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2026-03-30 - 11:56
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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 Mon Mar 30, 2026 00:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3184436998878,7cyclictest3223317-21latency_hist21:10:000
3184436998677,7cyclictest266-21systemd-journal00:00:000
3184436998474,7cyclictest266-21systemd-journal20:30:020
3184436998474,7cyclictest266-21systemd-journal20:30:020
3184439998274,6cyclictest3276623-21latency_hist23:55:001
3184439998171,7cyclictest266-21systemd-journal19:55:011
3184439998171,7cyclictest266-21systemd-journal19:55:001
3184439998073,5cyclictest3284955-21kworker/u8:2+events_unbound00:30:251
3184439997770,4cyclictest3276601-21kworker/u8:2+events_unbound00:00:151
3184439997768,6cyclictest3206837-21kworker/u8:1+events_unbound20:30:211
3184439997768,6cyclictest3206837-21kworker/u8:1+events_unbound20:30:201
3184439997670,4cyclictest3284955-21kworker/u8:2+events_unbound00:20:231
3184439997664,9cyclictest510-21rs:main1
3184439997469,4cyclictest3167972-21kworker/u8:3+flush-179:019:15:211
3184439997466,6cyclictest3262335-21kworker/u8:1+flush-179:023:20:261
3184439997466,6cyclictest3262335-21kworker/u8:1+flush-179:023:20:261
3184436997468,4cyclictest3215085-21kworker/u8:1+flush-179:020:45:140
3184439997363,7cyclictest3278274-21kworker/u8:1+flush-179:000:15:211
3184439997363,4cyclictest3231249-21kworker/u8:3+events_unbound21:35:221
3184439997266,4cyclictest3215085-21kworker/u8:1+events_unbound21:25:281
3184439997165,4cyclictest3190727-21kworker/u8:0+flush-179:019:50:011
3184439997164,5cyclictest3270236-21kworker/u8:3+flush-179:000:05:151
3184439997064,4cyclictest3167972-21kworker/u8:3+flush-179:019:25:161
3184439997057,10cyclictest266-21systemd-journal23:50:011
3184439997057,10cyclictest266-21systemd-journal23:50:011
3184439997048,13cyclictest3278274-21kworker/u8:1+events_unbound00:35:221
3184439996964,4cyclictest3239459-21kworker/u8:1+flush-179:022:15:261
3184439996962,6cyclictest3210047-21kworker/u8:0+events_unbound20:35:241
3184439996954,5cyclictest3256169-21kworker/u8:2+events_unbound23:00:181
3184436996961,6cyclictest3239483-21latency_hist22:00:000
3184439996861,5cyclictest3231249-21kworker/u8:3+events_unbound21:40:031
3184439996861,5cyclictest3210203-21kworker/u8:2+events_unbound21:15:011
3184436996859,7cyclictest3259127-21latency_hist23:00:020
3184439996762,4cyclictest3190727-21kworker/u8:0+events_unbound19:40:251
3184439996760,5cyclictest3229939-21apt-get21:30:111
3184439996757,7cyclictest3203663-21kworker/u8:2+events_unbound20:10:161
3184436996757,8cyclictest3281462-21latency_hist00:10:010
3184439996653,4cyclictest3198881-21kworker/u8:3+events_unbound19:55:131
3184439996560,4cyclictest3210047-21kworker/u8:0+flush-179:020:50:211
3184439996558,6cyclictest3276601-21kworker/u8:2+flush-179:023:55:211
3184439996558,5cyclictest3242916-21kworker/u8:0+events_unbound22:25:011
3184439996555,7cyclictest3229660-21kworker/u8:0+events_unbound22:00:141
3184439996554,8cyclictest510-21rs:main1
3184439996455,4cyclictest3265733-21kworker/u8:0+events_unbound23:25:221
3184439996360,2cyclictest3262335-21kworker/u8:1+flush-179:023:30:201
