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2026-08-29 - 05:02
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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 Sat Aug 29, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
332736299139130,7cyclictest1213033-21systemd-journal23:30:001
332736299133124,7cyclictest3368876-21latency_hist21:20:011
332736099122113,7cyclictest3376813-21kworker/u8:0+events_unbound22:00:000
332736099121108,10cyclictest3420086-40mandb00:00:020
332736299119107,9cyclictest1213033-21systemd-journal23:40:011
332736099119105,11cyclictest3380016-21apt-get21:55:000
332736299116105,8cyclictest3386630-21latency_hist22:15:011
332736099115108,4cyclictest3352956-21latency_hist20:30:000
332736299110100,7cyclictest3420165-21cat00:00:021
33273629910897,9cyclictest3415290-21latency_hist23:45:011
33273629910796,8cyclictest3343398-21latency_hist20:00:021
332736099106100,4cyclictest3420131-21kworker/u8:1+flush-179:000:04:000
332736099106100,4cyclictest3339999-21kworker/u8:3+flush-179:019:50:240
33273629910595,8cyclictest3388242-21latency_hist22:20:011
33273609910597,4cyclictest3344967-21kworker/u8:0+flush-179:020:10:010
33273609910389,10cyclictest3416334-21kworker/u8:0+flush-179:000:15:010
33273629910297,4cyclictest3325687-21kworker/u8:0+flush-179:019:10:371
33273629910294,6cyclictest3360908-21latency_hist20:55:001
33273629910292,7cyclictest3400970-21latency_hist23:00:011
33273609910196,3cyclictest3416334-21kworker/u8:0+flush-179:000:20:150
33273609910189,9cyclictest3420131-21kworker/u8:1+flush-179:000:10:000
33273629910092,5cyclictest3404144-21latency_hist23:10:011
33273609910087,8cyclictest3378455-21kworker/u8:3+flush-179:022:00:210
3327362999994,4cyclictest3335165-21kworker/u8:3+events_unbound19:39:551
3327360999892,4cyclictest3378455-21kworker/u8:3+flush-179:022:05:170
3327360999883,7cyclictest3325687-21kworker/u8:0+events_unbound19:25:000
3327362999787,8cyclictest3430183-21apt-get00:30:101
3327360999687,6cyclictest3338353-21kworker/u8:1+flush-179:019:55:200
3327360999687,5cyclictest3416334-21kworker/u8:0+flush-179:000:20:010
3327360999685,8cyclictest3327203-21latency_hist19:10:010
3327360999685,7cyclictest3361929-21kworker/u8:1+events_unbound21:00:000
3327360999589,4cyclictest3387294-21kworker/u8:1+flush-179:022:45:240
3327360999585,7cyclictest3333596-21latency_hist19:30:010
3327360999488,4cyclictest3376813-21kworker/u8:0+flush-179:022:40:210
3327360999484,6cyclictest3368928-21kworker/u8:2+flush-179:021:30:140
3327360999378,9cyclictest3402533-21kworker/u8:2+flush-179:023:05:170
3327360999378,12cyclictest3359307-21kworker/u8:2+flush-179:020:50:010
3327360999376,5cyclictest3416334-21kworker/u8:0+events_unbound23:50:230
3327360999285,5cyclictest3387294-21kworker/u8:1+flush-179:022:20:160
3327362999185,4cyclictest3425396-21apt-get00:15:111
3327360999186,4cyclictest3332246-21kworker/u8:1+flush-179:019:30:170
3327360999185,4cyclictest3325687-21kworker/u8:0+events_unbound19:10:340
3327360999182,6cyclictest3387294-21kworker/u8:1+events_unbound22:25:150
3327360999083,5cyclictest3406716-21kworker/u8:0+flush-179:023:15:220
3327360999082,5cyclictest3376813-21kworker/u8:0+flush-179:022:15:160
