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2026-07-29 - 12:57
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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 29, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
311436299142131,8cyclictest3137037-21kworker/u8:1+events_unbound21:20:001
311436099139127,9cyclictest1213033-21systemd-journal20:30:000
311436099138125,10cyclictest1213033-21systemd-journal19:15:010
311436299134121,10cyclictest1213033-21systemd-journal00:00:001
311436299134121,10cyclictest1213033-21systemd-journal00:00:001
311436099133121,8cyclictest3159601-21kworker/u8:2+flush-179:021:40:000
311436299132119,11cyclictest3120621-21latency_hist19:30:011
311436299130120,7cyclictest3161208-21latency_hist21:35:001
311436299128121,5cyclictest3210142-21kworker/u8:0+events_unbound00:10:011
311436299128121,5cyclictest3210142-21kworker/u8:0+events_unbound00:10:011
311436299125115,8cyclictest510-21rs:main1
311436299113107,5cyclictest3163122-21kworker/u8:0+events_unbound21:50:001
311436099112104,5cyclictest3129498-21kworker/u8:3+flush-179:020:10:160
311436099110105,3cyclictest3190122-21kworker/u8:1+flush-179:023:35:000
311436099110103,4cyclictest3137037-21kworker/u8:1+events_unbound21:15:260
31143609910796,8cyclictest3192240-21apt-get23:10:110
31143629910697,6cyclictest3178990-21latency_hist22:30:021
31143629910597,5cyclictest3183807-21kworker/u8:0+flush-179:022:55:241
31143609910598,5cyclictest3190122-21kworker/u8:1+events_unbound23:25:000
31143629910392,9cyclictest3195438-21apt-get23:20:131
31143629910294,5cyclictest3207966-21kworker/u8:3+flush-179:000:05:001
31143609910196,3cyclictest3129498-21kworker/u8:3+flush-179:020:20:230
31143629910093,5cyclictest3150052-21kworker/u8:0+flush-179:021:05:001
31143629910092,6cyclictest3207877-21kworker/u8:2+flush-179:000:20:251
31143609910092,5cyclictest3163122-21kworker/u8:0+events_unbound22:25:220
3114362999991,6cyclictest3176070-21apt-get22:20:121
3114360999992,5cyclictest3163122-21kworker/u8:0+events_unbound22:15:030
3114360999992,4cyclictest3153026-21kworker/u8:3+events_unbound21:10:260
3114360999990,7cyclictest3186978-21kworker/u8:3+events_unbound23:05:010
3114362999892,4cyclictest3112758-21kworker/u8:3+flush-179:019:10:181
3114362999890,6cyclictest3174460-21apt-get22:15:131
3114360999892,4cyclictest3169233-21kworker/u8:4+flush-179:022:05:210
3114360999891,4cyclictest3190122-21kworker/u8:1+events_unbound23:40:130
3114362999788,6cyclictest3137037-21kworker/u8:1+flush-179:021:10:011
3114360999791,4cyclictest3180570-21kworker/u8:1+flush-179:022:50:210
3114360999785,9cyclictest3132033-21latency_hist20:05:020
3114362999682,11cyclictest1213033-21systemd-journal19:45:001
3114360999689,4cyclictest3137037-21kworker/u8:1+flush-179:021:25:000
3114360999687,6cyclictest3100308-21kworker/u8:0+flush-179:019:15:220
3114362999588,5cyclictest3190122-21kworker/u8:1+events_unbound23:10:261
3114362999586,6cyclictest3137037-21kworker/u8:1+flush-179:021:25:221
3114360999589,4cyclictest3137037-21kworker/u8:1+flush-179:020:30:160
3114360999587,6cyclictest3207877-21kworker/u8:2+events_unbound00:25:000
3114360999585,7cyclictest3155248-21kworker/u8:0+flush-179:021:30:210
3114360999581,11cyclictest1213033-21systemd-journal19:50:000
3114362999489,4cyclictest3204983-21kworker/u8:1+events_unbound23:50:261
