21apt-get20:45:111
3190109997769,5cyclictest3204661-21kworker/u8:1+flush-179:020:10:260
3190112997671,3cyclictest3222424-21kworker/u8:4+events_unbound21:20:181
3190112997570,4cyclictest3204661-21kworker/u8:1+flush-179:020:10:221
3190112997466,6cyclictest3261408-21latency_hist22:50:011
3190109997461,9cyclictest3283926-21kworker/u8:2+flush-179:000:15:160
3190112997367,4cyclictest3233044-21kworker/u8:0+events_unbound21:25:171
3190109997365,5cyclictest3222424-21kworker/u8:4+events_unbound21:05:010
3190112997267,4cyclictest3272801-21kworker/u8:0+flush-179:023:40:241
3190109997252,18cyclictest3258477-21/usr/sbin/munin22:40:230
3190112997166,4cyclictest3241831-21kworker/u8:3+events_unbound22:30:241
3190112997166,4cyclictest3184008-21kworker/u8:2+flush-179:019:15:241
3190112997165,4cyclictest3217591-21kworker/u8:3+flush-179:020:55:201
3190109997159,9cyclictest510-21rs:main0
3190112997060,7cyclictest3255045-21latency_hist22:30:011
3190109997061,6cyclictest3274390-21kworker/u8:1+flush-179:000:00:010
3190109997061,6cyclictest3212588-21latency_hist20:20:010
3190112996964,4cyclictest3222424-21kworker/u8:4+flush-179:021:10:151
3190112996964,4cyclictest3190054-21kworker/u8:3+flush-179:019:35:151
3190112996962,6cyclictest3249786-21kworker/u8:2+events_unbound22:20:021
3190112996961,6cyclictest3217611-21latency_hist20:35:011
3190109996960,7cyclictest3201447-21latency_hist19:45:020
3190112996862,4cyclictest3190054-21kworker/u8:3+events_unbound19:10:211
3190112996862,4cyclictest3190054-21kworker/u8:3+events_unbound19:10:201
3190112996857,3cyclictest3224076-21kworker/u8:0+events_unbound21:00:251
3190109996861,5cyclictest3227212-21kworker/u8:1+events_unbound21:35:010
3190109996861,5cyclictest3193250-21apt-get19:20:020
3190109996858,7cyclictest3190054-21kworker/u8:3+flush-179:019:55:210
3190112996762,3cyclictest3255081-21kworker/u8:0+events_unbound22:40:131
3190109996757,7cyclictest3222424-21kworker/u8:4+flush-179:021:15:160
3190109996655,9cyclictest3222697-21apt-get20:50:120
3190109996655,8cyclictest3274638-21/usr/sbin/munin23:30:230
3190109996655,8cyclictest3274638-21/usr/sbin/munin23:30:220
3190112996561,3cyclictest3227212-21kworker/u8:1+events_unbound21:30:211
3190112996561,3cyclictest3190054-21kworker/u8:3+flush-179:019:50:241
3190112996560,4cyclictest3234752-21kworker/u8:2+flush-179:021:55:211
3190112996459,4cyclictest3264639-21kworker/u8:1+events_unbound23:05:251
3190109996455,6cyclictest3233586-21latency_hist21:25:010
3190112996353,7cyclictest3190054-21kworker/u8:3+flush-179:020:05:001
3190112996350,9cyclictest1213033-21systemd-journal20:22:381
3190109996349,8cyclictest3241831-21kworker/u8:3+events_unbound22:25:190
3190112996254,5cyclictest3220804-21latency_hist20:45:011
3190109996255,5cyclictest3241831-21kworker/u8:3+flush-179:022:10:140
3190109996141,18cyclictest3190106-21cyclictest20:33:590
319010999601,57cyclictest3285847-21sshd00:04:010
3190112995954,4cyclictest3283926-21kworker/u8:2+events_unbound00:29:561
3190112995950,7cyclictest3272801-21kworker/u8:0+flush-179:023:25:011
3190109995952,5cyclictest3217865-21apt-get20:35:110
3190109995951,6cyclictest3217591-21kworker/u8:3+events_unbound20:55:250
3190112995854,3cyclictest3222424-21kworker/u8:4+flush-179:021:15:241
3190112995851,5cyclictest3217591-21kworker/u8:3+events_unbound20:50:201
3190112995850,5cyclictest3209396-21latency_hist20:10:011
3190112995848,8cyclictest3287700-21apt-get00:10:151
3190112995845,5cyclictest3256610-21kworker/u8:4+events_unbound22:55:151
