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2026-03-11 - 15:29
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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 Wed Mar 11, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21854249910695,8cyclictest266-21systemd-journal09:50:001
21854249910288,11cyclictest2201322-21apt-get08:00:011
2185424999991,5cyclictest2207275-21kworker/u8:0+events_unbound08:20:001
2185424999786,9cyclictest2201322-21apt-get08:00:031
2185424999786,9cyclictest2201322-21apt-get08:00:021
2185424999584,8cyclictest2243723-21latency_hist10:10:011
2185424999384,6cyclictest2229442-21kworker/u8:1+flush-179:009:35:221
2185424999081,6cyclictest2208245-21kworker/u8:2+events_unbound09:20:191
2185424998979,7cyclictest2207275-21kworker/u8:0+flush-179:008:55:201
2185424998775,10cyclictest2206351-21apt-get08:15:001
2185424998681,4cyclictest2198316-21kworker/u8:0+flush-179:007:55:011
2185424998678,6cyclictest2234225-21kworker/u8:0+flush-179:009:50:191
2185421998675,8cyclictest2285619-21latency_hist12:20:000
2185424998577,5cyclictest2240587-21kworker/u8:3+events_unbound10:20:191
2185424998470,5cyclictest2277637-21kworker/u8:0+flush-179:012:20:001
2185424998377,4cyclictest2169285-21kworker/u8:3+events_unbound07:10:241
2185424998375,6cyclictest2240587-21kworker/u8:3+events_unbound10:00:231
2185421998375,6cyclictest2234184-21latency_hist09:40:020
2185424998277,3cyclictest2277637-21kworker/u8:0+events_unbound12:10:231
2185424998276,4cyclictest2286920-21kworker/u8:1+events_unbound12:25:201
2185424998275,5cyclictest2234225-21kworker/u8:0+flush-179:010:30:001
2185424998072,7cyclictest2225962-21apt-get09:15:041
2185424998072,7cyclictest2225962-21apt-get09:15:031
2185424998072,6cyclictest2259875-21kworker/u8:1+events_unbound11:10:001
2185424997974,4cyclictest2208245-21kworker/u8:2+events_unbound08:25:221
2185424997974,4cyclictest2208245-21kworker/u8:2+events_unbound08:25:221
2185424997971,6cyclictest2273135-21/usr/sbin/munin11:40:231
2185424997873,3cyclictest2186885-21kworker/u8:0+events_unbound07:20:251
2185424997871,5cyclictest2231233-21kworker/u8:2+flush-179:009:30:211
2185424997870,6cyclictest2234225-21kworker/u8:0+events_unbound10:20:001
2185424997770,5cyclictest2208245-21kworker/u8:2+flush-179:009:05:001
2185424997671,3cyclictest2182342-21kworker/u8:2+flush-179:007:15:241
2185424997670,4cyclictest2256692-21kworker/u8:3+flush-179:010:50:191
2185424997669,5cyclictest2256692-21kworker/u8:3+flush-179:011:50:251
2185424997669,5cyclictest2186888-21kworker/u8:1+events_unbound07:30:241
2185424997667,7cyclictest2240587-21kworker/u8:3+events_unbound10:10:191
2185424997666,4cyclictest2207275-21kworker/u8:0+events_unbound09:30:011
2185424997569,4cyclictest2277687-21kworker/u8:1+flush-179:012:05:201
2185424997569,4cyclictest2207275-21kworker/u8:0+flush-179:009:10:251
2185424997366,4cyclictest2256692-21kworker/u8:3+events_unbound11:20:191
2185424997267,4cyclictest2191725-21kworker/u8:3+flush-179:007:40:011
2185424997163,5cyclictest2256692-21kworker/u8:3+flush-179:011:45:201
2185424997163,5cyclictest2182342-21kworker/u8:2+flush-179:007:40:221
2185424997062,6cyclictest2261494-21latency_hist11:05:011
2185424997060,4cyclictest2229442-21kworker/u8:1+events_unbound10:00:001
