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2026-03-13 - 19:57
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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 Fri Mar 13, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35756889910291,8cyclictest3617258-21latency_hist09:20:010
35756919910193,6cyclictest3618892-21kworker/u8:3+events_unbound09:40:031
35756919910091,7cyclictest3585471-21kworker/u8:1+events_unbound07:50:231
3575691999388,4cyclictest3633657-21kworker/u8:2+events_unbound10:20:211
3575688999380,8cyclictest3590225-21kworker/u8:0+flush-179:008:00:000
3575688998677,7cyclictest3620688-21latency_hist09:30:010
3575691998479,4cyclictest3595005-21kworker/u8:1+flush-179:008:25:251
3575691998479,4cyclictest3595005-21kworker/u8:1+flush-179:008:25:241
3575691998379,3cyclictest3554677-21kworker/u8:0+events_unbound07:30:231
3575688998373,7cyclictest3638458-21latency_hist10:25:020
3575691998278,3cyclictest3677042-21kworker/u8:2+flush-179:012:30:201
3575691998277,4cyclictest3677998-21kworker/u8:3+flush-179:012:29:551
3575691998076,3cyclictest3618892-21kworker/u8:3+events_unbound09:30:211
3575691997672,3cyclictest3554677-21kworker/u8:0+events_unbound07:20:181
3575691997671,3cyclictest3563209-21kworker/u8:2+events_unbound07:10:191
3575691997668,6cyclictest3618892-21kworker/u8:3+flush-179:009:55:001
3575688997661,12cyclictest3636906-21kworker/u8:3+flush-179:010:30:210
3575688997658,16cyclictest3604521-21latency_hist08:40:010
3575691997567,6cyclictest3593386-21latency_hist08:05:011
3575691997557,15cyclictest3665802-21http11:50:001
3575688997557,16cyclictest3669741-21apt-get12:00:100
3575691997469,4cyclictest3665241-21kworker/u8:0+events_unbound11:55:231
3575691997469,4cyclictest3628932-21kworker/u8:2+events_unbound10:00:191
3575691997469,4cyclictest3628932-21kworker/u8:2+events_unbound10:00:181
3575691997469,4cyclictest3595005-21kworker/u8:1+events_unbound08:15:141
3575688997461,9cyclictest3606156-21kworker/u8:1+flush-179:008:55:220
3575691997368,4cyclictest3602899-21kworker/u8:4+events_unbound09:10:221
3575691997368,3cyclictest3636906-21kworker/u8:3+events_unbound10:30:211
3575691997268,3cyclictest3681119-21kworker/u8:1+flush-179:012:39:561
3575691997268,3cyclictest3636906-21kworker/u8:3+events_unbound10:35:231
3575691997268,3cyclictest3585471-21kworker/u8:1+flush-179:007:40:211
3575691997267,4cyclictest3653075-21kworker/u8:3+flush-179:011:15:191
3575691997267,4cyclictest3636906-21kworker/u8:3+events_unbound10:40:191
3575691997267,4cyclictest3602898-21kworker/u8:2+events_unbound08:50:231
3575691997167,3cyclictest3633657-21kworker/u8:2+flush-179:010:29:551
3575691997166,4cyclictest3665241-21kworker/u8:0+events_unbound12:00:231
3575691997066,3cyclictest3656191-21kworker/u8:2+events_unbound11:30:191
3575691997066,3cyclictest3587066-21kworker/u8:3+flush-179:008:05:221
3575691996965,3cyclictest3646387-21kworker/u8:1+flush-179:011:09:561
3575691996964,4cyclictest3665241-21kworker/u8:0+flush-179:012:10:191
3575691996958,4cyclictest3602898-21kworker/u8:2+events_unbound09:20:221
3575688996961,6cyclictest3633675-21latency_hist10:10:000
3575691996864,3cyclictest3656191-21kworker/u8:2+flush-179:011:20:191
