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2026-05-08 - 15:26
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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 376 highest latencies:
System rackeslot6.osadl.org (updated Fri May 08, 2026 12:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3288736999690,4cyclictest3376565-21kworker/u8:1+events_unbound12:14:591
3288736999690,4cyclictest3376565-21kworker/u8:1+events_unbound12:14:591
3288734999684,9cyclictest3322702-21kworker/u8:1+flush-179:009:00:010
3288734999684,9cyclictest3322702-21kworker/u8:1+flush-179:009:00:010
3288734999469,6cyclictest3337322-21latency_hist09:40:010
3288736999179,9cyclictest3306472-21kworker/u8:1+flush-179:008:05:001
3288736998646,28cyclictest3391961-21diskstats12:25:141
3288734998677,7cyclictest3376572-21latency_hist11:40:020
3288736998169,9cyclictest3371288-21apt-get11:25:021
3288736998066,12cyclictest3378141-21kworker/u8:4+flush-179:012:00:001
3288736998059,18cyclictest3363983-21kworker/u8:0+flush-179:011:20:001
3288734997973,5cyclictest3314762-21kworker/u8:3+flush-179:008:35:000
3288734997972,5cyclictest3383217-21kworker/u8:2+flush-179:012:15:150
3288734997869,6cyclictest3386378-21latency_hist12:10:010
3288734997867,9cyclictest3365160-21apt-get11:05:100
3288734997768,6cyclictest3353756-21latency_hist10:30:020
3288734997668,5cyclictest3383217-21kworker/u8:2+flush-179:012:00:140
3288734997565,7cyclictest3371272-21latency_hist11:25:020
3288736997466,6cyclictest3322702-21kworker/u8:1+flush-179:010:25:231
3288736997365,6cyclictest3396203-21latency_hist12:40:021
3288736997365,6cyclictest3396203-21latency_hist12:40:011
3288736997363,7cyclictest3381596-21latency_hist11:55:011
3288734997266,4cyclictest3376565-21kworker/u8:1+flush-179:011:45:170
3288734997265,4cyclictest3294989-21kworker/u8:0+flush-179:008:20:240
3288734997165,5cyclictest3371405-21kworker/u8:3+flush-179:011:40:160
3288734997064,4cyclictest3378141-21kworker/u8:4+flush-179:011:55:190
3288734997062,6cyclictest714-21Xorg08:07:590
3288736996860,6cyclictest3383222-21kworker/u8:3+flush-179:012:35:001
3288736996860,6cyclictest3363983-21kworker/u8:0+events_unbound11:20:131
328873699680,26cyclictest714-21Xorg11:09:591
3288736996760,5cyclictest3275438-21kworker/u8:1+flush-179:007:25:211
3288734996760,5cyclictest3310562-21kworker/u8:2+events_unbound08:45:140
3288734996663,2cyclictest714-21Xorg07:47:590
3288734996660,5cyclictest3363983-21kworker/u8:0+flush-179:011:15:000
3288734996560,4cyclictest3343998-21kworker/u8:3+flush-179:010:24:550
3288734996557,6cyclictest3347368-21kworker/u8:2+events_unbound10:10:010
3288734996556,7cyclictest510-21rs:main0
3288734996459,4cyclictest3343998-21kworker/u8:3+events_unbound10:15:230
3288734996458,4cyclictest3356986-21kworker/u8:1+flush-179:010:59:560
3288734996458,4cyclictest3356986-21kworker/u8:1+flush-179:010:59:550
3288736996353,8cyclictest3378195-21http11:45:001
3288734996358,3cyclictest3343998-21kworker/u8:3+flush-179:010:50:160
3288734996357,4cyclictest3383222-21kworker/u8:3+flush-179:012:35:160
3288734996357,4cyclictest3383222-21kworker/u8:3+flush-179:012:35:150
3288736996254,6cyclictest3275438-21kworker/u8:1+events_unbound07:15:021
3288734996156,4cyclictest3287148-21kworker/u8:2+flush-179:007:20:020
3288736996050,7cyclictest3310562-21kworker/u8:2+flush-179:009:15:221
