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2026-05-19 - 03:35
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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 792 highest latencies:
System rackeslot6.osadl.org (updated Tue May 19, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29998169911888,27cyclictest3056493-21kworker/u8:0+flush-179:022:10:241
299981299112102,7cyclictest3007681-21latency_hist19:35:010
299981299112102,7cyclictest1213033-21systemd-journal00:00:010
299981699111103,5cyclictest3009274-21latency_hist19:40:011
29998129911191,17cyclictest3102714-21latency_hist00:30:010
29998129910090,8cyclictest3010874-21latency_hist19:45:010
2999812999989,7cyclictest1213033-21systemd-journal22:55:010
2999816999787,7cyclictest3080129-21latency_hist23:20:011
2999816999184,4cyclictest3030582-21kworker/u8:2+flush-179:021:00:231
2999812998981,6cyclictest1213033-21systemd-journal23:05:000
2999812998981,6cyclictest1213033-21systemd-journal23:05:000
2999812998977,9cyclictest3078755-21/usr/sbin/munin23:15:250
2999812998676,8cyclictest3027583-21/usr/sbin/munin20:35:260
2999812998676,8cyclictest3027583-21/usr/sbin/munin20:35:250
2999816998476,5cyclictest3048012-21kworker/u8:0+flush-179:021:40:241
2999812998476,6cyclictest3052802-21latency_hist21:55:010
2999816998374,7cyclictest3093372-21/usr/sbin/munin00:00:241
2999816998273,6cyclictest3018874-21latency_hist20:10:011
2999812998269,10cyclictest3020460-21latency_hist20:15:010
2999816998071,6cyclictest3073806-21kworker/u8:3+flush-179:023:30:001
2999816997969,7cyclictest1213033-21systemd-journal21:59:591
2999816997968,8cyclictest1213033-21systemd-journal22:20:001
2999816997766,9cyclictest3003177-21apt-get19:20:111
2999812997766,8cyclictest3040306-21/usr/sbin/munin21:15:250
2999816997665,10cyclictest3004318-21kworker/u8:0+flush-179:019:25:241
2999816997262,7cyclictest3040069-21latency_hist21:15:011
2999816996956,3cyclictest3025507-21apt-get20:30:001
2999812996859,7cyclictest3056494-21/usr/sbin/munin22:05:240
2999816996660,4cyclictest3061291-21apt-get22:20:111
2999812996663,2cyclictest3007658-21kworker/u8:0+events_unbound20:00:220
2999812996655,8cyclictest3093157-21kworker/u8:3+flush-179:000:10:210
2999816996560,4cyclictest3007658-21kworker/u8:0+flush-179:020:00:251
2999816996557,6cyclictest3035271-21kworker/u8:1+flush-179:021:40:011
2999812996561,3cyclictest2998247-21kworker/u8:2+flush-179:019:10:250
2999812996554,9cyclictest3080382-21apt-get23:20:130
2999816996254,5cyclictest3044850-21latency_hist21:30:011
2999812996254,5cyclictest3012501-21kworker/u8:3+events_unbound19:55:000
2999812996251,9cyclictest3072410-21apt-get22:55:120
2999816996155,4cyclictest3060989-21kworker/u8:3+flush-179:022:30:231
2999812996154,5cyclictest3030537-21latency_hist20:45:010
2999812996150,9cyclictest3004763-21apt-get19:25:110
2999816996054,4cyclictest3051253-21kworker/u8:2+flush-179:023:00:271
2999816996054,4cyclictest3051253-21kworker/u8:2+flush-179:023:00:261
2999812996054,4cyclictest3092264-21kworker/u8:2+flush-179:000:15:170
2999816995950,6cyclictest3067445-21kworker/u8:1+flush-179:022:55:181
2999816995947,10cyclictest3092264-21kworker/u8:2+events_unbound00:30:151