3114362999486,6cyclictest3198391-21kworker/u8:2+flush-179:023:40:001
3114362999481,10cyclictest3212738-21latency_hist00:15:001
3114362999387,4cyclictest3131453-21kworker/u8:1+events_unbound20:05:011
3114362999381,10cyclictest3163122-21kworker/u8:0+flush-179:022:00:001
3114362999379,12cyclictest3163122-21kworker/u8:0+flush-179:022:10:161
3114360999386,5cyclictest3144497-21kworker/u8:2+events_unbound20:55:010
3114360999385,6cyclictest3177402-21latency_hist22:25:010
3114360999382,5cyclictest3203376-21kworker/u8:0+events_unbound23:50:000
3114362999286,5cyclictest3213817-21kworker/u8:1+flush-179:000:30:221
3114360999285,5cyclictest3172404-21kworker/u8:1+flush-179:022:15:010
3114362999182,6cyclictest3137037-21kworker/u8:1+flush-179:020:50:261
3114362999177,5cyclictest3198391-21kworker/u8:2+events_unbound23:45:281
3114360999184,5cyclictest3177424-21kworker/u8:3+flush-179:022:45:000
3114360999181,7cyclictest3112758-21kworker/u8:3+flush-179:019:20:150
3114362999084,5cyclictest3213817-21kworker/u8:1+events_unbound00:35:231
3114362999084,4cyclictest3193593-21kworker/u8:2+flush-179:023:15:231
3114360999085,3cyclictest3204983-21kworker/u8:1+flush-179:000:05:240
3114360999085,3cyclictest3204983-21kworker/u8:1+flush-179:000:05:240
3114362998779,6cyclictest3174985-21kworker/u8:2+events_unbound22:35:001
3114360998779,6cyclictest3207898-40logrotate00:00:010
3114360998779,6cyclictest3207898-40logrotate00:00:010
3114360998777,7cyclictest3129498-21kworker/u8:3+flush-179:019:55:210
3114362998680,4cyclictest3161200-21kworker/u8:3+events_unbound21:45:011
3114362998680,4cyclictest3161200-21kworker/u8:3+events_unbound21:45:001
3114362998680,4cyclictest3119070-21kworker/u8:1+flush-179:019:35:201
3114362998680,4cyclictest3119070-21kworker/u8:1+flush-179:019:35:201
3114362998674,7cyclictest3121421-21kworker/u8:3+flush-179:019:30:211
3114360998679,5cyclictest3125651-21kworker/u8:0+flush-179:019:55:000
3114366998579,4cyclictest3209570-21turbostat00:05:003
3114362998578,5cyclictest3125651-21kworker/u8:0+flush-179:020:00:001
3114362998577,6cyclictest3137037-21kworker/u8:1+flush-179:020:40:231
3114360998578,5cyclictest3150052-21kworker/u8:0+flush-179:021:05:240
3114362998477,5cyclictest3174985-21kworker/u8:2+flush-179:022:35:231
3114362998474,7cyclictest3117425-21latency_hist19:20:011
3114360998475,6cyclictest3137037-21kworker/u8:1+flush-179:021:00:210
3114362998377,4cyclictest3144497-21kworker/u8:2+flush-179:020:55:241
3114360998376,5cyclictest3174985-21kworker/u8:2+events_unbound22:40:000
3114362998277,3cyclictest3190122-21kworker/u8:1+flush-179:023:05:181
3114362998175,5cyclictest3100308-21kworker/u8:0+events_unbound19:20:231
3114362998174,5cyclictest3163122-21kworker/u8:0+flush-179:022:05:141
3114362998165,14cyclictest3161200-21kworker/u8:3+flush-179:022:00:141
3114360998173,6cyclictest3174985-21kworker/u8:2+events_unbound23:00:000
3114360998172,6cyclictest3213817-21kworker/u8:1+flush-179:000:35:200
3114360997971,5cyclictest3135447-21kworker/u8:0+flush-179:020:15:160
3114360997967,4cyclictest3203376-21kworker/u8:0+events_unbound23:55:010
3114360997872,4cyclictest3129498-21kworker/u8:3+events_unbound20:05:230
3114360997870,5cyclictest3167576-21latency_hist21:55:000
3114362997770,5cyclictest3135447-21kworker/u8:0+flush-179:020:15:181
3114360997772,3cyclictest3213817-21kworker/u8:1+flush-179:000:15:230