3575691996751,14cyclictest3578786-21apt-get07:20:011
3575691996662,3cyclictest3646387-21kworker/u8:1+flush-179:010:50:201
3575691996662,3cyclictest3641611-21kworker/u8:4+flush-179:010:45:221
3575691996661,4cyclictest3587066-21kworker/u8:3+events_unbound08:30:141
357568899663,46cyclictest3618904-21munin-run09:25:000
3575691996561,3cyclictest3646387-21kworker/u8:1+events_unbound11:00:211
3575691996560,3cyclictest3606156-21kworker/u8:1+events_unbound08:55:131
3575691996458,4cyclictest3656191-21kworker/u8:2+events_unbound11:40:181
3575691996458,4cyclictest3656191-21kworker/u8:2+events_unbound11:40:181
3575691996449,13cyclictest3602898-21kworker/u8:2+flush-179:009:10:011
3575688996461,2cyclictest0-21swapper/007:20:590
3575691996359,3cyclictest3602898-21kworker/u8:2+flush-179:008:44:561
3575691996358,4cyclictest3656191-21kworker/u8:2+flush-179:011:39:551
3575691996358,4cyclictest3587066-21kworker/u8:3+flush-179:008:14:551
3575691996353,8cyclictest266-21systemd-journal09:46:201
3575693996259,2cyclictest0-21swapper/207:26:592
3575691996257,4cyclictest3618892-21kworker/u8:3+flush-179:009:25:261
3575691996257,4cyclictest3578856-21kworker/u8:3+events_unbound07:25:251
3575688996155,5cyclictest3641611-21kworker/u8:4+flush-179:010:40:010
3575691996052,6cyclictest3676252-21store12:20:011
3575688996047,10cyclictest266-21systemd-journal10:54:590
3575691995948,9cyclictest3584063-21apt-get07:35:111
3575688995949,8cyclictest3588862-21apt-get07:50:100
3575691995854,3cyclictest3618892-21kworker/u8:3+flush-179:009:39:551
3575691995751,4cyclictest3602898-21kworker/u8:2+flush-179:008:45:141
3575688995751,4cyclictest3618892-21kworker/u8:3+events_unbound09:45:160
3575688995750,5cyclictest3582256-21kworker/u8:2+flush-179:007:39:590
3575691995651,4cyclictest3595005-21kworker/u8:1+events_unbound08:20:131
3575691995651,4cyclictest3587066-21kworker/u8:3+flush-179:007:59:551
3575688995645,8cyclictest266-21systemd-journal07:30:000
3575691995551,3cyclictest3665241-21kworker/u8:0+events_unbound11:50:231
3575691995550,4cyclictest3677042-21kworker/u8:2+events_unbound12:20:171
3575688995548,5cyclictest3641611-21kworker/u8:4+flush-179:010:45:210
3575688995547,6cyclictest3665241-21kworker/u8:0+events_unbound12:15:000
3575691995449,4cyclictest3602898-21kworker/u8:2+events_unbound09:15:181
3575691995445,7cyclictest3606156-21kworker/u8:1+flush-179:009:00:221
3575688995446,5cyclictest3646387-21kworker/u8:1+events_unbound11:00:010
3575688995444,7cyclictest3585471-21kworker/u8:1+flush-179:007:40:230
3575691995349,3cyclictest3602899-21kworker/u8:4+flush-179:008:39:541
3575691995348,4cyclictest3633657-21kworker/u8:2+events_unbound10:19:221
3575688995348,3cyclictest3582256-21kworker/u8:2+flush-179:008:20:010
3575688995345,6cyclictest3583807-21latency_hist07:35:010
3575688995339,10cyclictest3665784-21apt-get11:50:010
3575691995247,4cyclictest3646387-21kworker/u8:1+events_unbound11:10:251
3575688995147,2cyclictest3595005-21kworker/u8:1+flush-179:008:10:190
3575691995045,4cyclictest3582256-21kworker/u8:2+events_unbound07:45:181
3575691994945,3cyclictest3665916-21kworker/u8:1+events_unbound12:09:561
3575688994945,3cyclictest3624401-21kworker/u8:1+flush-179:010:05:010