3327360998983,4cyclictest3420131-21kworker/u8:1+flush-179:000:25:230
3327360998978,7cyclictest3420131-21kworker/u8:1+flush-179:000:30:200
3327362998883,4cyclictest3376813-21kworker/u8:0+events_unbound22:29:571
3327362998876,10cyclictest3427005-21apt-get00:20:111
3327360998882,4cyclictest3387294-21kworker/u8:1+flush-179:022:35:210
3327360998777,7cyclictest1213033-21systemd-journal21:15:010
3327362998581,3cyclictest3338353-21kworker/u8:1+flush-179:020:25:261
3327360998579,4cyclictest3359307-21kworker/u8:2+flush-179:021:00:240
3327360998577,6cyclictest3359578-21apt-get20:50:110
3327360998577,5cyclictest3387294-21kworker/u8:1+flush-179:023:00:140
3327362998465,14cyclictest1213033-21systemd-journal23:55:011
3327362998372,8cyclictest3368928-21kworker/u8:2+flush-179:021:35:001
3327360998373,7cyclictest3334469-21kworker/u8:0+flush-179:019:40:200
3327362998279,1cyclictest3402557-21latency_hist23:05:011
3327362998277,4cyclictest3338353-21kworker/u8:1+events_unbound20:01:001
3327362998273,7cyclictest3380005-21latency_hist21:55:011
3327360998272,8cyclictest3368928-21kworker/u8:2+events_unbound21:25:000
3327360998175,4cyclictest3352037-21kworker/u8:0+flush-179:020:40:370
3327360998163,10cyclictest3352037-21kworker/u8:0+events_unbound20:40:010
3327360998075,3cyclictest3338353-21kworker/u8:1+flush-179:019:45:160
3327360998069,8cyclictest3348147-21kworker/u8:4+events_unbound20:20:220
3327362997974,4cyclictest3347633-21kworker/u8:3+events_unbound20:15:271
3327360997972,4cyclictest3368928-21kworker/u8:2+events_unbound21:40:010
3327360997968,8cyclictest3368928-21kworker/u8:2+flush-179:021:25:220
3327362997872,4cyclictest3352037-21kworker/u8:0+flush-179:020:55:581
3327362997871,5cyclictest1213033-21systemd-journal22:50:281
3327362997871,5cyclictest1213033-21systemd-journal22:50:281
3327362997772,4cyclictest3392427-21kworker/u8:2+events_unbound22:31:281
3327362997771,4cyclictest3420131-21kworker/u8:1+events_unbound00:05:021
3327362997767,8cyclictest3364113-21latency_hist21:05:011
3327360997771,4cyclictest3404122-21kworker/u8:1+flush-179:023:25:220
3327362997671,4cyclictest3420131-21kworker/u8:1+events_unbound00:03:391
3327362997671,4cyclictest3338353-21kworker/u8:1+events_unbound20:21:271
332736299763,71cyclictest1-21systemd20:40:001
3327360997567,5cyclictest3374681-21kworker/u8:1+events_unbound21:45:010
3327360997562,10cyclictest3387294-21kworker/u8:1+flush-179:023:00:000
3327362997470,3cyclictest3404122-21kworker/u8:1+events_unbound23:14:271
3327362997470,3cyclictest3334469-21kworker/u8:0+events_unbound19:33:281
3327360997367,4cyclictest3428313-21kworker/u8:3+flush-179:000:35:150
3327360997367,4cyclictest3376813-21kworker/u8:0+flush-179:022:10:150
3327360997363,7cyclictest3335165-21kworker/u8:3+events_unbound19:39:590
3327362997268,3cyclictest3339944-21kworker/u8:2+events_unbound19:48:271
3327362997262,8cyclictest3407374-21kworker/u8:2+flush-179:023:20:231
3327362997257,11cyclictest1213033-21systemd-journal23:15:151
3327360997263,6cyclictest3378419-21latency_hist21:50:010
3327362997166,4cyclictest3412086-21kworker/u8:2+events_unbound23:46:301
3327362997166,4cyclictest3376813-21kworker/u8:0+flush-179:022:20:251