3190109995848,8cyclictest3203286-21apt-get19:50:110
3190109995835,3cyclictest3289068-21systemd-run00:15:000
3190109995754,2cyclictest3234752-21kworker/u8:2+flush-179:021:50:160
3190109995750,5cyclictest3262994-21latency_hist22:55:010
3190109995747,8cyclictest3260079-21apt-get22:45:110
3190112995652,3cyclictest3269340-21kworker/u8:3+events_unbound23:15:211
3190109995648,6cyclictest3274390-21kworker/u8:1+flush-179:000:10:000
3190112995549,4cyclictest3209322-21kworker/u8:2+events_unbound20:15:131
3190109995550,3cyclictest3184008-21kworker/u8:2+flush-179:019:15:140
3190109995450,2cyclictest3264570-21kworker/u8:0+flush-179:023:00:250
3190109995449,3cyclictest3227212-21kworker/u8:1+flush-179:021:10:290
3190109995341,9cyclictest3269360-21latency_hist23:15:010
3190112995248,3cyclictest3203910-21kworker/u8:0+events_unbound19:55:191
3190109995242,8cyclictest3276242-21apt-get23:35:110
3190112995146,4cyclictest3283926-21kworker/u8:2+events_unbound00:30:201
3190112995145,5cyclictest3274390-21kworker/u8:1+flush-179:023:39:561
3190109995144,5cyclictest3276022-21kworker/u8:3+flush-179:023:50:210
3190109995144,5cyclictest3234752-21kworker/u8:2+flush-179:022:00:170
3190109995139,9cyclictest3190054-21kworker/u8:3+flush-179:019:25:170
3190109995128,8cyclictest3206462-21/usr/sbin/munin20:00:230
3190112995044,4cyclictest1213033-21systemd-journal19:30:381
3190112995044,4cyclictest1213033-21systemd-journal19:30:381
3190112994945,3cyclictest3289009-21kworker/u8:0+events_unbound00:20:221
3190109994945,2cyclictest3289009-21kworker/u8:0+events_unbound00:20:240
3190109994943,4cyclictest3233044-21kworker/u8:0+flush-179:021:25:180
3190109994940,7cyclictest3292201-21kworker/u8:1+flush-179:000:25:230
4577091480,13ptp4l441ktimers/319:10:013
3190109994842,4cyclictest3272801-21kworker/u8:0+flush-179:023:40:220
3190109994840,5cyclictest3190054-21kworker/u8:3+events_unbound19:40:000
3190109994741,4cyclictest3272801-21kworker/u8:0+events_unbound23:45:230
3190109994738,7cyclictest3190054-21kworker/u8:3+flush-179:019:45:180
3190112994642,3cyclictest3269340-21kworker/u8:3+events_unbound23:14:381
3190112994642,3cyclictest3256610-21kworker/u8:4+events_unbound22:39:561
3190109994641,3cyclictest3204661-21kworker/u8:1+events_unbound20:25:140
3190109994640,4cyclictest3283926-21kworker/u8:2+flush-179:000:35:150
3190109994638,6cyclictest3248698-21kworker/u8:0+flush-179:022:15:250
3190112994541,3cyclictest3272801-21kworker/u8:0+events_unbound23:45:391
3190112994238,3cyclictest3274390-21kworker/u8:1+events_unbound23:29:571
3190109994237,3cyclictest3249786-21kworker/u8:2+events_unbound22:35:200
319010999421,39cyclictest3256636-21munin-run22:35:000
3190109994138,2cyclictest3264639-21kworker/u8:1+events_unbound23:05:150
3190109994136,4cyclictest3222424-21kworker/u8:4+events_unbound21:05:170
3190118994037,2cyclictest0-21swapper/322:26:583
319011899390,38cyclictest3269368-21turbostat23:15:003
3190109993936,2cyclictest0-21swapper/022:57:590
3190109993934,3cyclictest714-21Xorg23:27:590
3190109993931,6cyclictest3246611-21kworker/u8:1+events_unbound22:09:590
3190109993930,7cyclictest3295406-21latency_hist00:35:010
319010999390,2cyclictest714-21Xorg23:19:590
3190118993735,1cyclictest0-21swapper/321:19:593
319011899370,35cyclictest0-21swapper/320:18:593
3190114993734,2cyclictest0-21swapper/221:18:592
3190114993734,2cyclictest0-21swapper/220:51:592
3190114993734,2cyclictest0-21swapper/219:21:002
319011499370,35cyclictest0-21swapper/222:38:002
