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2026-04-21 - 22:21
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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 all highest latencies:
System rackeslot6.osadl.org (updated Tue Apr 21, 2026 12:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
235499299112103,7cyclictest2382541-21latency_hist08:35:011
23549929910899,6cyclictest2413038-21latency_hist10:10:011
23549929910394,7cyclictest2457904-21latency_hist12:30:011
23549909910090,7cyclictest2393681-21latency_hist09:10:010
2354990998878,7cyclictest2366646-21latency_hist07:45:010
2354992998476,6cyclictest2388902-21latency_hist08:55:011
2354990998475,7cyclictest2395267-21latency_hist09:15:010
2354990998475,7cyclictest1213033-21systemd-journal08:40:010
2354990998273,7cyclictest2377771-21latency_hist08:20:010
2354992998174,5cyclictest2445175-21latency_hist11:50:001
2354992998172,7cyclictest2435079-21kworker/u8:2+flush-179:012:15:011
2354990997971,5cyclictest2361543-21kworker/u8:1+flush-179:007:35:000
2354997997559,5cyclictest2392110-21turbostat09:05:003
2354997997559,5cyclictest2392110-21turbostat09:05:003
2354992997464,7cyclictest1213033-21systemd-journal08:04:061
2354992997455,17cyclictest2435079-21kworker/u8:2+flush-179:012:05:051
2354992997455,17cyclictest2435079-21kworker/u8:2+flush-179:012:05:051
2354990997466,5cyclictest2448630-21kworker/u8:0+flush-179:012:05:220
2354990997466,5cyclictest2448630-21kworker/u8:0+flush-179:012:05:210
2354992997364,7cyclictest2397117-21/usr/sbin/munin09:20:231
2354990997162,7cyclictest2359920-21latency_hist07:25:000
2354990997162,7cyclictest2359920-21latency_hist07:25:000
2354990997063,5cyclictest2396921-21kworker/u8:2+flush-179:009:34:560
2354990997063,5cyclictest2377743-21kworker/u8:3+flush-179:008:25:250
2354992996961,6cyclictest2368220-21latency_hist07:50:001
2354992996961,6cyclictest2368220-21latency_hist07:50:001
2354990996858,7cyclictest2379367-21latency_hist08:25:010
2354990996757,8cyclictest1213033-21systemd-journal11:20:000
2354990996660,4cyclictest2393716-21kworker/u8:4+flush-179:010:15:010
2354990996655,9cyclictest2373259-21apt-get08:05:110
2354992996559,4cyclictest2406666-21kworker/u8:1+flush-179:010:16:581
2354992996559,4cyclictest2406666-21kworker/u8:1+flush-179:010:16:571
2354992996556,7cyclictest2388937-21kworker/u8:3+flush-179:009:00:001
2354997996462,1cyclictest0-21swapper/308:05:593
2354990996356,5cyclictest2368255-21kworker/u8:2+flush-179:007:55:160
2354992996254,6cyclictest2422646-21latency_hist10:40:021
2354992996254,6cyclictest2361543-21kworker/u8:1+flush-179:007:40:001
2354992996253,7cyclictest2393716-21kworker/u8:4+events_unbound09:30:001
2354992996154,5cyclictest2385989-21apt-get08:45:101
2354992996051,6cyclictest2419444-21kworker/u8:2+flush-179:011:00:001
2354992996050,8cyclictest2405631-21diskstats09:45:151
2354992996050,7cyclictest1213033-21systemd-journal09:19:051
2354990995953,4cyclictest2338441-21kworker/u8:0+flush-179:007:20:000
2354997995851,5cyclictest2416301-21turbostat10:20:013
2354997995851,5cyclictest2416301-21turbostat10:20:003
2354992995855,2cyclictest0-21swapper/107:33:001
2354990995852,4cyclictest2384182-21kworker/u8:0+flush-179:008:45:010
2354990995848,7cyclictest2393716-21kworker/u8:4+flush-179:010:00:210
