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2026-07-16 - 16:16
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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 Thu Jul 16, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
269952399153142,7cyclictest2750941-21latency_hist09:50:011
269952399131122,7cyclictest2761806-21kworker/u8:1+events_unbound10:30:001
269952399129122,5cyclictest2738206-21kworker/u8:1+flush-179:009:14:591
269952399122116,4cyclictest2697862-21kworker/u8:2+events_unbound07:10:251
269952399121116,3cyclictest2697862-21kworker/u8:2+flush-179:007:20:251
269952399116110,4cyclictest2786254-21kworker/u8:1+events_unbound12:10:261
269952199115106,6cyclictest2718852-21latency_hist08:10:010
269952399114106,5cyclictest2766822-21kworker/u8:2+flush-179:010:40:201
269952399113104,6cyclictest2799243-21kworker/u8:2+flush-179:012:20:181
269952399112102,7cyclictest2726789-21kworker/u8:0+events_unbound09:05:201
269952399110104,4cyclictest2722081-21kworker/u8:3+flush-179:008:40:251
269952399110101,6cyclictest2738206-21kworker/u8:1+flush-179:009:20:031
269952399110100,8cyclictest2708265-21kworker/u8:0+flush-179:007:40:251
269952399109100,6cyclictest2777671-21kworker/u8:2+flush-179:011:15:191
26995239910899,5cyclictest2775057-21kworker/u8:1+flush-179:011:10:251
26995239910796,8cyclictest2758892-21latency_hist10:15:011
269952399105100,3cyclictest2803749-21kworker/u8:3+flush-179:012:35:251
26995239910495,7cyclictest2752501-21kworker/u8:0+flush-179:010:15:211
26995239910495,6cyclictest2766822-21kworker/u8:2+flush-179:010:55:251
26995219910498,4cyclictest2705809-21kworker/u8:3+flush-179:007:40:000
26995219910494,6cyclictest2752501-21kworker/u8:0+flush-179:010:05:160
26995219910488,14cyclictest2725473-21apt-get08:30:110
26995239910395,5cyclictest2794147-21kworker/u8:0+events_unbound12:05:151
26995239910296,4cyclictest2783065-21kworker/u8:3+events_unbound11:45:241
26995239910296,4cyclictest2766822-21kworker/u8:2+flush-179:010:50:241
26995239910296,4cyclictest2766822-21kworker/u8:2+flush-179:010:50:231
26995239910295,5cyclictest2726789-21kworker/u8:0+flush-179:008:50:241
26995219910292,8cyclictest2733423-21apt-get08:55:120
26995239910194,5cyclictest2752501-21kworker/u8:0+events_unbound10:00:251
26995239910192,7cyclictest2705809-21kworker/u8:3+events_unbound08:00:011
26995239910192,6cyclictest2786254-21kworker/u8:1+flush-179:012:15:141
26995219910087,9cyclictest2761806-21kworker/u8:1+flush-179:010:35:160
2699523999991,6cyclictest2723632-21latency_hist08:25:021
2699523999991,6cyclictest2723632-21latency_hist08:25:011
2699523999991,5cyclictest2728450-21kworker/u8:2+flush-179:008:45:221
2699523999990,6cyclictest2735318-21kworker/u8:2+events_unbound09:25:191
2699523999892,4cyclictest2786254-21kworker/u8:1+flush-179:011:55:201
2699523999892,4cyclictest2783065-21kworker/u8:3+flush-179:012:00:241
2699523999890,6cyclictest2744612-21kworker/u8:0+flush-179:009:35:161
2699523999790,5cyclictest2705809-21kworker/u8:3+flush-179:007:35:181
2699523999789,6cyclictest2752501-21kworker/u8:0+flush-179:009:55:011
2699521999787,6cyclictest2744612-21kworker/u8:0+flush-179:009:35:170
2699523999584,8cyclictest1213033-21systemd-journal08:35:001
2699523999488,4cyclictest2763649-21kworker/u8:0+flush-179:010:30:111
2699523999485,7cyclictest2762087-21latency_hist10:25:021