3575688994945,3cyclictest3624401-21kworker/u8:1+flush-179:010:05:000
3575688994943,5cyclictest3677042-21kworker/u8:2+flush-179:012:20:240
3575688994942,4cyclictest3618892-21kworker/u8:3+flush-179:009:35:140
3575688994941,6cyclictest3607952-21apt-get08:50:120
3575688994939,8cyclictest266-21systemd-journal09:59:210
4577091480,13ptp4l441ktimers/307:10:013
3575691994844,3cyclictest3628881-21kworker/u8:0+events_unbound10:10:141
3575691994844,3cyclictest3624401-21kworker/u8:1+flush-179:009:59:561
3575688994843,4cyclictest3582256-21kworker/u8:2+flush-179:007:45:200
3575688994838,8cyclictest3653075-21kworker/u8:3+flush-179:011:35:010
3575691994743,3cyclictest3646387-21kworker/u8:1+events_unbound10:56:211
3575688994744,2cyclictest3618892-21kworker/u8:3+events_unbound09:40:220
3575688994738,7cyclictest3677042-21kworker/u8:2+flush-179:012:25:230
3575691994642,3cyclictest3653075-21kworker/u8:3+events_unbound11:29:241
3575688994641,4cyclictest3587066-21kworker/u8:3+events_unbound08:04:560
3575688994541,2cyclictest3653075-21kworker/u8:3+events_unbound11:25:230
3575688994539,4cyclictest3653075-21kworker/u8:3+flush-179:011:15:220
3575688994538,5cyclictest3656191-21kworker/u8:2+events_unbound11:20:120
357568899450,2cyclictest714-21Xorg09:09:000
3575688994438,5cyclictest3618892-21kworker/u8:3+flush-179:009:30:210
357568899431,37cyclictest3662852-21apt-get11:40:130
357568899431,37cyclictest3662852-21apt-get11:40:130
3575688994239,2cyclictest3635519-21kworker/u8:1+flush-179:010:15:200
3575688994236,3cyclictest3662570-21cron11:40:000
357568899420,40cyclictest714-21Xorg07:16:000
3575697994139,1cyclictest0-21swapper/309:44:583
3575688994133,5cyclictest3624401-21kworker/u8:1+events_unbound09:50:210
357568899411,37cyclictest714-21Xorg12:05:590
3575688994034,4cyclictest3563209-21kworker/u8:2+events_unbound07:10:130
3575688994032,6cyclictest3666269-21/usr/sbin/munin11:50:220
357568899400,3cyclictest3607711-21grep08:50:000
357568899400,38cyclictest714-21Xorg08:42:590
357569799390,4cyclictest3665783-21turbostat11:50:013
3575693993936,2cyclictest0-21swapper/209:00:592
3575688993932,5cyclictest266-21systemd-journal12:38:220
357568899390,3cyclictest3594979-21apt08:10:000
357568899390,37cyclictest714-21Xorg12:33:590
357569399380,36cyclictest0-21swapper/211:26:592
357569399380,36cyclictest0-21swapper/208:41:002
357569399380,36cyclictest0-21swapper/207:58:002
357569399380,35cyclictest0-21swapper/207:44:592
3575691993833,4cyclictest3624401-21kworker/u8:1+flush-179:010:05:171
3575688993832,4cyclictest3654788-21sed11:15:010
3575697993735,1cyclictest0-21swapper/311:22:593
357569799370,36cyclictest0-21swapper/308:53:003
3575693993734,2cyclictest0-21swapper/212:23:592
3575693993734,2cyclictest0-21swapper/208:35:592
3575688993732,4cyclictest3595005-21kworker/u8:1+flush-179:008:20:200
3575688993730,5cyclictest3602923-21latency_hist08:35:010
3575697993634,1cyclictest0-21swapper/311:13:593
3575697993633,2cyclictest0-21swapper/307:11:593
357569799360,35cyclictest0-21swapper/308:24:553
3575693993633,2cyclictest0-21swapper/210:20:002
3575693993633,2cyclictest0-21swapper/210:12:582
3575693993633,2cyclictest0-21swapper/209:24:552
3575693993633,2cyclictest0-21swapper/208:59:552