3288734996056,3cyclictest3310562-21kworker/u8:2+flush-179:009:20:230
3288734996056,3cyclictest3310562-21kworker/u8:2+flush-179:009:20:230
3288734996053,6cyclictest3356986-21kworker/u8:1+flush-179:010:45:250
3288734996045,12cyclictest1213033-21systemd-journal09:10:000
3288736995954,3cyclictest3290267-21kworker/u8:3+flush-179:007:35:241
3288736995950,6cyclictest3355325-21kworker/u8:0+flush-179:010:50:101
3288736995949,8cyclictest3292089-21apt-get07:20:101
3288736995851,5cyclictest3332543-21latency_hist09:25:001
3288736995851,5cyclictest3332543-21latency_hist09:25:001
3288736995849,7cyclictest3322670-21latency_hist08:55:011
3288734995853,4cyclictest3294989-21kworker/u8:0+flush-179:007:29:550
3288734995850,6cyclictest3371405-21kworker/u8:3+flush-179:011:30:000
3288734995850,6cyclictest3305171-21apt-get08:00:090
3288736995749,5cyclictest3316544-21/usr/sbin/munin08:35:161
3288736995749,5cyclictest3316544-21/usr/sbin/munin08:35:161
3288736995747,7cyclictest3352170-21latency_hist10:25:011
3288736995745,9cyclictest1213033-21systemd-journal10:40:141
3288736995743,13cyclictest3310562-21kworker/u8:2+flush-179:008:50:001
328873699570,6cyclictest3303359-21apt-key07:55:011
3288734995648,5cyclictest3358538-21latency_hist10:45:010
3288734995647,8cyclictest3383222-21kworker/u8:3+events_unbound12:25:150
3288734995546,5cyclictest3363983-21kworker/u8:0+events_unbound11:05:010
3288739995451,2cyclictest0-21swapper/207:56:592
3288736995445,7cyclictest3389829-21apt-get12:20:111
3288734995448,5cyclictest3310562-21kworker/u8:2+events_unbound08:15:260
3288739995351,1cyclictest0-21swapper/208:05:002
3288734995343,7cyclictest3387997-21kworker/u8:0+events_unbound12:25:010
3288736995245,5cyclictest3356986-21kworker/u8:1+events_unbound10:45:231
3288736995243,7cyclictest3290460-21/usr/sbin/munin07:15:161
3288734995247,4cyclictest3310562-21kworker/u8:2+events_unbound08:50:240
3288734995246,5cyclictest3287148-21kworker/u8:2+flush-179:007:44:550
3288736995131,18cyclictest3376570-21tr11:40:001
3288734995145,4cyclictest3327481-21kworker/u8:3+events_unbound09:10:140
3288734995145,4cyclictest3322702-21kworker/u8:1+events_unbound10:00:170
3288734995144,5cyclictest3332578-21kworker/u8:0+events_unbound09:30:240
3288736995043,5cyclictest3334367-21kworker/u8:2+flush-179:009:40:201
3288736995041,7cyclictest3322702-21kworker/u8:1+flush-179:009:00:001
3288736995041,7cyclictest3322702-21kworker/u8:1+flush-179:009:00:001
3288736995039,8cyclictest1213033-21systemd-journal10:10:141
3288734995043,4cyclictest3322702-21kworker/u8:1+flush-179:009:50:010
3288734995040,6cyclictest3320164-21kworker/u8:0+flush-179:009:00:210
328873499501,47cyclictest1-21systemd12:35:000
3288736994940,7cyclictest3287148-21kworker/u8:2+flush-179:007:50:001
3288734994944,4cyclictest3310562-21kworker/u8:2+events_unbound08:35:230
3288734994944,4cyclictest3310562-21kworker/u8:2+events_unbound08:35:230
3288734994941,5cyclictest3287148-21kworker/u8:2+flush-179:007:20:140
4577091480,13ptp4l441ktimers/307:10:003
3288736994837,9cyclictest3356986-21kworker/u8:1+flush-179:011:00:011
3288736994837,9cyclictest3356986-21kworker/u8:1+flush-179:011:00:011
3288734994845,2cyclictest3334367-21kworker/u8:2+events_unbound09:50:210
3288734994842,5cyclictest3294989-21kworker/u8:0+flush-179:008:30:000
3288734994840,7cyclictest3360785-21kworker/u8:2+events_unbound11:15:140