2999812995949,8cyclictest3049886-21apt-get21:45:140
2999816995851,5cyclictest3070566-21kworker/u8:0+flush-179:022:50:211
2999816995851,5cyclictest3032122-21latency_hist20:50:011
2999816995848,6cyclictest1-21systemd20:25:001
2999812995851,5cyclictest3033682-21kworker/u8:0+flush-179:020:55:000
2999812995851,5cyclictest3030582-21kworker/u8:2+flush-179:020:55:220
2999816995750,5cyclictest3101164-21kworker/u8:3+flush-179:000:40:011
2999816995750,5cyclictest3101164-21kworker/u8:3+flush-179:000:40:001
299981699571,30cyclictest0-21swapper/119:15:141
2999812995752,4cyclictest3092264-21kworker/u8:2+flush-179:000:35:230
2999812995752,4cyclictest3092264-21kworker/u8:2+flush-179:000:35:230
2999812995749,7cyclictest3023899-21kworker/u8:2+flush-179:020:25:000
2999816995650,4cyclictest3092264-21kworker/u8:2+flush-179:000:05:251
2999816995645,8cyclictest3086448-21kworker/u8:1+flush-179:023:50:171
2999816995550,4cyclictest2998247-21kworker/u8:2+flush-179:019:30:241
2999816995547,6cyclictest1213033-21systemd-journal19:15:001
2999816995547,5cyclictest3051253-21kworker/u8:2+flush-179:021:50:151
2999816995545,8cyclictest3035271-21kworker/u8:1+events_unbound21:00:011
2999812995547,6cyclictest3062664-21kworker/u8:0+flush-179:022:35:200
2999812995546,7cyclictest3054906-21/usr/sbin/munin22:00:230
2999816995450,3cyclictest3048012-21kworker/u8:0+flush-179:021:45:241
2999812995437,15cyclictest2426-10pipewire-media-23:10:000
299981299541,32cyclictest3001568-21apt-get19:15:140
299981299540,51cyclictest1-21systemd20:30:000
2999816995348,3cyclictest3073806-21kworker/u8:3+flush-179:023:35:181
2999816995347,5cyclictest3067445-21kworker/u8:1+flush-179:022:45:171
2999812995347,5cyclictest1213033-21systemd-journal21:40:000
2999812995345,5cyclictest3043265-21latency_hist21:25:000
2999812995345,5cyclictest3043265-21latency_hist21:25:000
2999812995342,9cyclictest3007658-21kworker/u8:0+flush-179:020:10:010
2999816995246,4cyclictest3078517-21latency_hist23:15:011
2999816995244,5cyclictest3057840-21latency_hist22:10:011
299981699521,3cyclictest0-21swapper/121:05:141
2999812995247,4cyclictest3012501-21kworker/u8:3+flush-179:020:15:240
2999816995144,6cyclictest2998247-21kworker/u8:2+flush-179:019:45:011
2999816995143,6cyclictest3086448-21kworker/u8:1+flush-179:023:45:001
2999816995141,8cyclictest1213033-21systemd-journal23:35:001
2999812995143,5cyclictest3073806-21kworker/u8:3+flush-179:023:10:220
4577091500,13ptp4l441ktimers/319:10:013
2999816995042,6cyclictest3012438-21kworker/u8:1+events_unbound19:48:531
2999816994923,9cyclictest3099797-21apt-get00:20:121
2999812994940,7cyclictest3065794-21latency_hist22:35:010
2999812994940,7cyclictest3023899-21kworker/u8:2+flush-179:020:30:210
2999816994840,6cyclictest3093098-21latency_hist00:00:011
2999816994840,6cyclictest3027326-21kworker/u8:3+events_unbound20:45:001
2999816994839,7cyclictest3012501-21kworker/u8:3+flush-179:020:15:181
2999816994828,18cyclictest3020652-21latency_hist20:15:011
2999812994843,4cyclictest3051253-21kworker/u8:2+events_unbound22:40:130
2999812994843,3cyclictest3038523-21systemd-run21:10:000
2999812994839,7cyclictest3081749-21kworker/u8:2+flush-179:023:30:210
2999816994742,4cyclictest3073806-21kworker/u8:3+events_unbound23:20:211
