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2026-07-22 - 06:58
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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 Jul 22, 2026 00:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
85759199147136,9cyclictest951256-40mandb00:00:010
85759199147136,9cyclictest951256-40mandb00:00:010
85759199145135,7cyclictest894705-21latency_hist21:05:010
85759199128122,5cyclictest876903-21kworker/u8:1+flush-179:020:15:010
85759199127117,7cyclictest894687-21kworker/u8:1+flush-179:021:20:260
85759199123116,4cyclictest951269-21kworker/u8:0+flush-179:000:05:170
85759199123116,4cyclictest951269-21kworker/u8:0+flush-179:000:05:170
85759499122114,6cyclictest954504-21kworker/u8:3+flush-179:000:15:251
85759199122111,8cyclictest899745-21latency_hist21:20:010
85759499118108,7cyclictest896551-21latency_hist21:10:001
85759499118107,8cyclictest902922-21latency_hist21:30:001
85759199118111,5cyclictest951269-21kworker/u8:0+events_unbound00:05:010
85759199116109,5cyclictest927062-21kworker/u8:1+flush-179:023:05:240
85759199116108,6cyclictest927062-21kworker/u8:1+flush-179:023:00:260
85759199114108,4cyclictest873662-21kworker/u8:3+events_unbound20:30:190
85759199114107,4cyclictest935009-21kworker/u8:0+flush-179:023:15:240
85759499112106,4cyclictest910330-21kworker/u8:1+flush-179:021:55:251
85759199110102,5cyclictest935017-21kworker/u8:2+flush-179:023:20:210
85759199110100,7cyclictest857526-21kworker/u8:2+flush-179:019:10:200
85759199109104,4cyclictest902908-21kworker/u8:0+events_unbound22:15:010
85759199109102,5cyclictest927062-21kworker/u8:1+flush-179:023:00:010
8575949910897,8cyclictest906131-21latency_hist21:40:021
8575949910796,8cyclictest918893-21kworker/u8:2+flush-179:022:30:271
8575919910699,5cyclictest867868-21kworker/u8:2+events_unbound19:45:010
8575919910698,6cyclictest873662-21kworker/u8:3+flush-179:020:25:000
8575919910598,5cyclictest873662-21kworker/u8:3+events_unbound20:40:270
8575919910598,5cyclictest857526-21kworker/u8:2+flush-179:019:15:240
8575919910597,5cyclictest935009-21kworker/u8:0+flush-179:023:25:240
8575919910497,5cyclictest935009-21kworker/u8:0+events_unbound23:10:250
8575919910397,4cyclictest914063-21kworker/u8:2+events_unbound22:05:240
8575919910395,5cyclictest902908-21kworker/u8:0+flush-179:021:30:210
8575919910393,7cyclictest918893-21kworker/u8:2+flush-179:022:40:180
8575949910287,10cyclictest888263-21kworker/u8:2+flush-179:021:00:011
8575919910295,5cyclictest949613-21kworker/u8:2+events_unbound00:20:240
8575919910193,5cyclictest840875-21kworker/u8:0+flush-179:019:20:200
8575919910193,5cyclictest840875-21kworker/u8:0+flush-179:019:20:190
8575919910093,5cyclictest862779-21kworker/u8:1+events_unbound19:25:200
857591999993,4cyclictest949613-21kworker/u8:2+events_unbound00:10:130
857591999892,4cyclictest928654-21kworker/u8:0+flush-179:022:50:220
857591999892,4cyclictest862779-21kworker/u8:1+flush-179:019:30:160
857594999786,9cyclictest890125-21apt-get20:50:111
857594999786,9cyclictest886953-21apt-get20:40:151
857594999786,8cyclictest1213033-21systemd-journal22:25:171
857594999783,10cyclictest1213033-21systemd-journal23:50:011
857594999783,10cyclictest1213033-21systemd-journal23:50:011
857591999790,4cyclictest915650-21kworker/u8:1+events_unbound22:20:230