319011499370,35cyclictest0-21swapper/200:09:592
319011499370,34cyclictest0-21swapper/221:45:002
3190112993733,3cyclictest3190054-21kworker/u8:3+events_unbound19:44:391
3190109993733,2cyclictest3214185-21cron20:25:000
3190109993732,4cyclictest3204661-21kworker/u8:1+flush-179:020:05:150
3190118993634,1cyclictest0-21swapper/320:44:553
3190118993633,2cyclictest0-21swapper/323:25:593
3190118993633,2cyclictest0-21swapper/321:49:553
319011899360,35cyclictest0-21swapper/319:52:593
319011899360,29cyclictest0-21swapper/322:02:593
3190114993633,2cyclictest0-21swapper/223:05:002
3190114993633,2cyclictest0-21swapper/221:12:002
3190114993633,2cyclictest0-21swapper/220:16:592
3190114993633,2cyclictest0-21swapper/219:16:582
3190114993633,2cyclictest0-21swapper/219:11:592
3190114993633,2cyclictest0-21swapper/219:11:592
319011499360,1cyclictest0-21swapper/222:34:582
3190109993628,6cyclictest3240210-21latency_hist21:45:010
3190109993625,9cyclictest3196923-21apt-get19:30:120
3190109993625,9cyclictest3196923-21apt-get19:30:110
3190118993532,2cyclictest0-21swapper/300:29:543
319011899350,34cyclictest0-21swapper/300:38:593
319011899350,1cyclictest0-21swapper/323:23:593
3190114993532,2cyclictest0-21swapper/223:36:592
3190118993432,1cyclictest0-21swapper/300:16:003
3190118993431,2cyclictest0-21swapper/321:59:563
3190118993431,2cyclictest0-21swapper/319:29:553
3190118993431,2cyclictest0-21swapper/300:11:583
3190118993427,5cyclictest3219217-21turbostat20:40:003
3190114993431,2cyclictest0-21swapper/222:47:582
3190114993430,2cyclictest0-21swapper/223:57:582
3190109993431,2cyclictest0-21swapper/023:22:590
319010999341,30cyclictest0-21swapper/019:10:140
319010999341,30cyclictest0-21swapper/019:10:130
3190118993331,1cyclictest0-21swapper/322:20:593
3190118993230,1cyclictest0-21swapper/323:09:553
3190118993230,1cyclictest0-21swapper/322:40:003
3190118993229,2cyclictest0-21swapper/323:01:583
3190114993230,1cyclictest0-21swapper/220:23:592
3190114993229,2cyclictest0-21swapper/221:09:562
3190114993229,2cyclictest0-21swapper/220:03:592
3190114993229,2cyclictest0-21swapper/200:04:542
3190118993129,1cyclictest0-21swapper/322:11:593
3190118993129,1cyclictest0-21swapper/319:19:543
3190118993129,1cyclictest0-21swapper/300:08:593
3190118993128,2cyclictest0-21swapper/321:00:593
3190114993128,2cyclictest0-21swapper/221:50:592
3190114993128,2cyclictest0-21swapper/221:39:592
319011499310,29cyclictest0-21swapper/221:21:592
319011499310,29cyclictest0-21swapper/219:45:122
4577091300,4ptp4l61490irq/134-eno1-TxRx-020:25:013
3190118993028,1cyclictest0-21swapper/323:32:003
3190118993028,1cyclictest0-21swapper/323:31:593
3190118993028,1cyclictest0-21swapper/320:55:593
3190118993028,1cyclictest0-21swapper/319:59:553
319011899300,2cyclictest3295417-21turbostat00:35:003
319011899300,28cyclictest0-21swapper/319:20:023
3190114993027,2cyclictest0-21swapper/222:51:592
3190114993027,2cyclictest0-21swapper/222:20:012
3190114993027,2cyclictest0-21swapper/221:30:142
3190114993027,2cyclictest0-21swapper/221:26:002
3190114993027,2cyclictest0-21swapper/219:36:592
3190114993027,2cyclictest0-21swapper/200:10:152
319011499300,2cyclictest0-21swapper/222:20:022
319011499300,2cyclictest0-21swapper/220:45:132
319011499300,28cyclictest0-21swapper/221:00:132
319011499300,28cyclictest0-21swapper/219:55:122
4577091290,7ptp4l441ktimers/321:10:003
4577091290,7ptp4l441ktimers/300:05:013
4577091290,6ptp4l441ktimers/319:40:003
4577091290,4ptp4l441ktimers/321:24:563
3190118992926,2cyclictest3277587-21turbostat23:39:593
