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2026-08-09 - 01:23
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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 376 highest latencies:
System rackeslot6.osadl.org (updated Sat Aug 08, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
224997499155144,8cyclictest2324191-21latency_hist11:00:011
224997299148135,11cyclictest1213033-21systemd-journal09:30:010
224997499146120,23cyclictest2253091-21latency_hist07:20:011
224997499142130,9cyclictest2264238-21latency_hist07:55:011
224997499140131,6cyclictest2314663-21kworker/u8:0+events_unbound10:50:021
224997299136125,8cyclictest1213033-21systemd-journal10:00:000
224997499129121,6cyclictest2274094-21kworker/u8:3+events_unbound08:35:011
224997499126119,5cyclictest2284124-21kworker/u8:1+flush-179:008:59:591
224997499126118,5cyclictest2259516-21kworker/u8:1+flush-179:007:40:241
224997499124114,6cyclictest2274094-21kworker/u8:3+flush-179:008:35:241
224997499122113,6cyclictest2254714-21kworker/u8:3+events_unbound07:35:001
224997499121105,13cyclictest1213033-21systemd-journal08:15:001
224997499120113,5cyclictest2245339-21kworker/u8:1+flush-179:007:10:241
224997499119109,7cyclictest2325773-21latency_hist11:05:011
224997499118111,4cyclictest2277225-21kworker/u8:0+events_unbound09:00:151
224997499118108,7cyclictest2290219-21latency_hist09:15:011
224997499118107,8cyclictest1213033-21systemd-journal08:20:011
224997499117106,8cyclictest2262654-21latency_hist07:50:011
224997299116106,7cyclictest2349892-21latency_hist12:20:010
224997299116106,7cyclictest2349892-21latency_hist12:20:010
224997299116104,9cyclictest2336905-21latency_hist11:40:010
224997499115107,5cyclictest2293099-21kworker/u8:1+flush-179:009:25:181
224997499115106,5cyclictest2251921-21kworker/u8:0+flush-179:007:35:211
224997499114107,5cyclictest2309880-21kworker/u8:1+events_unbound10:25:261
224997499114106,5cyclictest2274094-21kworker/u8:3+events_unbound08:40:131
224997499114106,5cyclictest2274094-21kworker/u8:3+events_unbound08:40:131
22499749911198,10cyclictest2308438-21cat10:10:011
224997499109103,4cyclictest2264228-21kworker/u8:1+flush-179:008:05:161
224997499109101,5cyclictest2317368-21kworker/u8:1+flush-179:010:40:231
22499729910997,9cyclictest2286798-21apt-get09:04:590
224997299109100,6cyclictest2322558-21kworker/u8:3+flush-179:011:10:140
224997499108102,5cyclictest2330511-21kworker/u8:1+flush-179:011:30:291
224997499108101,5cyclictest2330511-21kworker/u8:1+flush-179:011:25:161
224997499108100,6cyclictest2301404-21kworker/u8:3+flush-179:010:05:001
22499749910797,8cyclictest2330807-21apt-get11:20:141
22499749910793,10cyclictest2333757-21kworker/u8:2+flush-179:012:10:201
22499749910494,7cyclictest2300319-21kworker/u8:1+flush-179:009:45:231
22499749910394,7cyclictest2309880-21kworker/u8:1+events_unbound10:20:001
22499749910386,7cyclictest2280461-21kworker/u8:2+events_unbound08:55:001
22499749910297,3cyclictest2314663-21kworker/u8:0+flush-179:010:50:251
22499749910093,5cyclictest2290252-21kworker/u8:0+flush-179:009:20:221
22499749910090,7cyclictest2306444-21kworker/u8:2+flush-179:010:35:251
2249974999992,5cyclictest2348034-21kworker/u8:0+events_unbound12:25:001