2699521999484,7cyclictest2742967-21kworker/u8:3+flush-179:009:30:210
2699523999385,6cyclictest2735318-21kworker/u8:2+events_unbound09:40:261
2699523999286,5cyclictest2697862-21kworker/u8:2+events_unbound07:25:241
2699521999284,5cyclictest2735318-21kworker/u8:2+flush-179:009:20:160
2699523999182,6cyclictest2786254-21kworker/u8:1+events_unbound12:25:191
2699521999177,11cyclictest1213033-21systemd-journal11:55:000
2699521998980,6cyclictest2775077-21latency_hist11:05:010
2699521998882,4cyclictest2697862-21kworker/u8:2+flush-179:007:45:250
2699521998876,9cyclictest2768453-21latency_hist10:45:020
2699523998782,4cyclictest2803203-21kworker/u8:0+events_unbound12:30:231
2699523998680,4cyclictest2777671-21kworker/u8:2+flush-179:011:20:221
2699523998680,4cyclictest2738206-21kworker/u8:1+events_unbound09:15:191
2699523998680,4cyclictest1547091-21kworker/u8:1+events_unbound07:15:151
2699523998679,5cyclictest2722081-21kworker/u8:3+flush-179:008:25:151
2699521998677,7cyclictest2717301-21kworker/u8:1+flush-179:008:10:220
2699523998580,4cyclictest2783065-21kworker/u8:3+flush-179:011:44:551
2699521998476,6cyclictest2781421-21kworker/u8:0+flush-179:011:35:000
2699523998377,5cyclictest2735318-21kworker/u8:2+events_unbound09:00:261
2699521998373,7cyclictest1213033-21systemd-journal10:15:000
2699523998275,5cyclictest2775057-21kworker/u8:1+flush-179:011:05:191
2699523998274,5cyclictest2789648-21apt-get11:50:111
2699521998272,5cyclictest2766822-21kworker/u8:2+events_unbound10:45:230
2699521998270,9cyclictest2726789-21kworker/u8:0+flush-179:008:50:210
2699521998270,8cyclictest1547091-21kworker/u8:1+flush-179:007:15:210
2699523998175,4cyclictest2768433-21kworker/u8:0+flush-179:011:00:211
2699523998165,12cyclictest1213033-21systemd-journal11:40:011
2699521998168,9cyclictest2748532-21kworker/u8:1+flush-179:009:55:200
2699521998168,9cyclictest2748532-21kworker/u8:1+flush-179:009:55:190
2699523998070,6cyclictest2697862-21kworker/u8:2+events_unbound07:30:191
2699521998073,5cyclictest2786254-21kworker/u8:1+flush-179:012:20:140
2699521998073,5cyclictest2726789-21kworker/u8:0+flush-179:008:40:220
2699523997872,4cyclictest2777671-21kworker/u8:2+flush-179:011:30:221
2699523997870,6cyclictest2768433-21kworker/u8:0+events_unbound10:45:191
2699521997875,2cyclictest2794147-21kworker/u8:0+flush-179:012:05:230
2699521997868,7cyclictest2777671-21kworker/u8:2+flush-179:011:20:200
2699521997867,9cyclictest2802433-21apt-get12:30:110
2699523997772,4cyclictest2752501-21kworker/u8:0+events_unbound10:05:241
2699521997770,5cyclictest1-21systemd08:49:590
2699528997568,5cyclictest2749371-21turbostat09:45:013
2699523997567,5cyclictest2777671-21kworker/u8:2+flush-179:011:25:151
2699521997571,3cyclictest2705809-21kworker/u8:3+flush-179:008:00:260
2699523997469,3cyclictest2705809-21kworker/u8:3+events_unbound07:50:221
2699521997463,8cyclictest2708265-21kworker/u8:0+events_unbound07:40:190
2699523997264,5cyclictest2708265-21kworker/u8:0+events_unbound07:45:201
2699521997265,5cyclictest2755757-21kworker/u8:3+flush-179:010:25:250
2699521997163,6cyclictest2748532-21kworker/u8:1+flush-179:009:50:230
2699521997163,6cyclictest2697862-21kworker/u8:2+events_unbound07:25:180
2699521997162,6cyclictest2697862-21kworker/u8:2+events_unbound07:20:220
2699521997161,7cyclictest2735318-21kworker/u8:2+events_unbound09:00:230