3190118992926,2cyclictest0-21swapper/323:55:123
3190118992925,2cyclictest0-21swapper/320:00:133
319011899290,27cyclictest0-21swapper/321:50:123
319011899290,27cyclictest0-21swapper/321:35:133
319011899290,27cyclictest0-21swapper/320:50:133
3190114992926,2cyclictest0-21swapper/219:25:142
3190114992925,2cyclictest0-21swapper/200:17:592
319011499290,28cyclictest0-21swapper/220:30:022
319011499290,27cyclictest0-21swapper/223:40:132
319011499290,27cyclictest0-21swapper/223:20:142
319011499290,27cyclictest0-21swapper/222:25:022
319011499290,27cyclictest0-21swapper/200:20:142
319011499290,1cyclictest0-21swapper/223:15:142
3190118992826,1cyclictest0-21swapper/322:40:133
3190118992826,1cyclictest0-21swapper/319:49:553
3190118992825,1cyclictest0-21swapper/323:54:553
319011899280,27cyclictest0-21swapper/322:50:143
319011899280,26cyclictest0-21swapper/322:45:133
319011899280,26cyclictest0-21swapper/322:05:113
319011899280,26cyclictest0-21swapper/320:10:143
3190114992825,2cyclictest0-21swapper/219:30:592
3190114992825,2cyclictest0-21swapper/219:30:582
319011499280,2cyclictest0-21swapper/223:45:132
319011499280,27cyclictest0-21swapper/220:35:592
319011499280,26cyclictest0-21swapper/200:35:132
319011499280,26cyclictest0-21swapper/200:30:592
231999280,17rtkit-daemon495-21gpm19:05:131
4577091270,7ptp4l61490irq/134-eno1-TxRx-022:20:013
4577091270,6ptp4l441ktimers/323:45:013
4577091270,6ptp4l441ktimers/321:15:013
4577091270,6ptp4l441ktimers/320:10:003
4577091270,6ptp4l441ktimers/300:24:563
3190118992725,1cyclictest0-21swapper/320:30:113
3190118992725,1cyclictest0-21swapper/320:28:593
319011899270,26cyclictest0-21swapper/321:33:583
319011899270,1cyclictest0-21swapper/321:40:133
3190114992724,2cyclictest0-21swapper/222:58:592
3190114992724,2cyclictest0-21swapper/220:05:132
319011499270,24cyclictest0-21swapper/222:09:552
319011499270,1cyclictest0-21swapper/221:46:592
3190109992721,4cyclictest3240243-21kworker/u8:0+flush-179:021:45:170
4577091260,6ptp4l61490irq/134-eno1-TxRx-022:35:013
4577091260,6ptp4l61490irq/134-eno1-TxRx-020:50:003
4577091260,5ptp4l61490irq/134-eno1-TxRx-019:35:023
4577091260,5ptp4l61490irq/134-eno1-TxRx-019:35:013
4577091260,5ptp4l441ktimers/323:50:003
3190118992623,2cyclictest0-21swapper/321:27:003
3190114992623,2cyclictest0-21swapper/223:30:592
3190114992623,2cyclictest0-21swapper/223:30:592
3190114992623,2cyclictest0-21swapper/220:25:592
319011499260,2cyclictest0-21swapper/220:13:582
319011499260,1cyclictest0-21swapper/222:44:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-019:14:573
4577091250,5ptp4l61490irq/134-eno1-TxRx-019:14:563
3190118992523,1cyclictest0-21swapper/319:41:593
3190114992522,2cyclictest0-21swapper/200:26:592
319011499250,23cyclictest0-21swapper/219:44:582
4577091240,4ptp4l441ktimers/323:00:013
319011899240,23cyclictest0-21swapper/323:17:593
3190114992421,2cyclictest0-21swapper/223:28:582
3190109992421,2cyclictest0-21swapper/019:10:010
3190114992320,2cyclictest0-21swapper/223:06:592
3190114992219,2cyclictest0-21swapper/223:54:002
3190114992219,2cyclictest0-21swapper/223:11:582
319011499200,2cyclictest0-21swapper/222:13:592
3190114991816,1cyclictest0-21swapper/220:55:122
3190114991614,1cyclictest0-21swapper/222:00:002
31901149996,2cyclictest0-21swapper/219:54:312
31901149974,2cyclictest0-21swapper/222:04:062
31901149970,6cyclictest0-21swapper/220:40:262
31901149930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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