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2026-08-24 - 01:29
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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 Sun Aug 23, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
101753599145136,6cyclictest1097605-21latency_hist11:20:011
101753499141129,9cyclictest1050884-21kworker/u8:0+flush-179:009:35:160
101753599139130,6cyclictest1038402-21kworker/u8:1+flush-179:008:20:011
101753499138128,7cyclictest1100780-21kworker/u8:3+flush-179:011:40:000
101753499136125,8cyclictest1068690-21latency_hist09:50:010
101753499133123,8cyclictest1084862-21kworker/u8:1+flush-179:011:05:010
101753599132124,6cyclictest1017476-21kworker/u8:3+flush-179:007:15:011
101753499132121,8cyclictest1083017-21latency_hist10:35:010
101753599127120,5cyclictest1025382-21kworker/u8:0+events_unbound07:40:011
101753499126120,4cyclictest1071867-21latency_hist10:00:000
101753499126120,4cyclictest1028087-21kworker/u8:1+flush-179:007:55:000
101753599124113,8cyclictest1100798-21latency_hist11:30:011
101753499124100,21cyclictest1123354-21latency_hist12:40:010
101753499123117,4cyclictest1050884-21kworker/u8:0+events_unbound09:30:250
101753499123116,5cyclictest1075294-21kworker/u8:2+flush-179:010:25:260
101753499123114,6cyclictest1107424-21latency_hist11:50:010
101753599122116,4cyclictest1072577-21kworker/u8:1+flush-179:010:05:221
101753599122114,5cyclictest1084862-21kworker/u8:1+flush-179:010:50:151
101753599121112,6cyclictest1044517-21kworker/u8:1+events_unbound08:50:231
101753499120112,6cyclictest1106074-21kworker/u8:1+events_unbound12:05:010
101753599119111,5cyclictest1022856-21kworker/u8:1+flush-179:007:30:011
101753599119110,6cyclictest1017476-21kworker/u8:3+flush-179:007:45:251
101753499118106,10cyclictest1054113-21apt-get09:05:010
101753499117109,6cyclictest1044517-21kworker/u8:1+events_unbound08:40:010
101753499117109,6cyclictest1044517-21kworker/u8:1+events_unbound08:40:000
101753499117108,6cyclictest1062319-21latency_hist09:30:000
101753599115108,5cyclictest1028087-21kworker/u8:1+flush-179:007:55:231
101753599113105,5cyclictest1072119-21/usr/sbin/munin10:00:221
101753499113106,4cyclictest1072577-21kworker/u8:1+flush-179:010:05:250
101753599112106,4cyclictest1086214-21latency_hist10:45:011
101753599111103,5cyclictest1072577-21kworker/u8:1+events_unbound10:10:141
101753599111102,6cyclictest1017476-21kworker/u8:3+flush-179:007:20:171
101753499111105,4cyclictest1050884-21kworker/u8:0+flush-179:009:05:170
101753499109101,6cyclictest1100780-21kworker/u8:3+events_unbound11:50:200
10175349910892,6cyclictest1113779-21kworker/u8:0+events_unbound12:25:230
101753499108100,5cyclictest1032314-21kworker/u8:0+flush-179:008:10:140
10175359910799,5cyclictest1050884-21kworker/u8:0+flush-179:009:45:161
10175349910695,8cyclictest1041908-21diskstats08:25:130
10175359910597,5cyclictest1093144-21kworker/u8:0+events_unbound11:05:221
10175359910496,5cyclictest1106074-21kworker/u8:1+flush-179:012:05:271
10175359910494,7cyclictest1050884-21kworker/u8:0+events_unbound09:25:141
10175359910491,6cyclictest1100780-21kworker/u8:3+flush-179:011:30:211
10175359910491,6cyclictest1100780-21kworker/u8:3+flush-179:011:30:211
10175349910497,4cyclictest1100780-21kworker/u8:3+flush-179:012:20:160
10175349910494,8cyclictest1120419-21apt-get12:30:130
