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2026-04-11 - 00:04
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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 Fri Apr 10, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12361739910598,5cyclictest1291742-21kworker/u8:2+events_unbound11:50:220
12361779910090,7cyclictest1334421-21latency_hist12:15:021
1236177999586,7cyclictest1236065-21kworker/u8:3+flush-179:007:30:141
1236173999587,7cyclictest1258576-21kworker/u8:1+events_unbound09:00:010
1236173999587,7cyclictest1258576-21kworker/u8:1+events_unbound09:00:010
1236173999283,7cyclictest1295454-21latency_hist10:15:010
1236177998980,6cyclictest1316372-21kworker/u8:1+flush-179:011:45:231
1236177998872,14cyclictest1281140-21latency_hist09:30:011
1236177998477,4cyclictest1316372-21kworker/u8:1+flush-179:011:25:261
1236173998375,6cyclictest1287504-21latency_hist09:50:010
1236177998071,7cyclictest1282968-21/usr/sbin/munin09:35:231
1236177997866,8cyclictest266-21systemd-journal10:50:141
1236173997871,5cyclictest1282167-21kworker/u8:2+flush-179:009:30:230
1236173997764,11cyclictest1312969-21apt-get11:10:000
1236177997566,7cyclictest1336022-21latency_hist12:20:021
1236173997565,7cyclictest1291742-21kworker/u8:2+flush-179:010:45:130
1236173997366,4cyclictest1265032-21kworker/u8:3+flush-179:008:45:250
1236177997249,20cyclictest1295709-21apt-get10:15:101
4577091710,17ptp4l441ktimers/307:05:513
1236173997165,4cyclictest1277026-21kworker/u8:0+events_unbound09:20:230
1236173997164,5cyclictest1282167-21kworker/u8:2+flush-179:009:50:250
1236173997062,6cyclictest1258657-21kworker/u8:2+events_unbound08:30:190
1236173997062,6cyclictest1258657-21kworker/u8:2+events_unbound08:30:190
1236173996963,4cyclictest1282771-21kworker/u8:3+flush-179:010:00:160
1236173996963,4cyclictest1244240-21kworker/u8:2+events_unbound08:00:140
1236173996962,6cyclictest1316372-21kworker/u8:1+flush-179:011:35:240
1236173996962,4cyclictest1265032-21kworker/u8:3+flush-179:009:05:020
1236177996858,8cyclictest1247729-21apt-get07:45:111
1236173996854,12cyclictest266-21systemd-journal08:00:000
1236173996760,5cyclictest1236065-21kworker/u8:3+events_unbound07:20:020
1236173996760,5cyclictest1236065-21kworker/u8:3+events_unbound07:20:010
1236177996659,5cyclictest1282771-21kworker/u8:3+flush-179:010:25:171
1236173996658,5cyclictest1241321-21kworker/u8:1+events_unbound07:30:230
1236173996656,7cyclictest1282771-21kworker/u8:3+events_unbound10:40:190
1236177996557,6cyclictest1282167-21kworker/u8:2+flush-179:009:30:251
1236177996556,6cyclictest1291742-21kworker/u8:2+flush-179:012:05:141
1236173996557,4cyclictest1291742-21kworker/u8:2+events_unbound11:15:160
1236177996455,6cyclictest1261793-21latency_hist08:30:011
1236173996456,5cyclictest1282771-21kworker/u8:3+flush-179:010:30:160
1236177996354,7cyclictest266-21systemd-journal07:40:001
1236173996355,4cyclictest1231548-21kworker/u8:1+flush-179:007:15:000
1236173996354,6cyclictest1260746-21kworker/u8:0+flush-179:008:25:200
1236173996353,7cyclictest1291742-21kworker/u8:2+events_unbound10:35:150
1236177996255,4cyclictest1244240-21kworker/u8:2+flush-179:007:40:211