3327362997166,4cyclictest3374681-21kworker/u8:1+events_unbound21:40:171
3327360997165,4cyclictest3404122-21kworker/u8:1+flush-179:023:40:160
3327360997165,4cyclictest3339999-21kworker/u8:3+flush-179:020:00:140
3327360997062,5cyclictest3408925-21latency_hist23:25:010
3327360997061,7cyclictest3352037-21kworker/u8:0+events_unbound20:30:240
3327360996964,4cyclictest3412086-21kworker/u8:2+flush-179:023:35:240
3327362996861,6cyclictest3428313-21kworker/u8:3+flush-179:000:25:171
332736299680,66cyclictest1-21systemd22:45:011
3327360996754,10cyclictest3376813-21kworker/u8:0+flush-179:022:30:210
3327360996662,3cyclictest3387294-21kworker/u8:1+flush-179:022:50:230
3327360996662,3cyclictest3387294-21kworker/u8:1+flush-179:022:50:230
3327360996661,4cyclictest3364766-21kworker/u8:0+flush-179:021:09:550
3327360996661,4cyclictest3347633-21kworker/u8:3+flush-179:020:10:210
3327360996660,5cyclictest3325743-21kworker/u8:3+events_unbound19:15:250
3327360996660,4cyclictest3347633-21kworker/u8:3+flush-179:020:15:160
332736799650,63cyclictest0-21swapper/319:32:003
3327362996555,6cyclictest3338353-21kworker/u8:1+flush-179:020:30:161
3327362996550,11cyclictest1213033-21systemd-journal19:55:001
3327360996555,7cyclictest3404122-21kworker/u8:1+events_unbound23:45:120
332736799640,63cyclictest0-21swapper/300:20:583
3327367996361,1cyclictest0-21swapper/300:04:593
3327362996356,6cyclictest3325687-21kworker/u8:0+flush-179:019:20:151
3327360996357,4cyclictest3404129-21kworker/u8:3+events_unbound23:10:240
332736799620,55cyclictest0-21swapper/323:18:583
3327362995856,1cyclictest3378455-21kworker/u8:3+events_unbound21:55:021
3327360995847,8cyclictest3412097-21latency_hist23:35:000
3327362995645,8cyclictest3325743-21kworker/u8:3+events_unbound19:15:141
3327365995552,2cyclictest0-21swapper/200:02:002
3327362995550,4cyclictest714-21Xorg22:06:591
3327362995550,4cyclictest3432049-21kworker/u8:0+events_unbound00:37:461
3327362995349,3cyclictest3352037-21kworker/u8:0+events_unbound20:45:291
3327362995145,5cyclictest3334469-21kworker/u8:0+events_unbound19:45:011
3327362994938,9cyclictest1213033-21systemd-journal21:35:011
4577091480,13ptp4l61490irq/134-eno1-TxRx-019:09:553
3327362994839,7cyclictest3372054-21latency_hist21:30:011
3327362994736,9cyclictest1213033-21systemd-journal19:30:011
3327365994644,1cyclictest0-21swapper/219:54:592
3327362994637,7cyclictest3352037-21kworker/u8:0+events_unbound20:40:401
3327362994440,3cyclictest3376813-21kworker/u8:0+events_unbound22:01:131
3327362994436,6cyclictest3347633-21kworker/u8:3+flush-179:020:15:001
3327362994336,5cyclictest3387294-21kworker/u8:1+events_unbound22:45:221
3327367994236,4cyclictest3328823-21turbostat19:15:003
332736799410,39cyclictest3397787-21turbostat22:50:013
3327362994136,4cyclictest3364766-21kworker/u8:0+events_unbound21:10:491
3327362994136,3cyclictest3346589-21munin-run20:10:001
332736799400,38cyclictest3405744-21turbostat23:15:013
332736799400,38cyclictest3389843-21turbostat22:25:003
3327362994035,3cyclictest3412134-21systemd-run23:35:011
3327367993937,1cyclictest0-21swapper/320:05:003
332736799390,4cyclictest3413691-21turbostat23:40:013
332736799390,4cyclictest3404157-21turbostat23:10:003