10175349910493,8cyclictest1073471-21latency_hist10:05:010
10175359910397,4cyclictest1075294-21kworker/u8:2+events_unbound10:20:261
10175359910394,6cyclictest1084862-21kworker/u8:1+flush-179:011:00:221
10175349910290,8cyclictest1084862-21kworker/u8:1+flush-179:010:55:200
10175359910194,4cyclictest1120146-21kworker/u8:1+flush-179:012:30:261
10175359910191,7cyclictest1100780-21kworker/u8:3+flush-179:012:15:171
10175359910191,7cyclictest1100780-21kworker/u8:3+flush-179:012:15:171
10175349910195,4cyclictest1032314-21kworker/u8:0+flush-179:008:00:230
10175349910190,5cyclictest1050884-21kworker/u8:0+events_unbound09:40:130
10175359910093,4cyclictest1050884-21kworker/u8:0+flush-179:009:30:211
10175359910092,5cyclictest1082997-21kworker/u8:2+events_unbound10:35:251
1017535999993,4cyclictest1017476-21kworker/u8:3+flush-179:007:40:151
1017535999988,9cyclictest1072577-21kworker/u8:1+flush-179:010:15:171
1017535999987,10cyclictest1019290-21apt-get07:15:131
1017535999886,6cyclictest1044517-21kworker/u8:1+flush-179:008:55:161
1017534999893,3cyclictest1100780-21kworker/u8:3+flush-179:012:10:210
1017534999789,6cyclictest1100780-21kworker/u8:3+events_unbound12:15:260
1017534999789,6cyclictest1100780-21kworker/u8:3+events_unbound12:15:250
1017535999689,5cyclictest1050884-21kworker/u8:0+events_unbound09:50:241
1017535999689,4cyclictest1046107-21kworker/u8:2+events_unbound08:40:161
1017534999690,4cyclictest1032314-21kworker/u8:0+flush-179:008:15:210
1017534999689,4cyclictest1075294-21kworker/u8:2+events_unbound10:20:150
1017534999588,4cyclictest1100780-21kworker/u8:3+flush-179:011:30:210
1017534999588,4cyclictest1100780-21kworker/u8:3+flush-179:011:30:210
1017535999486,5cyclictest1050884-21kworker/u8:0+flush-179:009:35:211
1017534999386,5cyclictest1100780-21kworker/u8:3+events_unbound11:55:220
1017535999286,4cyclictest1100780-21kworker/u8:3+flush-179:011:40:231
1017535999285,5cyclictest1100780-21kworker/u8:3+events_unbound11:55:141
1017534999285,5cyclictest1046107-21kworker/u8:2+flush-179:008:40:160
1017535999184,4cyclictest1100780-21kworker/u8:3+events_unbound12:35:151
1017535999180,9cyclictest1213033-21systemd-journal10:30:001
1017535999180,8cyclictest1059403-21apt-get09:20:111
1017534999185,4cyclictest1050884-21kworker/u8:0+events_unbound09:10:150
1017534999182,6cyclictest1017476-21kworker/u8:3+events_unbound07:35:190
1017535999082,4cyclictest1022856-21kworker/u8:1+flush-179:007:30:221
1017534999082,6cyclictest1017476-21kworker/u8:3+flush-179:007:25:000
1017534999082,5cyclictest1044517-21kworker/u8:1+flush-179:008:50:150
1017535998982,5cyclictest1039735-21kworker/u8:3+flush-179:008:30:001
1017534998975,4cyclictest1050884-21kworker/u8:0+events_unbound09:20:150
1017535998882,4cyclictest1050884-21kworker/u8:0+events_unbound09:55:191
1017535998881,4cyclictest1050884-21kworker/u8:0+events_unbound09:15:221
1017534998882,4cyclictest1032314-21kworker/u8:0+flush-179:008:20:250
1017534998881,4cyclictest1032314-21kworker/u8:0+flush-179:008:30:160
1017534998879,5cyclictest1106074-21kworker/u8:1+flush-179:012:05:220
1017534998874,6cyclictest1050884-21kworker/u8:0+events_unbound09:50:150
1017535998779,5cyclictest1115379-21latency_hist12:15:001
1017534998782,4cyclictest1050884-21kworker/u8:0+flush-179:009:15:290
1017534998779,6cyclictest1028087-21kworker/u8:1+events_unbound08:10:000