2185424996962,5cyclictest2256692-21kworker/u8:3+flush-179:011:25:191
2185421996964,4cyclictest2250384-21kworker/u8:2+events_unbound10:43:360
2185424996864,3cyclictest2250384-21kworker/u8:2+flush-179:010:39:561
2185421996863,4cyclictest2263115-21kworker/u8:2+events_unbound11:34:190
2185421996763,3cyclictest2240587-21kworker/u8:3+events_unbound10:23:320
2185424996660,5cyclictest2269591-21kworker/u8:1+flush-179:011:40:001
2185424996660,5cyclictest2256692-21kworker/u8:3+flush-179:010:50:001
2185424996659,5cyclictest2256692-21kworker/u8:3+flush-179:011:10:211
2185424996658,6cyclictest2201216-21kworker/u8:1+flush-179:008:05:211
2185421996661,4cyclictest2207275-21kworker/u8:0+events_unbound08:24:180
2185424996559,5cyclictest2269591-21kworker/u8:1+events_unbound11:35:011
2185424996553,4cyclictest2208245-21kworker/u8:2+events_unbound08:50:221
218542199650,64cyclictest0-21swapper/008:15:000
2185424996459,4cyclictest2207275-21kworker/u8:0+events_unbound08:20:221
2185424996358,4cyclictest2208245-21kworker/u8:2+events_unbound08:30:231
218542499620,61cyclictest1-21systemd07:30:001
2185421996258,3cyclictest2240587-21kworker/u8:3+events_unbound10:02:170
2185421996156,4cyclictest2234225-21kworker/u8:0+events_unbound10:07:190
2185421996156,4cyclictest2182342-21kworker/u8:2+events_unbound07:42:560
2185421996156,4cyclictest2182342-21kworker/u8:2+events_unbound07:28:190
2185424996053,5cyclictest2263115-21kworker/u8:2+flush-179:011:55:101
2185421996056,3cyclictest2263115-21kworker/u8:2+events_unbound11:49:190
2185421996056,3cyclictest2250384-21kworker/u8:2+events_unbound10:38:190
2185421996056,3cyclictest2191725-21kworker/u8:3+events_unbound07:48:200
2185424995955,3cyclictest2259875-21kworker/u8:1+flush-179:011:15:261
2185424995953,5cyclictest2250384-21kworker/u8:2+flush-179:010:40:241
2185421995955,3cyclictest2240587-21kworker/u8:3+events_unbound10:13:190
2185421995954,4cyclictest2186888-21kworker/u8:1+events_unbound07:20:030
2185421995954,4cyclictest2186888-21kworker/u8:1+events_unbound07:18:200
2185421995954,3cyclictest1-21systemd12:06:180
2185421995950,6cyclictest2279243-21latency_hist12:00:010
2185421995948,9cyclictest2258553-21apt-get10:55:110
2185424995852,4cyclictest2207275-21kworker/u8:0+events_unbound08:45:121
2185424995851,5cyclictest2232562-21kworker/u8:3+flush-179:009:40:221
2185424995850,5cyclictest2208245-21kworker/u8:2+flush-179:008:40:151
2185421995854,3cyclictest2207275-21kworker/u8:0+events_unbound09:30:030
2185421995853,4cyclictest2207275-21kworker/u8:0+events_unbound09:10:020
2185424995749,6cyclictest2286920-21kworker/u8:1+flush-179:012:35:151
2185424995749,5cyclictest2249426-21kworker/u8:1+flush-179:010:30:191
2185421995752,4cyclictest2207275-21kworker/u8:0+events_unbound08:35:020
2185424995652,3cyclictest2286920-21kworker/u8:1+flush-179:012:30:111
2185424995651,4cyclictest2208245-21kworker/u8:2+events_unbound09:05:261
2185421995650,4cyclictest2256692-21kworker/u8:3+events_unbound11:25:030
2185421995647,7cyclictest2286139-21apt-get12:20:100
2185421995547,6cyclictest2237359-21latency_hist09:50:010
2185421995545,8cyclictest2289572-21apt-get12:30:090
2185421995450,3cyclictest2207275-21kworker/u8:0+events_unbound09:17:190
2185421995450,3cyclictest2207275-21kworker/u8:0+events_unbound09:17:190
