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2026-07-16 - 11:49
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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 792 highest latencies:
System rackeslot6.osadl.org (updated Thu Jul 16, 2026 00:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
135112999138123,10cyclictest1440380-21kworker/u8:1+flush-179:000:00:010
135113299130124,4cyclictest1367770-21kworker/u8:1+events_unbound20:05:241
135113299129112,14cyclictest1213033-21systemd-journal00:05:001
13511299912698,16cyclictest1389504-21latency_hist21:10:000
135112999126116,7cyclictest1399053-21latency_hist21:40:010
1351129991251,120cyclictest1-21systemd19:50:000
135112999123109,10cyclictest1421862-21apt-get22:50:000
135112999121109,9cyclictest1213033-21systemd-journal19:35:000
13511329912095,7cyclictest1457249-21latency_hist00:40:011
13511329912095,7cyclictest1457249-21latency_hist00:40:011
135113299120112,6cyclictest1419715-21kworker/u8:0+events_unbound22:45:001
135113299119108,8cyclictest1415200-21kworker/u8:1+flush-179:022:30:031
135113299119108,8cyclictest1415200-21kworker/u8:1+flush-179:022:30:021
135113299112106,4cyclictest1436409-21kworker/u8:2+flush-179:023:50:001
135113299111103,5cyclictest1359983-21kworker/u8:3+events_unbound20:20:241
135112999111104,4cyclictest1370437-21kworker/u8:2+flush-179:020:15:210
135113299109103,4cyclictest1447728-21kworker/u8:2+events_unbound00:15:231
135113299109103,4cyclictest1447728-21kworker/u8:2+events_unbound00:15:231
135113299109102,6cyclictest1333436-21kworker/u8:3+flush-179:019:20:011
13511299910999,7cyclictest1402269-21kworker/u8:3+flush-179:022:15:210
13511329910896,7cyclictest1394327-21kworker/u8:0+flush-179:021:30:201
13511329910698,6cyclictest1407308-21kworker/u8:1+events_unbound22:15:001
13511329910697,6cyclictest1387963-21kworker/u8:2+events_unbound21:30:011
13511329910597,6cyclictest1401699-21kworker/u8:0+flush-179:022:00:011
135113299105100,4cyclictest1420316-21kworker/u8:1+flush-179:023:20:001
13511329910498,4cyclictest1359983-21kworker/u8:3+flush-179:020:45:171
13511299910390,8cyclictest1438073-21kworker/u8:0+flush-179:000:04:020
13511329910094,5cyclictest1359983-21kworker/u8:3+flush-179:020:00:241
13511329910090,7cyclictest1415285-21kworker/u8:3+flush-179:023:25:011
1351132999990,6cyclictest1399099-21kworker/u8:1+flush-179:021:45:211
1351132999988,9cyclictest1365375-21apt-get19:55:001
1351132999589,4cyclictest1420316-21kworker/u8:1+flush-179:023:10:201
1351132999587,6cyclictest1359983-21kworker/u8:3+flush-179:020:35:141
1351132999584,9cyclictest1391343-21apt-get21:15:091
1351132999489,3cyclictest1402269-21kworker/u8:3+flush-179:022:20:151
1351132999488,4cyclictest1354205-21kworker/u8:0+flush-179:019:25:251
1351129999483,7cyclictest510-21rs:main0
1351132999388,4cyclictest1447728-21kworker/u8:2+events_unbound00:10:261
1351132999385,5cyclictest1415285-21kworker/u8:3+flush-179:023:35:161
1351132999285,5cyclictest1387963-21kworker/u8:2+events_unbound21:50:211
1351132999284,5cyclictest1387951-21kworker/u8:0+flush-179:021:10:251
1351129999279,10cyclictest1405408-21apt-get22:00:010
1351132998982,5cyclictest1425844-21diskstats23:00:141
1351129998879,6cyclictest1378334-21kworker/u8:1+flush-179:020:40:210
1351129998878,8cyclictest1213033-21systemd-journal20:35:000
1351132998779,6cyclictest1433290-21kworker/u8:0+flush-179:023:25:201
1351129998778,6cyclictest1387963-21kworker/u8:2+flush-179:021:20:010