857591999687,7cyclictest915650-21kworker/u8:1+flush-179:022:25:030
857591999684,9cyclictest867868-21kworker/u8:2+flush-179:019:55:160
857591999683,4cyclictest943239-21kworker/u8:3+events_unbound23:40:010
857594999584,8cyclictest949613-21kworker/u8:2+flush-179:000:10:211
857591999588,5cyclictest960165-21kworker/u8:1+flush-179:000:30:130
857591999587,6cyclictest880293-21kworker/u8:0+events_unbound20:55:010
857594999379,10cyclictest862300-21apt-get19:25:011
857594999379,10cyclictest862300-21apt-get19:25:011
857594999283,7cyclictest915919-21apt-get22:10:121
857594999283,6cyclictest878468-21apt-get20:15:011
857594999281,8cyclictest951485-21/usr/sbin/munin00:00:181
857591999286,4cyclictest870533-21kworker/u8:0+flush-179:019:50:180
857594999184,4cyclictest935009-21kworker/u8:0+events_unbound23:10:011
857591999183,6cyclictest905176-21kworker/u8:2+events_unbound21:50:000
857591999079,8cyclictest904764-21apt-get21:35:140
857591998876,9cyclictest1213033-21systemd-journal20:05:010
857591998875,10cyclictest888263-21kworker/u8:2+flush-179:020:55:170
857591998781,4cyclictest875274-21kworker/u8:0+flush-179:020:05:200
857591998781,4cyclictest873662-21kworker/u8:3+flush-179:020:15:260
857594998679,4cyclictest840875-21kworker/u8:0+flush-179:019:35:211
857594998674,9cyclictest935017-21kworker/u8:2+events_unbound23:20:241
857591998679,5cyclictest946430-21kworker/u8:0+events_unbound23:45:150
857591998679,5cyclictest946430-21kworker/u8:0+events_unbound23:45:150
857591998679,5cyclictest922601-21kworker/u8:0+flush-179:022:30:200
857594998577,5cyclictest859086-21latency_hist19:15:011
857591998577,6cyclictest902908-21kworker/u8:0+flush-179:021:40:220
857591998575,7cyclictest935009-21kworker/u8:0+flush-179:023:30:220
857591998574,4cyclictest902908-21kworker/u8:0+events_unbound22:15:140
857594998468,13cyclictest1213033-21systemd-journal20:00:001
857594998371,9cyclictest914063-21kworker/u8:2+flush-179:022:05:001
857591998376,5cyclictest891503-21kworker/u8:3+flush-179:021:05:280
857591998375,4cyclictest867868-21kworker/u8:2+flush-179:019:50:010
857591998374,6cyclictest951269-21kworker/u8:0+flush-179:000:25:180
857591998374,6cyclictest951269-21kworker/u8:0+flush-179:000:25:180
857591998372,8cyclictest1213033-21systemd-journal21:15:000
857594998275,5cyclictest510-21rs:main1
857594998272,7cyclictest928918-21apt-get22:50:111
857594998271,8cyclictest914063-21kworker/u8:2+events_unbound22:05:291
857591998277,4cyclictest960165-21kworker/u8:1+events_unbound00:35:220
857594998169,9cyclictest862779-21kworker/u8:1+flush-179:019:40:221
857591998072,6cyclictest948287-21apt-get23:50:120
857594997972,5cyclictest880293-21kworker/u8:0+events_unbound21:00:251
857594997969,8cyclictest902908-21kworker/u8:0+flush-179:021:30:171
857591997973,4cyclictest918893-21kworker/u8:2+flush-179:022:35:230
857594997870,5cyclictest876903-21kworker/u8:1+events_unbound20:15:151
857594997868,7cyclictest894687-21kworker/u8:1+flush-179:021:20:171
857591997872,4cyclictest902908-21kworker/u8:0+events_unbound21:50:240
857591997865,7cyclictest940062-21kworker/u8:1+events_unbound23:40:350
857597997770,5cyclictest870513-21turbostat19:50:013
857591997770,5cyclictest928664-21latency_hist22:50:010
857594997667,5cyclictest880293-21kworker/u8:0+events_unbound20:20:141
857594997665,8cyclictest920456-21apt-get22:25:011
