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2026-08-04 - 18:05
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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 Tue Aug 04, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
408032399130119,7cyclictest4177407-21latency_hist12:10:011
408032399126116,7cyclictest4137340-21latency_hist10:05:011
408032099126118,6cyclictest4125965-21kworker/u8:3+events_unbound09:45:010
408032399125108,15cyclictest4094828-21kworker/u8:2+flush-179:008:00:001
408032099124118,4cyclictest4138359-21kworker/u8:1+flush-179:010:15:180
408032099124111,10cyclictest4150339-21latency_hist10:45:010
408032099123115,6cyclictest4125965-21kworker/u8:3+events_unbound09:40:010
408032399117110,5cyclictest4096447-21apt-get08:00:021
408032099117111,4cyclictest4143224-21kworker/u8:0+events_unbound10:50:000
408032099116108,5cyclictest4096530-21kworker/u8:3+events_unbound08:25:010
408032099115107,6cyclictest4086584-21kworker/u8:0+flush-179:007:30:240
408032399114104,7cyclictest4124343-21latency_hist09:25:011
408032399114102,10cyclictest4114702-21/usr/sbin/munin08:55:241
408032099114105,7cyclictest4117125-21kworker/u8:2+flush-179:009:15:020
408032099114105,6cyclictest4109744-21kworker/u8:0+events_unbound09:35:000
4080320991121,108cyclictest1-21systemd08:40:000
40803239910997,9cyclictest4175821-21latency_hist12:05:001
408032099109102,5cyclictest4084977-21kworker/u8:3+events_unbound07:25:250
408032099109101,6cyclictest4109744-21kworker/u8:0+events_unbound09:24:590
40803209910797,6cyclictest4171031-21kworker/u8:3+flush-179:012:00:210
40803209910790,13cyclictest1213033-21systemd-journal10:15:000
408032099107100,5cyclictest4147124-21kworker/u8:3+flush-179:010:55:230
40803209910695,8cyclictest4095093-21apt-get07:55:130
40803209910598,4cyclictest4143224-21kworker/u8:0+flush-179:011:00:210
40803209910597,6cyclictest4075719-21kworker/u8:0+flush-179:007:15:010
40803209910595,7cyclictest4075719-21kworker/u8:0+flush-179:007:20:000
40803209910495,7cyclictest4143224-21kworker/u8:0+events_unbound10:30:010
40803209910386,6cyclictest4143224-21kworker/u8:0+events_unbound10:35:010
40803209910386,6cyclictest4143224-21kworker/u8:0+events_unbound10:35:010
40803209910296,4cyclictest4125965-21kworker/u8:3+events_unbound10:05:230
40803209910192,6cyclictest4171023-21kworker/u8:0+flush-179:012:10:020
40803239910090,7cyclictest4114463-21latency_hist08:55:021
40803239910090,7cyclictest4114463-21latency_hist08:55:011
40803239910086,12cyclictest4130721-21apt-get09:45:001
4080323999888,6cyclictest4094828-21kworker/u8:2+flush-179:007:55:011
4080323999789,6cyclictest4108353-21apt-get08:35:121
4080320999791,4cyclictest4086584-21kworker/u8:0+flush-179:007:50:160
4080320999788,6cyclictest4171031-21kworker/u8:3+events_unbound12:15:150
4080320999788,5cyclictest4109744-21kworker/u8:0+events_unbound08:50:020
4080320999786,9cyclictest4119248-21apt-get09:06:000
4080320999784,9cyclictest1213033-21systemd-journal08:15:010
4080320999686,6cyclictest4096530-21kworker/u8:3+flush-179:008:30:270
4080320999684,9cyclictest4117125-21kworker/u8:2+events_unbound09:05:000
4080323999483,8cyclictest4180846-21latency_hist12:20:011