3327367993832,5cyclictest3356150-21turbostat20:40:013
3327367993832,4cyclictest3376850-21turbostat21:45:013
332736799380,3cyclictest3333612-21turbostat19:30:003
332736799380,37cyclictest3383475-21turbostat22:05:013
332736599380,36cyclictest0-21swapper/223:02:592
3327367993735,1cyclictest0-21swapper/320:22:003
3327367993732,4cyclictest3420060-21turbostat00:00:013
3327367993732,4cyclictest3372071-21turbostat21:30:013
3327367993730,5cyclictest3416883-21turbostat23:49:593
332736799370,36cyclictest0-21swapper/300:36:583
3327365993734,2cyclictest0-21swapper/223:12:592
3327365993734,2cyclictest0-21swapper/200:39:552
3327362993733,3cyclictest3364766-21kworker/u8:0+events_unbound21:21:591
3327362993733,2cyclictest714-21Xorg22:36:591
3327362993732,4cyclictest3376813-21kworker/u8:0+events_unbound21:47:121
3327360993732,3cyclictest3368862-21sendmail21:20:000
3327367993633,2cyclictest0-21swapper/321:12:593
3327367993630,5cyclictest3332028-21turbostat19:25:003
332736799360,35cyclictest0-21swapper/300:18:003
3327365993633,2cyclictest0-21swapper/200:08:592
332736599360,1cyclictest0-21swapper/220:30:592
3327365993533,1cyclictest0-21swapper/222:19:592
3327365993533,1cyclictest0-21swapper/222:09:592
3327365993532,2cyclictest0-21swapper/222:43:592
3327362993531,3cyclictest3359307-21kworker/u8:2+events_unbound21:08:211
4577091340,3ptp4l61490irq/134-eno1-TxRx-022:10:113
3327367993432,1cyclictest0-21swapper/322:09:563
3327367993432,1cyclictest0-21swapper/300:09:543
3327365993431,2cyclictest0-21swapper/219:17:002
3327367993331,1cyclictest0-21swapper/323:31:593
3327367993331,1cyclictest0-21swapper/322:42:593
3327367993331,1cyclictest0-21swapper/321:54:593
3327367993331,1cyclictest0-21swapper/321:18:593
3327367993331,1cyclictest0-21swapper/320:46:593
3327367993327,4cyclictest3431532-21turbostat00:35:003
3327365993330,2cyclictest0-21swapper/223:47:002
3327365993330,2cyclictest0-21swapper/219:38:002
3327365993329,2cyclictest0-21swapper/222:04:552
332736599330,30cyclictest0-21swapper/223:55:002
3327367993227,4cyclictest3338398-21turbostat19:45:003
3327367993225,6cyclictest3429942-21turbostat00:30:003
3327365993229,2cyclictest0-21swapper/222:11:592
3327365993229,2cyclictest0-21swapper/219:42:582
3327362993228,3cyclictest3420131-21kworker/u8:1+events_unbound00:13:431
3327367993129,1cyclictest0-21swapper/321:06:593
3327367993129,1cyclictest0-21swapper/320:28:583
3327365993128,2cyclictest0-21swapper/220:17:592
3327365993128,2cyclictest0-21swapper/219:13:582
332736599310,29cyclictest0-21swapper/219:55:042
4577091300,7ptp4l441ktimers/323:04:593
4577091300,6ptp4l441ktimers/320:55:003
3327367993028,1cyclictest0-21swapper/323:45:003
3327367993028,1cyclictest0-21swapper/321:46:593
3327367993028,1cyclictest0-21swapper/320:10:003
3327367993027,2cyclictest0-21swapper/322:55:133
3327365993029,1cyclictest0-21swapper/221:09:592
3327365993027,2cyclictest0-21swapper/222:48:592
3327365993027,2cyclictest0-21swapper/222:25:592
3327367992924,4cyclictest3373661-21turbostat21:35:003
332736799290,28cyclictest0-21swapper/322:15:123
332736799290,1cyclictest0-21swapper/323:24:563
3327365992926,2cyclictest0-21swapper/221:47:592
332736599290,28cyclictest0-21swapper/221:00:132