2249972999989,7cyclictest2272462-21latency_hist08:20:010
2249972999890,6cyclictest2350165-21apt-get12:20:140
2249974999690,4cyclictest2341677-21latency_hist11:55:021
2249974999690,4cyclictest2296564-21kworker/u8:0+flush-179:009:40:231
2249972999688,6cyclictest2299784-21latency_hist09:45:010
2249972999686,7cyclictest2346458-21latency_hist12:10:010
2249974999381,9cyclictest510-21rs:main1
2249972999381,9cyclictest2314663-21kworker/u8:0+flush-179:010:50:220
2249972999282,7cyclictest2341145-21kworker/u8:3+events_unbound12:00:010
2249974999182,7cyclictest2249868-21latency_hist07:10:031
2249974999181,7cyclictest2293099-21kworker/u8:1+flush-179:009:30:271
2249974998983,4cyclictest2327958-21kworker/u8:0+flush-179:011:15:271
2249974998982,4cyclictest2306444-21kworker/u8:2+flush-179:010:30:221
2249974998978,8cyclictest1213033-21systemd-journal08:00:011
2249974998978,4cyclictest2279500-21kworker/u8:1+events_unbound08:50:001
2249974998881,5cyclictest2265816-21kworker/u8:0+flush-179:008:00:171
2249974998878,7cyclictest2333757-21kworker/u8:2+flush-179:011:35:201
2249972998881,5cyclictest2259516-21kworker/u8:1+events_unbound07:40:000
2249974998781,4cyclictest2348034-21kworker/u8:0+flush-179:012:30:241
2249974998780,5cyclictest2309880-21kworker/u8:1+flush-179:010:20:161
2249974998772,11cyclictest1213033-21systemd-journal12:15:021
2249974998772,11cyclictest1213033-21systemd-journal12:15:011
2249974998771,6cyclictest2264228-21kworker/u8:1+events_unbound08:25:001
2249974998680,4cyclictest2288609-21kworker/u8:2+events_unbound09:20:001
2249974998679,5cyclictest2330511-21kworker/u8:1+flush-179:012:00:171
2249974998673,11cyclictest2264228-21kworker/u8:1+flush-179:008:25:251
2249974998477,5cyclictest2251921-21kworker/u8:0+flush-179:007:20:171
2249972998475,7cyclictest2277225-21kworker/u8:0+flush-179:009:05:250
2249974998375,5cyclictest2296564-21kworker/u8:0+events_unbound09:55:151
2249974998373,8cyclictest2293099-21kworker/u8:1+flush-179:009:35:261
2249974998373,7cyclictest2245339-21kworker/u8:1+flush-179:007:25:151
2249972998372,8cyclictest2330511-21kworker/u8:1+flush-179:011:30:260
2249974998172,7cyclictest2353083-21latency_hist12:30:001
2249972998173,6cyclictest1213033-21systemd-journal09:11:380
2249974998069,8cyclictest2345127-21apt-get12:05:131
2249972997968,9cyclictest2280682-21apt-get08:45:120
2249972997872,5cyclictest2277225-21kworker/u8:0+flush-179:008:55:260
2249972997868,7cyclictest2302955-21latency_hist09:55:010
2249974997768,6cyclictest2301404-21kworker/u8:3+flush-179:010:05:211
2249972997767,7cyclictest2351531-21kworker/u8:3+flush-179:012:35:170
2249974997671,3cyclictest2348034-21kworker/u8:0+flush-179:012:35:241
2249972997660,12cyclictest2336887-21kworker/u8:0+flush-179:011:40:160
2249974997568,4cyclictest2288637-21latency_hist09:10:011
2249974997366,5cyclictest2322555-21kworker/u8:1+flush-179:011:05:241
2249972997060,8cyclictest2251921-21kworker/u8:0+flush-179:007:25:000
2249972996963,4cyclictest2265816-21kworker/u8:0+events_unbound08:00:150
2249972996959,8cyclictest2264228-21kworker/u8:1+flush-179:007:55:220
2249972996757,8cyclictest2306444-21kworker/u8:2+flush-179:010:30:250
2249972996756,9cyclictest2329198-21apt-get11:15:120