3184439996358,4cyclictest3242916-21kworker/u8:0+events_unbound22:10:221
3184439996358,4cyclictest3210203-21kworker/u8:2+flush-179:021:24:561
3184436996355,5cyclictest3260715-21latency_hist23:05:000
3184436996251,9cyclictest266-21systemd-journal21:45:000
3184439996157,3cyclictest3242916-21kworker/u8:0+events_unbound22:45:231
3184439996156,4cyclictest3262335-21kworker/u8:1+events_unbound23:35:141
3184439996151,8cyclictest3281980-21apt-get00:10:121
3184439996151,8cyclictest3192534-21apt-get19:35:111
3184436996050,8cyclictest3248234-21apt-get22:25:110
3184439995953,4cyclictest3257755-21kworker/u8:3+events_unbound23:10:231
3184436995949,8cyclictest3217200-21apt-get20:50:100
3184439995854,3cyclictest3210203-21kworker/u8:2+events_unbound21:15:241
3184439995853,4cyclictest3234760-21kworker/u8:2+flush-179:021:50:241
3184439995852,4cyclictest3246181-21kworker/u8:2+events_unbound22:30:151
3184439995851,5cyclictest3234760-21kworker/u8:2+events_unbound22:05:021
3184439995850,3cyclictest3239459-21kworker/u8:1+events_unbound22:20:151
3184439995843,13cyclictest3284955-21kworker/u8:2+flush-179:000:30:001
3184436995850,6cyclictest3267339-21apt-get23:25:120
3184439995652,3cyclictest3198881-21kworker/u8:3+events_unbound20:25:231
3184439995652,3cyclictest3198881-21kworker/u8:3+events_unbound20:25:231
3184439995651,4cyclictest3229660-21kworker/u8:0+flush-179:021:45:261
3184439995651,4cyclictest3193909-21kworker/u8:1+flush-179:020:05:201
3184439995650,5cyclictest3198881-21kworker/u8:3+events_unbound20:15:021
3184439995645,4cyclictest3270236-21kworker/u8:3+events_unbound23:40:261
3184436995650,5cyclictest3255932-21latency_hist22:50:010
3184436995542,11cyclictest266-21systemd-journal00:35:010
3184439995450,3cyclictest3215085-21kworker/u8:1+flush-179:020:45:231
3184439995450,3cyclictest3210047-21kworker/u8:0+events_unbound20:40:241
3184439995449,4cyclictest3251388-21kworker/u8:1+flush-179:022:35:161
3184439995449,4cyclictest3187554-21kworker/u8:2+flush-179:019:30:191
3184436995443,8cyclictest3232864-21latency_hist21:40:010
3184436995335,16cyclictest266-21systemd-journal22:55:000
3184441995249,2cyclictest0-21swapper/222:26:002
3184439995242,4cyclictest3257755-21kworker/u8:3+events_unbound23:15:241
3184436995246,4cyclictest714-21Xorg19:31:590
3184436995242,8cyclictest3273995-21diskstats23:45:150
3184436995242,8cyclictest3273995-21diskstats23:45:150
4577091510,13ptp4l441ktimers/319:10:013
3184436995141,8cyclictest266-21systemd-journal20:40:370
3184439995046,3cyclictest3242916-21kworker/u8:0+flush-179:022:50:191
3184444994947,1cyclictest0-21swapper/320:10:583
3184439994945,3cyclictest3210203-21kworker/u8:2+events_unbound21:00:171
3184439994944,4cyclictest3234760-21kworker/u8:2+flush-179:021:55:261
3184436994943,4cyclictest3206876-21latency_hist20:20:010
3184436994942,5cyclictest3190727-21kworker/u8:0+flush-179:019:40:230
3184436994942,5cyclictest3187511-21latency_hist19:20:010
3184439994843,4cyclictest3169625-21kworker/u8:0+flush-179:019:10:211
3184436994844,3cyclictest3210203-21kworker/u8:2+flush-179:020:55:140
3184436994839,6cyclictest3184433-21cyclictest23:11:000
3184439994641,4cyclictest3256169-21kworker/u8:2+events_unbound22:58:371