3114360997769,5cyclictest3183807-21kworker/u8:0+flush-179:022:45:160
3114360997768,6cyclictest3198391-21kworker/u8:2+flush-179:023:35:170
3114360997768,5cyclictest3100308-21kworker/u8:0+events_unbound19:25:140
3114362997668,6cyclictest3137037-21kworker/u8:1+flush-179:020:45:251
3114360997668,5cyclictest3137037-21kworker/u8:1+flush-179:020:35:150
311436099760,73cyclictest3209520-21systemd-user-ru00:04:000
3114360997570,4cyclictest3161200-21kworker/u8:3+flush-179:021:55:260
3114360997565,8cyclictest1213033-21systemd-journal19:35:010
3114362997470,3cyclictest3190122-21kworker/u8:1+events_unbound23:40:191
3114362997467,5cyclictest3132956-21kworker/u8:2+events_unbound20:10:241
3114360997467,4cyclictest3174985-21kworker/u8:2+flush-179:022:30:200
3114360997465,6cyclictest3145034-21latency_hist20:45:010
3114362997367,4cyclictest3174985-21kworker/u8:2+events_unbound23:00:261
3114362997365,6cyclictest3207877-21kworker/u8:2+flush-179:000:30:001
3114360997365,5cyclictest3119070-21kworker/u8:1+flush-179:019:35:190
3114360997365,5cyclictest3119070-21kworker/u8:1+flush-179:019:35:190
3114362997262,7cyclictest3186943-21latency_hist22:55:011
3114362997260,6cyclictest3210142-21kworker/u8:0+events_unbound00:15:021
3114360997265,5cyclictest3137037-21kworker/u8:1+flush-179:021:25:140
3114362997162,6cyclictest3177424-21kworker/u8:3+flush-179:022:40:221
3114360997163,5cyclictest3193593-21kworker/u8:2+events_unbound23:15:150
3114360997064,5cyclictest3144497-21kworker/u8:2+flush-179:020:49:550
3114360997062,6cyclictest3190395-21apt-get23:05:140
3114360996963,4cyclictest3207877-21kworker/u8:2+events_unbound00:25:250
3114360996963,4cyclictest3124037-21kworker/u8:2+flush-179:019:40:200
3114360996961,6cyclictest3163122-21kworker/u8:0+flush-179:022:00:160
3114362996859,7cyclictest3129498-21kworker/u8:3+events_unbound20:05:031
3114362996859,7cyclictest3125651-21kworker/u8:0+flush-179:019:50:261
3114360996861,5cyclictest1213033-21systemd-journal00:35:020
3114362996758,6cyclictest3125651-21kworker/u8:0+flush-179:019:45:231
3114362996559,4cyclictest3137037-21kworker/u8:1+events_unbound20:30:211
3114362996557,5cyclictest3153026-21kworker/u8:3+events_unbound21:10:161
3114362996356,5cyclictest3137037-21kworker/u8:1+events_unbound21:20:251
3114365996056,3cyclictest0-21swapper/221:06:002
3114362996055,4cyclictest3137037-21kworker/u8:1+flush-179:020:35:161
3114362996053,4cyclictest3114220-21latency_hist19:10:021
3114360996056,3cyclictest3210142-21kworker/u8:0+flush-179:000:10:250
3114366995956,1cyclictest0-21swapper/321:05:593
3114360995851,5cyclictest3161200-21kworker/u8:3+events_unbound21:45:260
3114360995749,6cyclictest3161200-21kworker/u8:3+flush-179:021:40:240
3114360995749,6cyclictest3161200-21kworker/u8:3+flush-179:021:40:240
3114362995651,4cyclictest3129498-21kworker/u8:3+flush-179:020:20:251
3114362995550,4cyclictest3196247-21kworker/u8:0+flush-179:023:30:251
3114362995550,4cyclictest3183807-21kworker/u8:0+flush-179:022:49:551
3114362995550,4cyclictest3161200-21kworker/u8:3+flush-179:021:50:221
3114362995449,3cyclictest3138899-21kworker/u8:0+flush-179:020:25:151
3114362995244,6cyclictest1213033-21systemd-journal21:39:561
4577091510,13ptp4l441ktimers/319:10:003
3114360995146,4cyclictest3190122-21kworker/u8:1+flush-179:023:25:200
311436699490,41cyclictest3219386-21turbostat00:35:013