2699521997158,10cyclictest1213033-21systemd-journal07:35:010
2699521997068,1cyclictest2777671-21kworker/u8:2+events_unbound11:15:240
2699521997065,3cyclictest2786254-21kworker/u8:1+flush-179:012:25:250
2699521997062,5cyclictest2735318-21kworker/u8:2+flush-179:009:40:230
2699521996958,5cyclictest2766822-21kworker/u8:2+flush-179:010:50:160
2699521996958,5cyclictest2766822-21kworker/u8:2+flush-179:010:50:150
2699523996862,4cyclictest2705809-21kworker/u8:3+events_unbound08:00:151
2699523996858,7cyclictest2699378-21latency_hist07:10:021
2699521996861,5cyclictest2714069-21latency_hist07:55:010
269952899660,64cyclictest0-21swapper/311:10:583
2699523996650,7cyclictest2720416-21kworker/u8:2+flush-179:008:14:591
2699521996662,3cyclictest2722081-21kworker/u8:3+flush-179:008:24:300
2699521996662,3cyclictest2722081-21kworker/u8:3+flush-179:008:24:300
2699521996660,4cyclictest2783065-21kworker/u8:3+flush-179:012:00:220
2699521996660,4cyclictest2726789-21kworker/u8:0+events_unbound09:10:250
2699521996653,8cyclictest2783065-21kworker/u8:3+events_unbound11:45:200
2699521996559,4cyclictest2738206-21kworker/u8:1+flush-179:009:15:160
2699521996559,4cyclictest2720693-21apt-get08:15:120
2699521996558,5cyclictest2752501-21kworker/u8:0+flush-179:010:20:220
2699521996556,7cyclictest2787807-21latency_hist11:45:020
2699523996460,3cyclictest2726789-21kworker/u8:0+flush-179:008:59:541
2699523996458,5cyclictest2752501-21kworker/u8:0+flush-179:009:55:251
2699523996458,5cyclictest2752501-21kworker/u8:0+flush-179:009:55:251
2699521996458,4cyclictest2766822-21kworker/u8:2+flush-179:010:55:130
2699521996458,4cyclictest2697862-21kworker/u8:2+flush-179:008:00:010
2699528996260,1cyclictest0-21swapper/312:28:593
2699523996257,4cyclictest2761806-21kworker/u8:1+flush-179:010:35:291
2699521996257,4cyclictest2722081-21kworker/u8:3+flush-179:008:25:210
2699521996154,5cyclictest2722081-21kworker/u8:3+flush-179:008:40:010
2699523996055,4cyclictest2697862-21kworker/u8:2+flush-179:008:05:291
2699521996053,5cyclictest2783065-21kworker/u8:3+flush-179:011:40:010
2699523995955,3cyclictest2722081-21kworker/u8:3+events_unbound08:35:251
2699521995955,2cyclictest2775057-21kworker/u8:1+flush-179:011:10:160
2699521995953,4cyclictest2697862-21kworker/u8:2+events_unbound07:10:150
2699523995853,3cyclictest2742967-21kworker/u8:3+events_unbound09:30:141
2699521995850,5cyclictest2760484-21latency_hist10:20:010
2699523995747,7cyclictest2722036-21latency_hist08:20:011
2699521995753,3cyclictest2726789-21kworker/u8:0+flush-179:009:05:220
2699521995751,4cyclictest2781421-21kworker/u8:0+events_unbound11:25:140
2699521995648,6cyclictest2786254-21kworker/u8:1+flush-179:012:15:110
2699521995648,5cyclictest2735318-21kworker/u8:2+events_unbound09:45:220
2699521995548,5cyclictest2786254-21kworker/u8:1+events_unbound12:10:160
2699521995447,6cyclictest2803749-21kworker/u8:3+events_unbound12:35:260
2699521995447,5cyclictest2786254-21kworker/u8:1+flush-179:012:00:010
2699521995146,4cyclictest2775057-21kworker/u8:1+flush-179:011:05:190
2699521995146,4cyclictest2761806-21kworker/u8:1+flush-179:010:30:190
4577091480,13ptp4l441ktimers/307:10:013
2699528994632,12cyclictest2771885-21turbostat10:55:013
2699528994632,12cyclictest2771885-21turbostat10:55:003
2699521994641,4cyclictest2752501-21kworker/u8:0+events_unbound10:00:140
