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2026-06-21 - 00:20
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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 Jun 20, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
363225399125112,9cyclictest3644936-21latency_hist07:50:011
363225199121110,8cyclictest3638465-21latency_hist07:30:010
36322539912099,15cyclictest3635325-21kworker/u8:2+events_unbound07:20:011
363225199117106,9cyclictest3664418-21gpgv08:50:010
36322519911198,10cyclictest1213033-21systemd-journal09:45:010
36322519911198,10cyclictest1213033-21systemd-journal09:45:000
36322539910998,7cyclictest3667729-21latency_hist09:00:011
36322539910893,12cyclictest3711484-21apt-get11:15:011
363225399108102,4cyclictest3653383-21kworker/u8:0+flush-179:008:50:161
36322539910796,8cyclictest3646513-21kworker/u8:2+flush-179:008:20:001
36322539910697,6cyclictest3667706-21kworker/u8:3+flush-179:009:10:261
36322539910691,5cyclictest3672481-21kworker/u8:2+events_unbound09:25:211
36322539910391,11cyclictest3670320-21kworker/u8:0+flush-179:009:05:241
36322539910385,6cyclictest3723386-21kworker/u8:2+events_unbound12:05:171
36322539910385,6cyclictest3723386-21kworker/u8:2+events_unbound12:05:171
36322519910394,5cyclictest1-21systemd07:15:010
36322519910393,7cyclictest1213033-21systemd-journal08:25:010
36322519910189,9cyclictest3711474-21latency_hist11:15:010
3632253999990,7cyclictest3691263-21kworker/u8:0+events_unbound11:00:001
3632253999787,7cyclictest3672481-21kworker/u8:2+flush-179:009:30:011
3632251999766,20cyclictest3706970-21apt-get11:00:120
3632253999690,5cyclictest3692000-21kworker/u8:3+flush-179:010:20:251
3632251999687,7cyclictest3675152-21kworker/u8:1+flush-179:009:35:160
3632253999590,3cyclictest3691263-21kworker/u8:0+events_unbound10:30:151
3632251999585,8cyclictest1213033-21systemd-journal10:20:000
3632253999386,5cyclictest3723386-21kworker/u8:2+flush-179:011:50:251
3632253999385,5cyclictest3720022-21kworker/u8:1+events_unbound12:15:181
3632253999384,7cyclictest3637876-21kworker/u8:1+events_unbound07:50:201
3632253999283,7cyclictest3714980-21kworker/u8:3+events_unbound11:30:001
3632253999282,7cyclictest3692000-21kworker/u8:3+events_unbound10:15:201
3632253999281,8cyclictest3646513-21kworker/u8:2+events_unbound08:00:251
3632253999180,9cyclictest1213033-21systemd-journal10:10:001
3632253999180,9cyclictest1213033-21systemd-journal10:09:591
3632251999182,7cyclictest3696898-21latency_hist10:30:020
3632253999086,3cyclictest3691263-21kworker/u8:0+flush-179:010:45:241
3632253999085,4cyclictest3685527-21kworker/u8:3+events_unbound09:55:261
3632253999084,4cyclictest3653383-21kworker/u8:0+events_unbound08:45:151
3632253999084,4cyclictest3653383-21kworker/u8:0+events_unbound08:20:181
3632253999082,6cyclictest3691263-21kworker/u8:0+flush-179:010:40:101
3632253998981,6cyclictest3669331-21latency_hist09:05:001
3632253998883,4cyclictest3675152-21kworker/u8:1+events_unbound09:35:251
3632251998881,4cyclictest3637876-21kworker/u8:1+flush-179:007:50:140
3632251998880,6cyclictest3657928-21latency_hist08:30:010
3632253998783,3cyclictest3709923-21kworker/u8:0+events_unbound11:15:231
3632253998782,4cyclictest3646513-21kworker/u8:2+events_unbound07:55:231