2249972996661,4cyclictest2348034-21kworker/u8:0+flush-179:012:25:240
2249972996659,5cyclictest2309880-21kworker/u8:1+flush-179:010:20:240
2249972996656,8cyclictest2330511-21kworker/u8:1+events_unbound11:45:230
2249972996654,9cyclictest2274094-21kworker/u8:3+events_unbound08:40:230
2249972996654,9cyclictest2274094-21kworker/u8:3+events_unbound08:40:230
2249972996556,6cyclictest2277225-21kworker/u8:0+events_unbound08:40:010
2249972996551,11cyclictest2308011-21apt-get10:09:590
2249972996457,6cyclictest2330511-21kworker/u8:1+flush-179:012:00:250
2249972996452,9cyclictest2251921-21kworker/u8:0+events_unbound07:50:230
224997299641,61cyclictest1-21systemd11:20:390
2249978996359,3cyclictest0-21swapper/211:02:592
2249972996354,7cyclictest2272435-21kworker/u8:2+events_unbound08:30:000
2249972996350,10cyclictest1213033-21systemd-journal08:10:000
2249974996255,5cyclictest2330511-21kworker/u8:1+flush-179:011:45:221
2249972996255,5cyclictest2293099-21kworker/u8:1+flush-179:009:30:260
2249978996157,3cyclictest0-21swapper/210:35:592
2249972996154,6cyclictest2251738-21apt-get07:15:130
2249982996057,1cyclictest0-21swapper/311:03:003
2249974996051,7cyclictest2341931-21apt-get11:55:131
2249972996049,9cyclictest2319660-21apt-get10:45:140
2249972995951,6cyclictest2317368-21kworker/u8:1+events_unbound10:45:000
2249972995950,7cyclictest2332375-21/usr/sbin/munin11:25:180
2249972995950,6cyclictest2264228-21kworker/u8:1+events_unbound08:10:230
2249972995748,7cyclictest2280461-21kworker/u8:2+flush-179:008:50:160
2249972995746,8cyclictest1213033-21systemd-journal11:06:380
2249972995650,5cyclictest2348034-21kworker/u8:0+flush-179:012:30:220
2249972995649,6cyclictest2316468-21apt-get10:35:140
2249982995553,1cyclictest0-21swapper/310:35:593
2249972995549,5cyclictest2306444-21kworker/u8:2+flush-179:010:15:270
2249974995449,4cyclictest2296564-21kworker/u8:0+flush-179:009:50:201
2249972995438,14cyclictest2322555-21kworker/u8:1+flush-179:010:55:160
2249972995345,6cyclictest1213033-21systemd-journal09:16:380
2249972995344,7cyclictest2251921-21kworker/u8:0+flush-179:007:30:160
2249972995246,5cyclictest2288609-21kworker/u8:2+flush-179:009:25:000
2249972995243,7cyclictest2322558-21kworker/u8:3+flush-179:011:05:010
2249972995146,4cyclictest2265816-21kworker/u8:0+events_unbound08:20:240
2249974995045,4cyclictest2327958-21kworker/u8:0+flush-179:011:10:261
4577091470,13ptp4l61490irq/134-eno1-TxRx-007:10:003
2249972994738,7cyclictest2293099-21kworker/u8:1+flush-179:009:35:160
2249972994536,7cyclictest2300039-21apt-get09:45:110
224998299430,42cyclictest0-21swapper/310:44:553
224997899430,40cyclictest0-21swapper/210:44:562
2249972994337,4cyclictest2348057-21apt-get12:15:010
2249972994333,8cyclictest2308514-21apt-get10:10:120
2249978994238,2cyclictest0-21swapper/207:32:592
224997899420,40cyclictest0-21swapper/209:12:592
2249972994239,2cyclictest2262651-21cron07:50:010
2249972994131,8cyclictest2296564-21kworker/u8:0+flush-179:010:00:200
224997299411,4cyclictest2341679-21munin-run11:55:010
2249972994035,3cyclictest1213033-21systemd-journal07:44:360
224998299390,31cyclictest2344885-21turbostat12:05:003
2249978993935,2cyclictest0-21swapper/209:17:592