4080320999488,4cyclictest4109744-21kworker/u8:0+events_unbound09:55:260
4080320999385,5cyclictest4171023-21kworker/u8:0+events_unbound11:55:150
4080320999383,6cyclictest4125965-21kworker/u8:3+flush-179:009:45:210
4080320999381,8cyclictest4084977-21kworker/u8:3+flush-179:007:35:160
4080323999285,5cyclictest4075719-21kworker/u8:0+flush-179:007:15:251
4080323999284,5cyclictest4161458-21kworker/u8:0+flush-179:011:35:181
4080320999281,7cyclictest4163318-21kworker/u8:1+flush-179:011:30:130
4080323999180,9cyclictest4182709-21apt-get12:25:131
4080320999084,4cyclictest4109744-21kworker/u8:0+flush-179:008:55:240
4080320999082,6cyclictest4109744-21kworker/u8:0+events_unbound10:05:020
4080320999082,6cyclictest4100172-21kworker/u8:1+events_unbound08:45:000
4080323998979,7cyclictest4169451-21latency_hist11:45:011
4080320998983,4cyclictest4161458-21kworker/u8:0+flush-179:011:35:280
4080320998982,5cyclictest4125965-21kworker/u8:3+flush-179:009:50:170
4080320998882,4cyclictest4185617-21kworker/u8:0+flush-179:012:35:230
4080320998882,4cyclictest4182487-21kworker/u8:2+flush-179:012:30:180
4080320998879,6cyclictest4161458-21kworker/u8:0+events_unbound11:25:150
4080323998776,8cyclictest4148739-21latency_hist10:40:011
4080320998781,5cyclictest4100172-21kworker/u8:1+flush-179:008:25:190
4080320998780,5cyclictest4075719-21kworker/u8:0+flush-179:007:20:220
4080323998676,8cyclictest4181121-21apt-get12:20:121
4080320998479,3cyclictest4171031-21kworker/u8:3+flush-179:011:50:140
4080320998477,5cyclictest4117125-21kworker/u8:2+flush-179:009:15:270
4080323998367,12cyclictest1213033-21systemd-journal07:25:001
4080320998376,4cyclictest4096530-21kworker/u8:3+flush-179:008:00:150
4080320998373,7cyclictest4143224-21kworker/u8:0+flush-179:010:35:250
4080323998276,5cyclictest4185617-21kworker/u8:0+flush-179:012:35:261
4080323998170,8cyclictest4142926-21diskstats10:20:151
4080323998068,9cyclictest4106508-21latency_hist08:30:021
4080320998074,4cyclictest4143224-21kworker/u8:0+flush-179:011:05:250
4080323997973,4cyclictest4172882-21apt-get11:55:131
4080320997973,4cyclictest4096530-21kworker/u8:3+flush-179:008:20:010
4080320997871,4cyclictest4075719-21kworker/u8:0+events_unbound07:10:020
4080323997771,4cyclictest4117125-21kworker/u8:2+flush-179:009:04:541
4080320997772,3cyclictest4182428-21kworker/u8:1+flush-179:012:25:230
4080323997663,9cyclictest1213033-21systemd-journal08:20:001
4080320997668,5cyclictest4086584-21kworker/u8:0+events_unbound07:45:160
4080320997568,4cyclictest4163318-21kworker/u8:1+events_unbound11:45:130
4080320997567,5cyclictest4163318-21kworker/u8:1+events_unbound11:40:220
4080323997461,11cyclictest1213033-21systemd-journal09:53:011
4080320997462,5cyclictest4084977-21kworker/u8:3+events_unbound07:40:220
4080320997368,3cyclictest4159861-21kworker/u8:1+flush-179:011:15:200
4080320997367,4cyclictest4155359-21kworker/u8:2+flush-179:011:24:560
4080323997264,6cyclictest4159861-21kworker/u8:1+flush-179:011:15:251
4080323997263,6cyclictest4185626-21latency_hist12:35:021
4080323997262,6cyclictest4096530-21kworker/u8:3+flush-179:008:05:221
4080320997265,5cyclictest4171023-21kworker/u8:0+flush-179:012:05:160
4080320997265,5cyclictest1213033-21systemd-journal12:22:010