3632253998681,4cyclictest3670320-21kworker/u8:0+flush-179:009:15:251
3632251998677,7cyclictest3649717-21latency_hist08:05:000
3632253998580,4cyclictest3612776-21kworker/u8:0+flush-179:007:10:241
3632251998577,5cyclictest3679130-21latency_hist09:35:010
3632251998477,5cyclictest3734578-21kworker/u8:3+events_unbound12:35:010
3632251998475,6cyclictest3662708-21latency_hist08:45:010
3632253998378,4cyclictest3737701-21kworker/u8:2+flush-179:012:35:191
3632253998372,4cyclictest3733195-21kworker/u8:0+events_unbound12:30:171
3632251998376,5cyclictest3646513-21kworker/u8:2+flush-179:007:55:220
3632251998274,7cyclictest3723386-21kworker/u8:2+events_unbound12:05:010
3632251998274,6cyclictest3641752-21latency_hist07:40:010
3632251998271,9cyclictest3711987-21apt-get11:15:110
3632251998172,7cyclictest3675696-21latency_hist09:25:000
3632251998172,6cyclictest3688690-21latency_hist10:05:020
3632253998074,4cyclictest3675152-21kworker/u8:1+flush-179:010:10:201
3632253998073,5cyclictest3648367-21kworker/u8:3+flush-179:008:10:211
3632253997976,2cyclictest3635325-21kworker/u8:2+events_unbound07:20:231
3632253997972,5cyclictest3705091-21kworker/u8:2+events_unbound11:30:181
3632253997971,5cyclictest3705091-21kworker/u8:2+events_unbound11:00:181
3632251997965,11cyclictest3691263-21kworker/u8:0+flush-179:010:40:000
3632253997873,4cyclictest3654800-21kworker/u8:1+flush-179:008:25:271
3632253997871,5cyclictest3723386-21kworker/u8:2+events_unbound11:55:201
3632253997870,6cyclictest3721813-21latency_hist11:45:001
3632253997868,8cyclictest3734799-21apt-get12:25:101
3632253997868,8cyclictest1213033-21systemd-journal09:24:591
3632253997672,3cyclictest3675152-21kworker/u8:1+flush-179:010:00:191
3632253997672,3cyclictest3635325-21kworker/u8:2+flush-179:007:25:191
3632253997668,6cyclictest3637876-21kworker/u8:1+flush-179:007:45:001
3632253997570,4cyclictest3672481-21kworker/u8:2+flush-179:009:40:281
3632253997570,4cyclictest3672481-21kworker/u8:2+flush-179:009:40:281
3632253997570,3cyclictest3681793-21kworker/u8:0+flush-179:009:45:121
3632251997564,9cyclictest3635550-21apt-get07:20:120
3632253997470,3cyclictest3714980-21kworker/u8:3+events_unbound11:45:131
3632253997469,3cyclictest3657973-21kworker/u8:3+events_unbound08:35:191
3632253997466,6cyclictest3637876-21kworker/u8:1+flush-179:007:30:051
3632253997267,4cyclictest3723386-21kworker/u8:2+flush-179:012:00:241
3632253997267,4cyclictest3705091-21kworker/u8:2+flush-179:011:20:211
3632251997266,4cyclictest3664273-21kworker/u8:1+flush-179:009:00:140
3632251997264,6cyclictest3714980-21kworker/u8:3+flush-179:011:45:210
3632251997262,5cyclictest3653383-21kworker/u8:0+events_unbound08:50:240
3632253997166,3cyclictest3691263-21kworker/u8:0+flush-179:010:25:211
3632253997164,5cyclictest3675152-21kworker/u8:1+events_unbound10:35:191
3632253997164,4cyclictest3653383-21kworker/u8:0+events_unbound08:30:191
3632253997163,6cyclictest3632069-21latency_hist07:10:021
3632251997165,4cyclictest3654769-21latency_hist08:20:000
3632251996861,6cyclictest3637876-21kworker/u8:1+flush-179:007:30:240
3632251996858,7cyclictest3664273-21kworker/u8:1+flush-179:009:05:200
3632253996763,3cyclictest3648099-21kworker/u8:0+flush-179:008:05:211