224997899390,36cyclictest0-21swapper/209:44:552
224997899390,36cyclictest0-21swapper/209:09:552
224997899390,29cyclictest0-21swapper/208:19:552
2249978993835,2cyclictest0-21swapper/207:51:002
2249978993834,2cyclictest0-21swapper/212:02:002
224997899380,36cyclictest0-21swapper/211:41:592
2249972993827,10cyclictest2250153-21apt-get07:10:140
2249982993735,1cyclictest0-21swapper/307:33:003
2249982993734,2cyclictest0-21swapper/310:03:003
224998299370,36cyclictest0-21swapper/310:30:003
224998299370,35cyclictest0-21swapper/310:49:003
224998299370,35cyclictest0-21swapper/308:35:593
2249978993734,2cyclictest0-21swapper/209:03:592
224997899370,35cyclictest0-21swapper/210:09:592
224997899370,35cyclictest0-21swapper/207:25:592
224997899370,2cyclictest0-21swapper/208:35:592
2249982993634,1cyclictest0-21swapper/310:09:583
2249982993633,2cyclictest0-21swapper/309:17:593
2249982993633,2cyclictest0-21swapper/307:49:003
224998299360,35cyclictest0-21swapper/309:09:553
2249978993632,2cyclictest0-21swapper/207:24:002
224997899360,1cyclictest0-21swapper/210:48:592
224997899360,1cyclictest0-21swapper/210:29:592
2249982993533,1cyclictest0-21swapper/310:18:003
2249982993533,1cyclictest0-21swapper/309:34:553
2249982993533,1cyclictest0-21swapper/307:50:593
224998299350,34cyclictest0-21swapper/311:14:593
224998299350,34cyclictest0-21swapper/309:44:553
224998299350,34cyclictest0-21swapper/307:25:593
224998299350,1cyclictest0-21swapper/311:24:593
224998299350,1cyclictest0-21swapper/309:51:583
224998299350,1cyclictest0-21swapper/308:24:593
224998299350,1cyclictest0-21swapper/308:19:553
4577091340,6ptp4l61490irq/134-eno1-TxRx-012:20:003
4577091340,6ptp4l61490irq/134-eno1-TxRx-012:20:003
2249982993428,5cyclictest2259474-21turbostat07:40:003
2249978993430,2cyclictest0-21swapper/212:27:592
2249982993331,1cyclictest0-21swapper/309:03:593
2249978993330,2cyclictest0-21swapper/207:12:582
2249978993329,2cyclictest0-21swapper/209:55:582
2249978993230,1cyclictest0-21swapper/207:40:012
2249978993229,2cyclictest0-21swapper/212:34:562
2249978993229,2cyclictest0-21swapper/208:03:592
2249982993129,1cyclictest0-21swapper/307:23:593
2249978993127,2cyclictest0-21swapper/211:22:582
224997899310,29cyclictest0-21swapper/212:15:022
224997899310,29cyclictest0-21swapper/212:15:012
224997899310,28cyclictest0-21swapper/211:30:152
2249982993028,1cyclictest0-21swapper/312:27:583
2249982993028,1cyclictest0-21swapper/307:12:583
2249982993024,5cyclictest2298196-21turbostat09:40:003
2249978993027,2cyclictest0-21swapper/210:00:022
2249972993026,3cyclictest1-21systemd07:29:360
4577091290,6ptp4l441ktimers/312:40:003
2249982992927,1cyclictest0-21swapper/309:55:593
2249982992927,1cyclictest0-21swapper/308:05:013
2249982992926,2cyclictest0-21swapper/311:30:143
224998299290,27cyclictest0-21swapper/312:30:143
224998299290,27cyclictest0-21swapper/308:25:133
224997899290,27cyclictest0-21swapper/212:35:142
224997899290,27cyclictest0-21swapper/210:10:012
224997899290,27cyclictest0-21swapper/209:30:142
224997899290,27cyclictest0-21swapper/208:45:132
224997899290,27cyclictest0-21swapper/208:25:142
224997899290,27cyclictest0-21swapper/208:05:012
2249972992924,4cyclictest2277090-21unixbench-2d08:30:250