2699521994641,4cyclictest2735318-21kworker/u8:2+flush-179:009:25:220
269952899440,42cyclictest2704198-21turbostat07:25:003
2699525994340,2cyclictest0-21swapper/211:50:592
2699528994232,8cyclictest2709298-21turbostat07:40:003
2699528994134,5cyclictest2781446-21turbostat11:25:003
269952899410,39cyclictest2795830-21turbostat12:10:013
269952899410,39cyclictest2747761-21turbostat09:40:003
2699528994034,5cyclictest2746175-21turbostat09:35:003
2699528994034,4cyclictest2707375-21turbostat07:35:013
269952899400,38cyclictest2714090-21turbostat07:55:013
2699528993933,5cyclictest2718872-21turbostat08:10:003
269952899390,4cyclictest2752529-21turbostat09:55:003
269952899390,4cyclictest2728418-21turbostat08:40:003
269952899390,38cyclictest2717274-21turbostat08:04:593
2699525993936,2cyclictest0-21swapper/211:37:592
2699525993935,2cyclictest0-21swapper/207:33:002
269952599390,36cyclictest0-21swapper/212:12:592
2699528993833,4cyclictest2800599-21turbostat12:25:003
269952899380,3cyclictest2712490-21turbostat07:50:003
2699525993835,2cyclictest0-21swapper/211:05:592
269952599380,36cyclictest0-21swapper/211:18:592
269952599380,35cyclictest0-21swapper/208:24:562
269952599380,35cyclictest0-21swapper/208:24:552
2699528993735,1cyclictest0-21swapper/312:00:003
2699528993730,5cyclictest2792610-21turbostat12:04:553
2699525993734,2cyclictest0-21swapper/210:35:002
2699525993734,2cyclictest0-21swapper/207:44:552
269952599370,35cyclictest0-21swapper/207:39:592
269952599370,2cyclictest0-21swapper/207:54:592
2699528993634,1cyclictest0-21swapper/312:13:593
2699528993634,1cyclictest0-21swapper/310:30:003
2699528993634,1cyclictest0-21swapper/308:54:553
269952899360,35cyclictest0-21swapper/308:59:553
269952899360,35cyclictest0-21swapper/308:18:593
2699528993533,1cyclictest0-21swapper/310:11:593
2699528993533,1cyclictest0-21swapper/310:02:593
2699528993529,5cyclictest2789395-21turbostat11:50:003
269952899350,1cyclictest0-21swapper/311:32:593
269952899350,1cyclictest0-21swapper/307:17:593
2699525993531,2cyclictest0-21swapper/208:35:592
2699528993432,1cyclictest0-21swapper/310:49:553
2699528993431,2cyclictest0-21swapper/311:37:593
2699525993431,2cyclictest0-21swapper/212:31:592
2699525993431,2cyclictest0-21swapper/208:30:592
2699525993430,2cyclictest0-21swapper/208:12:592
2699528993331,1cyclictest0-21swapper/312:39:593
2699528993331,1cyclictest0-21swapper/311:08:003
2699525993329,2cyclictest0-21swapper/210:14:002
2699528993230,1cyclictest0-21swapper/307:44:593
2699528993230,1cyclictest0-21swapper/307:10:593
2699528993226,4cyclictest2741148-21turbostat09:19:593
2699525993230,1cyclictest0-21swapper/209:05:012
2699525993229,2cyclictest0-21swapper/207:29:592
2699528993129,1cyclictest0-21swapper/310:40:593
269952899310,30cyclictest0-21swapper/308:29:583
269952899310,29cyclictest0-21swapper/311:25:133
269952899310,24cyclictest0-21swapper/308:30:133
2699525993128,2cyclictest0-21swapper/207:55:592
2699525993027,2cyclictest0-21swapper/210:26:592
2699525993027,2cyclictest0-21swapper/209:30:132
2699525993027,2cyclictest0-21swapper/208:47:002
2699525993027,2cyclictest0-21swapper/207:20:152
269952599300,28cyclictest0-21swapper/212:35:132
269952599300,28cyclictest0-21swapper/211:10:132
2699528992927,1cyclictest0-21swapper/311:50:593
2699528992927,1cyclictest0-21swapper/311:40:143
2699528992927,1cyclictest0-21swapper/310:05:133