2354990995847,9cyclictest2429533-21apt-get11:00:110
2354990995652,3cyclictest2440392-21kworker/u8:3+flush-179:012:00:260
2354990995650,4cyclictest2361543-21kworker/u8:1+events_unbound08:10:240
2354990995647,7cyclictest2409911-21kworker/u8:0+flush-179:010:40:240
2354992995547,7cyclictest2361487-21kworker/u8:0+flush-179:007:30:001
2354990995550,4cyclictest2419444-21kworker/u8:2+flush-179:010:54:540
2354990995549,4cyclictest2393716-21kworker/u8:4+flush-179:009:35:160
2354990995548,6cyclictest2409911-21kworker/u8:0+flush-179:010:20:220
2354990995548,5cyclictest2432429-21kworker/u8:3+events_unbound11:10:240
2354990995548,5cyclictest2432429-21kworker/u8:3+events_unbound11:10:230
2354990995547,6cyclictest2449989-21kworker/u8:1+flush-179:012:10:150
2354990995448,4cyclictest2380988-21kworker/u8:1+flush-179:008:30:170
2354990995445,7cyclictest2453174-21kworker/u8:3+flush-179:012:25:220
235499299530,52cyclictest0-21swapper/111:57:591
2354990995347,5cyclictest2368255-21kworker/u8:2+flush-179:008:05:000
2354990995347,4cyclictest2440399-21latency_hist11:35:020
2354990995342,8cyclictest1213033-21systemd-journal11:50:010
2354997995248,2cyclictest0-21swapper/308:00:593
2354996995249,2cyclictest0-21swapper/208:00:592
2354992995247,4cyclictest2454971-21kworker/u8:0+events_unbound12:20:251
2354992995243,7cyclictest2376173-21latency_hist08:15:011
2354992995243,6cyclictest2356468-21latency_hist07:15:011
2354990995248,3cyclictest2459741-21kworker/u8:1+events_unbound12:40:010
2354990995244,6cyclictest1213033-21systemd-journal11:59:050
2354990995243,7cyclictest2389160-21apt-get08:55:120
2354992995146,4cyclictest510-21rs:main1
2354992995146,4cyclictest510-21rs:main1
2354992995144,5cyclictest2380953-21latency_hist08:30:011
2354992995143,6cyclictest2358071-21latency_hist07:20:021
2354992995143,6cyclictest1213033-21systemd-journal11:55:001
2354990995143,5cyclictest2368255-21kworker/u8:2+flush-179:007:50:160
2354990995142,6cyclictest1213033-21systemd-journal07:30:000
2354992995028,19cyclictest2400567-21apt-get09:30:101
2354990995045,4cyclictest2440392-21kworker/u8:3+flush-179:011:40:010
2354990995041,6cyclictest2435079-21kworker/u8:2+events_unbound11:20:220
2354990995039,9cyclictest2416208-21apt-get10:16:570
2354990995039,9cyclictest2416208-21apt-get10:16:560
2354992994944,4cyclictest2406666-21kworker/u8:1+flush-179:010:00:181
2354992994943,5cyclictest2372988-21kworker/u8:3+flush-179:008:05:161
2354992994927,20cyclictest2454730-21latency_hist12:20:001
2354992994926,21cyclictest2358079-21apt-get07:20:031
2354992994926,21cyclictest2358079-21apt-get07:20:031
2354992994842,5cyclictest2409911-21kworker/u8:0+flush-179:010:40:271
2354992994840,6cyclictest2354854-21latency_hist07:10:011
2354992994840,5cyclictest2437465-21/usr/sbin/munin11:25:181
2354992994839,7cyclictest2440639-21/usr/sbin/munin11:35:241
235499299480,7cyclictest2408266-21sh09:55:001
235499299480,45cyclictest0-21swapper/112:00:121
2354990994844,3cyclictest2405126-21systemd-run09:45:010
2354990994837,9cyclictest2431119-21apt-get11:05:120
4577091470,13ptp4l61490irq/134-eno1-TxRx-007:10:003
2354992994741,4cyclictest2403542-21systemd-run09:40:011
2354992994740,5cyclictest1213033-21systemd-journal11:16:051
2354992994739,6cyclictest2432446-21latency_hist11:10:011
2354992994636,8cyclictest2393939-21apt-get09:10:121