4080323997166,3cyclictest4165027-21kworker/u8:2+flush-179:011:30:231
4080323997062,5cyclictest4147124-21kworker/u8:3+flush-179:010:55:261
4080323996858,7cyclictest4109744-21kworker/u8:0+flush-179:009:10:241
4080320996859,7cyclictest4094828-21kworker/u8:2+events_unbound08:10:000
4080323996759,5cyclictest4159882-21latency_hist11:15:001
4080323996656,8cyclictest4080465-21/usr/sbin/munin07:10:161
4080320996659,4cyclictest4155359-21kworker/u8:2+events_unbound11:10:120
4080320996456,5cyclictest4152181-21apt-get10:50:110
4080323996155,5cyclictest4100172-21kworker/u8:1+flush-179:008:20:171
4080320996157,3cyclictest4138359-21kworker/u8:1+flush-179:010:20:230
4080323996052,6cyclictest4147124-21kworker/u8:3+flush-179:010:40:231
4080323996052,6cyclictest4109744-21kworker/u8:0+flush-179:009:55:241
4080323995851,5cyclictest4125965-21kworker/u8:3+flush-179:009:45:211
4080323995847,8cyclictest4092988-21latency_hist07:50:011
4080320995851,5cyclictest4109744-21kworker/u8:0+events_unbound08:50:190
4080320995851,5cyclictest4109744-21kworker/u8:0+events_unbound08:50:190
4080323995743,10cyclictest4084977-21kworker/u8:3+flush-179:007:35:231
4080326995648,6cyclictest4088193-21turbostat07:35:003
4080323995647,6cyclictest4172624-21latency_hist11:55:011
4080320995650,4cyclictest4120631-21kworker/u8:1+events_unbound09:25:270
4080323995547,6cyclictest1213033-21systemd-journal08:34:551
4080323995346,5cyclictest4164667-21latency_hist11:30:011
4080323995345,6cyclictest4127773-21apt-get09:35:131
4080323995245,5cyclictest4086853-21apt-get07:30:121
4080323995244,6cyclictest4150595-21apt-get10:45:111
4080323995242,7cyclictest4138359-21kworker/u8:1+flush-179:010:30:131
4080323995242,7cyclictest4138359-21kworker/u8:1+flush-179:010:30:131
4577091500,14ptp4l441ktimers/307:10:003
4080323995046,2cyclictest4117125-21kworker/u8:2+flush-179:009:15:221
4080326994946,2cyclictest431rcuc/310:24:553
4080323994840,6cyclictest4155360-21/usr/sbin/munin11:00:171
4080323994741,2cyclictest4175856-21kworker/u8:1+flush-179:012:10:161
4080323994739,6cyclictest4090072-21apt-get07:40:121
4080323994641,3cyclictest4143224-21kworker/u8:0+events_unbound10:55:011
4080323994639,5cyclictest4094828-21kworker/u8:2+flush-179:008:10:261
4080324994541,2cyclictest0-21swapper/210:31:592
4080324994541,2cyclictest0-21swapper/210:31:592
4080323994536,7cyclictest1213033-21systemd-journal11:21:011
4080323994536,6cyclictest0-21swapper/109:08:001
4080323994341,1cyclictest4086584-21kworker/u8:0+flush-179:007:29:591
4080323994336,5cyclictest4109964-21apt-get08:40:121
4080323994319,10cyclictest0-21swapper/108:45:231
4080324994240,1cyclictest0-21swapper/209:09:592
4080324994239,2cyclictest0-21swapper/212:40:002
4080323994236,5cyclictest4125965-21kworker/u8:3+flush-179:010:05:141
4080323994235,5cyclictest4125965-21kworker/u8:3+flush-179:010:10:251
408032699410,39cyclictest4179260-21turbostat12:15:003
408032399417,17cyclictest0-21swapper/111:45:211
4080324994038,1cyclictest0-21swapper/209:20:012
408032399401,37cyclictest714-21Xorg11:07:591
408032399400,4cyclictest4124351-21turbostat09:29:541
4080324993937,1cyclictest0-21swapper/211:35:002
408032499390,36cyclictest0-21swapper/209:35:002