3114360994434,7cyclictest3144497-21kworker/u8:2+flush-179:020:55:140
311436599420,40cyclictest0-21swapper/220:22:582
311436699410,39cyclictest3175804-21turbostat22:20:013
311436599410,38cyclictest0-21swapper/220:41:592
311436699400,38cyclictest3186948-21turbostat22:55:003
311436599390,36cyclictest0-21swapper/223:41:002
311436599390,35cyclictest0-21swapper/220:07:592
311436599390,2cyclictest0-21swapper/200:32:592
311436599380,36cyclictest0-21swapper/220:02:592
311436599380,1cyclictest0-21swapper/220:48:002
3114366993731,5cyclictest3130447-21turbostat20:00:013
311436699370,36cyclictest0-21swapper/320:41:593
311436699370,30cyclictest0-21swapper/323:40:593
311436699370,2cyclictest0-21swapper/320:47:593
3114365993734,2cyclictest0-21swapper/220:33:002
3114365993733,2cyclictest0-21swapper/222:31:592
3114366993634,1cyclictest0-21swapper/320:32:593
3114366993632,2cyclictest0-21swapper/322:32:003
3114366993628,6cyclictest3135478-21turbostat20:15:003
311436699360,1cyclictest0-21swapper/320:07:593
311436699360,1cyclictest0-21swapper/320:02:593
3114365993632,2cyclictest0-21swapper/222:07:592
3114366993533,1cyclictest0-21swapper/319:31:593
3114366993532,2cyclictest0-21swapper/321:20:593
3114366993530,4cyclictest3172366-21turbostat22:09:593
3114366993529,5cyclictest3193587-21turbostat23:15:003
3114365993532,2cyclictest0-21swapper/221:21:002
3114365993532,2cyclictest0-21swapper/220:56:592
3114365993532,2cyclictest0-21swapper/219:31:592
3114365993532,2cyclictest0-21swapper/200:13:592
3114365993530,3cyclictest0-21swapper/221:40:582
3114365993530,3cyclictest0-21swapper/221:40:582
3114366993432,1cyclictest0-21swapper/320:56:593
3114366993432,1cyclictest0-21swapper/300:13:593
3114365993429,2cyclictest0-21swapper/222:37:002
3114366993329,2cyclictest0-21swapper/321:40:593
3114366993329,2cyclictest0-21swapper/321:40:583
3114366993325,6cyclictest3198363-21turbostat23:30:003
3114365993329,2cyclictest0-21swapper/223:52:592
3114365993329,2cyclictest0-21swapper/220:51:002
3114365993329,2cyclictest0-21swapper/220:35:592
311436599330,30cyclictest0-21swapper/221:19:002
3114366993230,1cyclictest0-21swapper/320:21:593
3114366993229,2cyclictest0-21swapper/323:58:593
3114366993229,2cyclictest0-21swapper/323:58:593
3114366993229,2cyclictest0-21swapper/323:53:003
3114366993229,2cyclictest0-21swapper/322:36:593
3114366993229,2cyclictest0-21swapper/322:26:003
3114366993229,2cyclictest0-21swapper/320:36:003
3114366993227,4cyclictest3128842-21turbostat19:55:003
3114365993229,2cyclictest0-21swapper/223:58:592
3114365993229,2cyclictest0-21swapper/223:58:592
3114365993229,2cyclictest0-21swapper/222:25:592
311436599320,29cyclictest0-21swapper/219:58:592
4577091310,7ptp4l441ktimers/319:50:003
4577091310,6ptp4l441ktimers/321:15:013
4577091310,10ptp4l61490irq/134-eno1-TxRx-021:04:553
3114366993129,1cyclictest0-21swapper/320:51:003
3114365993129,1cyclictest0-21swapper/223:15:002
3114365993128,2cyclictest0-21swapper/219:19:002
3114365993127,2cyclictest0-21swapper/221:28:582
3114365993127,2cyclictest0-21swapper/219:55:002
311436599310,29cyclictest0-21swapper/223:25:132
3114366993028,1cyclictest0-21swapper/319:19:003
3114366993027,2cyclictest0-21swapper/321:28:593
3114366993024,5cyclictest3169175-21turbostat22:00:013
311436699300,29cyclictest0-21swapper/321:19:003
311436699300,28cyclictest0-21swapper/323:20:163
311436699300,28cyclictest0-21swapper/321:45:133