1236177996247,14cyclictest1258576-21kworker/u8:1+flush-179:008:40:001
1236173996256,3cyclictest1316372-21kworker/u8:1+flush-179:011:20:200
1236173996255,5cyclictest1328033-21kworker/u8:3+flush-179:011:55:190
1236173996255,4cyclictest1316372-21kworker/u8:1+events_unbound11:25:250
1236173996253,5cyclictest1252298-21kworker/u8:3+flush-179:008:05:200
1236173996154,4cyclictest1316372-21kworker/u8:1+events_unbound11:45:200
1236177996050,8cyclictest1240831-21apt-get07:24:591
1236177995949,7cyclictest1339202-21latency_hist12:30:011
1236173995953,4cyclictest1282167-21kworker/u8:2+events_unbound09:40:220
1236173995952,4cyclictest1291742-21kworker/u8:2+flush-179:011:10:210
1236173995949,7cyclictest1244240-21kworker/u8:2+events_unbound07:45:140
1236177995847,9cyclictest266-21systemd-journal09:10:001
1236177995839,3cyclictest1260209-21munin-run08:25:001
1236173995852,4cyclictest1282771-21kworker/u8:3+events_unbound10:20:150
1236173995848,8cyclictest1337870-21apt-get12:25:130
1236177995748,6cyclictest1265032-21kworker/u8:3+events_unbound09:15:141
1236177995748,6cyclictest1265032-21kworker/u8:3+events_unbound09:00:191
1236173995751,4cyclictest1252298-21kworker/u8:3+flush-179:008:15:250
1236177995648,6cyclictest1291742-21kworker/u8:2+events_unbound11:40:021
1236177995645,9cyclictest266-21systemd-journal09:55:001
1236173995651,4cyclictest1291742-21kworker/u8:2+flush-179:010:29:550
1236177995416,37cyclictest1337631-21idleruntime-cro12:24:591
1236173995448,4cyclictest1316372-21kworker/u8:1+flush-179:011:30:170
1236173995446,5cyclictest1291742-21kworker/u8:2+flush-179:012:30:210
1236173995445,7cyclictest1258877-21apt-get08:20:130
1236177995347,4cyclictest1331249-21latency_hist12:05:001
1236177995346,5cyclictest1268411-21apt-get08:50:111
1236177995344,6cyclictest1282771-21kworker/u8:3+events_unbound09:45:151
1236177995343,7cyclictest1339238-21kworker/u8:0+events_unbound12:35:131
1236177995337,14cyclictest1258576-21kworker/u8:1+events_unbound08:30:131
1236177995337,14cyclictest1258576-21kworker/u8:1+events_unbound08:30:131
1236173995348,3cyclictest1236065-21kworker/u8:3+flush-179:007:35:140
1236173995346,5cyclictest1336285-21apt-get12:20:100
1236173995346,5cyclictest1282771-21kworker/u8:3+flush-179:009:55:150
1236177995247,3cyclictest1236003-21kworker/u8:0+flush-179:007:15:201
1236177995247,3cyclictest1236003-21kworker/u8:0+flush-179:007:15:191
1236177995245,5cyclictest1265032-21kworker/u8:3+flush-179:009:10:181
1236177995243,7cyclictest1291742-21kworker/u8:2+flush-179:010:00:211
1236177995242,8cyclictest1310043-21apt-get11:00:111
1236173995245,5cyclictest1282771-21kworker/u8:3+events_unbound10:15:230
1236177995142,7cyclictest1291742-21kworker/u8:2+flush-179:011:50:211
1236173995145,5cyclictest1239784-21diskstats07:20:140
1236173995145,4cyclictest1277026-21kworker/u8:0+flush-179:009:20:000
1236173995045,4cyclictest1264950-21kworker/u8:2+flush-179:008:39:560
1236173995044,4cyclictest1291742-21kworker/u8:2+events_unbound11:40:240
1236173995044,4cyclictest1291742-21kworker/u8:2+events_unbound10:55:240
1236177994943,4cyclictest1336073-21kworker/u8:1+events_unbound12:30:241
1236173994943,4cyclictest1291742-21kworker/u8:2+flush-179:010:50:190