857591997671,4cyclictest910330-21kworker/u8:1+flush-179:021:55:280
857591997670,4cyclictest873662-21kworker/u8:3+events_unbound20:35:130
857591997666,6cyclictest910330-21kworker/u8:1+flush-179:022:00:150
857594997565,7cyclictest940062-21kworker/u8:1+flush-179:023:50:171
857591997570,4cyclictest840875-21kworker/u8:0+flush-179:019:35:240
857594997467,5cyclictest870755-21apt-get19:50:101
857594997462,9cyclictest891503-21kworker/u8:3+flush-179:021:10:231
857594997461,10cyclictest960165-21kworker/u8:1+events_unbound00:30:241
857594997360,9cyclictest927062-21kworker/u8:1+events_unbound22:55:171
857594997164,5cyclictest894687-21kworker/u8:1+events_unbound21:15:251
857594997161,8cyclictest1213033-21systemd-journal00:25:011
857591997165,5cyclictest885866-21kworker/u8:1+flush-179:020:45:220
857594997058,8cyclictest918893-21kworker/u8:2+flush-179:022:35:221
857597996962,5cyclictest894713-21turbostat21:04:593
857594996964,3cyclictest873662-21kworker/u8:3+events_unbound20:35:181
857594996959,6cyclictest923864-21kworker/u8:3+flush-179:022:45:251
85759499690,67cyclictest1-21systemd00:10:001
85759499690,67cyclictest1-21systemd00:10:001
857594996861,5cyclictest880293-21kworker/u8:0+flush-179:020:30:011
857594996757,7cyclictest862779-21kworker/u8:1+events_unbound19:30:181
857591996661,4cyclictest894687-21kworker/u8:1+flush-179:021:29:550
857594996557,5cyclictest902908-21kworker/u8:0+flush-179:022:20:001
857594996554,8cyclictest935009-21kworker/u8:0+flush-179:023:15:241
857594996553,9cyclictest862300-21apt-get19:25:031
857594996457,5cyclictest949613-21kworker/u8:2+events_unbound00:30:011
857594996457,5cyclictest949613-21kworker/u8:2+events_unbound00:30:011
857594996455,6cyclictest905176-21kworker/u8:2+flush-179:021:45:211
857594996455,6cyclictest873662-21kworker/u8:3+flush-179:020:00:251
857594996357,4cyclictest885866-21kworker/u8:1+flush-179:020:45:251
857591996256,4cyclictest954504-21kworker/u8:3+flush-179:000:15:150
857594996155,4cyclictest951270-21kworker/u8:3+flush-179:000:00:011
857594996155,4cyclictest951270-21kworker/u8:3+flush-179:000:00:011
857594996152,6cyclictest960165-21kworker/u8:1+events_unbound00:35:151
857594996055,4cyclictest941650-21kworker/u8:2+flush-179:023:30:161
857594996053,5cyclictest902908-21kworker/u8:0+flush-179:021:40:221
857594996052,6cyclictest854522-21kworker/u8:3+flush-179:019:20:001
857594995949,8cyclictest870500-21latency_hist19:50:011
857591995752,4cyclictest873662-21kworker/u8:3+flush-179:020:25:260
857594995646,7cyclictest945095-21/usr/sbin/munin23:40:161
857594995548,5cyclictest918893-21kworker/u8:2+events_unbound22:45:011
857594995447,5cyclictest883757-21apt-get20:30:121
857594995345,6cyclictest902908-21kworker/u8:0+flush-179:021:50:221
857594995246,4cyclictest940062-21kworker/u8:1+flush-179:023:35:221
857595995149,1cyclictest0-21swapper/200:29:592
857595995149,1cyclictest0-21swapper/200:29:582
857594995024,3cyclictest876909-21systemd-run20:10:011
4577091500,13ptp4l441ktimers/319:09:553
857594994838,7cyclictest927062-21kworker/u8:1+flush-179:023:00:221
857594994739,6cyclictest935009-21kworker/u8:0+flush-179:023:30:001
857595994340,2cyclictest0-21swapper/200:03:592
857595994238,2cyclictest0-21swapper/219:26:002
857597994033,5cyclictest941669-21turbostat23:30:003