2354990994641,4cyclictest2392131-21kworker/u8:1+flush-179:009:15:170
2354992994538,6cyclictest2406666-21kworker/u8:1+flush-179:010:00:001
2354992994536,6cyclictest2384146-21latency_hist08:40:021
235499299450,43cyclictest714-21Xorg10:50:591
235499099450,43cyclictest714-21Xorg07:49:580
235499099450,43cyclictest714-21Xorg07:49:580
235499799440,42cyclictest0-21swapper/312:19:003
235499699440,41cyclictest0-21swapper/212:18:592
2354992994440,3cyclictest2417908-21systemd-run10:25:001
235499299440,27cyclictest0-21swapper/112:30:041
2354990994440,2cyclictest714-21Xorg10:39:590
2354990994435,7cyclictest2393716-21kworker/u8:4+events_unbound09:45:230
235499699430,40cyclictest0-21swapper/208:33:592
2354992994337,4cyclictest2405089-21latency_hist09:45:001
2354990994335,6cyclictest2387317-21latency_hist08:50:010
235499099431,39cyclictest2400347-21munin-run09:30:000
2354997994236,5cyclictest2403494-21turbostat09:40:003
235499699420,39cyclictest0-21swapper/210:45:002
2354992994231,9cyclictest2390767-21apt-get09:00:121
2354992994231,9cyclictest2390767-21apt-get09:00:121
2354992994133,6cyclictest2440392-21kworker/u8:3+events_unbound11:45:011
2354992994133,6cyclictest2440392-21kworker/u8:3+events_unbound11:45:001
2354992994129,10cyclictest2368765-21diskstats07:50:151
2354992994120,18cyclictest2419715-21apt-get10:30:131
2354990994137,2cyclictest2409911-21kworker/u8:0+events_unbound10:25:170
2354990994130,7cyclictest0-21swapper/009:54:590
235499099410,39cyclictest2354862-21turbostat07:14:540
235499799400,38cyclictest2443599-21turbostat11:44:593
235499799400,38cyclictest2443599-21turbostat11:44:593
235499799400,38cyclictest2419470-21turbostat10:30:003
235499799400,32cyclictest2437234-21turbostat11:24:593
235499299400,38cyclictest2430867-21munin-run11:05:011
235499799390,4cyclictest2366650-21turbostat07:45:003
2354996993937,1cyclictest0-21swapper/209:39:592
235499699390,36cyclictest0-21swapper/211:41:002
235499699390,36cyclictest0-21swapper/211:40:592
235499699390,36cyclictest0-21swapper/210:59:582
235499699390,36cyclictest0-21swapper/207:19:552
2354992993928,9cyclictest2424492-21apt-get10:45:101
2354990993936,2cyclictest0-21swapper/012:19:000
2354990993935,2cyclictest2443606-21basename11:44:590
2354990993935,2cyclictest2443606-21basename11:44:590
2354990993930,6cyclictest2435079-21kworker/u8:2+flush-179:011:50:120
2354997993835,2cyclictest0-21swapper/308:59:553
235499799380,37cyclictest0-21swapper/310:43:593
235499799380,36cyclictest0-21swapper/308:50:593
2354996993835,2cyclictest0-21swapper/211:28:592
235499699380,35cyclictest0-21swapper/207:24:552
235499699380,35cyclictest0-21swapper/207:24:552
235499699380,2cyclictest0-21swapper/207:27:002
2354992993826,9cyclictest0-21swapper/112:35:151
2354990993829,7cyclictest2409911-21kworker/u8:0+flush-179:010:05:140
2354997993734,2cyclictest0-21swapper/311:25:593
2354997993734,2cyclictest0-21swapper/309:43:003
2354996993734,2cyclictest0-21swapper/209:43:002
2354996993734,2cyclictest0-21swapper/208:37:592
2354996993734,1cyclictest0-21swapper/212:14:582
235499699370,35cyclictest0-21swapper/208:50:592
2354992993732,3cyclictest2366673-21systemd-run07:45:011
2354990993732,3cyclictest2388937-21kworker/u8:3+flush-179:009:00:090
2354990993732,3cyclictest2388937-21kworker/u8:3+flush-179:009:00:090