311436699300,27cyclictest0-21swapper/300:35:133
3114365993025,2cyclictest0-21swapper/221:00:592
311436599300,2cyclictest0-21swapper/223:20:152
311436599300,2cyclictest0-21swapper/219:27:592
311436599300,2cyclictest0-21swapper/200:00:132
311436599300,28cyclictest0-21swapper/223:45:152
311436599300,28cyclictest0-21swapper/222:15:022
4577091290,6ptp4l441ktimers/323:10:003
4577091290,6ptp4l441ktimers/321:40:003
3114366992923,5cyclictest3167590-21turbostat21:55:003
311436699290,27cyclictest0-21swapper/322:20:133
311436699290,27cyclictest0-21swapper/300:20:143
311436699290,1cyclictest0-21swapper/323:03:003
311436699290,1cyclictest0-21swapper/319:20:133
3114365992927,1cyclictest0-21swapper/222:55:002
3114365992926,2cyclictest0-21swapper/200:16:592
3114365992925,2cyclictest0-21swapper/222:41:582
311436599290,2cyclictest0-21swapper/200:35:132
311436599290,27cyclictest0-21swapper/222:20:142
311436599290,27cyclictest0-21swapper/221:45:142
311436599290,27cyclictest0-21swapper/200:20:142
311436599290,27cyclictest0-21swapper/200:05:162
311436599290,27cyclictest0-21swapper/200:05:162
4577091280,7ptp4l441ktimers/322:15:003
4577091280,6ptp4l441ktimers/323:35:003
4577091280,5ptp4l441ktimers/320:20:003
4577091280,5ptp4l441ktimers/319:39:563
4577091280,5ptp4l441ktimers/319:39:563
3114366992826,1cyclictest0-21swapper/322:59:553
3114366992826,1cyclictest0-21swapper/322:41:583
3114366992826,1cyclictest0-21swapper/300:16:593
3114366992823,4cyclictest3120637-21turbostat19:30:003
311436699280,27cyclictest0-21swapper/300:05:163
311436699280,27cyclictest0-21swapper/300:05:163
311436699280,26cyclictest0-21swapper/323:45:153
3114365992825,2cyclictest0-21swapper/222:59:552
3114365992825,2cyclictest0-21swapper/221:10:132
3114365992824,2cyclictest0-21swapper/219:49:002
311436599280,2cyclictest0-21swapper/223:02:592
311436599280,2cyclictest0-21swapper/219:20:132
311436599280,26cyclictest0-21swapper/219:10:592
311436599280,25cyclictest0-21swapper/221:35:002
4577091270,5ptp4l441ktimers/323:40:023
4577091270,5ptp4l441ktimers/322:04:553
4577091270,5ptp4l441ktimers/319:44:563
4577091270,5ptp4l441ktimers/319:14:553
4577091270,5ptp4l441ktimers/300:29:553
311436699270,26cyclictest0-21swapper/320:28:593
311436699270,25cyclictest0-21swapper/323:19:593
3114365992724,2cyclictest0-21swapper/223:05:172
3114365992723,2cyclictest0-21swapper/222:00:002
311436599270,25cyclictest0-21swapper/221:54:592
311436599270,25cyclictest0-21swapper/220:28:592
311436599270,25cyclictest0-21swapper/200:29:592
4577091260,4ptp4l441ktimers/321:35:013
3114365992624,1cyclictest0-21swapper/223:34:592
311436599260,24cyclictest0-21swapper/223:37:592
3114365992523,1cyclictest0-21swapper/221:39:592
311436599250,24cyclictest0-21swapper/223:19:592
3114365992422,1cyclictest0-21swapper/220:20:002
3114365992420,2cyclictest0-21swapper/222:49:592
3114365992420,2cyclictest0-21swapper/220:12:592
3114366992321,1cyclictest0-21swapper/322:50:003
3114365992118,2cyclictest0-21swapper/219:35:112
3114365992118,2cyclictest0-21swapper/219:35:102
3114365991814,2cyclictest0-21swapper/222:00:592
3114365991714,2cyclictest0-21swapper/222:10:582
3114365991613,2cyclictest0-21swapper/219:44:592
3114360991612,3cyclictest0-21swapper/019:10:020
31143659930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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