857597993933,5cyclictest927087-21turbostat22:45:003
85759599390,36cyclictest0-21swapper/220:43:002
857597993833,4cyclictest910888-21turbostat21:54:593
857597993832,5cyclictest918873-21turbostat22:20:003
857595993835,2cyclictest0-21swapper/221:15:582
85759599380,36cyclictest0-21swapper/200:36:592
85759599380,35cyclictest0-21swapper/221:36:592
85759599380,35cyclictest0-21swapper/220:14:552
85759599380,35cyclictest0-21swapper/219:36:592
857597993735,1cyclictest0-21swapper/322:32:583
857595993733,2cyclictest0-21swapper/222:10:592
85759599370,35cyclictest0-21swapper/221:32:582
85759599370,2cyclictest0-21swapper/221:52:592
857597993634,1cyclictest0-21swapper/322:00:003
857597993630,5cyclictest930261-21turbostat22:55:003
85759599360,1cyclictest0-21swapper/222:03:592
85759599360,1cyclictest0-21swapper/220:17:592
857597993533,1cyclictest0-21swapper/323:39:593
857597993533,1cyclictest0-21swapper/321:46:583
857597993530,4cyclictest899749-21turbostat21:20:003
857597993528,5cyclictest920463-21turbostat22:25:003
857595993532,2cyclictest0-21swapper/223:46:592
857595993532,2cyclictest0-21swapper/223:46:592
85759599350,1cyclictest0-21swapper/220:37:002
857597993432,1cyclictest0-21swapper/320:16:593
857597993432,1cyclictest0-21swapper/300:29:553
857597993432,1cyclictest0-21swapper/300:29:543
857597993429,4cyclictest959516-21turbostat00:25:003
857595993431,2cyclictest0-21swapper/222:19:552
857595993431,2cyclictest0-21swapper/219:54:562
857595993430,2cyclictest0-21swapper/219:34:592
857595993330,2cyclictest0-21swapper/223:36:592
857595993329,2cyclictest0-21swapper/222:38:592
857597993230,1cyclictest0-21swapper/321:05:593
857597993230,1cyclictest0-21swapper/300:19:553
857597993228,3cyclictest943259-21turbostat23:35:003
857597993129,1cyclictest0-21swapper/321:39:003
857597993129,1cyclictest0-21swapper/319:29:593
857597993129,1cyclictest0-21swapper/319:20:593
857597993129,1cyclictest0-21swapper/319:20:593
857597993128,2cyclictest0-21swapper/323:11:593
857597993128,2cyclictest0-21swapper/322:27:003
857597993126,4cyclictest915666-21turbostat22:14:563
857597993125,5cyclictest893132-21turbostat21:00:003
857597993124,6cyclictest952893-21turbostat00:05:003
857595993128,2cyclictest0-21swapper/222:45:592
857597993028,1cyclictest0-21swapper/323:49:553
857597993028,1cyclictest0-21swapper/323:49:553
857597993028,1cyclictest0-21swapper/321:31:583
857597993028,1cyclictest0-21swapper/300:14:553
857597993027,2cyclictest0-21swapper/319:50:103
857595993027,2cyclictest0-21swapper/221:10:152
85759599300,28cyclictest0-21swapper/223:05:142
85759599300,28cyclictest0-21swapper/222:30:162
85759599300,28cyclictest0-21swapper/220:05:142
85759599300,22cyclictest0-21swapper/200:30:122
4577091300,7ptp4l441ktimers/320:25:003
857597992927,1cyclictest0-21swapper/300:39:543
857597992923,5cyclictest888294-21turbostat20:44:593
85759799290,27cyclictest0-21swapper/320:15:023
85759799290,27cyclictest0-21swapper/320:00:133
85759799290,27cyclictest0-21swapper/319:55:143
857595992926,2cyclictest0-21swapper/223:15:012
857595992926,2cyclictest0-21swapper/222:40:122
857595992926,2cyclictest0-21swapper/221:45:142
857595992926,2cyclictest0-21swapper/220:20:132
857595992926,2cyclictest0-21swapper/219:10:122
857595992925,2cyclictest0-21swapper/222:25:032
85759599290,27cyclictest0-21swapper/223:55:132