357569399360,1cyclictest0-21swapper/208:02:582
3575688993631,4cyclictest3636906-21kworker/u8:3+flush-179:010:40:200
3575697993533,1cyclictest0-21swapper/308:09:563
357569799350,34cyclictest0-21swapper/312:26:593
357569799350,34cyclictest0-21swapper/307:48:593
357569799350,1cyclictest0-21swapper/309:28:593
3575693993532,2cyclictest0-21swapper/209:14:552
3575693993532,2cyclictest0-21swapper/208:10:592
3575688993526,7cyclictest3665241-21kworker/u8:0+flush-179:012:15:190
3575697993432,1cyclictest0-21swapper/310:24:563
3575697993431,2cyclictest0-21swapper/311:57:593
3575693993431,2cyclictest0-21swapper/209:18:592
3575688993431,2cyclictest714-21Xorg10:14:580
3575688993431,2cyclictest0-21swapper/011:08:590
3575688993425,7cyclictest266-21systemd-journal09:01:210
357568899342,30cyclictest3600004-21apt-get08:25:140
357568899342,30cyclictest3600004-21apt-get08:25:130
3575697993331,1cyclictest0-21swapper/309:36:593
3575697993331,1cyclictest0-21swapper/307:31:593
3575697993330,2cyclictest0-21swapper/307:52:593
3575693993330,2cyclictest0-21swapper/210:43:582
3575693993330,2cyclictest0-21swapper/208:20:002
3575693993330,2cyclictest0-21swapper/207:12:592
3575688993330,2cyclictest714-21Xorg11:56:590
3575688993330,2cyclictest0-21swapper/011:02:590
3575697993231,1cyclictest0-21swapper/310:34:593
3575697993230,1cyclictest0-21swapper/311:18:003
3575693993230,1cyclictest0-21swapper/212:04:592
3575693993230,1cyclictest0-21swapper/211:44:592
3575693993230,1cyclictest0-21swapper/211:44:592
3575693993228,2cyclictest71-21kworker/2:1-events10:55:122
3575693993228,2cyclictest351rcuc/211:05:122
3575697993128,2cyclictest0-21swapper/311:32:003
357569799310,27cyclictest0-21swapper/311:35:133
3575693993129,1cyclictest0-21swapper/208:49:592
3575693993128,2cyclictest0-21swapper/212:15:592
3575693993128,2cyclictest0-21swapper/210:48:002
3575697993028,1cyclictest0-21swapper/311:04:593
3575697993028,1cyclictest0-21swapper/309:52:003
3575693993027,2cyclictest0-21swapper/210:33:592
3575693993027,2cyclictest0-21swapper/208:26:002
3575693993027,2cyclictest0-21swapper/208:26:002
3575693993027,2cyclictest0-21swapper/208:07:592
3575693993026,2cyclictest0-21swapper/207:30:112
357569399300,2cyclictest0-21swapper/209:25:022
357569399300,28cyclictest0-21swapper/212:25:142
357569399300,28cyclictest0-21swapper/210:50:112
357569399300,28cyclictest0-21swapper/209:36:002
3575697992927,1cyclictest0-21swapper/309:07:593
3575697992927,1cyclictest0-21swapper/308:00:123
3575697992926,2cyclictest0-21swapper/312:00:123
357569799290,28cyclictest0-21swapper/312:20:113
357569799290,28cyclictest0-21swapper/310:45:123
357569799290,28cyclictest0-21swapper/307:55:123
357569799290,27cyclictest0-21swapper/312:30:123
357569799290,26cyclictest0-21swapper/311:06:593
357569799290,26cyclictest0-21swapper/310:05:123
357569799290,26cyclictest0-21swapper/309:55:123
3575693992926,2cyclictest0-21swapper/212:10:012
3575693992926,2cyclictest0-21swapper/211:55:022
3575693992926,2cyclictest0-21swapper/211:30:112
357569399290,2cyclictest0-21swapper/211:50:122
357569399290,27cyclictest0-21swapper/212:30:122
357569399290,27cyclictest0-21swapper/211:35:132
357569399290,27cyclictest0-21swapper/209:40:032