2354990993730,4cyclictest2410031-21latency_hist10:00:010
235499099370,36cyclictest0-21swapper/010:59:540
235499799360,35cyclictest0-21swapper/310:59:583
235499799360,2cyclictest0-21swapper/310:02:593
2354996993632,3cyclictest0-21swapper/212:06:002
2354996993632,3cyclictest0-21swapper/212:05:592
235499699360,1cyclictest0-21swapper/209:30:002
2354992993630,4cyclictest281ktimers/111:20:121
2354992993627,7cyclictest2413295-21apt-get10:10:111
2354992993626,8cyclictest2392354-21apt-get09:05:111
2354992993617,17cyclictest0-21swapper/107:55:221
2354990993631,4cyclictest191rcuc/008:50:590
2354997993533,1cyclictest0-21swapper/308:37:593
2354996993532,2cyclictest0-21swapper/208:17:582
2354996993531,2cyclictest0-21swapper/211:09:002
2354996993531,2cyclictest0-21swapper/209:58:002
2354992993532,2cyclictest714-21Xorg08:21:591
2354992993528,5cyclictest2379359-21kworker/u8:2+flush-179:008:40:221
2354990993530,4cyclictest2409911-21kworker/u8:0+flush-179:010:30:140
2354990993530,4cyclictest2361487-21kworker/u8:0+events_unbound07:35:240
2354997993432,1cyclictest0-21swapper/312:14:583
2354997993431,2cyclictest0-21swapper/312:06:003
2354997993431,2cyclictest0-21swapper/312:05:593
2354997993429,4cyclictest2387324-21turbostat08:50:003
2354996993431,2cyclictest0-21swapper/210:17:592
2354996993431,2cyclictest0-21swapper/210:17:592
2354996993429,3cyclictest0-21swapper/210:36:592
2354992993410,22cyclictest2376605-21cpuspeed_turbos08:15:141
2354990993417,14cyclictest2398495-21http09:25:010
2354996993329,2cyclictest0-21swapper/208:27:592
2354990993326,5cyclictest2435079-21kworker/u8:2+events_unbound12:35:000
2354997993230,1cyclictest0-21swapper/309:58:003
2354997993230,1cyclictest0-21swapper/308:17:583
2354997993228,2cyclictest0-21swapper/310:36:583
2354996993228,2cyclictest0-21swapper/211:57:592
235499699320,23cyclictest0-21swapper/212:28:592
2354997993129,1cyclictest0-21swapper/311:09:003
2354996993129,1cyclictest0-21swapper/208:50:002
2354996993128,2cyclictest0-21swapper/208:14:592
235499299311,3cyclictest2440408-21munin-plugin-st11:35:011
2354990993128,2cyclictest0-21swapper/011:25:590
2354997993028,2cyclictest0-21swapper/308:27:593
235499799300,27cyclictest0-21swapper/307:20:133
235499799300,27cyclictest0-21swapper/307:20:123
235499799300,1cyclictest0-21swapper/308:10:123
2354996993027,2cyclictest0-21swapper/210:00:592
2354996993026,3cyclictest0-21swapper/209:06:592
235499699300,28cyclictest0-21swapper/209:45:132
235499699300,28cyclictest0-21swapper/208:40:142
235499699300,27cyclictest0-21swapper/207:45:132
235499699300,27cyclictest0-21swapper/207:45:132
235499299302,5cyclictest714-21Xorg10:28:001
2354990993025,4cyclictest2422686-21kworker/u8:1+flush-179:010:45:060
4577091290,5ptp4l61490irq/134-eno1-TxRx-007:19:553
2354997992927,1cyclictest0-21swapper/311:57:583
2354997992926,2cyclictest0-21swapper/307:45:133
2354997992926,2cyclictest0-21swapper/307:45:133
2354997992925,3cyclictest0-21swapper/309:06:593
235499799290,27cyclictest0-21swapper/309:25:033
235499799290,1cyclictest0-21swapper/312:28:583
235499699290,2cyclictest0-21swapper/211:15:132
235499699290,2cyclictest0-21swapper/210:50:142
235499699290,28cyclictest0-21swapper/207:35:022
235499699290,27cyclictest0-21swapper/210:25:132
235499699290,27cyclictest0-21swapper/207:42:002