3632251996654,9cyclictest3726589-21latency_hist12:00:010
3632251996654,9cyclictest3681793-21kworker/u8:0+events_unbound09:45:230
3632251996650,9cyclictest3675152-21kworker/u8:1+events_unbound10:30:010
3632253996559,4cyclictest3705107-21latency_hist10:55:011
3632251996551,10cyclictest3701970-21kworker/u8:1+flush-179:010:55:000
3632251996354,6cyclictest3714908-21kworker/u8:1+flush-179:011:25:130
3632251996352,9cyclictest3642024-21apt-get07:40:120
3632251996255,5cyclictest3720017-21kworker/u8:0+flush-179:011:40:170
3632251996255,4cyclictest3705091-21kworker/u8:2+events_unbound11:35:250
3632251996253,6cyclictest3681793-21kworker/u8:0+flush-179:009:50:200
3632251996248,9cyclictest1213033-21systemd-journal11:30:160
3632253996156,4cyclictest3701970-21kworker/u8:1+flush-179:011:05:191
3632251996147,11cyclictest1213033-21systemd-journal12:30:010
3632251996054,3cyclictest501-21systemd-logind10:50:000
3632251996052,6cyclictest3648367-21kworker/u8:3+flush-179:008:10:250
3632251996051,7cyclictest3688672-21kworker/u8:2+flush-179:010:09:590
3632251996051,7cyclictest3688672-21kworker/u8:2+flush-179:010:09:590
3632251996042,15cyclictest3706704-21latency_hist11:00:000
3632253995949,8cyclictest3730017-21apt-get12:10:111
3632251995943,12cyclictest510-21rs:main0
3632251995849,5cyclictest3653383-21kworker/u8:0+flush-179:008:40:000
3632251995848,8cyclictest3675152-21kworker/u8:1+events_unbound10:10:250
3632251995848,7cyclictest3674104-21latency_hist09:20:020
3632253995751,4cyclictest3705091-21kworker/u8:2+flush-179:011:35:161
3632253995745,10cyclictest3684449-21diskstats09:50:151
3632251995742,11cyclictest1213033-21systemd-journal09:15:000
3632251995646,7cyclictest3653383-21kworker/u8:0+flush-179:008:55:230
3632253995450,3cyclictest3635325-21kworker/u8:2+events_unbound07:35:251
3632253995449,4cyclictest3733195-21kworker/u8:0+events_unbound12:24:161
3632251995446,6cyclictest3677617-21gpgv09:30:000
3632251995245,5cyclictest3731349-21latency_hist12:15:010
3632251995142,7cyclictest3648099-21kworker/u8:0+events_unbound08:05:230
3632251995141,7cyclictest3720022-21kworker/u8:1+flush-179:011:51:160
3632251994943,5cyclictest3734578-21kworker/u8:3+flush-179:012:35:220
4577091480,12ptp4l61490irq/134-eno1-TxRx-007:09:563
363225999480,39cyclictest3635279-21turbostat07:20:013
3632253994843,4cyclictest3653383-21kworker/u8:0+flush-179:008:44:551
3632251994842,4cyclictest3732953-21latency_hist12:20:010
3632251994841,5cyclictest3705091-21kworker/u8:2+events_unbound11:20:230
3632251994740,6cyclictest3701970-21kworker/u8:1+flush-179:011:05:250
363225199460,45cyclictest3643357-21turbostat07:49:550
3632251994235,6cyclictest3692000-21kworker/u8:3+flush-179:010:20:220
363225999410,39cyclictest3695322-21turbostat10:25:003
3632257994138,2cyclictest0-21swapper/211:29:592
3632251994135,4cyclictest3687133-21systemd-run10:00:000
363225999400,39cyclictest3667732-21turbostat09:00:003
363225999400,32cyclictest3705124-21turbostat10:55:003
3632257994037,2cyclictest0-21swapper/212:01:592
3632251994034,5cyclictest3691263-21kworker/u8:0+flush-179:010:40:210
3632259993936,2cyclictest0-21swapper/311:29:593
3632259993933,5cyclictest3656352-21turbostat08:25:003
3632259993933,4cyclictest3718372-21turbostat11:35:003
363225999390,38cyclictest3729777-21turbostat12:10:013