3288736994738,7cyclictest3298528-21/usr/sbin/munin07:40:231
3288736994736,9cyclictest3314975-21apt-get08:30:101
3288734994743,3cyclictest3378141-21kworker/u8:4+flush-179:011:50:170
3288734994741,5cyclictest3290267-21kworker/u8:3+flush-179:007:35:150
328874199460,44cyclictest3340764-21turbostat09:50:003
3288734994639,5cyclictest3287148-21kworker/u8:2+flush-179:007:50:190
3288736994541,3cyclictest3306472-21kworker/u8:1+flush-179:008:05:251
3288736994537,6cyclictest1213033-21systemd-journal09:39:131
3288736994523,2cyclictest0-21swapper/109:05:121
3288734994536,7cyclictest510-21rs:main0
3288734994536,7cyclictest510-21rs:main0
3288736994439,3cyclictest3380046-21systemd-run11:50:011
3288736994437,5cyclictest3355325-21kworker/u8:0+events_unbound10:35:251
3288736994334,7cyclictest3339427-21apt-get09:45:111
3288736994333,7cyclictest3310562-21kworker/u8:2+events_unbound08:20:151
3288736994320,4cyclictest3319584-21latency_hist08:45:001
3288736994317,6cyclictest1213033-21systemd-journal10:30:011
3288734994338,4cyclictest3294989-21kworker/u8:0+flush-179:007:30:250
3288736994237,4cyclictest3322702-21kworker/u8:1+flush-179:009:55:211
3288736994232,7cyclictest3345542-21latency_hist10:05:021
328873699421,28cyclictest3383461-21apt-get12:00:141
3288734994236,5cyclictest3352215-21kworker/u8:2+flush-179:010:30:260
328873499420,40cyclictest3303053-21turbostat07:59:560
3288736994135,5cyclictest3294989-21kworker/u8:0+events_unbound08:20:001
3288734994130,7cyclictest3317947-21kworker/u8:1+flush-179:008:40:150
328873499411,3cyclictest3348980-21idleruntime-cro10:15:000
328873499411,38cyclictest714-21Xorg09:16:590
3288741994033,5cyclictest3374989-21turbostat11:35:013
3288736994034,5cyclictest3320164-21kworker/u8:0+flush-179:009:00:141
3288736994033,5cyclictest3348956-21kworker/u8:0+flush-179:010:20:001
3288736994027,12cyclictest3345561-21apt-get10:05:031
3288734994036,3cyclictest3287148-21kworker/u8:2+flush-179:007:10:120
328873499401,37cyclictest714-21Xorg09:28:590
328874199390,4cyclictest3350596-21turbostat10:20:003
3288736993932,5cyclictest3383222-21kworker/u8:3+flush-179:012:05:151
3288736993930,6cyclictest0-21swapper/112:16:001
3288734993935,3cyclictest3383222-21kworker/u8:3+events_unbound12:10:160
3288734993935,3cyclictest3383222-21kworker/u8:3+events_unbound12:10:150
3288734993935,3cyclictest3363983-21kworker/u8:0+flush-179:011:30:240
328873499392,33cyclictest3339217-21apt-key09:45:020
3288739993835,2cyclictest0-21swapper/209:52:592
3288739993834,2cyclictest0-21swapper/212:33:002
3288736993827,10cyclictest3322702-21kworker/u8:1+flush-179:009:25:571
3288741993735,1cyclictest0-21swapper/307:36:003
328874199370,36cyclictest0-21swapper/311:48:593
3288739993734,2cyclictest0-21swapper/209:26:592
3288739993733,2cyclictest0-21swapper/209:44:592
328873999370,35cyclictest0-21swapper/207:29:552
3288736993730,5cyclictest3363983-21kworker/u8:0+flush-179:011:00:211
328873699370,1cyclictest0-21swapper/109:51:591
3288734993734,2cyclictest0-21swapper/009:59:590
3288741993634,1cyclictest0-21swapper/307:53:593
328874199360,35cyclictest0-21swapper/312:26:593
328874199360,35cyclictest0-21swapper/311:29:553
328874199360,35cyclictest0-21swapper/308:43:003
3288736993632,3cyclictest3296625-21systemd-run07:35:011
3288741993533,1cyclictest0-21swapper/310:38:593
3288741993533,1cyclictest0-21swapper/308:33:593