4080323993934,3cyclictest714-21Xorg10:30:001
408032399391,2cyclictest714-21Xorg10:17:591
408032499380,36cyclictest0-21swapper/210:24:002
408032499380,35cyclictest0-21swapper/208:35:002
4080323993810,11cyclictest4126194-21grep09:30:131
4080326993730,5cyclictest4112892-21turbostat08:50:013
408032699370,36cyclictest0-21swapper/311:26:593
4080324993734,2cyclictest0-21swapper/212:28:592
4080324993734,2cyclictest0-21swapper/211:12:592
4080324993734,2cyclictest0-21swapper/210:10:592
408032499370,35cyclictest0-21swapper/212:31:592
408032499370,35cyclictest0-21swapper/211:02:592
408032499370,35cyclictest0-21swapper/210:00:592
408032499370,35cyclictest0-21swapper/209:30:002
408032499370,2cyclictest0-21swapper/210:55:592
4080326993634,1cyclictest0-21swapper/312:24:553
4080326993634,1cyclictest0-21swapper/307:26:003
4080326993631,4cyclictest4088193-21turbostat07:39:563
408032699360,35cyclictest0-21swapper/311:01:593
408032699360,35cyclictest0-21swapper/309:36:583
408032699360,35cyclictest0-21swapper/309:22:593
408032699360,1cyclictest0-21swapper/311:40:593
408032699360,1cyclictest0-21swapper/309:29:003
4080324993633,2cyclictest0-21swapper/207:57:592
4080324993633,2cyclictest0-21swapper/207:28:002
408032499360,2cyclictest0-21swapper/207:32:592
408032499360,1cyclictest0-21swapper/209:49:592
4080326993533,1cyclictest0-21swapper/308:00:593
4080326993532,2cyclictest431rcuc/307:59:553
4080326993532,2cyclictest0-21swapper/310:53:593
4080326993532,2cyclictest0-21swapper/310:25:593
4080326993528,5cyclictest4163092-21turbostat11:25:003
4080324993533,1cyclictest0-21swapper/208:05:002
4080324993532,2cyclictest0-21swapper/208:24:002
4080324993532,2cyclictest0-21swapper/207:17:592
408032499350,1cyclictest0-21swapper/209:55:012
4577091340,4ptp4l441ktimers/308:45:003
4080326993432,1cyclictest0-21swapper/311:58:593
4080326993432,1cyclictest0-21swapper/311:39:593
4080326993432,1cyclictest0-21swapper/310:44:553
4080326993432,1cyclictest0-21swapper/308:52:593
4080326993432,1cyclictest0-21swapper/308:52:593
4080324993431,2cyclictest0-21swapper/209:24:592
4080326993331,1cyclictest0-21swapper/312:09:543
4080326993331,1cyclictest0-21swapper/308:12:003
4080326993330,2cyclictest0-21swapper/308:26:003
408032499330,30cyclictest0-21swapper/208:30:002
4080326993230,1cyclictest0-21swapper/308:34:593
408032699320,31cyclictest0-21swapper/307:21:593
4080324993229,2cyclictest0-21swapper/209:12:592
4080326993129,1cyclictest0-21swapper/310:18:003
4080326993129,1cyclictest0-21swapper/309:52:593
408032699310,30cyclictest0-21swapper/310:35:593
4080324993128,2cyclictest0-21swapper/209:44:552
4080326993028,1cyclictest0-21swapper/312:16:593
4080326993027,2cyclictest4127537-21turbostat09:35:003
408032699300,29cyclictest0-21swapper/310:58:593
408032699300,28cyclictest0-21swapper/311:05:143
4080324993027,2cyclictest0-21swapper/211:56:582
4080324993027,2cyclictest0-21swapper/210:50:592
4080324993027,2cyclictest0-21swapper/209:56:592
4080324993027,2cyclictest0-21swapper/208:59:552
4080324993025,2cyclictest0-21swapper/209:00:152
408032499300,2cyclictest0-21swapper/208:45:112
4577091290,6ptp4l441ktimers/310:14:563
4080326992927,1cyclictest0-21swapper/312:01:593
4080326992927,1cyclictest0-21swapper/309:45:033