363225999390,38cyclictest3729777-21turbostat12:10:003
363225999390,38cyclictest3640071-21turbostat07:35:003
363225999390,37cyclictest3691872-21turbostat10:15:013
363225799390,30cyclictest0-21swapper/211:22:592
3632259993836,1cyclictest0-21swapper/312:01:593
3632259993832,4cyclictest3653151-21turbostat08:15:003
363225999380,37cyclictest0-21swapper/311:22:593
363225999380,1cyclictest0-21swapper/308:27:593
3632257993833,2cyclictest0-21swapper/208:32:002
363225799380,35cyclictest0-21swapper/208:20:002
363225999370,34cyclictest0-21swapper/309:55:583
3632257993734,2cyclictest0-21swapper/208:06:592
3632257993733,2cyclictest0-21swapper/208:10:592
3632257993733,2cyclictest0-21swapper/207:39:552
3632259993634,1cyclictest0-21swapper/309:40:593
3632259993634,1cyclictest0-21swapper/309:40:583
3632259993633,2cyclictest0-21swapper/308:07:003
3632257993634,1cyclictest0-21swapper/208:24:592
3632257993633,1cyclictest0-21swapper/210:04:592
363225799360,2cyclictest0-21swapper/209:55:582
363225799360,2cyclictest0-21swapper/208:27:592
363225799360,1cyclictest0-21swapper/211:15:002
363225799360,1cyclictest0-21swapper/210:54:552
3632259993532,2cyclictest0-21swapper/309:48:003
363225999350,34cyclictest0-21swapper/310:29:563
3632257993532,2cyclictest0-21swapper/212:27:592
3632257993532,2cyclictest0-21swapper/209:48:002
3632251993517,16cyclictest3658296-21grep08:30:120
3632251993517,16cyclictest0-21swapper/012:05:270
3632251993517,16cyclictest0-21swapper/012:05:270
3632251993513,20cyclictest3635288-21systemctl07:20:010
3632259993431,2cyclictest0-21swapper/308:32:003
3632257993430,2cyclictest0-21swapper/211:36:592
3632259993331,1cyclictest0-21swapper/310:05:003
3632259993331,1cyclictest0-21swapper/307:39:553
3632259993330,2cyclictest0-21swapper/312:27:593
3632257993329,2cyclictest0-21swapper/207:46:592
3632257993329,2cyclictest0-21swapper/207:34:552
3632257993329,2cyclictest0-21swapper/207:29:552
363225999310,28cyclictest0-21swapper/309:15:143
363225999310,1cyclictest0-21swapper/312:13:593
3632257993128,2cyclictest0-21swapper/209:44:552
3632257993128,2cyclictest0-21swapper/209:44:552
363225799310,2cyclictest0-21swapper/210:15:012
363225799310,28cyclictest0-21swapper/210:47:592
3632259993028,1cyclictest0-21swapper/311:36:593
3632259993028,1cyclictest0-21swapper/307:46:583
363225999300,29cyclictest0-21swapper/310:30:133
363225999300,28cyclictest0-21swapper/307:50:123
3632257993027,2cyclictest0-21swapper/209:30:022
363225799300,2cyclictest0-21swapper/209:15:132
363225799300,28cyclictest0-21swapper/210:30:012
3632259992927,1cyclictest0-21swapper/307:29:553
3632259992926,2cyclictest0-21swapper/310:15:013
3632259992925,2cyclictest0-21swapper/311:05:133
363225999290,2cyclictest0-21swapper/307:55:133
363225999290,27cyclictest0-21swapper/308:35:133
363225999290,21cyclictest0-21swapper/309:35:143
363225999290,1cyclictest0-21swapper/308:40:143
3632257992926,2cyclictest0-21swapper/212:24:552
3632257992926,2cyclictest0-21swapper/211:15:022
3632257992926,2cyclictest0-21swapper/209:35:142
3632257992926,2cyclictest0-21swapper/208:49:002
363225799290,2cyclictest0-21swapper/210:30:132
363225799290,27cyclictest0-21swapper/211:30:132
363225799290,27cyclictest0-21swapper/208:50:042