2699528992927,1cyclictest0-21swapper/309:12:593
2699528992927,1cyclictest0-21swapper/307:25:133
269952899290,28cyclictest0-21swapper/311:00:123
269952899290,28cyclictest0-21swapper/310:35:133
269952899290,27cyclictest0-21swapper/310:55:123
2699525992926,2cyclictest0-21swapper/211:20:132
2699525992926,2cyclictest0-21swapper/210:38:582
2699525992926,2cyclictest0-21swapper/209:20:012
2699525992926,2cyclictest0-21swapper/207:47:002
269952599290,2cyclictest0-21swapper/208:00:132
269952599290,27cyclictest0-21swapper/212:20:592
269952599290,27cyclictest0-21swapper/212:05:142
269952599290,27cyclictest0-21swapper/211:25:122
269952599290,27cyclictest0-21swapper/210:45:012
269952599290,27cyclictest0-21swapper/210:05:122
269952599290,27cyclictest0-21swapper/208:50:112
269952599290,27cyclictest0-21swapper/207:15:122
269952599290,27cyclictest0-21swapper/207:13:592
269952599290,26cyclictest0-21swapper/209:44:592
269952599290,23cyclictest0-21swapper/208:05:142
4577091280,7ptp4l61490irq/134-eno1-TxRx-012:35:003
4577091280,6ptp4l441ktimers/309:05:003
4577091280,5ptp4l441ktimers/312:20:003
4577091280,5ptp4l441ktimers/309:30:013
269952899280,27cyclictest0-21swapper/309:20:023
269952899280,26cyclictest0-21swapper/311:15:123
269952899280,26cyclictest0-21swapper/309:55:133
269952899280,26cyclictest0-21swapper/309:55:123
2699525992825,2cyclictest0-21swapper/210:15:122
2699525992825,2cyclictest0-21swapper/209:13:592
2699525992824,2cyclictest0-21swapper/211:42:592
269952599280,2cyclictest0-21swapper/210:55:132
269952599280,2cyclictest0-21swapper/210:45:022
269952599280,2cyclictest0-21swapper/210:00:132
2699528992725,1cyclictest0-21swapper/310:24:593
2699528992725,1cyclictest0-21swapper/307:55:153
2699525992725,1cyclictest0-21swapper/210:54:582
2699525992725,1cyclictest0-21swapper/210:54:582
2699525992724,2cyclictest0-21swapper/208:56:592
269952599270,2cyclictest0-21swapper/212:04:002
269952599270,1cyclictest0-21swapper/208:20:002
4577091260,6ptp4l441ktimers/308:15:003
4577091260,5ptp4l61490irq/134-eno1-TxRx-008:49:553
4577091260,5ptp4l441ktimers/310:34:543
4577091260,5ptp4l441ktimers/310:19:553
4577091260,5ptp4l441ktimers/309:09:563
2699528992624,1cyclictest0-21swapper/308:42:593
269952899260,1cyclictest0-21swapper/308:23:593
269952899260,1cyclictest0-21swapper/308:23:593
2699525992623,2cyclictest0-21swapper/211:34:552
269952599260,2cyclictest0-21swapper/209:46:002
269952599260,24cyclictest0-21swapper/212:15:122
269952599260,24cyclictest0-21swapper/209:28:592
2699525992523,1cyclictest0-21swapper/212:30:002
2699525992522,2cyclictest0-21swapper/211:57:592
4577091240,4ptp4l61490irq/134-eno1-TxRx-009:49:553
2699525992421,2cyclictest0-21swapper/208:27:592
2699525992420,2cyclictest0-21swapper/209:56:592
2699525992420,2cyclictest0-21swapper/209:56:582
2699525992219,2cyclictest0-21swapper/210:22:592
269952199222,14cyclictest2699378-21latency_hist07:10:020
2699525992118,2cyclictest0-21swapper/209:19:552
2699525992017,2cyclictest0-21swapper/209:37:582
2699525991816,1cyclictest0-21swapper/208:44:592
2699525991815,2cyclictest0-21swapper/211:46:002
269952599120,2cyclictest0-21swapper/209:10:002
26995259996,2cyclictest0-21swapper/209:52:582
26995259963,2cyclictest0-21swapper/211:00:492
26995259930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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