1351132998680,4cyclictest1378334-21kworker/u8:1+flush-179:020:55:161
1351132998678,6cyclictest1443047-21apt-get23:55:101
1351129998679,5cyclictest1420316-21kworker/u8:1+events_unbound23:10:250
1351129998675,9cyclictest1359983-21kworker/u8:3+flush-179:020:45:230
1351132998579,4cyclictest1402269-21kworker/u8:3+events_unbound22:15:191
1351132998579,4cyclictest1333436-21kworker/u8:3+events_unbound19:10:251
1351129998578,4cyclictest1378334-21kworker/u8:1+events_unbound21:00:190
1351129998576,6cyclictest1454030-21kworker/u8:2+flush-179:000:30:200
1351132998478,4cyclictest1452443-21kworker/u8:1+events_unbound00:25:241
1351132998478,4cyclictest1413894-21apt-get22:25:101
1351132998474,7cyclictest1373634-21kworker/u8:0+flush-179:020:30:181
1351132998465,16cyclictest1213033-21systemd-journal20:29:441
1351129998474,6cyclictest1415285-21kworker/u8:3+flush-179:023:40:000
1351132998377,4cyclictest1354205-21kworker/u8:0+flush-179:019:40:211
1351132998373,7cyclictest1387963-21kworker/u8:2+flush-179:021:20:161
1351129998375,6cyclictest1412309-21apt-get22:20:100
1351129998372,8cyclictest1378334-21kworker/u8:1+flush-179:020:50:170
1351129998372,8cyclictest1378334-21kworker/u8:1+flush-179:020:50:170
1351132998276,4cyclictest1452443-21kworker/u8:1+flush-179:000:34:551
1351129998273,6cyclictest1359983-21kworker/u8:3+flush-179:020:20:200
1351132998174,5cyclictest1370437-21kworker/u8:2+flush-179:020:10:241
1351132998172,7cyclictest1419715-21kworker/u8:0+flush-179:022:50:231
1351129998169,9cyclictest1387963-21kworker/u8:2+flush-179:021:25:220
1351132998073,5cyclictest1420316-21kworker/u8:1+events_unbound22:55:191
1351132997974,4cyclictest1436409-21kworker/u8:2+flush-179:023:40:211
1351132997972,6cyclictest1351062-21kworker/u8:2+flush-179:019:20:161
1351132997971,5cyclictest1387963-21kworker/u8:2+flush-179:021:40:161
1351132997971,5cyclictest1387963-21kworker/u8:2+flush-179:021:40:161
1351132997969,8cyclictest1415285-21kworker/u8:3+flush-179:023:10:011
1351132997969,8cyclictest1213033-21systemd-journal19:50:001
1351129997972,5cyclictest1420316-21kworker/u8:1+flush-179:023:05:250
1351129997968,8cyclictest1439877-21apt-get23:45:100
1351129997873,3cyclictest1359983-21kworker/u8:3+events_unbound20:25:240
1351129997871,5cyclictest1354205-21kworker/u8:0+flush-179:019:25:130
1351129997870,5cyclictest1359983-21kworker/u8:3+flush-179:020:35:250
1351129997770,4cyclictest1370437-21kworker/u8:2+flush-179:020:10:140
1351129997668,5cyclictest1434842-21latency_hist23:30:020
1351132997568,6cyclictest1359983-21kworker/u8:3+flush-179:020:45:001
1351132997564,8cyclictest1213033-21systemd-journal20:00:001
1351129997470,3cyclictest1387963-21kworker/u8:2+flush-179:021:20:260
1351129997468,4cyclictest1359983-21kworker/u8:3+flush-179:020:00:150
1351132997368,4cyclictest1370437-21kworker/u8:2+flush-179:020:19:541
1351129997366,5cyclictest1423932-21/usr/sbin/munin22:55:170
1351132997267,4cyclictest1381586-21kworker/u8:0+flush-179:020:50:271
1351132997267,4cyclictest1381586-21kworker/u8:0+flush-179:020:50:271
1351129997264,6cyclictest1402269-21kworker/u8:3+flush-179:022:10:250
1351129997259,10cyclictest1360865-21apt-get19:40:100
1351132997165,4cyclictest1412095-21kworker/u8:2+flush-179:022:39:591
1351129997163,5cyclictest1438073-21kworker/u8:0+flush-179:000:25:170
1351129997160,8cyclictest1444442-21kworker/u8:3+flush-179:000:05:220
1351132997060,8cyclictest1444442-21kworker/u8:3+flush-179:000:05:241