85759599290,27cyclictest0-21swapper/223:55:132
85759599290,27cyclictest0-21swapper/223:40:122
85759599290,27cyclictest0-21swapper/223:25:132
85759599290,27cyclictest0-21swapper/223:20:132
85759599290,27cyclictest0-21swapper/223:15:012
85759599290,27cyclictest0-21swapper/221:55:592
85759599290,27cyclictest0-21swapper/221:05:012
85759599290,27cyclictest0-21swapper/221:00:132
85759599290,27cyclictest0-21swapper/220:55:152
85759599290,27cyclictest0-21swapper/219:25:022
85759599290,27cyclictest0-21swapper/219:25:022
85759599290,27cyclictest0-21swapper/200:20:022
85759599290,1cyclictest0-21swapper/223:30:132
4577091290,7ptp4l441ktimers/320:34:563
857597992826,1cyclictest0-21swapper/323:40:123
857597992826,1cyclictest0-21swapper/321:25:153
857597992826,1cyclictest0-21swapper/320:39:003
857597992826,1cyclictest0-21swapper/320:25:593
857597992822,5cyclictest865731-21turbostat19:35:003
857597992822,4cyclictest859093-21turbostat19:15:003
85759799280,2cyclictest0-21swapper/322:35:143
85759799280,26cyclictest0-21swapper/321:41:003
857595992826,1cyclictest0-21swapper/220:34:582
85759599280,2cyclictest0-21swapper/222:50:122
85759599280,2cyclictest0-21swapper/221:20:152
85759599280,26cyclictest0-21swapper/222:05:162
85759599280,26cyclictest0-21swapper/219:42:582
857594992821,5cyclictest857471-21latency_hist19:10:021
4577091280,6ptp4l441ktimers/321:14:553
857597992725,1cyclictest0-21swapper/323:56:593
857597992725,1cyclictest0-21swapper/323:56:593
857597992725,1cyclictest0-21swapper/322:49:593
857597992725,1cyclictest0-21swapper/300:31:593
857597992721,5cyclictest935042-21turbostat23:10:003
85759799270,1cyclictest0-21swapper/321:20:163
857595992724,2cyclictest0-21swapper/222:22:592
857595992724,2cyclictest0-21swapper/221:42:002
857595992724,2cyclictest0-21swapper/220:45:132
85759599270,24cyclictest0-21swapper/223:54:562
4577091270,7ptp4l441ktimers/323:25:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-022:59:553
4577091270,6ptp4l441ktimers/322:09:553
4577091270,6ptp4l441ktimers/320:55:013
4577091270,5ptp4l441ktimers/319:39:543
857597992624,1cyclictest0-21swapper/323:52:593
857597992624,1cyclictest0-21swapper/320:07:593
85759799260,1cyclictest0-21swapper/300:09:593
85759799260,1cyclictest0-21swapper/300:09:593
85759599260,24cyclictest0-21swapper/220:00:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-019:44:553
4577091260,5ptp4l61490irq/134-eno1-TxRx-023:19:553
4577091260,5ptp4l441ktimers/323:05:013
4577091260,5ptp4l441ktimers/320:49:563
4577091260,4ptp4l441ktimers/319:20:003
857595992420,2cyclictest0-21swapper/220:52:002
857595992320,2cyclictest0-21swapper/222:55:592
857595992320,2cyclictest0-21swapper/219:57:582
857595992118,2cyclictest0-21swapper/200:17:592
857591991815,2cyclictest0-21swapper/019:10:010
857595991714,2cyclictest0-21swapper/200:11:592
857595991613,2cyclictest0-21swapper/221:29:002
857595991613,2cyclictest0-21swapper/219:18:592
4577091160,3ptp4l61490irq/134-eno1-TxRx-022:00:013
857595991411,2cyclictest0-21swapper/200:06:592
857595991411,2cyclictest0-21swapper/200:06:592
857595991310,2cyclictest0-21swapper/219:45:592
85759599107,2cyclictest0-21swapper/220:26:592
8575959974,2cyclictest0-21swapper/223:00:312
8575959930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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