328874199350,1cyclictest0-21swapper/312:11:593
328874199350,1cyclictest0-21swapper/312:11:583
3288739993532,2cyclictest0-21swapper/211:56:592
3288739993532,2cyclictest0-21swapper/211:44:592
3288739993532,2cyclictest0-21swapper/210:20:592
3288739993532,2cyclictest0-21swapper/209:33:582
3288736993532,2cyclictest0-21swapper/111:35:001
3288741993432,1cyclictest0-21swapper/311:09:583
3288741993432,1cyclictest0-21swapper/309:50:593
3288739993431,2cyclictest0-21swapper/212:36:592
3288739993431,2cyclictest0-21swapper/212:36:592
3288739993430,2cyclictest0-21swapper/211:02:592
3288736993429,3cyclictest3302096-21fschecks_time07:50:151
3288736993416,16cyclictest3949735-21sshd09:32:151
3288741993332,1cyclictest0-21swapper/309:04:563
3288741993328,4cyclictest3334136-21turbostat09:34:553
3288739993330,2cyclictest0-21swapper/212:14:562
3288739993330,2cyclictest0-21swapper/212:14:552
3288739993330,2cyclictest0-21swapper/210:47:582
3288739993330,2cyclictest0-21swapper/209:17:592
3288739993330,2cyclictest0-21swapper/207:47:592
3288741993230,1cyclictest0-21swapper/309:21:593
3288741993230,1cyclictest0-21swapper/309:21:593
3288741993230,1cyclictest0-21swapper/307:41:593
3288739993229,2cyclictest0-21swapper/212:08:582
3288739993229,2cyclictest0-21swapper/208:29:552
3288739993229,2cyclictest0-21swapper/208:07:592
3288736993224,6cyclictest3309939-21sh08:14:591
3288736993224,6cyclictest3309939-21sh08:14:591
3288741993129,1cyclictest0-21swapper/312:36:003
3288741993129,1cyclictest0-21swapper/312:35:593
3288741993129,1cyclictest0-21swapper/312:34:553
3288741993129,1cyclictest0-21swapper/312:04:553
3288739993129,1cyclictest0-21swapper/211:54:582
328873999310,2cyclictest0-21swapper/209:03:592
3288736993126,4cyclictest3360785-21kworker/u8:2+flush-179:011:10:161
3288741993028,1cyclictest0-21swapper/310:50:123
3288741993028,1cyclictest0-21swapper/310:13:593
3288741993028,1cyclictest0-21swapper/308:49:553
3288741993028,1cyclictest0-21swapper/307:45:123
328874199301,27cyclictest0-21swapper/309:15:133
3288739993027,2cyclictest0-21swapper/208:45:142
3288739993027,2cyclictest0-21swapper/208:30:122
3288739993027,2cyclictest0-21swapper/207:10:112
3288739993026,2cyclictest0-21swapper/212:27:592
328873999300,28cyclictest0-21swapper/211:25:122
328873999300,1cyclictest0-21swapper/211:36:592
4577091290,7ptp4l441ktimers/310:50:013
4577091290,7ptp4l441ktimers/309:00:013
4577091290,7ptp4l441ktimers/309:00:013
4577091290,6ptp4l441ktimers/309:10:003
3288741992927,1cyclictest0-21swapper/311:59:553
3288741992927,1cyclictest0-21swapper/311:15:123
3288741992927,1cyclictest0-21swapper/309:55:593
3288741992926,2cyclictest0-21swapper/311:00:133
328874199291,26cyclictest0-21swapper/312:19:593
328874199290,28cyclictest0-21swapper/311:38:003
3288739992926,2cyclictest0-21swapper/211:20:132
3288739992926,2cyclictest0-21swapper/210:55:142
3288739992926,2cyclictest0-21swapper/210:55:132
3288739992926,2cyclictest0-21swapper/209:11:592
3288739992926,2cyclictest0-21swapper/208:23:592
328873999290,28cyclictest0-21swapper/210:40:132
328873999290,27cyclictest0-21swapper/211:30:112
328873999290,27cyclictest0-21swapper/210:35:132
328873999290,27cyclictest0-21swapper/209:05:132
328873999290,27cyclictest0-21swapper/208:50:122
328873999290,27cyclictest0-21swapper/208:15:142
328873999290,27cyclictest0-21swapper/208:10:122
328873999290,27cyclictest0-21swapper/208:10:122