2999816994740,5cyclictest1213033-21systemd-journal21:23:531
2999816994740,5cyclictest1213033-21systemd-journal21:23:531
2999816994738,6cyclictest3073806-21kworker/u8:3+flush-179:023:45:261
2999812994742,4cyclictest2998247-21kworker/u8:2+flush-179:019:20:130
2999812994741,4cyclictest3094763-21latency_hist00:05:000
2999812994741,4cyclictest3027326-21kworker/u8:3+flush-179:020:50:000
2999812994740,5cyclictest3062664-21kworker/u8:0+flush-179:022:30:010
2999812994737,8cyclictest3007658-21kworker/u8:0+flush-179:019:45:210
2999812994736,9cyclictest3035570-21apt-get21:00:140
2999812994724,19cyclictest0-21swapper/022:45:140
2999812994623,3cyclictest0-21swapper/021:45:010
299981999450,44cyclictest3094771-21turbostat00:05:003
2999816994540,4cyclictest3076971-21systemd-run23:09:591
2999812994537,6cyclictest3104324-21dump-pmu-power00:35:010
2999816994436,6cyclictest3060989-21kworker/u8:3+flush-179:022:25:211
2999812994439,4cyclictest3056493-21kworker/u8:0+flush-179:022:10:220
2999812994436,7cyclictest3060988-21kworker/u8:1+flush-179:022:18:580
2999817994340,2cyclictest0-21swapper/223:18:582
2999816994338,4cyclictest3023899-21kworker/u8:2+flush-179:020:30:151
2999812994337,4cyclictest3035271-21kworker/u8:1+flush-179:021:10:140
2999812994336,4cyclictest3054666-21basename22:00:000
2999816994217,23cyclictest0-21swapper/100:10:261
299981799410,2cyclictest0-21swapper/222:44:002
2999816994136,4cyclictest3062664-21kworker/u8:0+flush-179:022:35:221
2999812994136,3cyclictest3009274-21cron19:40:000
2999812994134,5cyclictest3093157-21kworker/u8:3+flush-179:000:05:220
2999812994134,5cyclictest3035271-21kworker/u8:1+events_unbound21:25:140
299981699401,32cyclictest0-21swapper/122:00:141
2999812994034,5cyclictest3060989-21kworker/u8:3+flush-179:022:20:230
2999812994033,4cyclictest3015869-21latency_hist20:00:000
2999812994031,7cyclictest3073806-21kworker/u8:3+flush-179:023:25:210
299981999390,37cyclictest0-21swapper/320:50:593
299981999380,37cyclictest0-21swapper/322:02:583
2999817993835,2cyclictest0-21swapper/223:38:592
299981799380,36cyclictest0-21swapper/220:18:592
299981799380,35cyclictest0-21swapper/221:40:592
2999816993835,2cyclictest0-21swapper/100:26:001
2999816993831,5cyclictest3092264-21kworker/u8:2+flush-179:000:20:001
2999812993833,4cyclictest1213033-21systemd-journal23:39:530
2999812993829,7cyclictest3091260-21apt-get23:55:000
2999817993734,2cyclictest0-21swapper/222:01:002
2999817993734,2cyclictest0-21swapper/200:19:562
299981799370,35cyclictest0-21swapper/219:32:592
299981799370,35cyclictest0-21swapper/200:10:002
2999816993734,2cyclictest3033682-21kworker/u8:0+events_unbound21:20:011
299981699370,1cyclictest0-21swapper/122:42:001
4577091360,3ptp4l441ktimers/321:40:123
2999819993634,1cyclictest0-21swapper/320:06:593
299981999360,35cyclictest0-21swapper/321:39:593
2999817993634,1cyclictest0-21swapper/221:20:002
299981799360,1cyclictest0-21swapper/223:15:002
299981799360,1cyclictest0-21swapper/220:11:002
2999819993533,1cyclictest0-21swapper/319:45:593
2999819993530,4cyclictest3097939-21turbostat00:15:013
299981999350,1cyclictest0-21swapper/322:06:593
299981999350,1cyclictest0-21swapper/320:17:593