4080326992927,1cyclictest0-21swapper/308:09:593
4080326992927,1cyclictest0-21swapper/307:40:153
4080326992926,2cyclictest0-21swapper/312:35:143
4080326992926,2cyclictest0-21swapper/309:44:593
408032699290,2cyclictest0-21swapper/309:10:013
408032699290,28cyclictest0-21swapper/307:19:553
408032699290,27cyclictest0-21swapper/310:05:113
4080324992927,1cyclictest0-21swapper/211:49:552
4080324992926,2cyclictest0-21swapper/212:15:122
4080324992926,2cyclictest0-21swapper/210:05:032
4080324992926,2cyclictest0-21swapper/207:50:122
408032499290,27cyclictest0-21swapper/211:20:152
408032499290,27cyclictest0-21swapper/208:10:592
408032499290,27cyclictest0-21swapper/208:05:132
408032499290,27cyclictest0-21swapper/207:20:122
4080326992826,1cyclictest0-21swapper/310:30:123
4080326992826,1cyclictest0-21swapper/310:30:123
4080326992826,1cyclictest0-21swapper/308:15:593
4080326992825,2cyclictest0-21swapper/311:45:123
4080326992825,2cyclictest0-21swapper/310:48:593
4080326992825,2cyclictest0-21swapper/309:10:023
4080326992825,2cyclictest0-21swapper/307:45:143
408032699280,2cyclictest0-21swapper/308:55:153
408032699280,26cyclictest0-21swapper/309:15:143
408032699280,26cyclictest0-21swapper/308:35:133
408032699280,26cyclictest0-21swapper/307:50:013
408032699280,21cyclictest0-21swapper/311:15:133
4080324992825,2cyclictest0-21swapper/212:10:032
4080324992825,2cyclictest0-21swapper/208:42:592
4080324992825,2cyclictest0-21swapper/207:35:132
408032499280,2cyclictest0-21swapper/211:35:152
408032499280,26cyclictest0-21swapper/210:44:592
4080326992725,1cyclictest0-21swapper/310:00:163
408032699270,4cyclictest4135763-21turbostat10:00:003
4080324992725,1cyclictest0-21swapper/209:39:592
4080324992724,2cyclictest0-21swapper/210:37:592
408032499270,26cyclictest0-21swapper/212:00:592
4577091260,3ptp4l441ktimers/311:54:593
4080326992624,1cyclictest0-21swapper/311:34:553
4080324992623,2cyclictest0-21swapper/210:48:592
4080324992623,1cyclictest0-21swapper/211:27:592
408032499260,2cyclictest0-21swapper/207:42:002
408032499260,24cyclictest0-21swapper/207:12:002
231999260,15rtkit-daemon4078920-21cpu07:05:161
4577091250,5ptp4l61490irq/134-eno1-TxRx-011:14:553
4577091250,5ptp4l61490irq/134-eno1-TxRx-008:24:553
4080326992523,1cyclictest0-21swapper/307:12:003
408032699250,24cyclictest0-21swapper/312:34:593
4080324992523,1cyclictest0-21swapper/210:29:592
4080324992523,1cyclictest0-21swapper/208:40:002
4577091240,3ptp4l61490irq/134-eno1-TxRx-012:30:013
4577091240,3ptp4l61490irq/134-eno1-TxRx-009:04:553
4080324992422,1cyclictest0-21swapper/212:22:002
4080324992421,2cyclictest0-21swapper/211:50:592
4080324992421,2cyclictest0-21swapper/211:06:592
4080324992420,2cyclictest0-21swapper/208:54:562
4080324992420,2cyclictest0-21swapper/208:54:552
4080324992321,1cyclictest0-21swapper/208:18:592
4080324992218,2cyclictest0-21swapper/211:15:592
4080324992118,2cyclictest0-21swapper/207:45:152
4080324991916,2cyclictest0-21swapper/210:15:592
4080324991510,3cyclictest4169456-21turbostat11:45:002
408032499107,2cyclictest0-21swapper/212:07:002
40803249940,2cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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