3184436994641,4cyclictest3264142-21apt-get23:15:110
3184436994640,4cyclictest501-21systemd-logind00:04:000
3184436994638,6cyclictest3185910-21latency_hist19:15:010
318443699460,3cyclictest3244527-21munin-run22:14:590
3184439994540,4cyclictest3198881-21kworker/u8:3+flush-179:020:00:271
3184439994539,4cyclictest3210203-21kworker/u8:2+events_unbound21:05:141
3184436994433,9cyclictest3212448-21diskstats20:35:150
3184436994430,11cyclictest3241090-21latency_hist22:05:020
3184439994338,4cyclictest3251388-21kworker/u8:1+flush-179:022:40:251
3184436994339,2cyclictest3210067-21munin-run20:30:010
3184436994339,2cyclictest3210067-21munin-run20:30:000
3184436994336,5cyclictest3251158-21grep22:35:000
3184436994332,9cyclictest3203682-21apt-get20:10:130
3184436994327,13cyclictest0-21swapper/020:00:000
3184436994232,6cyclictest0-21swapper/000:39:590
318443699420,40cyclictest3208486-21ls20:25:000
318444499410,39cyclictest3220129-21turbostat21:04:553
3184441994138,2cyclictest0-21swapper/223:44:592
3184436994134,5cyclictest3242973-21systemd-run22:10:020
3184441994037,2cyclictest0-21swapper/220:55:582
3184441994037,2cyclictest0-21swapper/220:02:002
3184436994034,4cyclictest3226497-21latency_hist21:20:020
3184436994033,5cyclictest1-21systemd21:24:590
318443699400,3cyclictest3195482-21turbostat19:49:550
318443699400,38cyclictest3284916-21sendmail00:20:000
3184444993934,4cyclictest3184303-21turbostat19:14:563
3184441993936,2cyclictest0-21swapper/219:35:592
3184436993934,3cyclictest3198661-21basename19:55:010
3184436993934,3cyclictest3198661-21basename19:55:000
3184436993933,4cyclictest1-21systemd21:50:000
3184436993930,7cyclictest3273461-21munin-run23:45:010
318443699391,2cyclictest714-21Xorg21:30:590
3184441993835,2cyclictest0-21swapper/223:10:592
318444199380,35cyclictest0-21swapper/222:44:542
318444199380,35cyclictest0-21swapper/221:41:002
318443699380,30cyclictest714-21Xorg23:24:590
318443699380,30cyclictest714-21Xorg23:24:590
318444499370,36cyclictest0-21swapper/320:00:593
3184441993734,2cyclictest0-21swapper/223:08:592
3184441993734,2cyclictest0-21swapper/222:53:592
3184441993734,2cyclictest0-21swapper/221:13:592
318444199370,35cyclictest0-21swapper/223:16:002
318444199370,35cyclictest0-21swapper/222:58:582
318444199370,35cyclictest0-21swapper/221:56:002
318444199370,35cyclictest0-21swapper/221:50:592
318443999370,36cyclictest0-21swapper/120:24:541
3184436993734,2cyclictest714-21Xorg22:37:000
3184436993733,3cyclictest3167972-21kworker/u8:3+flush-179:019:25:410
3184436993730,5cyclictest3203429-21munin-run20:10:010
318443699372,33cyclictest0-21swapper/000:10:140
318443699370,2cyclictest714-21Xorg21:01:000
3184444993634,1cyclictest0-21swapper/321:29:593
3184444993633,2cyclictest0-21swapper/321:19:593
3184444993633,2cyclictest0-21swapper/321:08:583
318444499360,35cyclictest0-21swapper/323:03:593
318444499360,35cyclictest0-21swapper/320:19:593
3184441993633,2cyclictest0-21swapper/222:30:582
318444199360,1cyclictest0-21swapper/221:23:592
318444199360,1cyclictest0-21swapper/220:50:592
3184436993631,3cyclictest3229716-21systemd-run21:29:590
3184436993627,7cyclictest3247719-21latency_hist22:25:020
318443699362,5cyclictest3270513-21apt-get23:35:130