2185421995450,3cyclictest2191725-21kworker/u8:3+events_unbound07:52:560
2185421995443,8cyclictest2292491-21latency_hist12:40:010
2185421995349,3cyclictest2207275-21kworker/u8:0+events_unbound09:26:180
2185421995349,3cyclictest2201216-21kworker/u8:1+events_unbound08:01:020
2185421995349,3cyclictest2201216-21kworker/u8:1+events_unbound08:01:020
2185421995247,4cyclictest2259875-21kworker/u8:1+events_unbound11:15:030
2185421995147,3cyclictest2208245-21kworker/u8:2+events_unbound08:52:180
2185424995044,4cyclictest2191725-21kworker/u8:3+flush-179:007:45:111
2185421995045,4cyclictest2229442-21kworker/u8:1+events_unbound09:58:190
218542199501,46cyclictest2216173-21apt08:45:010
4577091490,13ptp4l441ktimers/307:10:003
2185421994943,3cyclictest2208245-21kworker/u8:2+events_unbound08:34:200
2185421994844,3cyclictest2243758-21kworker/u8:2+events_unbound10:15:010
2185421994844,3cyclictest2207275-21kworker/u8:0+events_unbound08:28:190
2185421994844,3cyclictest2207275-21kworker/u8:0+events_unbound08:28:190
2185421994843,4cyclictest2229442-21kworker/u8:1+events_unbound09:51:190
2185421994840,6cyclictest2221186-21latency_hist09:00:010
2185421994743,3cyclictest2263115-21kworker/u8:2+events_unbound11:22:180
2185421994743,3cyclictest2240587-21kworker/u8:3+events_unbound10:25:050
2185421994742,4cyclictest2263115-21kworker/u8:2+events_unbound12:00:160
2185421994742,4cyclictest2191725-21kworker/u8:3+events_unbound07:56:000
2185421994541,3cyclictest2259875-21kworker/u8:1+events_unbound11:12:190
2185421994541,3cyclictest2208245-21kworker/u8:2+events_unbound09:03:100
2185421994541,3cyclictest2207275-21kworker/u8:0+events_unbound08:17:180
2185421994541,3cyclictest2186888-21kworker/u8:1+events_unbound07:12:530
2185421994538,5cyclictest2204757-21latency_hist08:10:010
2185421994534,8cyclictest2272908-21awk11:40:010
218542199450,43cyclictest714-21Xorg11:03:000
2185424994440,3cyclictest29-21ksoftirqd/108:36:591
2185424994439,4cyclictest2253577-21kworker/u8:0+flush-179:010:55:161
2185421994440,3cyclictest2256692-21kworker/u8:3+events_unbound11:05:070
2185421994437,5cyclictest2274481-21latency_hist11:45:010
2185424994339,3cyclictest2282667-21kworker/u8:2+events_unbound12:20:131
2185424994128,8cyclictest2277687-21kworker/u8:1+events_unbound12:00:221
2185421994037,2cyclictest0-21swapper/010:31:580
218542199400,38cyclictest714-21Xorg10:52:590
218543099390,37cyclictest0-21swapper/309:54:003
218543099390,35cyclictest0-21swapper/310:34:593
218542699390,30cyclictest0-21swapper/212:03:002
2185421993932,5cyclictest2229409-21latency_hist09:25:000
2185421993930,7cyclictest2256692-21kworker/u8:3+flush-179:011:50:230
218542199390,37cyclictest714-21Xorg09:06:590
2185426993834,2cyclictest0-21swapper/211:35:592
2185426993834,2cyclictest0-21swapper/211:19:552
218542699380,36cyclictest0-21swapper/209:49:592
218542699380,35cyclictest0-21swapper/209:53:592
2185421993834,3cyclictest714-21Xorg08:46:000
218542199380,37cyclictest0-21swapper/009:43:590
2185430993734,2cyclictest0-21swapper/309:30:593
218543099370,36cyclictest0-21swapper/312:02:593
2185426993734,2cyclictest0-21swapper/211:22:592
2185426993734,2cyclictest0-21swapper/211:12:582
2185426993734,2cyclictest0-21swapper/210:20:592
2185426993733,2cyclictest0-21swapper/211:44:552
