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2026-06-08 - 18:43
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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 792 highest latencies:
System rackeslot6.osadl.org (updated Mon Jun 08, 2026 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5434189911798,17cyclictest649744-21apt-get12:40:010
54341899111101,7cyclictest608068-21latency_hist10:30:010
5434209910192,6cyclictest577261-21kworker/u8:0+flush-179:008:55:241
543420999989,7cyclictest646549-21latency_hist12:30:001
543418999992,5cyclictest606460-21kworker/u8:1+events_unbound10:40:140
543420999888,8cyclictest575953-21apt-get08:50:131
543420999877,18cyclictest636744-21latency_hist12:00:011
543418999791,5cyclictest636531-21kworker/u8:1+events_unbound12:10:010
543418999790,5cyclictest577261-21kworker/u8:0+flush-179:010:15:020
543418999589,4cyclictest606460-21kworker/u8:1+flush-179:010:55:160
543418999588,5cyclictest557914-21kworker/u8:0+flush-179:008:10:160
543418999481,10cyclictest593735-21apt-get09:45:100
543420999388,4cyclictest636779-21kworker/u8:2+flush-179:012:15:241
543420999282,7cyclictest590285-21latency_hist09:35:011
543418999282,7cyclictest591880-21latency_hist09:40:010
543418998984,3cyclictest548325-21kworker/u8:2+flush-179:007:25:170
543418998782,4cyclictest577261-21kworker/u8:0+events_unbound10:25:000
543418998780,4cyclictest595053-21kworker/u8:1+events_unbound09:50:250
543420998676,6cyclictest609656-21latency_hist10:35:011
543418998679,5cyclictest541817-21kworker/u8:0+flush-179:007:30:140
543418998679,4cyclictest611929-21kworker/u8:2+events_unbound11:00:250
543418998677,7cyclictest560853-21latency_hist08:05:010
543418998575,8cyclictest577291-21apt-get08:54:590
543420998480,3cyclictest577261-21kworker/u8:0+flush-179:010:00:261
543418998371,10cyclictest601445-21apt-get10:10:000
543420998275,5cyclictest596889-21kworker/u8:2+flush-179:010:05:231
543418998275,5cyclictest1-21systemd12:00:000
543420998174,5cyclictest557914-21kworker/u8:0+flush-179:008:35:251
543418998175,4cyclictest606460-21kworker/u8:1+events_unbound10:35:250
543418998074,4cyclictest628752-21kworker/u8:2+flush-179:011:35:170
543418998073,5cyclictest635134-21latency_hist11:55:000
543420997973,4cyclictest565671-21kworker/u8:3+flush-179:008:25:151
543418997770,5cyclictest643412-21kworker/u8:3+flush-179:012:30:220
543418997770,5cyclictest577261-21kworker/u8:0+events_unbound09:20:200
543420997667,7cyclictest646806-21apt-get12:30:111
543418997671,4cyclictest548325-21kworker/u8:2+flush-179:007:50:150
543418997669,5cyclictest557914-21kworker/u8:0+flush-179:007:55:160
543420997566,6cyclictest577261-21kworker/u8:0+flush-179:009:55:161
543420997554,18cyclictest604875-21latency_hist10:20:001
543418997569,4cyclictest557914-21kworker/u8:0+flush-179:008:05:260
543418997568,5cyclictest636531-21kworker/u8:1+flush-179:012:10:200
543418997467,5cyclictest624261-21apt-get11:20:130
543418997367,4cyclictest626638-21kworker/u8:3+flush-179:011:45:230
543418997362,8cyclictest614693-21apt-get10:50:110
543418997265,5cyclictest606460-21kworker/u8:1+flush-179:010:45:250
543418997265,5cyclictest577261-21kworker/u8:0+flush-179:009:35:000
543418997265,5cyclictest577261-21kworker/u8:0+flush-179:009:25:220
543418997264,6cyclictest580738-21latency_hist09:05:020
543418997162,6cyclictest548325-21kworker/u8:2+events_unbound08:30:130
543420997061,6cyclictest541817-21kworker/u8:0+flush-179:007:15:221
543420997049,19cyclictest559257-21latency_hist08:00:011
543418996962,4cyclictest577261-21kworker/u8:0+flush-179:010:15:230
543418996960,8cyclictest636779-21kworker/u8:2+flush-179:012:15:220
543418996959,8cyclictest1213033-21systemd-journal10:35:010
543420996860,5cyclictest572223-21kworker/u8:1+events_unbound09:00:241
543420996851,14cyclictest567250-21http08:25:011