4577091350,7ptp4l441ktimers/322:20:003
3184444993533,1cyclictest0-21swapper/323:30:593
3184444993533,1cyclictest0-21swapper/323:28:593
3184444993533,1cyclictest0-21swapper/321:14:553
3184444993533,1cyclictest0-21swapper/320:50:583
3184444993533,1cyclictest0-21swapper/319:44:543
3184444993532,2cyclictest0-21swapper/323:05:593
3184444993532,2cyclictest0-21swapper/322:52:593
3184441993532,2cyclictest0-21swapper/223:20:592
3184441993532,2cyclictest0-21swapper/223:20:592
3184441993532,2cyclictest0-21swapper/222:03:582
3184441993532,2cyclictest0-21swapper/219:43:592
318444199350,1cyclictest0-21swapper/221:45:582
3184439993530,4cyclictest3257755-21kworker/u8:3+events_unbound23:06:381
3184436993529,4cyclictest521-21gdbus23:30:230
3184436993529,4cyclictest3224937-21systemd-run21:15:010
3184444993432,1cyclictest0-21swapper/323:56:583
3184444993432,1cyclictest0-21swapper/321:39:543
3184444993432,1cyclictest0-21swapper/320:55:593
3184441993431,2cyclictest0-21swapper/223:49:552
3184441993431,2cyclictest0-21swapper/223:49:552
3184441993431,2cyclictest0-21swapper/223:34:002
3184441993431,2cyclictest0-21swapper/222:09:592
3184441993431,2cyclictest0-21swapper/220:47:002
3184441993431,2cyclictest0-21swapper/220:35:592
3184441993431,2cyclictest0-21swapper/219:20:592
318444199340,31cyclictest0-21swapper/200:35:012
3184436993430,3cyclictest3288100-21idleruntime-cro00:30:000
3184436993429,3cyclictest3286544-21systemd-run00:25:000
318443699341,31cyclictest0-21swapper/019:20:120
3184444993331,1cyclictest0-21swapper/322:33:593
3184441993331,1cyclictest0-21swapper/200:14:592
3184441993330,2cyclictest0-21swapper/200:36:592
3184436993328,4cyclictest3200508-21apt-get20:00:120
3184436993321,2cyclictest171rcu_preempt23:05:180
3184444993229,2cyclictest0-21swapper/300:13:593
3184441993228,2cyclictest0-21swapper/223:53:592
3184436993225,5cyclictest3234760-21kworker/u8:2+flush-179:021:55:010
4577091310,5ptp4l441ktimers/320:34:563
4577091310,5ptp4l441ktimers/320:34:563
3184441993129,1cyclictest0-21swapper/200:05:002
3184441993128,2cyclictest0-21swapper/219:17:592
3184441993128,2cyclictest0-21swapper/200:17:002
318444199310,24cyclictest0-21swapper/221:09:592
4577091300,6ptp4l61490irq/134-eno1-TxRx-021:24:553
3184444993028,1cyclictest0-21swapper/323:20:133
3184444993028,1cyclictest0-21swapper/323:20:133
3184444993028,1cyclictest0-21swapper/322:07:003
318444499300,2cyclictest3284910-21turbostat00:20:003
318444499300,1cyclictest0-21swapper/322:22:003
3184441993028,1cyclictest0-21swapper/223:39:592
318444199300,28cyclictest0-21swapper/220:15:022
3184436993028,1cyclictest0-21swapper/022:15:140
3184436993024,4cyclictest0-21swapper/022:45:000
4577091290,6ptp4l441ktimers/323:20:003
318444499290,28cyclictest0-21swapper/323:45:133
318444499290,28cyclictest0-21swapper/323:45:133
318444499290,28cyclictest0-21swapper/322:55:113
318444499290,28cyclictest0-21swapper/322:35:133
318444499290,27cyclictest3198656-21turbostat19:55:013
318444499290,27cyclictest3198656-21turbostat19:55:013
318444499290,27cyclictest0-21swapper/320:20:133
3184441992927,1cyclictest0-21swapper/219:34:592
3184441992926,2cyclictest0-21swapper/221:32:582
3184441992925,2cyclictest0-21swapper/222:17:582