2999817993532,2cyclictest0-21swapper/219:57:002
2999819993432,1cyclictest0-21swapper/323:44:563
2999819993432,1cyclictest0-21swapper/323:17:593
2999819993432,1cyclictest0-21swapper/322:00:003
2999817993432,1cyclictest0-21swapper/219:40:002
2999817993431,2cyclictest0-21swapper/222:27:592
2999817993431,2cyclictest0-21swapper/220:08:592
299981799340,29cyclictest0-21swapper/219:15:152
2999816993426,6cyclictest3027322-21kworker/u8:1+flush-179:020:35:181
2999816993426,6cyclictest3027322-21kworker/u8:1+flush-179:020:35:171
299981299341,29cyclictest3086750-21apt-get23:40:130
2999819993328,4cyclictest3052804-21turbostat21:55:003
2999817993331,1cyclictest0-21swapper/222:15:002
2999817993330,2cyclictest0-21swapper/223:47:592
2999817993330,2cyclictest0-21swapper/220:34:002
299981799330,2cyclictest0-21swapper/221:20:122
299981799330,2cyclictest0-21swapper/221:20:122
299981799330,2cyclictest0-21swapper/200:30:122
299981799330,1cyclictest0-21swapper/221:05:142
2999817993229,2cyclictest0-21swapper/219:26:592
299981799320,30cyclictest0-21swapper/221:29:592
299981799320,2cyclictest0-21swapper/221:50:122
2999816993226,4cyclictest3045736-21missed_timers21:30:181
2999816993225,5cyclictest3007658-21kworker/u8:0+flush-179:020:00:001
2999817993129,1cyclictest0-21swapper/223:31:592
299981799310,2cyclictest0-21swapper/220:46:592
299981799310,29cyclictest0-21swapper/222:45:132
2999816993122,6cyclictest2999703-21latency_hist19:10:031
2999812993125,4cyclictest3089331-21ls23:45:270
2999819993028,1cyclictest0-21swapper/322:43:593
2999819993027,2cyclictest0-21swapper/319:33:003
299981999300,1cyclictest0-21swapper/319:54:593
299981999300,1cyclictest0-21swapper/319:35:583
299981799300,2cyclictest0-21swapper/223:20:592
299981799300,2cyclictest0-21swapper/221:55:012
299981799300,2cyclictest0-21swapper/200:20:142
299981699300,29cyclictest0-21swapper/119:54:591
2999812993025,3cyclictest714-21Xorg00:20:590
2999819992927,1cyclictest0-21swapper/321:20:123
2999819992927,1cyclictest0-21swapper/321:20:123
2999819992926,2cyclictest0-21swapper/321:25:123
299981999290,28cyclictest0-21swapper/323:30:123
299981999290,27cyclictest0-21swapper/323:10:133
299981999290,27cyclictest0-21swapper/322:50:133
299981999290,27cyclictest0-21swapper/321:00:153
2999817992927,1cyclictest0-21swapper/219:50:002
2999817992926,2cyclictest0-21swapper/223:57:592
2999817992926,2cyclictest0-21swapper/223:00:132
2999817992926,2cyclictest0-21swapper/223:00:132
2999817992922,6cyclictest0-21swapper/221:37:592
299981799290,27cyclictest0-21swapper/223:50:132
299981799290,27cyclictest0-21swapper/200:10:132
2999816992924,4cyclictest3030582-21kworker/u8:2+flush-179:020:50:161
299981299290,26cyclictest3044860-21turbostat21:34:550
4577091280,6ptp4l441ktimers/323:10:003
2999819992825,2cyclictest0-21swapper/323:00:143
2999819992825,2cyclictest0-21swapper/323:00:143
2999819992825,2cyclictest0-21swapper/320:20:103
2999819992823,4cyclictest3046449-21turbostat21:35:003
299981999280,2cyclictest0-21swapper/320:30:033
299981999280,27cyclictest0-21swapper/321:15:153
299981999280,27cyclictest0-21swapper/300:30:133
299981999280,26cyclictest0-21swapper/323:50:133
299981999280,26cyclictest0-21swapper/320:35:593