1017534998678,6cyclictest1093144-21kworker/u8:0+flush-179:011:15:240
1017534998676,7cyclictest1091026-21kworker/u8:2+flush-179:011:25:130
1017535998576,7cyclictest1028087-21kworker/u8:1+events_unbound07:50:261
1017534998479,3cyclictest1093144-21kworker/u8:0+flush-179:011:20:140
1017534998478,4cyclictest1091026-21kworker/u8:2+events_unbound11:10:140
1017534998478,4cyclictest1081409-21kworker/u8:0+flush-179:010:45:200
1017534998472,4cyclictest1084862-21kworker/u8:1+flush-179:010:50:240
1017535998380,2cyclictest1028087-21kworker/u8:1+events_unbound08:00:151
1017535998373,7cyclictest1106073-21kworker/u8:0+events_unbound11:45:151
1017534998278,3cyclictest1046107-21kworker/u8:2+flush-179:008:50:010
1017534998276,5cyclictest1017476-21kworker/u8:3+events_unbound07:25:240
1017535998176,2cyclictest1091026-21kworker/u8:2+events_unbound11:35:121
1017535998172,6cyclictest1050884-21kworker/u8:0+events_unbound09:10:221
1017534998169,4cyclictest1075294-21kworker/u8:2+flush-179:010:15:010
1017534998074,5cyclictest1017476-21kworker/u8:3+flush-179:007:15:230
1017534998073,5cyclictest1100780-21kworker/u8:3+events_unbound11:40:150
1017535997868,8cyclictest510-21rs:main1
1017535997864,11cyclictest1081409-21kworker/u8:0+flush-179:010:30:241
1017534997870,6cyclictest1017476-21kworker/u8:3+events_unbound07:45:010
1017534997869,3cyclictest1082997-21kworker/u8:2+flush-179:010:35:230
1017534997867,5cyclictest1084862-21kworker/u8:1+events_unbound11:05:140
1017535997772,4cyclictest1032314-21kworker/u8:0+events_unbound08:35:011
1017535997772,4cyclictest1028087-21kworker/u8:1+flush-179:008:05:241
1017534997770,4cyclictest1017476-21kworker/u8:3+events_unbound07:45:170
1017535997569,4cyclictest1106073-21kworker/u8:0+events_unbound11:50:241
1017535997467,4cyclictest1038402-21kworker/u8:1+flush-179:008:20:161
1017534997467,4cyclictest1028087-21kworker/u8:1+flush-179:007:55:200
1017535997366,5cyclictest1100780-21kworker/u8:3+events_unbound12:00:141
1017535997361,9cyclictest1052771-21apt-get09:00:111
1017535997166,3cyclictest1050884-21kworker/u8:0+flush-179:009:40:181
1017534997163,6cyclictest1017476-21kworker/u8:3+flush-179:007:10:210
1017535996963,5cyclictest1044517-21kworker/u8:1+flush-179:008:35:201
1017535996963,5cyclictest1044517-21kworker/u8:1+flush-179:008:35:201
1017535996959,7cyclictest1094684-21apt-get11:10:121
1017535996654,10cyclictest1032314-21kworker/u8:0+events_unbound08:10:191
1017534996660,5cyclictest1017476-21kworker/u8:3+events_unbound07:35:000
1017535996552,5cyclictest1044517-21kworker/u8:1+events_unbound08:45:151
1017541996361,1cyclictest0-21swapper/309:36:593
1017534996358,3cyclictest1084864-21kworker/u8:3+events_unbound10:40:170
1017535996052,6cyclictest1213033-21systemd-journal12:20:211
1017534995954,4cyclictest1050884-21kworker/u8:0+flush-179:008:55:260
1017535995854,3cyclictest1081409-21kworker/u8:0+events_unbound10:45:231
1017538995754,2cyclictest0-21swapper/211:36:592
1017535995750,5cyclictest1120146-21kworker/u8:1+events_unbound12:30:011
1017535995651,4cyclictest1084862-21kworker/u8:1+events_unbound10:55:231
1017541995552,2cyclictest0-21swapper/311:01:593
4577091510,13ptp4l61490irq/134-eno1-TxRx-007:10:013
1017535994941,7cyclictest1093144-21kworker/u8:0+events_unbound11:20:251
1017538994541,2cyclictest0-21swapper/211:45:592