332736599290,27cyclictest0-21swapper/223:05:582
332736599290,27cyclictest0-21swapper/222:50:142
332736599290,27cyclictest0-21swapper/222:50:142
332736599290,27cyclictest0-21swapper/220:55:132
332736599290,27cyclictest0-21swapper/220:45:112
332736599290,27cyclictest0-21swapper/220:05:112
332736599290,27cyclictest0-21swapper/200:30:122
4577091280,6ptp4l61490irq/134-eno1-TxRx-021:40:013
4577091280,6ptp4l441ktimers/320:15:003
4577091280,6ptp4l441ktimers/319:55:013
4577091280,6ptp4l441ktimers/319:50:013
4577091280,6ptp4l441ktimers/300:15:013
332736799280,2cyclictest0-21swapper/319:55:013
332736799280,26cyclictest0-21swapper/323:50:123
332736799280,26cyclictest0-21swapper/322:30:133
332736799280,26cyclictest0-21swapper/321:55:123
332736799280,26cyclictest0-21swapper/321:20:113
332736799280,26cyclictest0-21swapper/320:30:123
332736799280,26cyclictest0-21swapper/320:15:133
3327365992826,1cyclictest0-21swapper/223:19:592
3327365992825,2cyclictest0-21swapper/200:20:122
332736599280,2cyclictest0-21swapper/220:02:592
332736599280,26cyclictest0-21swapper/223:00:002
332736599280,26cyclictest0-21swapper/221:55:012
332736599280,1cyclictest0-21swapper/223:25:132
4577091270,6ptp4l441ktimers/319:19:563
4577091270,5ptp4l61490irq/134-eno1-TxRx-022:55:003
4577091270,5ptp4l61490irq/134-eno1-TxRx-022:55:003
4577091270,4ptp4l441ktimers/320:59:553
3327367992725,1cyclictest0-21swapper/322:25:593
3327367992725,1cyclictest0-21swapper/321:01:593
3327367992725,1cyclictest0-21swapper/319:35:593
3327367992724,2cyclictest0-21swapper/322:38:593
3327365992724,2cyclictest0-21swapper/219:47:592
3327365992724,2cyclictest0-21swapper/219:23:592
3327365992724,2cyclictest0-21swapper/200:16:002
332736599270,2cyclictest0-21swapper/219:28:582
332736599270,1cyclictest0-21swapper/221:34:002
3327365992623,2cyclictest0-21swapper/200:12:582
332736599260,2cyclictest0-21swapper/221:11:592
332736599260,24cyclictest0-21swapper/223:45:002
332736599260,24cyclictest0-21swapper/223:24:582
332736599260,24cyclictest0-21swapper/221:38:592
332736599260,24cyclictest0-21swapper/220:50:122
4577091250,4ptp4l441ktimers/320:45:013
3327365992522,2cyclictest0-21swapper/220:37:592
3327365992522,2cyclictest0-21swapper/200:26:582
332736599250,1cyclictest0-21swapper/222:40:002
231999250,9rtkit-daemon483-21cron19:09:001
4577091240,4ptp4l61490irq/134-eno1-TxRx-023:29:553
3327365992321,1cyclictest0-21swapper/223:40:002
3327365992321,1cyclictest0-21swapper/222:24:592
3327365992320,2cyclictest0-21swapper/221:50:592
3327365992219,2cyclictest0-21swapper/220:42:592
3327365992119,1cyclictest0-21swapper/221:18:002
3327365992118,2cyclictest0-21swapper/221:40:112
3327365992118,2cyclictest0-21swapper/220:28:592
3327365992017,2cyclictest0-21swapper/221:26:592
3327365991916,2cyclictest0-21swapper/223:57:582
3327365991815,2cyclictest0-21swapper/221:24:592
3327365991815,2cyclictest0-21swapper/220:22:592
3327365991715,1cyclictest0-21swapper/219:34:592
3327365991613,2cyclictest0-21swapper/220:11:592
332736599119,1cyclictest0-21swapper/222:34:592
33273659974,2cyclictest0-21swapper/223:33:002
33273659920,1cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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