1236177994838,7cyclictest510-21rs:main1
1236177994640,4cyclictest1291742-21kworker/u8:2+events_unbound10:10:131
1236177994638,6cyclictest1291742-21kworker/u8:2+flush-179:010:55:151
1236177994439,4cyclictest1282771-21kworker/u8:3+flush-179:010:30:131
1236173994441,2cyclictest714-21Xorg07:51:000
1236173994438,5cyclictest1265032-21kworker/u8:3+flush-179:008:55:010
1236173994438,4cyclictest1277026-21kworker/u8:0+events_unbound09:35:180
1236182994340,2cyclictest0-21swapper/310:14:593
1236177994336,5cyclictest1316372-21kworker/u8:1+events_unbound11:20:141
1236173994329,11cyclictest266-21systemd-journal07:25:130
123618299420,1cyclictest0-21swapper/308:09:563
1236177994237,4cyclictest1291742-21kworker/u8:2+flush-179:010:39:561
1236177994237,4cyclictest1277026-21kworker/u8:0+flush-179:009:20:181
1236177994236,4cyclictest1290705-21latency_hist10:00:011
123617799422,37cyclictest1257265-21apt-get08:15:151
1236173994239,2cyclictest0-21swapper/012:36:590
1236173994237,4cyclictest1329622-21kworker/u8:0+events_unbound12:00:230
1236173994237,4cyclictest1256735-21kworker/u8:0+events_unbound08:14:550
1236173994234,6cyclictest1276362-21latency_hist09:15:010
123618299410,1cyclictest0-21swapper/307:37:593
1236177994137,3cyclictest1252298-21kworker/u8:3+flush-179:008:05:241
123617399411,3cyclictest1332837-21munin-run12:09:590
1236178994037,2cyclictest0-21swapper/211:25:582
1236177994033,6cyclictest1236065-21kworker/u8:3+flush-179:007:30:011
1236173994031,6cyclictest1258576-21kworker/u8:1+events_unbound08:40:130
123618299390,38cyclictest1293889-21turbostat10:10:013
1236177993935,3cyclictest1236065-21kworker/u8:3+flush-179:007:10:211
123617799390,36cyclictest0-21swapper/110:40:121
1236173993934,4cyclictest1291742-21kworker/u8:2+events_unbound12:15:230
123617399391,35cyclictest908065-21snmpd10:05:120
123617399390,37cyclictest714-21Xorg09:08:590
1236182993835,2cyclictest0-21swapper/309:57:593
1236182993831,6cyclictest1260214-21turbostat08:25:013
123617899380,35cyclictest0-21swapper/212:24:562
123617899380,35cyclictest0-21swapper/209:52:592
1236177993835,2cyclictest0-21swapper/107:56:591
1236177993834,2cyclictest714-21Xorg08:12:591
1236177993834,2cyclictest714-21Xorg07:53:591
1236173993834,3cyclictest1244240-21kworker/u8:2+flush-179:007:40:160
1236182993735,1cyclictest0-21swapper/312:04:563
1236182993734,2cyclictest0-21swapper/310:27:593
1236182993730,6cyclictest0-21swapper/307:26:593
123618299370,1cyclictest0-21swapper/310:45:583
1236178993734,2cyclictest0-21swapper/211:09:542
1236178993734,2cyclictest0-21swapper/208:13:592
123617899370,35cyclictest0-21swapper/211:16:592
123617899370,35cyclictest0-21swapper/209:01:592
1236182993632,2cyclictest0-21swapper/310:30:593
123618299360,35cyclictest0-21swapper/309:29:553
123618299360,1cyclictest0-21swapper/312:24:593
123618299360,1cyclictest0-21swapper/311:39:553
1236178993633,2cyclictest0-21swapper/209:47:592
1236178993633,2cyclictest0-21swapper/207:42:002
1236178993633,2cyclictest0-21swapper/207:36:002
1236177993631,4cyclictest1293916-21latency_hist10:10:011
1236177993630,4cyclictest1282771-21kworker/u8:3+events_unbound10:20:121
4577091350,3ptp4l441ktimers/311:15:133