1017534994130,4cyclictest1072577-21kworker/u8:1+events_unbound10:15:220
1017541993933,5cyclictest1050918-21turbostat08:55:003
101754199390,37cyclictest1027053-21turbostat07:39:593
1017538993936,2cyclictest0-21swapper/212:08:592
101753899390,30cyclictest0-21swapper/211:29:552
1017541993836,1cyclictest0-21swapper/309:52:593
1017541993831,5cyclictest1089403-21sleep10:55:003
101753899380,35cyclictest0-21swapper/207:50:592
1017538993733,2cyclictest0-21swapper/208:14:562
101753899370,2cyclictest0-21swapper/208:15:592
101753899370,1cyclictest0-21swapper/210:45:592
1017541993633,2cyclictest0-21swapper/310:06:593
1017541993633,2cyclictest0-21swapper/310:04:593
101754199360,35cyclictest0-21swapper/312:19:593
101754199360,35cyclictest0-21swapper/312:19:583
101754199360,35cyclictest0-21swapper/311:05:593
101754199360,35cyclictest0-21swapper/310:11:593
101754199360,1cyclictest0-21swapper/308:55:583
1017538993634,1cyclictest0-21swapper/210:00:012
1017538993633,2cyclictest0-21swapper/209:00:592
1017538993633,2cyclictest0-21swapper/208:30:592
1017538993633,2cyclictest0-21swapper/208:28:002
101753899360,1cyclictest0-21swapper/212:19:552
101753899360,1cyclictest0-21swapper/212:19:542
101753899360,1cyclictest0-21swapper/210:59:592
101753899360,1cyclictest0-21swapper/210:14:592
101753899360,1cyclictest0-21swapper/209:10:002
101753899360,1cyclictest0-21swapper/208:35:592
101753899360,1cyclictest0-21swapper/208:35:582
1017534993630,4cyclictest1017419-21latency_hist07:10:020
1017538993532,2cyclictest0-21swapper/212:33:582
1017538993532,2cyclictest0-21swapper/209:37:582
1017538993531,2cyclictest0-21swapper/211:19:552
101753899350,1cyclictest0-21swapper/208:49:592
1017541993432,1cyclictest0-21swapper/312:31:593
1017541993432,1cyclictest0-21swapper/310:19:553
1017541993431,2cyclictest0-21swapper/309:06:593
1017538993431,2cyclictest0-21swapper/208:54:552
1017538993431,2cyclictest0-21swapper/207:40:582
1017538993330,1cyclictest0-21swapper/209:00:002
101753899330,29cyclictest0-21swapper/209:15:152
1017541993231,1cyclictest0-21swapper/312:27:583
1017541993230,1cyclictest0-21swapper/309:05:003
4577091310,7ptp4l441ktimers/310:40:003
4577091310,7ptp4l441ktimers/307:25:003
4577091310,6ptp4l441ktimers/310:35:003
4577091310,6ptp4l441ktimers/307:54:593
1017541993129,1cyclictest0-21swapper/312:13:593
1017541993128,2cyclictest0-21swapper/309:45:143
1017538993127,2cyclictest0-21swapper/210:15:142
4577091300,6ptp4l441ktimers/312:25:003
4577091300,6ptp4l441ktimers/311:45:013
4577091300,6ptp4l441ktimers/311:00:003
1017541993027,2cyclictest0-21swapper/310:42:593
1017541993027,2cyclictest0-21swapper/308:25:113
101754199300,29cyclictest0-21swapper/309:55:133
1017538993028,1cyclictest0-21swapper/210:24:582
1017538993027,2cyclictest0-21swapper/212:37:592
1017538993027,2cyclictest0-21swapper/211:56:592
1017538993027,2cyclictest0-21swapper/210:00:592
1017538993027,2cyclictest0-21swapper/209:14:002
101753899300,2cyclictest0-21swapper/209:28:002
101753899300,29cyclictest0-21swapper/207:35:142
101753899300,28cyclictest0-21swapper/210:50:142
101753899300,28cyclictest0-21swapper/207:18:592
4577091290,7ptp4l441ktimers/308:25:003
4577091290,6ptp4l61490irq/134-eno1-TxRx-011:15:003
4577091290,6ptp4l441ktimers/309:15:003
4577091290,6ptp4l441ktimers/307:50:013
1017541992928,1cyclictest0-21swapper/311:17:593