363225799290,27cyclictest0-21swapper/208:40:132
363225799290,27cyclictest0-21swapper/208:35:142
363225799290,27cyclictest0-21swapper/207:55:132
363225799290,27cyclictest0-21swapper/207:50:112
363225799290,27cyclictest0-21swapper/207:20:132
4577091280,6ptp4l61490irq/134-eno1-TxRx-012:30:013
4577091280,6ptp4l61490irq/134-eno1-TxRx-011:05:013
4577091280,6ptp4l61490irq/134-eno1-TxRx-010:40:003
4577091280,6ptp4l441ktimers/312:00:013
4577091280,6ptp4l441ktimers/311:00:003
4577091280,6ptp4l441ktimers/310:09:593
4577091280,6ptp4l441ktimers/310:09:593
4577091280,6ptp4l441ktimers/307:45:013
4577091280,6ptp4l441ktimers/307:15:013
3632259992826,1cyclictest0-21swapper/308:49:003
363225999280,27cyclictest0-21swapper/312:20:133
363225999280,27cyclictest0-21swapper/311:15:033
363225999280,27cyclictest0-21swapper/311:15:013
363225999280,27cyclictest0-21swapper/309:30:033
363225999280,27cyclictest0-21swapper/307:20:133
363225999280,1cyclictest0-21swapper/309:00:133
363225799280,2cyclictest0-21swapper/209:00:132
363225799280,27cyclictest0-21swapper/210:15:022
363225799280,26cyclictest0-21swapper/211:05:142
363225799280,26cyclictest0-21swapper/209:10:582
4577091270,6ptp4l61490irq/134-eno1-TxRx-009:24:593
4577091270,6ptp4l441ktimers/308:19:553
4577091270,5ptp4l441ktimers/312:20:003
4577091270,5ptp4l441ktimers/311:55:003
4577091270,5ptp4l441ktimers/308:04:543
4577091270,4ptp4l441ktimers/311:50:003
363225999270,26cyclictest0-21swapper/309:13:583
363225999270,1cyclictest0-21swapper/308:50:023
3632257992724,2cyclictest0-21swapper/212:15:122
3632257992724,2cyclictest0-21swapper/209:29:542
3632257992723,2cyclictest0-21swapper/209:21:002
4577091260,5ptp4l441ktimers/312:39:563
4577091260,5ptp4l441ktimers/310:44:553
4577091260,5ptp4l441ktimers/309:30:003
4577091260,5ptp4l441ktimers/309:09:553
3632257992623,2cyclictest0-21swapper/211:40:592
3632257992623,2cyclictest0-21swapper/210:22:592
3632257992622,2cyclictest0-21swapper/210:09:562
3632257992622,2cyclictest0-21swapper/210:09:552
4577091250,5ptp4l61490irq/134-eno1-TxRx-009:54:553
3632259992521,3cyclictest0-21swapper/310:46:593
3632257992523,1cyclictest0-21swapper/207:44:592
3632257992522,2cyclictest0-21swapper/212:11:592
363225799250,24cyclictest0-21swapper/207:14:552
363225199251,9cyclictest3632256-21wc07:10:020
3632259992422,1cyclictest0-21swapper/311:40:593
3632257992421,2cyclictest0-21swapper/208:04:002
3632257992420,2cyclictest0-21swapper/209:52:002
3632257992321,1cyclictest0-21swapper/211:54:592
3632257992118,2cyclictest0-21swapper/210:55:142
3632257992118,2cyclictest0-21swapper/207:19:552
3632257992017,2cyclictest0-21swapper/211:45:592
3632257991816,1cyclictest0-21swapper/210:39:592
3632257991815,2cyclictest0-21swapper/211:55:132
3632257991815,2cyclictest0-21swapper/208:55:582
3632257991512,2cyclictest0-21swapper/211:04:552
3632257991310,2cyclictest0-21swapper/212:32:592
363225799118,2cyclictest0-21swapper/212:38:592
36322579996,2cyclictest0-21swapper/210:43:582
36322579974,2cyclictest0-21swapper/212:07:312
36322579974,2cyclictest0-21swapper/212:07:312
36322579974,2cyclictest0-21swapper/209:08:462
36322579930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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