1351129997064,4cyclictest1412095-21kworker/u8:2+flush-179:022:35:240
1351129997061,6cyclictest1354205-21kworker/u8:0+flush-179:019:35:240
1351132996958,5cyclictest1355863-21kworker/u8:1+events_unbound19:30:221
1351132996863,4cyclictest1402269-21kworker/u8:3+events_unbound22:10:001
1351132996863,4cyclictest1402269-21kworker/u8:3+events_unbound22:10:001
1351129996860,6cyclictest1333436-21kworker/u8:3+flush-179:019:10:220
1351129996860,5cyclictest1447728-21kworker/u8:2+flush-179:000:10:180
1351129996845,20cyclictest1365365-21latency_hist19:55:010
1351129996764,2cyclictest1415285-21kworker/u8:3+flush-179:023:20:200
1351129996660,5cyclictest1419715-21kworker/u8:0+events_unbound22:40:240
1351129996655,8cyclictest1420316-21kworker/u8:1+events_unbound23:00:190
1351132996559,4cyclictest1433290-21kworker/u8:0+flush-179:023:30:151
1351129996557,6cyclictest1441462-21apt-get23:50:110
1351132996460,3cyclictest1438073-21kworker/u8:0+flush-179:000:20:251
1351132996459,4cyclictest1386297-21kworker/u8:3+flush-179:021:04:541
1351129996458,5cyclictest1351062-21kworker/u8:2+events_unbound19:15:240
1351129996357,4cyclictest1402269-21kworker/u8:3+flush-179:022:05:200
1351129996357,4cyclictest1402269-21kworker/u8:3+flush-179:022:05:190
1351129996355,6cyclictest1384708-21kworker/u8:2+events_unbound20:55:240
1351129996354,7cyclictest1354205-21kworker/u8:0+flush-179:019:20:220
1351129996258,3cyclictest1401699-21kworker/u8:0+events_unbound21:45:240
1351129996255,5cyclictest1440380-21kworker/u8:1+flush-179:000:15:160
1351129996255,5cyclictest1440380-21kworker/u8:1+flush-179:000:15:150
1351129996154,5cyclictest1401699-21kworker/u8:0+flush-179:021:50:230
1351129996149,9cyclictest1213033-21systemd-journal22:50:020
1351132996053,5cyclictest1387963-21kworker/u8:2+events_unbound21:35:241
1351129996056,3cyclictest1354205-21kworker/u8:0+flush-179:019:55:260
1351132995950,7cyclictest1386297-21kworker/u8:3+events_unbound21:05:231
1351132995745,9cyclictest1213033-21systemd-journal22:05:001
1351129995746,8cyclictest1447728-21kworker/u8:2+flush-179:000:20:200
1351129995746,8cyclictest1415285-21kworker/u8:3+events_unbound23:30:200
1351129995650,4cyclictest1367770-21kworker/u8:1+flush-179:020:05:160
1351129995649,5cyclictest1387963-21kworker/u8:2+flush-179:021:40:230
1351129995649,5cyclictest1387963-21kworker/u8:2+flush-179:021:40:230
1351129995547,6cyclictest1415285-21kworker/u8:3+flush-179:023:45:010
1351129995350,2cyclictest1452443-21kworker/u8:1+events_unbound00:35:190
1351129995350,2cyclictest1452443-21kworker/u8:1+events_unbound00:35:190
1351129995144,5cyclictest1412019-21kworker/u8:0+events_unbound22:25:240
1351129994942,5cyclictest1415285-21kworker/u8:3+flush-179:023:15:220
4577091480,12ptp4l441ktimers/319:09:553
1351129994843,4cyclictest1415200-21kworker/u8:1+events_unbound22:30:250
1351129994843,4cyclictest1415200-21kworker/u8:1+events_unbound22:30:250
1351132994734,11cyclictest1213033-21systemd-journal19:37:431
1351132994437,5cyclictest1419715-21kworker/u8:0+flush-179:022:45:151
1351129994336,5cyclictest1389758-21apt-get21:10:120
1351135994239,2cyclictest0-21swapper/223:36:592
1351139994134,6cyclictest1367237-21turbostat20:00:003
135113999410,40cyclictest0-21swapper/321:19:593
1351132994135,4cyclictest1440380-21kworker/u8:1+flush-179:023:50:211
1351139994033,5cyclictest1454056-21turbostat00:30:013
1351135994037,2cyclictest0-21swapper/220:31:592