357569399290,27cyclictest0-21swapper/207:20:022
357569399290,27cyclictest0-21swapper/207:15:122
357568899291,2cyclictest714-21Xorg10:25:580
4577091280,6ptp4l441ktimers/312:20:003
4577091280,6ptp4l441ktimers/307:25:003
3575697992826,1cyclictest0-21swapper/310:53:593
3575697992826,1cyclictest0-21swapper/307:26:593
3575697992825,2cyclictest0-21swapper/309:20:123
357569799280,2cyclictest0-21swapper/312:10:113
357569799280,26cyclictest0-21swapper/307:15:123
3575693992825,2cyclictest0-21swapper/211:15:122
3575693992825,2cyclictest0-21swapper/210:20:112
3575693992825,2cyclictest0-21swapper/209:55:132
3575693992825,2cyclictest0-21swapper/209:50:122
3575693992824,2cyclictest0-21swapper/211:01:002
357569399280,2cyclictest0-21swapper/211:50:012
357569399280,26cyclictest0-21swapper/207:50:122
4577091270,5ptp4l441ktimers/312:39:563
4577091270,5ptp4l441ktimers/308:44:563
4577091270,5ptp4l441ktimers/307:40:003
4577091270,4ptp4l441ktimers/311:45:003
4577091270,4ptp4l441ktimers/311:45:003
4577091270,4ptp4l441ktimers/310:45:013
4577091270,4ptp4l441ktimers/309:05:003
4577091270,4ptp4l441ktimers/308:45:013
4577091270,4ptp4l441ktimers/308:14:593
3575697992724,2cyclictest0-21swapper/307:41:593
357569799270,1cyclictest0-21swapper/309:17:593
3575693992724,2cyclictest0-21swapper/207:45:132
3575693992724,2cyclictest0-21swapper/207:35:122
357569399270,25cyclictest0-21swapper/210:08:002
357568899270,26cyclictest0-21swapper/009:14:590
4577091260,4ptp4l61490irq/134-eno1-TxRx-010:05:023
4577091260,4ptp4l61490irq/134-eno1-TxRx-010:05:013
4577091260,4ptp4l61490irq/134-eno1-TxRx-008:30:003
4577091260,4ptp4l61490irq/134-eno1-TxRx-008:29:593
4577091260,4ptp4l441ktimers/312:09:563
4577091260,4ptp4l441ktimers/311:30:013
4577091260,4ptp4l441ktimers/310:59:563
4577091260,4ptp4l441ktimers/309:35:013
4577091260,4ptp4l441ktimers/308:59:563
3575697992625,1cyclictest0-21swapper/309:50:003
3575697992624,1cyclictest0-21swapper/310:39:003
3575697992624,1cyclictest0-21swapper/310:29:553
3575697992623,2cyclictest0-21swapper/308:31:593
357569799260,1cyclictest0-21swapper/309:11:003
357569399260,24cyclictest0-21swapper/210:36:592
4577091250,4ptp4l61490irq/134-eno1-TxRx-008:40:013
4577091250,4ptp4l441ktimers/310:19:563
4577091250,4ptp4l441ktimers/308:19:553
3575697992523,1cyclictest0-21swapper/311:50:123
3575693992522,2cyclictest0-21swapper/211:10:582
3575693992521,2cyclictest0-21swapper/212:10:012
357569399250,2cyclictest0-21swapper/212:35:132
357569399250,2cyclictest0-21swapper/211:22:002
4577091240,4ptp4l61490irq/134-eno1-TxRx-010:14:553
3575693992422,1cyclictest0-21swapper/209:34:562
3575693992321,1cyclictest0-21swapper/210:00:092
3575693992321,1cyclictest0-21swapper/210:00:092
3575693992219,2cyclictest0-21swapper/208:22:592
231999220,13rtkit-daemon3203871-21ntpd07:09:250
3575693992118,2cyclictest0-21swapper/210:26:592
357569199218,7cyclictest29-21ksoftirqd/107:10:011
3575693992018,1cyclictest0-21swapper/209:09:592
3575693991916,2cyclictest351rcuc/208:34:592
357569399118,2cyclictest351rcuc/209:47:142
357569399107,2cyclictest351rcuc/208:54:062
35756939941,2cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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