235499699290,25cyclictest0-21swapper/210:32:592
235499799280,2cyclictest0-21swapper/309:21:593
235499799280,27cyclictest0-21swapper/311:15:143
235499799280,27cyclictest0-21swapper/310:50:133
235499799280,26cyclictest0-21swapper/309:10:143
235499799280,26cyclictest0-21swapper/308:40:143
2354996992825,2cyclictest0-21swapper/212:03:592
2354996992824,2cyclictest0-21swapper/212:23:002
2354996992824,2cyclictest0-21swapper/209:51:592
2354996992824,2cyclictest0-21swapper/207:11:002
235499699280,2cyclictest0-21swapper/208:55:132
235499699280,24cyclictest0-21swapper/210:48:592
2354990992822,5cyclictest2454971-21kworker/u8:0+flush-179:012:20:160
4577091270,7ptp4l61490irq/134-eno1-TxRx-011:55:003
4577091270,6ptp4l441ktimers/312:35:003
4577091270,6ptp4l441ktimers/311:35:013
2354997992725,1cyclictest0-21swapper/312:03:593
235499799270,26cyclictest0-21swapper/309:45:123
235499799270,1cyclictest0-21swapper/307:54:003
235499799270,1cyclictest0-21swapper/307:35:033
235499799270,1cyclictest0-21swapper/307:11:593
2354996992724,2cyclictest0-21swapper/209:17:592
2354996992723,2cyclictest0-21swapper/211:36:002
235499699270,25cyclictest0-21swapper/207:50:592
235499699270,24cyclictest0-21swapper/209:22:592
235499699270,19cyclictest0-21swapper/209:10:142
235499699270,19cyclictest0-21swapper/208:06:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-011:40:023
4577091260,6ptp4l61490irq/134-eno1-TxRx-010:15:013
4577091260,6ptp4l61490irq/134-eno1-TxRx-008:25:003
4577091260,6ptp4l441ktimers/311:05:013
4577091260,6ptp4l441ktimers/310:35:003
4577091260,6ptp4l441ktimers/309:55:003
4577091260,6ptp4l441ktimers/309:34:593
4577091260,5ptp4l441ktimers/312:40:013
2354997992623,2cyclictest0-21swapper/312:22:593
2354996992623,2cyclictest0-21swapper/211:33:592
2354996992623,2cyclictest0-21swapper/211:10:132
2354996992623,2cyclictest0-21swapper/211:10:122
2354996992623,2cyclictest0-21swapper/210:24:552
4577091250,6ptp4l61490irq/134-eno1-TxRx-007:59:553
4577091250,6ptp4l61490irq/134-eno1-TxRx-007:35:003
2354997992523,1cyclictest0-21swapper/308:32:593
2354997992519,4cyclictest2413043-21turbostat10:09:593
235499799250,1cyclictest0-21swapper/311:11:593
235499799250,1cyclictest0-21swapper/311:11:593
235499799250,18cyclictest0-21swapper/307:29:593
2354996992522,2cyclictest0-21swapper/211:22:002
2354996992522,2cyclictest0-21swapper/208:21:592
235499699250,24cyclictest0-21swapper/212:30:032
4577091240,4ptp4l61490irq/134-eno1-TxRx-010:24:563
4577091240,4ptp4l441ktimers/311:50:013
4577091240,4ptp4l441ktimers/310:50:003
2354997992422,1cyclictest0-21swapper/309:17:593
2354996992422,1cyclictest0-21swapper/209:04:592
2354996992422,1cyclictest0-21swapper/209:04:582
2354996992421,2cyclictest0-21swapper/211:02:582
2354996992421,2cyclictest0-21swapper/210:10:002
2354996992319,2cyclictest0-21swapper/209:31:592
2354996992118,2cyclictest0-21swapper/207:33:582
2354996992016,2cyclictest0-21swapper/211:51:002
2354996991914,2cyclictest0-21swapper/212:36:592
2354996991914,2cyclictest0-21swapper/211:46:582
2354996991815,2cyclictest0-21swapper/207:57:002
2354990991713,3cyclictest0-21swapper/007:10:020
23549969996,2cyclictest0-21swapper/210:10:592
23549969930,2cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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