543418996864,3cyclictest595053-21kworker/u8:1+flush-179:010:00:230
543418996861,5cyclictest548325-21kworker/u8:2+events_unbound08:20:140
543418996860,7cyclictest567738-21apt-get08:25:110
543420996663,2cyclictest714-21Xorg12:09:591
543420996657,7cyclictest583912-21latency_hist09:15:011
543420996655,9cyclictest596889-21kworker/u8:2+flush-179:010:10:251
543420996654,9cyclictest1213033-21systemd-journal07:55:001
543418996658,6cyclictest617077-21kworker/u8:0+events_unbound11:15:000
543423996562,2cyclictest0-21swapper/212:06:592
543420996557,6cyclictest626638-21kworker/u8:3+flush-179:011:50:011
543420996458,4cyclictest577261-21kworker/u8:0+events_unbound09:05:241
543420996455,6cyclictest606460-21kworker/u8:1+flush-179:010:55:141
543418996458,4cyclictest573884-21kworker/u8:2+flush-179:008:45:210
543418996454,8cyclictest636779-21kworker/u8:2+events_unbound12:20:260
543420996356,5cyclictest572808-21diskstats08:40:151
543420996356,5cyclictest541817-21kworker/u8:0+flush-179:007:30:161
543420996356,4cyclictest626638-21kworker/u8:3+events_unbound11:50:141
543420996353,7cyclictest572223-21kworker/u8:1+flush-179:008:50:001
543418996358,4cyclictest577261-21kworker/u8:0+flush-179:009:09:550
543418996356,5cyclictest551251-21kworker/u8:1+events_unbound07:35:160
543418996356,5cyclictest529342-21kworker/u8:2+flush-179:007:10:230
543418996252,8cyclictest619475-21apt-get11:05:130
4577091620,17ptp4l441ktimers/307:05:403
543420996150,9cyclictest606460-21kworker/u8:1+flush-179:010:35:221
543420996149,9cyclictest546535-21kworker/u8:1+events_unbound07:20:151
543418996156,3cyclictest622649-21kworker/u8:2+events_unbound11:15:220
543418996155,5cyclictest577261-21kworker/u8:0+events_unbound09:40:190
543418996153,5cyclictest1213033-21systemd-journal09:10:110
543418996152,6cyclictest541817-21kworker/u8:0+events_unbound07:15:140
54342399600,1cyclictest0-21swapper/210:42:592
543418996055,4cyclictest572223-21kworker/u8:1+events_unbound08:45:010
543420995949,7cyclictest592132-21kworker/u8:3+events_unbound09:45:141
543418995949,6cyclictest577261-21kworker/u8:0+events_unbound08:55:020
543423995855,2cyclictest0-21swapper/211:36:592
543420995846,11cyclictest577261-21kworker/u8:0+flush-179:010:25:251
543418995852,4cyclictest548325-21kworker/u8:2+flush-179:007:40:220
543420995751,4cyclictest554482-21latency_hist07:45:011
543420995650,5cyclictest617077-21kworker/u8:0+flush-179:011:20:231
543420995650,4cyclictest548325-21kworker/u8:2+flush-179:008:30:211
543420995647,7cyclictest636531-21kworker/u8:1+flush-179:012:15:011
543420995647,6cyclictest585513-21latency_hist09:20:011
543418995650,4cyclictest557914-21kworker/u8:0+events_unbound08:35:170
543420995548,6cyclictest577261-21kworker/u8:0+flush-179:009:30:011
543420995546,7cyclictest562438-21latency_hist08:10:011
543420995546,7cyclictest1213033-21systemd-journal11:06:021
543418995548,5cyclictest622649-21kworker/u8:2+flush-179:011:25:130
543418995540,7cyclictest548325-21kworker/u8:2+flush-179:008:15:100
543420995450,2cyclictest548325-21kworker/u8:2+flush-179:008:15:151
543420995432,20cyclictest630412-21systemd-run11:40:011
543418995450,3cyclictest582561-21kworker/u8:2+events_unbound09:15:160
543418995442,8cyclictest646530-21kworker/u8:0+flush-179:012:30:000
543420995350,2cyclictest646530-21kworker/u8:0+events_unbound12:35:151
543420995345,6cyclictest636531-21kworker/u8:1+flush-179:012:00:161
543420995345,5cyclictest628752-21kworker/u8:2+events_unbound11:40:241
543420995343,8cyclictest577261-21kworker/u8:0+flush-179:009:20:201
54342099530,1cyclictest0-21swapper/110:41:001
543423995249,2cyclictest0-21swapper/211:15:582
543420995245,5cyclictest617077-21kworker/u8:0+flush-179:011:10:151
543420995244,7cyclictest603263-21kworker/u8:3+flush-179:010:20:201
543420995146,4cyclictest551251-21kworker/u8:1+events_unbound07:35:241