318444199290,27cyclictest0-21swapper/219:55:112
318444199290,21cyclictest0-21swapper/219:50:592
318444199290,21cyclictest0-21swapper/219:50:592
3184436992919,6cyclictest0-21swapper/019:37:590
318443699290,28cyclictest0-21swapper/023:53:590
4577091280,5ptp4l441ktimers/321:35:013
3184444992822,5cyclictest3213503-21turbostat20:40:003
318444499280,27cyclictest0-21swapper/322:05:013
318444499280,27cyclictest0-21swapper/320:45:123
318444499280,27cyclictest0-21swapper/319:15:133
318444499280,26cyclictest0-21swapper/322:25:023
318444499280,26cyclictest0-21swapper/300:35:033
318444499280,26cyclictest0-21swapper/300:30:133
318444499280,1cyclictest0-21swapper/320:25:123
318444499280,1cyclictest0-21swapper/320:25:113
3184441992825,2cyclictest0-21swapper/223:02:002
3184441992825,2cyclictest0-21swapper/221:25:162
3184441992825,2cyclictest0-21swapper/220:41:582
3184441992824,2cyclictest0-21swapper/220:07:592
318444199280,2cyclictest0-21swapper/221:15:152
318444199280,26cyclictest0-21swapper/221:02:592
4577091270,6ptp4l61490irq/134-eno1-TxRx-019:50:013
4577091270,6ptp4l441ktimers/323:55:003
4577091270,5ptp4l441ktimers/320:00:003
4577091270,4ptp4l441ktimers/300:05:013
3184444992724,2cyclictest0-21swapper/319:21:593
318444499270,26cyclictest0-21swapper/321:45:133
318444499270,26cyclictest0-21swapper/321:40:023
3184441992724,2cyclictest0-21swapper/220:33:592
3184441992724,2cyclictest0-21swapper/220:33:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-022:00:003
4577091260,6ptp4l61490irq/134-eno1-TxRx-019:34:563
4577091260,6ptp4l441ktimers/323:39:563
4577091260,5ptp4l441ktimers/319:40:003
4577091260,5ptp4l441ktimers/319:29:563
4577091260,5ptp4l441ktimers/300:24:553
4577091260,4ptp4l441ktimers/321:54:563
4577091260,4ptp4l441ktimers/300:09:563
3184444992624,1cyclictest0-21swapper/322:46:583
3184441992623,2cyclictest0-21swapper/223:26:582
318444199260,2cyclictest0-21swapper/220:21:592
318444199260,24cyclictest0-21swapper/222:50:002
318444199260,24cyclictest0-21swapper/219:10:592
4577091250,4ptp4l441ktimers/323:45:023
3184441992523,1cyclictest0-21swapper/220:14:592
3184439992522,2cyclictest3184448-21latency_hist19:10:021
4577091240,5ptp4l61490irq/134-eno1-TxRx-023:14:563
4577091240,4ptp4l61490irq/134-eno1-TxRx-000:29:563
3184444992422,1cyclictest0-21swapper/322:10:593
3184444992421,2cyclictest3203440-21turbostat20:10:013
318444499240,1cyclictest0-21swapper/320:40:593
3184441992420,2cyclictest0-21swapper/219:47:592
3184444992321,1cyclictest0-21swapper/322:43:593
3184441992321,1cyclictest0-21swapper/200:26:592
3184441992321,1cyclictest0-21swapper/200:22:592
3184436992318,3cyclictest0-21swapper/019:10:020
3184441992219,2cyclictest0-21swapper/222:20:122
3184441992219,2cyclictest0-21swapper/220:25:592
3184441992219,2cyclictest0-21swapper/220:25:582
3184441992017,2cyclictest0-21swapper/200:08:592
3184441991917,1cyclictest0-21swapper/221:35:592
3184441991715,1cyclictest0-21swapper/219:27:592
3184441991714,2cyclictest0-21swapper/222:35:592
3184441991614,1cyclictest0-21swapper/222:14:002
31844419970,6cyclictest0-21swapper/223:57:022
31844419930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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