1236182993532,2cyclictest0-21swapper/309:33:593
123618299350,2cyclictest1279562-21turbostat09:25:003
123618299350,27cyclictest0-21swapper/312:30:123
123618299350,27cyclictest0-21swapper/308:55:123
123618299350,27cyclictest0-21swapper/308:55:123
123618299350,1cyclictest0-21swapper/312:39:593
123618299350,1cyclictest0-21swapper/310:55:593
1236178993532,2cyclictest0-21swapper/212:09:552
1236178993532,2cyclictest0-21swapper/211:58:592
1236178993532,2cyclictest0-21swapper/208:00:582
1236178993532,2cyclictest0-21swapper/207:24:002
1236178993532,2cyclictest0-21swapper/207:14:562
1236177993530,4cyclictest1244240-21kworker/u8:2+events_unbound08:00:171
1236177993517,17cyclictest0-21swapper/111:30:141
123617399351,31cyclictest908065-21snmpd09:25:130
1236182993433,1cyclictest0-21swapper/311:41:593
1236182993431,2cyclictest0-21swapper/312:17:003
1236177993431,2cyclictest0-21swapper/108:44:551
1236177993429,4cyclictest1291742-21kworker/u8:2+flush-179:010:45:161
1236173993431,2cyclictest211irq_work/011:00:580
1236182993330,2cyclictest0-21swapper/311:29:593
123618299330,27cyclictest0-21swapper/309:05:023
1236177993324,7cyclictest266-21systemd-journal12:00:011
1236182993225,6cyclictest0-21swapper/307:55:133
123618299320,30cyclictest0-21swapper/307:30:123
123618299320,26cyclictest0-21swapper/307:20:123
1236178993229,2cyclictest0-21swapper/212:14:542
1236178993229,2cyclictest0-21swapper/210:15:582
1236178993229,2cyclictest0-21swapper/210:03:592
1236178993229,2cyclictest0-21swapper/209:44:552
1236178993229,2cyclictest0-21swapper/209:35:592
1236178993229,2cyclictest0-21swapper/209:10:592
123617799320,2cyclictest714-21Xorg11:07:001
1236173993227,4cyclictest1332870-21kworker/u8:3+flush-179:012:10:200
1236182993128,2cyclictest0-21swapper/309:03:593
1236182993125,5cyclictest0-21swapper/308:37:593
1236178993129,1cyclictest0-21swapper/208:51:592
1236178993128,2cyclictest0-21swapper/208:19:552
123617899310,29cyclictest0-21swapper/209:05:022
123617799311,3cyclictest0-21swapper/109:40:121
4577091300,6ptp4l441ktimers/311:05:003
1236182993028,1cyclictest0-21swapper/310:38:593
1236182993027,2cyclictest0-21swapper/307:44:583
123618299300,28cyclictest0-21swapper/311:55:103
123618299300,1cyclictest0-21swapper/309:45:123
1236178993027,2cyclictest0-21swapper/211:45:132
1236178993027,2cyclictest0-21swapper/211:35:032
1236178993027,2cyclictest0-21swapper/208:57:592
1236178993027,2cyclictest0-21swapper/208:57:582
123617899300,2cyclictest0-21swapper/211:10:032
1236177993027,2cyclictest1315060-21apt-get11:15:121
1236177993027,2cyclictest0-21swapper/111:10:121
123617799301,28cyclictest0-21swapper/108:46:001
4577091290,7ptp4l441ktimers/309:55:003
4577091290,7ptp4l441ktimers/309:20:013
4577091290,6ptp4l441ktimers/310:25:003
4577091290,6ptp4l441ktimers/308:55:023
1236182992927,1cyclictest0-21swapper/310:41:593
123618299290,27cyclictest0-21swapper/311:50:113
123618299290,1cyclictest0-21swapper/308:00:133
1236178992927,1cyclictest0-21swapper/208:24:592
1236178992927,1cyclictest0-21swapper/207:55:142
1236178992926,2cyclictest0-21swapper/211:50:122
1236178992926,2cyclictest0-21swapper/209:55:132
1236178992926,2cyclictest0-21swapper/208:39:552