543420995046,3cyclictest557914-21kworker/u8:0+flush-179:008:10:311
543420995045,4cyclictest606460-21kworker/u8:1+flush-179:010:50:241
543420995043,5cyclictest590544-21apt-get09:35:121
543420995040,8cyclictest529342-21kworker/u8:2+flush-179:007:15:001
543420994943,5cyclictest548325-21kworker/u8:2+flush-179:007:45:211
543420994942,6cyclictest626254-21kworker/u8:1+flush-179:011:25:211
543424994739,6cyclictest604891-21turbostat10:19:593
543418994537,6cyclictest636531-21kworker/u8:1+events_unbound12:00:140
543420994439,4cyclictest596228-21find09:50:221
543420994438,5cyclictest548325-21kworker/u8:2+events_unbound07:25:251
54342499430,41cyclictest0-21swapper/309:00:593
543420994236,4cyclictest582561-21kworker/u8:2+flush-179:009:41:571
543418994233,6cyclictest626254-21kworker/u8:1+events_unbound11:30:200
54342499410,40cyclictest614452-21turbostat10:50:013
54342499410,39cyclictest573864-21turbostat08:45:013
543420994134,5cyclictest626254-21kworker/u8:1+flush-179:011:30:151
543418994137,3cyclictest546535-21kworker/u8:1+flush-179:007:20:200
54342499400,5cyclictest570668-21turbostat08:34:593
54342499400,5cyclictest556074-21turbostat07:50:003
543424993934,4cyclictest644978-21turbostat12:25:003
543423993936,2cyclictest0-21swapper/211:08:592
543423993936,2cyclictest0-21swapper/210:20:592
543420993933,4cyclictest636779-21kworker/u8:2+flush-179:012:20:161
543418993935,2cyclictest714-21Xorg11:42:590
543424993836,1cyclictest0-21swapper/307:20:583
543423993834,2cyclictest0-21swapper/209:18:592
54342399380,35cyclictest0-21swapper/212:23:582
54342399380,35cyclictest0-21swapper/211:15:012
54342099380,37cyclictest0-21swapper/111:04:591
543424993735,1cyclictest0-21swapper/309:58:593
543424993735,1cyclictest0-21swapper/309:12:583
54342399370,35cyclictest0-21swapper/210:45:582
54342399370,35cyclictest0-21swapper/209:14:582
54342399370,2cyclictest0-21swapper/207:43:592
54341899370,36cyclictest0-21swapper/007:45:590
543424993634,1cyclictest0-21swapper/311:20:593
543424993634,1cyclictest0-21swapper/311:00:593
543424993634,1cyclictest0-21swapper/310:02:593
543424993634,1cyclictest0-21swapper/309:36:003
543424993634,1cyclictest0-21swapper/309:15:593
543424993634,1cyclictest0-21swapper/308:48:003
543424993634,1cyclictest0-21swapper/307:11:593
543424993633,2cyclictest0-21swapper/311:56:593
543424993633,2cyclictest0-21swapper/311:51:593
543424993633,2cyclictest0-21swapper/311:06:003
54342499360,35cyclictest0-21swapper/311:28:593
54342499360,35cyclictest0-21swapper/308:27:593
54342499360,35cyclictest0-21swapper/308:11:593
54342499360,35cyclictest0-21swapper/307:16:593
543423993633,2cyclictest0-21swapper/209:09:562
543420993631,4cyclictest622649-21kworker/u8:2+events_unbound11:15:131
543418993631,4cyclictest577261-21kworker/u8:0+flush-179:009:55:220
543424993533,1cyclictest0-21swapper/311:35:593
543424993533,1cyclictest0-21swapper/310:37:593
543424993533,1cyclictest0-21swapper/308:18:593
543424993533,1cyclictest0-21swapper/307:52:593
543424993533,1cyclictest0-21swapper/307:35:003
54342499350,1cyclictest0-21swapper/311:45:003
543423993533,1cyclictest0-21swapper/210:15:002
543420993532,2cyclictest611929-21kworker/u8:2+flush-179:010:45:161
543420993532,2cyclictest0-21swapper/108:05:001
543424993432,1cyclictest0-21swapper/308:24:593
543424993431,2cyclictest0-21swapper/312:12:593
543424993429,4cyclictest604891-21turbostat10:24:543
543423993330,2cyclictest0-21swapper/212:31:002
543423993330,2cyclictest0-21swapper/210:10:002
543423993330,2cyclictest0-21swapper/209:35:592
543423993330,1cyclictest0-21swapper/207:54:592
543423993329,2cyclictest0-21swapper/210:25:592
543418993328,4cyclictest543431-21latency_hist07:10:010
543424993230,1cyclictest0-21swapper/309:23:003
543424993230,1cyclictest0-21swapper/307:42:583
543423993229,2cyclictest0-21swapper/208:35:592