224997299291,5cyclictest2314628-21munin-run10:30:000
4577091280,7ptp4l441ktimers/311:50:003
4577091280,6ptp4l441ktimers/310:24:593
2249982992826,1cyclictest0-21swapper/308:03:593
224998299280,27cyclictest0-21swapper/312:15:023
224998299280,26cyclictest0-21swapper/310:10:023
224998299280,25cyclictest0-21swapper/308:12:593
224998299280,21cyclictest0-21swapper/308:45:133
2249978992826,1cyclictest0-21swapper/208:15:002
2249978992824,2cyclictest0-21swapper/208:20:132
224997899280,2cyclictest0-21swapper/212:15:012
224997899280,25cyclictest0-21swapper/208:54:552
4577091270,6ptp4l441ktimers/312:10:003
4577091270,6ptp4l441ktimers/307:45:003
4577091270,6ptp4l441ktimers/307:20:003
4577091270,5ptp4l441ktimers/311:40:013
4577091270,5ptp4l441ktimers/310:34:553
2249982992725,1cyclictest0-21swapper/308:40:593
2249982992725,1cyclictest0-21swapper/308:40:593
2249982992724,2cyclictest0-21swapper/308:34:593
2249978992725,1cyclictest0-21swapper/207:15:142
2249978992724,2cyclictest0-21swapper/209:38:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-011:55:013
4577091260,6ptp4l61490irq/134-eno1-TxRx-009:25:003
4577091260,6ptp4l441ktimers/308:59:563
4577091260,5ptp4l441ktimers/311:29:563
4577091260,5ptp4l441ktimers/311:20:003
2249982992624,1cyclictest0-21swapper/311:44:553
224998299260,25cyclictest0-21swapper/309:26:593
2249978992623,2cyclictest0-21swapper/211:52:582
2249978992623,2cyclictest0-21swapper/210:50:142
2249978992623,2cyclictest0-21swapper/207:55:132
224997899260,2cyclictest0-21swapper/209:26:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-011:59:563
4577091250,5ptp4l441ktimers/310:59:593
4577091250,5ptp4l441ktimers/309:14:563
4577091250,4ptp4l61490irq/134-eno1-TxRx-008:55:003
2249978992522,2cyclictest0-21swapper/212:07:592
2249978992521,2cyclictest0-21swapper/211:05:592
2249978992520,2cyclictest0-21swapper/208:30:592
4577091240,5ptp4l61490irq/134-eno1-TxRx-012:25:013
4577091240,5ptp4l61490irq/134-eno1-TxRx-009:49:553
4577091240,4ptp4l61490irq/134-eno1-TxRx-007:59:563
4577091240,4ptp4l441ktimers/311:10:023
2249978992420,2cyclictest0-21swapper/212:24:552
2249978992319,2cyclictest0-21swapper/210:56:592
2249982992220,1cyclictest0-21swapper/310:50:143
2249978992220,1cyclictest0-21swapper/210:19:592
2249978992218,2cyclictest0-21swapper/211:15:592
2249978992117,2cyclictest0-21swapper/209:48:002
2249978991915,2cyclictest0-21swapper/207:42:592
2249978991815,2cyclictest0-21swapper/208:59:592
2249978991715,1cyclictest0-21swapper/211:39:582
2249978991714,2cyclictest0-21swapper/211:57:582
2249978991713,2cyclictest0-21swapper/211:10:592
2249972991713,3cyclictest0-21swapper/007:10:020
2249978991513,1cyclictest0-21swapper/209:54:592
2249978991513,1cyclictest0-21swapper/207:49:592
2249978991411,2cyclictest0-21swapper/211:49:002
2249978991411,2cyclictest0-21swapper/210:34:002
2249978991411,2cyclictest0-21swapper/208:40:592
2249978991411,2cyclictest0-21swapper/208:40:592
224997899118,2cyclictest0-21swapper/210:21:592
22499789985,2cyclictest0-21swapper/209:22:592
22499789980,7cyclictest0-21swapper/211:30:012
22499789930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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