218542199370,36cyclictest0-21swapper/010:48:590
218543099360,35cyclictest0-21swapper/308:54:553
2185426993634,1cyclictest0-21swapper/208:54:592
2185426993633,2cyclictest0-21swapper/208:01:002
2185426993633,2cyclictest0-21swapper/208:01:002
2185426993632,2cyclictest0-21swapper/208:59:552
218542699360,1cyclictest0-21swapper/210:35:002
2185421993631,3cyclictest2284022-21sh12:15:000
2185430993533,1cyclictest0-21swapper/308:30:003
2185430993533,1cyclictest0-21swapper/308:30:003
2185430993532,2cyclictest0-21swapper/311:57:003
2185430993532,2cyclictest0-21swapper/311:12:583
218543099350,1cyclictest0-21swapper/309:42:593
2185430993432,1cyclictest0-21swapper/311:36:003
2185430993432,1cyclictest0-21swapper/311:22:593
2185430993432,1cyclictest0-21swapper/311:19:553
2185430993432,1cyclictest0-21swapper/310:20:593
2185430993432,1cyclictest0-21swapper/308:59:593
2185430993432,1cyclictest0-21swapper/308:01:003
2185430993432,1cyclictest0-21swapper/308:01:003
2185430993429,4cyclictest2237365-21turbostat09:49:593
2185426993432,1cyclictest0-21swapper/207:39:592
2185426993431,2cyclictest0-21swapper/212:07:592
2185426993430,2cyclictest0-21swapper/212:22:592
2185426993430,2cyclictest0-21swapper/210:51:002
2185426993430,2cyclictest0-21swapper/209:24:562
2185421993430,3cyclictest2186888-21kworker/u8:1+events_unbound07:37:590
2185421993430,2cyclictest2289287-21grep12:30:010
2185430993331,1cyclictest0-21swapper/311:44:553
2185430993331,1cyclictest0-21swapper/307:39:593
2185426993331,1cyclictest0-21swapper/210:14:592
2185426993329,2cyclictest0-21swapper/207:16:592
2185421993329,3cyclictest2182342-21kworker/u8:2+events_unbound07:31:230
2185430993230,1cyclictest0-21swapper/312:07:593
2185426993229,2cyclictest0-21swapper/210:44:582
2185430993129,1cyclictest0-21swapper/310:14:593
2185430993129,1cyclictest0-21swapper/309:24:553
2185430993128,1cyclictest0-21swapper/310:50:593
2185430993125,4cyclictest2253524-21turbostat10:40:003
2185426993128,2cyclictest0-21swapper/209:31:582
218542699310,29cyclictest0-21swapper/208:30:122
4577091300,8ptp4l61490irq/134-eno1-TxRx-007:20:003
2185430993028,1cyclictest0-21swapper/312:22:593
2185430993025,4cyclictest2194904-21turbostat07:44:563
218543099300,29cyclictest0-21swapper/308:15:023
218543099300,28cyclictest0-21swapper/310:40:133
218543099300,28cyclictest0-21swapper/310:25:133
218543099300,28cyclictest0-21swapper/309:55:113
2185426993027,2cyclictest0-21swapper/209:17:592
2185426993027,2cyclictest0-21swapper/209:17:582
2185426993026,2cyclictest0-21swapper/207:44:562
218542699300,2cyclictest0-21swapper/211:56:592
218542699300,2cyclictest0-21swapper/210:25:122
218542699300,2cyclictest0-21swapper/210:05:122
218542699300,28cyclictest0-21swapper/208:15:022
218542699300,27cyclictest0-21swapper/209:40:142
4577091290,7ptp4l441ktimers/308:40:003
2185430992926,2cyclictest0-21swapper/311:30:113
218543099290,28cyclictest0-21swapper/309:12:593
218543099290,27cyclictest0-21swapper/311:00:123
218543099290,27cyclictest0-21swapper/308:30:123
218543099290,27cyclictest0-21swapper/307:20:133
218543099290,26cyclictest0-21swapper/309:05:153
2185426992926,2cyclictest0-21swapper/209:11:002
2185426992925,2cyclictest0-21swapper/207:10:592
218542699290,2cyclictest0-21swapper/211:00:112