328873999290,27cyclictest0-21swapper/207:35:122
328873999290,1cyclictest0-21swapper/210:15:122
328873999290,1cyclictest0-21swapper/207:50:112
3288736992925,3cyclictest3329067-21systemd-run09:15:001
3288736992925,3cyclictest3294989-21kworker/u8:0+flush-179:008:26:451
4577091280,7ptp4l61490irq/134-eno1-TxRx-009:29:593
4577091280,7ptp4l61490irq/134-eno1-TxRx-007:15:003
4577091280,7ptp4l441ktimers/311:25:013
4577091280,6ptp4l441ktimers/312:09:553
4577091280,6ptp4l441ktimers/310:30:013
4577091280,6ptp4l441ktimers/308:40:013
4577091280,6ptp4l441ktimers/308:40:013
4577091280,6ptp4l441ktimers/307:59:563
3288741992826,1cyclictest0-21swapper/310:05:023
328874199280,2cyclictest0-21swapper/308:05:013
328874199280,27cyclictest0-21swapper/311:40:123
328874199280,27cyclictest0-21swapper/311:10:113
328874199280,27cyclictest0-21swapper/308:14:553
328874199280,27cyclictest0-21swapper/308:14:553
328874199280,26cyclictest0-21swapper/308:00:113
328874199280,26cyclictest0-21swapper/307:15:113
3288739992825,2cyclictest0-21swapper/210:26:582
3288739992825,2cyclictest0-21swapper/209:57:592
328873999280,2cyclictest0-21swapper/211:45:012
328873999280,27cyclictest0-21swapper/207:20:122
328873999280,26cyclictest0-21swapper/210:05:022
3288734992822,4cyclictest3288744-21latency_hist07:10:010
4577091270,7ptp4l61490irq/134-eno1-TxRx-010:35:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-009:39:553
4577091270,6ptp4l441ktimers/310:59:563
4577091270,6ptp4l441ktimers/310:59:553
4577091270,6ptp4l441ktimers/310:45:013
4577091270,6ptp4l441ktimers/310:05:003
4577091270,5ptp4l61490irq/134-eno1-TxRx-010:25:003
3288741992725,1cyclictest0-21swapper/312:25:013
3288741992725,1cyclictest0-21swapper/311:53:593
3288741992725,1cyclictest0-21swapper/308:15:133
3288741992725,1cyclictest0-21swapper/307:21:003
3288739992725,1cyclictest0-21swapper/209:45:022
3288739992724,2cyclictest0-21swapper/212:21:592
3288739992724,2cyclictest0-21swapper/211:11:582
328873999270,1cyclictest0-21swapper/211:08:002
3288736992721,4cyclictest3288609-21latency_hist07:10:011
4577091260,5ptp4l61490irq/134-eno1-TxRx-008:29:553
4577091260,5ptp4l441ktimers/308:54:553
4577091260,4ptp4l441ktimers/307:29:543
3288739992623,2cyclictest0-21swapper/212:16:592
328873999260,24cyclictest0-21swapper/208:40:132
4577091250,5ptp4l441ktimers/309:14:553
4577091250,5ptp4l441ktimers/308:24:553
4577091250,5ptp4l441ktimers/307:35:013
3288739992522,2cyclictest0-21swapper/210:33:592
3288739992522,2cyclictest0-21swapper/210:10:122
3288739992522,2cyclictest0-21swapper/210:01:592
3288739992522,2cyclictest0-21swapper/207:32:592
3288739992421,2cyclictest0-21swapper/208:39:592
3288739992421,2cyclictest0-21swapper/208:39:592
3288739992421,2cyclictest0-21swapper/207:40:132
4577091230,4ptp4l441ktimers/309:45:013
3288739992219,2cyclictest0-21swapper/212:01:002
3288739992219,2cyclictest0-21swapper/210:54:562
3288739992018,1cyclictest0-21swapper/209:37:592
3288739991916,2cyclictest0-21swapper/207:19:592
3288739991714,2cyclictest0-21swapper/211:18:592
3288739991613,2cyclictest0-21swapper/209:20:032
3288739991613,2cyclictest0-21swapper/209:20:032
3288739991613,2cyclictest0-21swapper/208:55:592
3288739991613,2cyclictest0-21swapper/208:55:592
32887399930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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