543424993129,1cyclictest0-21swapper/312:27:593
543424993129,1cyclictest0-21swapper/308:01:593
54342499310,28cyclictest0-21swapper/309:05:133
543423993128,2cyclictest0-21swapper/211:55:592
543423993128,2cyclictest0-21swapper/211:33:592
543424993026,2cyclictest0-21swapper/307:25:143
543424993024,5cyclictest623987-21turbostat11:20:003
543424993024,5cyclictest612864-21turbostat10:45:003
543423993027,2cyclictest0-21swapper/208:56:582
543423993027,2cyclictest0-21swapper/208:20:122
543423993026,2cyclictest0-21swapper/210:30:582
54342399300,2cyclictest0-21swapper/208:50:142
543424992926,2cyclictest0-21swapper/312:15:133
543424992925,3cyclictest648154-21turbostat12:35:013
543424992923,5cyclictest639924-21turbostat12:10:003
543424992923,5cyclictest588704-21turbostat09:30:003
54342499290,2cyclictest0-21swapper/310:10:123
54342499290,27cyclictest0-21swapper/310:50:133
54342499290,27cyclictest0-21swapper/308:55:003
543423992927,1cyclictest0-21swapper/207:20:002
543423992926,2cyclictest0-21swapper/212:11:592
543423992926,2cyclictest0-21swapper/210:55:132
543423992926,2cyclictest0-21swapper/209:25:132
543423992926,2cyclictest0-21swapper/207:55:142
54342399290,27cyclictest0-21swapper/210:15:132
54342399290,27cyclictest0-21swapper/209:45:582
54342499280,27cyclictest0-21swapper/308:55:013
54342499280,26cyclictest0-21swapper/311:45:143
54342499280,26cyclictest0-21swapper/309:45:123
54342499280,26cyclictest0-21swapper/309:30:123
54342499280,1cyclictest0-21swapper/312:40:023
543423992826,1cyclictest0-21swapper/208:00:112
543423992825,2cyclictest0-21swapper/211:45:152
543423992825,2cyclictest0-21swapper/210:50:132
543423992825,2cyclictest0-21swapper/208:48:002
543423992825,2cyclictest0-21swapper/208:26:592
543423992825,2cyclictest0-21swapper/207:25:142
54342399280,2cyclictest0-21swapper/211:20:142
54342399280,2cyclictest0-21swapper/211:04:552
54342399280,26cyclictest0-21swapper/211:52:592
54342399280,26cyclictest0-21swapper/211:25:112
54342399280,26cyclictest0-21swapper/210:00:122
54342399280,26cyclictest0-21swapper/207:21:592
543424992725,1cyclictest0-21swapper/309:40:113
543424992725,1cyclictest0-21swapper/308:39:553
543423992724,2cyclictest0-21swapper/209:58:592
543423992724,2cyclictest0-21swapper/209:41:002
543423992724,2cyclictest0-21swapper/207:11:592
54342399270,25cyclictest0-21swapper/209:32:592
4577091270,6ptp4l441ktimers/310:30:003
54342499260,1cyclictest0-21swapper/308:07:003
543423992623,2cyclictest0-21swapper/210:38:002
543423992622,2cyclictest0-21swapper/211:42:592
54342399260,2cyclictest0-21swapper/208:12:592
54342399260,2cyclictest0-21swapper/207:34:002
54342399260,24cyclictest0-21swapper/212:17:592
4577091260,7ptp4l61490irq/134-eno1-TxRx-012:04:553
4577091260,6ptp4l61490irq/134-eno1-TxRx-007:59:593
4577091260,6ptp4l61490irq/134-eno1-TxRx-007:40:003
4577091260,6ptp4l441ktimers/309:54:563
4577091260,5ptp4l61490irq/134-eno1-TxRx-011:35:003
543424992523,1cyclictest0-21swapper/311:12:593
543423992522,2cyclictest0-21swapper/209:52:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-010:10:003
4577091250,5ptp4l441ktimers/310:35:013
231999250,9rtkit-daemon659750-21ntpd07:05:031
543423992421,2cyclictest0-21swapper/209:20:132
4577091240,5ptp4l441ktimers/311:00:003
543423992320,2cyclictest0-21swapper/212:37:592
543423992320,2cyclictest0-21swapper/208:15:592
543423992320,2cyclictest0-21swapper/207:48:592
543423992219,2cyclictest0-21swapper/208:42:582
543423991917,1cyclictest0-21swapper/212:25:592
543423991815,2cyclictest0-21swapper/209:04:002
543423991412,1cyclictest0-21swapper/208:10:002
543423991411,2cyclictest0-21swapper/212:01:592
54342399118,2cyclictest0-21swapper/208:34:552
5434239975,1cyclictest0-21swapper/207:40:002
5434239930,2cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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