1236178992926,2cyclictest0-21swapper/208:31:592
1236178992926,2cyclictest0-21swapper/208:31:592
1236178992926,2cyclictest0-21swapper/207:50:132
1236178992926,2cyclictest0-21swapper/207:30:102
1236178992926,2cyclictest0-21swapper/207:25:012
1236178992926,2cyclictest0-21swapper/207:17:582
1236178992926,2cyclictest0-21swapper/207:17:582
123617899290,27cyclictest0-21swapper/212:30:112
123617899290,27cyclictest0-21swapper/212:00:092
4577091280,6ptp4l441ktimers/311:35:013
4577091280,6ptp4l441ktimers/308:34:563
4577091280,6ptp4l441ktimers/308:34:563
1236182992826,1cyclictest0-21swapper/311:20:113
1236182992826,1cyclictest0-21swapper/308:15:133
1236182992825,2cyclictest0-21swapper/307:15:133
1236182992825,2cyclictest0-21swapper/307:15:123
123618299280,26cyclictest0-21swapper/311:45:133
123618299280,26cyclictest0-21swapper/307:50:143
123618299280,1cyclictest0-21swapper/311:14:593
1236178992825,2cyclictest0-21swapper/209:27:592
1236178992825,2cyclictest0-21swapper/208:27:592
123617899280,26cyclictest0-21swapper/208:45:132
1236177992826,1cyclictest0-21swapper/108:59:561
1236177992826,1cyclictest0-21swapper/108:59:551
4577091270,6ptp4l61490irq/134-eno1-TxRx-010:04:563
4577091270,6ptp4l441ktimers/310:54:563
4577091270,6ptp4l441ktimers/308:49:563
4577091270,6ptp4l441ktimers/308:44:553
4577091270,5ptp4l441ktimers/307:49:543
1236182992724,2cyclictest0-21swapper/308:28:583
1236182992720,6cyclictest0-21swapper/312:10:123
1236178992725,1cyclictest0-21swapper/210:14:592
1236178992725,1cyclictest0-21swapper/209:34:552
1236178992724,2cyclictest0-21swapper/210:45:592
1236178992724,2cyclictest0-21swapper/210:40:592
1236178992724,2cyclictest0-21swapper/208:06:592
4577091260,5ptp4l441ktimers/309:14:553
4577091260,4ptp4l441ktimers/310:20:003
4577091260,4ptp4l441ktimers/308:14:563
1236182992623,2cyclictest0-21swapper/309:40:113
1236178992624,1cyclictest0-21swapper/212:18:592
1236178992624,1cyclictest0-21swapper/211:40:012
1236178992622,2cyclictest0-21swapper/211:04:552
123617899260,2cyclictest0-21swapper/207:47:582
123617899260,24cyclictest0-21swapper/211:22:592
123617899260,24cyclictest0-21swapper/210:56:592
123617899260,24cyclictest0-21swapper/210:33:592
123617899260,24cyclictest0-21swapper/209:18:592
4577091250,4ptp4l61490irq/134-eno1-TxRx-011:09:563
4577091250,4ptp4l441ktimers/309:39:543
4577091250,4ptp4l441ktimers/307:14:553
123618299250,24cyclictest0-21swapper/312:07:583
1236178992522,2cyclictest0-21swapper/212:36:582
1236178992421,2cyclictest0-21swapper/210:09:562
1236178992421,2cyclictest0-21swapper/208:42:582
1236182992321,1cyclictest0-21swapper/312:25:583
1236178992219,2cyclictest0-21swapper/210:52:592
1236178992219,2cyclictest0-21swapper/210:38:002
1236178992219,2cyclictest0-21swapper/210:24:002
1236178992119,1cyclictest0-21swapper/209:24:592
1236178992118,2cyclictest0-21swapper/210:27:592
1236178992017,2cyclictest0-21swapper/211:32:002
1236178991916,2cyclictest0-21swapper/212:29:002
1236177991613,2cyclictest0-21swapper/107:10:011
123617399148,4cyclictest0-21swapper/007:10:020
12361789930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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