299981999280,26cyclictest0-21swapper/320:35:593
2999817992825,2cyclictest0-21swapper/223:40:132
2999817992825,2cyclictest0-21swapper/222:57:002
2999817992825,2cyclictest0-21swapper/222:37:592
2999817992825,2cyclictest0-21swapper/220:38:592
2999817992825,2cyclictest0-21swapper/220:38:592
2999817992825,2cyclictest0-21swapper/200:25:102
299981799280,26cyclictest0-21swapper/221:33:592
299981799280,26cyclictest0-21swapper/220:20:102
4577091270,6ptp4l61490irq/134-eno1-TxRx-000:20:023
2999819992725,1cyclictest0-21swapper/322:16:003
2999819992725,1cyclictest0-21swapper/320:44:593
2999819992725,1cyclictest0-21swapper/300:28:593
2999817992724,2cyclictest0-21swapper/219:21:002
299981799270,1cyclictest0-21swapper/221:13:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-022:35:013
4577091260,6ptp4l441ktimers/319:30:003
4577091260,5ptp4l61490irq/134-eno1-TxRx-020:59:553
2999819992624,1cyclictest0-21swapper/321:12:593
299981999260,24cyclictest0-21swapper/323:55:043
2999817992623,2cyclictest0-21swapper/220:51:592
2999817992622,2cyclictest0-21swapper/222:23:592
2999817992622,2cyclictest0-21swapper/222:07:592
2999817992622,2cyclictest0-21swapper/220:02:592
299981799260,24cyclictest0-21swapper/221:48:592
299981799260,24cyclictest0-21swapper/219:45:002
231999260,14rtkit-daemon2999186-21ntp_states19:05:240
4577091250,3ptp4l441ktimers/323:24:563
4577091250,3ptp4l441ktimers/321:50:013
4577091250,3ptp4l441ktimers/319:45:003
4577091250,3ptp4l441ktimers/300:25:003
2999819992523,1cyclictest0-21swapper/320:47:593
299981999250,24cyclictest0-21swapper/322:20:583
2999817992522,2cyclictest0-21swapper/200:02:592
299981799250,2cyclictest0-21swapper/223:29:002
299981799250,2cyclictest0-21swapper/222:17:002
299981799250,2cyclictest0-21swapper/220:26:592
4577091240,4ptp4l61490irq/134-eno1-TxRx-023:49:553
4577091240,3ptp4l61490irq/134-eno1-TxRx-019:59:543
4577091240,3ptp4l441ktimers/323:30:013
4577091240,3ptp4l441ktimers/323:00:003
4577091240,3ptp4l441ktimers/322:29:563
4577091240,3ptp4l441ktimers/322:15:013
4577091240,3ptp4l441ktimers/320:05:003
4577091240,3ptp4l441ktimers/319:25:003
4577091240,3ptp4l441ktimers/319:14:573
4577091240,3ptp4l441ktimers/300:39:563
4577091240,3ptp4l441ktimers/300:39:563
2999819992422,1cyclictest0-21swapper/323:38:003
2999819992422,1cyclictest0-21swapper/319:16:593
2999819992422,1cyclictest0-21swapper/300:06:593
2999817992421,2cyclictest0-21swapper/219:11:592
4577091230,3ptp4l61490irq/134-eno1-TxRx-022:39:563
4577091230,3ptp4l441ktimers/322:49:553
4577091230,3ptp4l441ktimers/320:29:563
4577091230,3ptp4l441ktimers/320:14:553
2999819992321,1cyclictest0-21swapper/321:05:143
2999817992118,2cyclictest0-21swapper/219:54:552
2999817992118,2cyclictest0-21swapper/200:35:142
2999817992118,2cyclictest0-21swapper/200:35:142
2999817991915,2cyclictest0-21swapper/222:31:592
299981799189,7cyclictest0-21swapper/221:02:002
2999817991714,2cyclictest0-21swapper/220:58:592
2999817991512,2cyclictest0-21swapper/222:51:592
2999817991411,2cyclictest0-21swapper/223:05:132
299981799100,2cyclictest0-21swapper/220:40:062
29998179980,1cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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