135113599390,36cyclictest0-21swapper/223:04:562
135113599390,36cyclictest0-21swapper/200:40:002
135113599390,36cyclictest0-21swapper/200:40:002
1351139993836,1cyclictest0-21swapper/322:10:003
1351139993836,1cyclictest0-21swapper/322:09:593
1351139993832,5cyclictest1365381-21turbostat19:55:003
135113599380,36cyclictest0-21swapper/221:12:582
1351139993735,1cyclictest0-21swapper/321:46:593
1351139993734,2cyclictest0-21swapper/323:35:593
135113999370,36cyclictest0-21swapper/322:41:003
135113999370,36cyclictest0-21swapper/320:07:593
1351135993734,2cyclictest0-21swapper/223:59:592
1351135993734,2cyclictest0-21swapper/223:31:002
1351135993734,2cyclictest0-21swapper/200:25:592
135113599370,35cyclictest0-21swapper/221:45:012
135113599370,35cyclictest0-21swapper/221:45:002
135113599370,35cyclictest0-21swapper/221:21:592
135113599370,35cyclictest0-21swapper/219:28:592
1351129993732,4cyclictest1394327-21kworker/u8:0+flush-179:021:30:270
1351139993634,1cyclictest0-21swapper/322:49:583
1351139993634,1cyclictest0-21swapper/322:31:583
1351139993634,1cyclictest0-21swapper/322:31:583
1351139993633,2cyclictest0-21swapper/321:22:583
135113999360,35cyclictest0-21swapper/321:42:003
135113999360,35cyclictest0-21swapper/321:42:003
135113999360,35cyclictest0-21swapper/321:28:593
135113999360,1cyclictest0-21swapper/322:04:593
1351135993634,1cyclictest0-21swapper/222:15:592
1351135993634,1cyclictest0-21swapper/221:40:012
1351135993634,1cyclictest0-21swapper/200:10:002
1351135993633,2cyclictest0-21swapper/221:00:592
4577091350,28ptp4l61490irq/134-eno1-TxRx-023:15:123
1351139993533,1cyclictest0-21swapper/321:58:593
1351139993533,1cyclictest0-21swapper/321:54:543
135113999350,1cyclictest0-21swapper/320:32:593
135113999350,1cyclictest0-21swapper/300:33:583
135113599350,1cyclictest0-21swapper/223:17:592
1351139993331,1cyclictest0-21swapper/323:04:583
1351135993331,1cyclictest0-21swapper/223:00:012
1351135993330,2cyclictest0-21swapper/222:23:592
135113599330,31cyclictest0-21swapper/222:30:032
135113599330,31cyclictest0-21swapper/222:30:022
4577091320,11ptp4l441ktimers/323:45:013
135113999324,26cyclictest441ktimers/323:25:143
1351139993230,1cyclictest0-21swapper/322:13:593
1351139993230,1cyclictest0-21swapper/320:45:593
1351139993226,5cyclictest1412059-21turbostat22:19:593
1351139993225,6cyclictest0-21swapper/319:46:593
135113999320,26cyclictest0-21swapper/323:05:123
1351135993229,2cyclictest0-21swapper/220:51:592
1351135993229,2cyclictest0-21swapper/220:51:592
1351139993125,5cyclictest1391098-21turbostat21:15:013
1351139993124,6cyclictest1355841-21turbostat19:25:003
135113599310,5cyclictest0-21swapper/223:10:122
135113599310,5cyclictest0-21swapper/219:50:132
1351139993028,1cyclictest0-21swapper/323:53:593
1351139993028,1cyclictest0-21swapper/320:00:593
1351139993027,2cyclictest0-21swapper/300:35:133
1351139993027,2cyclictest0-21swapper/300:35:133
1351139993024,5cyclictest1379977-21turbostat20:40:003
135113999300,28cyclictest0-21swapper/320:40:133
135113999300,28cyclictest0-21swapper/319:40:593
135113999300,28cyclictest0-21swapper/319:35:133
1351135993027,2cyclictest0-21swapper/223:46:582
1351135993027,2cyclictest0-21swapper/223:05:122
135113599300,2cyclictest0-21swapper/222:50:122
135113599300,29cyclictest0-21swapper/219:55:022
1351139992927,1cyclictest0-21swapper/322:27:003
1351139992926,2cyclictest0-21swapper/323:55:113
1351139992926,2cyclictest0-21swapper/319:10:133