1017541992927,1cyclictest0-21swapper/310:30:003
1017541992927,1cyclictest0-21swapper/308:40:133
1017541992927,1cyclictest0-21swapper/308:05:153
1017541992926,2cyclictest0-21swapper/312:35:133
101754199290,28cyclictest0-21swapper/311:30:133
101754199290,28cyclictest0-21swapper/311:30:133
101754199290,27cyclictest0-21swapper/307:40:123
101754199290,27cyclictest0-21swapper/307:15:143
1017538992926,2cyclictest0-21swapper/209:40:132
1017538992926,2cyclictest0-21swapper/208:03:582
1017538992926,2cyclictest0-21swapper/207:28:592
101753899290,27cyclictest0-21swapper/211:40:142
101753899290,27cyclictest0-21swapper/210:30:152
101753899290,27cyclictest0-21swapper/209:30:122
101753899290,27cyclictest0-21swapper/207:55:142
4577091280,6ptp4l61490irq/134-eno1-TxRx-009:35:003
4577091280,6ptp4l61490irq/134-eno1-TxRx-007:15:013
4577091280,6ptp4l441ktimers/308:04:563
4577091280,5ptp4l61490irq/134-eno1-TxRx-012:05:013
4577091280,5ptp4l441ktimers/312:00:003
4577091280,5ptp4l441ktimers/311:39:573
4577091280,5ptp4l441ktimers/311:30:013
231999280,17rtkit-daemon1016851-21ntp_192.168.11407:05:231
1017541992826,1cyclictest0-21swapper/307:28:003
1017541992825,2cyclictest0-21swapper/309:25:133
1017541992825,2cyclictest0-21swapper/308:38:593
1017541992825,2cyclictest0-21swapper/308:38:583
1017541992825,2cyclictest0-21swapper/307:58:593
101754199280,27cyclictest0-21swapper/311:50:133
101754199280,27cyclictest0-21swapper/309:44:593
1017538992824,2cyclictest0-21swapper/212:14:552
101753899280,2cyclictest0-21swapper/211:20:592
101753899280,26cyclictest0-21swapper/212:00:142
101753899280,26cyclictest0-21swapper/207:32:592
4577091270,6ptp4l61490irq/134-eno1-TxRx-007:35:013
4577091270,5ptp4l61490irq/134-eno1-TxRx-011:25:003
4577091270,5ptp4l61490irq/134-eno1-TxRx-010:49:563
4577091270,5ptp4l61490irq/134-eno1-TxRx-008:35:013
4577091270,4ptp4l441ktimers/308:19:563
1017538992724,2cyclictest0-21swapper/212:29:592
1017538992724,2cyclictest0-21swapper/208:05:592
1017538992724,2cyclictest0-21swapper/207:13:002
101753899270,25cyclictest0-21swapper/212:25:002
101753899270,25cyclictest0-21swapper/211:50:592
101753899270,19cyclictest0-21swapper/211:02:592
4577091260,5ptp4l61490irq/134-eno1-TxRx-011:49:553
4577091260,5ptp4l61490irq/134-eno1-TxRx-010:24:553
4577091260,4ptp4l61490irq/134-eno1-TxRx-008:49:553
4577091260,4ptp4l441ktimers/309:19:553
1017538992622,2cyclictest0-21swapper/209:48:592
101753899260,24cyclictest0-21swapper/211:30:592
101753899260,24cyclictest0-21swapper/211:30:592
4577091250,4ptp4l61490irq/134-eno1-TxRx-009:24:573
101754199250,24cyclictest0-21swapper/312:09:003
1017538992522,2cyclictest0-21swapper/211:05:142
1017538992421,2cyclictest0-21swapper/210:39:582
1017538992421,2cyclictest0-21swapper/210:09:582
1017538992421,2cyclictest0-21swapper/207:20:592
1017541992321,1cyclictest0-21swapper/308:13:593
1017538992220,1cyclictest0-21swapper/210:44:552
1017538992118,2cyclictest0-21swapper/209:50:132
1017538992118,2cyclictest0-21swapper/208:42:592
1017538992017,2cyclictest0-21swapper/211:11:592
1017538991816,1cyclictest0-21swapper/208:24:592
1017538991612,2cyclictest0-21swapper/207:46:002
101753899129,2cyclictest0-21swapper/210:25:592
10175389995,2cyclictest0-21swapper/209:22:582
10175389940,3cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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