218542699290,27cyclictest0-21swapper/211:30:022
218542699290,27cyclictest0-21swapper/211:27:582
218542699290,27cyclictest0-21swapper/210:35:132
218542699290,27cyclictest0-21swapper/209:55:122
218542699290,27cyclictest0-21swapper/209:05:162
218542699290,27cyclictest0-21swapper/208:45:122
218542699290,27cyclictest0-21swapper/208:40:582
218542699290,27cyclictest0-21swapper/208:20:132
218542699290,27cyclictest0-21swapper/207:20:132
4577091280,7ptp4l61490irq/134-eno1-TxRx-010:05:003
4577091280,7ptp4l61490irq/134-eno1-TxRx-009:05:003
4577091280,7ptp4l61490irq/134-eno1-TxRx-008:45:013
4577091280,7ptp4l61490irq/134-eno1-TxRx-008:10:013
4577091280,6ptp4l441ktimers/312:34:563
4577091280,6ptp4l441ktimers/311:49:553
4577091280,6ptp4l441ktimers/308:00:013
4577091280,6ptp4l441ktimers/307:54:553
4577091280,6ptp4l441ktimers/307:30:013
2185430992826,1cyclictest0-21swapper/312:16:593
2185430992826,1cyclictest0-21swapper/309:17:593
2185430992826,1cyclictest0-21swapper/309:17:593
2185430992826,1cyclictest0-21swapper/308:45:133
218543099280,27cyclictest0-21swapper/310:05:133
218543099280,1cyclictest0-21swapper/308:20:123
218543099280,1cyclictest0-21swapper/307:12:593
2185426992824,2cyclictest0-21swapper/212:28:592
2185426992824,2cyclictest0-21swapper/207:26:592
218542699280,1cyclictest0-21swapper/210:59:582
4577091270,7ptp4l61490irq/134-eno1-TxRx-012:15:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-011:00:013
4577091270,6ptp4l441ktimers/312:29:563
4577091270,5ptp4l61490irq/134-eno1-TxRx-009:30:003
4577091270,5ptp4l441ktimers/309:39:563
4577091270,5ptp4l441ktimers/307:50:013
2185430992726,1cyclictest0-21swapper/311:25:593
218543099270,25cyclictest0-21swapper/307:34:003
218543099270,19cyclictest0-21swapper/310:45:143
218542699270,2cyclictest0-21swapper/208:29:562
218542699270,2cyclictest0-21swapper/208:29:552
218542699270,25cyclictest0-21swapper/207:30:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-008:15:013
4577091260,6ptp4l441ktimers/312:40:003
218543099260,24cyclictest0-21swapper/311:08:593
2185426992622,2cyclictest0-21swapper/211:06:002
2185426992622,2cyclictest0-21swapper/209:36:592
218542699260,24cyclictest0-21swapper/212:35:592
231999250,13rtkit-daemon2184014-21apt-get07:05:120
2185430992523,1cyclictest0-21swapper/311:50:143
2185426992522,2cyclictest0-21swapper/212:30:592
2185426992522,2cyclictest0-21swapper/211:48:592
2185426992522,2cyclictest0-21swapper/207:50:002
2185426992521,2cyclictest0-21swapper/208:08:592
4577091240,4ptp4l441ktimers/310:19:553
2185426992422,1cyclictest0-21swapper/208:39:592
218542699240,1cyclictest0-21swapper/209:29:592
2185426992220,1cyclictest0-21swapper/207:55:002
2185426992118,2cyclictest0-21swapper/212:15:122
2185426992117,2cyclictest0-21swapper/212:10:592
2185426992017,2cyclictest0-21swapper/208:12:582
2185426991915,2cyclictest0-21swapper/210:15:592
218542499181,16cyclictest2185294-21latency_hist07:10:021
2185426991512,2cyclictest0-21swapper/210:03:582
2185426991411,2cyclictest0-21swapper/210:45:582
2185426991411,2cyclictest0-21swapper/207:57:582
2185426991310,2cyclictest0-21swapper/211:50:592
21854269996,2cyclictest0-21swapper/209:04:432
21854269930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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