135113999290,28cyclictest0-21swapper/320:10:113
1351135992926,2cyclictest0-21swapper/222:08:002
1351135992926,2cyclictest0-21swapper/222:07:592
1351135992926,2cyclictest0-21swapper/221:15:112
1351135992926,2cyclictest0-21swapper/220:40:122
1351135992926,2cyclictest0-21swapper/219:40:122
1351135992926,2cyclictest0-21swapper/219:10:132
1351135992922,6cyclictest0-21swapper/200:04:582
135113599290,1cyclictest0-21swapper/221:55:122
4577091280,6ptp4l61490irq/134-eno1-TxRx-020:20:003
4577091280,6ptp4l441ktimers/321:35:013
4577091280,6ptp4l441ktimers/321:10:003
4577091280,6ptp4l441ktimers/319:30:003
4577091280,5ptp4l441ktimers/322:55:013
135113999280,27cyclictest0-21swapper/322:35:133
135113999280,27cyclictest0-21swapper/322:20:113
135113999280,27cyclictest0-21swapper/320:55:133
1351135992825,2cyclictest0-21swapper/223:25:122
1351135992825,2cyclictest0-21swapper/222:45:122
1351135992825,2cyclictest0-21swapper/219:30:592
1351135992825,2cyclictest0-21swapper/200:31:592
135113599280,2cyclictest0-21swapper/222:35:122
135113599280,2cyclictest0-21swapper/222:00:032
135113599280,27cyclictest0-21swapper/220:10:112
135113599280,27cyclictest0-21swapper/219:35:132
135113599280,27cyclictest0-21swapper/219:15:112
1351132992822,4cyclictest1351213-21latency_hist19:10:011
4577091270,7ptp4l441ktimers/300:05:013
4577091270,6ptp4l441ktimers/323:50:003
4577091270,6ptp4l441ktimers/321:40:013
4577091270,5ptp4l441ktimers/321:04:563
1351139992721,5cyclictest1359018-21turbostat19:35:003
1351135992724,2cyclictest0-21swapper/221:46:592
1351135992724,2cyclictest0-21swapper/221:28:582
1351135992724,2cyclictest0-21swapper/221:05:592
4577091260,6ptp4l441ktimers/322:59:563
4577091260,6ptp4l441ktimers/320:54:563
4577091260,6ptp4l441ktimers/320:54:563
4577091260,5ptp4l441ktimers/323:15:023
4577091260,5ptp4l441ktimers/320:24:543
1351139992624,1cyclictest0-21swapper/319:18:003
1351139992624,1cyclictest0-21swapper/300:19:593
1351139992624,1cyclictest0-21swapper/300:19:583
1351139992620,5cyclictest1452476-21turbostat00:25:003
1351135992623,2cyclictest0-21swapper/220:59:562
1351135992623,2cyclictest0-21swapper/220:01:592
135113599260,24cyclictest0-21swapper/223:40:592
135113599260,24cyclictest0-21swapper/222:25:592
135113599260,24cyclictest0-21swapper/220:47:592
4577091250,5ptp4l441ktimers/320:29:553
4577091250,5ptp4l441ktimers/300:14:553
1351135992523,1cyclictest0-21swapper/220:08:592
1351135992521,2cyclictest0-21swapper/200:24:552
1351129992520,4cyclictest0-21swapper/019:10:020
4577091240,4ptp4l441ktimers/323:24:563
1351139992422,1cyclictest0-21swapper/323:31:583
1351135992422,1cyclictest0-21swapper/220:39:002
1351135992320,2cyclictest0-21swapper/219:20:592
1351135992220,1cyclictest0-21swapper/222:43:002
1351135992220,1cyclictest0-21swapper/221:33:592
1351135992219,2cyclictest0-21swapper/200:17:592
1351135992219,2cyclictest0-21swapper/200:17:582
1351135992118,2cyclictest0-21swapper/222:13:592
1351135992018,1cyclictest0-21swapper/223:54:562
1351135992014,5cyclictest0-21swapper/223:23:592
1351139991916,2cyclictest0-21swapper/300:08:593
1351135991917,1cyclictest0-21swapper/220:25:002
1351135991916,2cyclictest0-21swapper/200:10:592
1351135991815,2cyclictest0-21swapper/220:27:582
1351135991512,2cyclictest0-21swapper/219:45:592
1351135991511,2cyclictest0-21swapper/221:54:552
135113599110,9cyclictest0-21swapper/220:19:552
13511359980,7cyclictest0-21swapper/219:10:032
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