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2026-04-13 - 20:30
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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 Mon Apr 13, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11468199910394,7cyclictest1212506-21latency_hist10:35:001
1146815998878,7cyclictest1176969-21latency_hist08:45:000
1146819998778,7cyclictest1225241-21latency_hist11:15:021
1146815998369,11cyclictest266-21systemd-journal09:55:010
1146815998074,4cyclictest1175419-21kworker/u8:1+flush-179:009:55:250
1146815998074,4cyclictest1175419-21kworker/u8:1+flush-179:008:55:170
1146815997871,5cyclictest1241412-21kworker/u8:2+flush-179:012:15:220
1146815997771,4cyclictest1201409-21kworker/u8:0+flush-179:010:15:230
1146815997671,4cyclictest1220436-21kworker/u8:1+flush-179:011:00:220
1146815997669,5cyclictest1162640-21latency_hist08:00:010
1146815997669,5cyclictest1145203-21kworker/u8:2+flush-179:007:25:160
1146819997567,6cyclictest1169009-21latency_hist08:20:011
1146815997468,4cyclictest1175419-21kworker/u8:1+flush-179:009:25:240
1146815997464,8cyclictest1209587-21apt-get10:25:120
1146815997464,8cyclictest1209587-21apt-get10:25:120
1146815997263,6cyclictest1180400-21latency_hist08:55:020
1146815996960,5cyclictest1204533-21kworker/u8:1+flush-179:010:35:220
1146815996863,4cyclictest1162603-21kworker/u8:2+flush-179:008:35:220
1146815996863,4cyclictest1145203-21kworker/u8:2+flush-179:007:40:010
1146815996861,5cyclictest1216058-21kworker/u8:0+flush-179:011:25:220
1146815996860,6cyclictest1196334-21latency_hist09:45:010
1146815996860,6cyclictest1196334-21latency_hist09:45:000
1146815996760,5cyclictest1216058-21kworker/u8:0+events_unbound11:10:200
1146815996660,4cyclictest1175419-21kworker/u8:1+events_unbound09:35:230
1146815996659,6cyclictest1162603-21kworker/u8:2+events_unbound08:09:590
1146815996651,11cyclictest266-21systemd-journal09:20:000
1146815996457,5cyclictest1142081-21kworker/u8:1+flush-179:007:15:160
1146819996351,9cyclictest1160463-21kworker/u8:1+flush-179:008:10:221
1146815996353,7cyclictest1160463-21kworker/u8:1+events_unbound08:00:200
1146819996255,5cyclictest1219128-21apt-get10:55:131
1146815996255,4cyclictest1235045-21kworker/u8:1+events_unbound12:35:000
1146815996254,6cyclictest1197920-21latency_hist09:50:000
1146815996253,7cyclictest1235045-21kworker/u8:1+flush-179:011:55:250
1146815996247,12cyclictest1237997-21apt-get11:55:010
1146819996154,5cyclictest1233211-21latency_hist11:40:011
1146815996151,6cyclictest1142081-21kworker/u8:1+events_unbound07:10:020
1146819996053,5cyclictest1235045-21kworker/u8:1+flush-179:012:00:001
1146819996048,10cyclictest1241693-21apt-get12:05:101
1146819996043,16cyclictest1193121-21kworker/u8:2+flush-179:009:50:231
1146815996051,7cyclictest266-21systemd-journal10:09:590
1146819995850,6cyclictest1220736-21apt-get11:00:101
1146815995853,4cyclictest1223892-21kworker/u8:3+flush-179:011:15:160
1146815995750,5cyclictest1201409-21kworker/u8:0+flush-179:010:10:170
1146815995653,2cyclictest714-21Xorg07:30:590
1146819995548,5cyclictest1215701-21latency_hist10:45:011
1146819995547,5cyclictest1161043-21latency_hist07:55:011
1146819995543,9cyclictest1201409-21kworker/u8:0+flush-179:010:10:221
1146819995543,9cyclictest1193681-21diskstats09:35:151
1146815995550,4cyclictest1175419-21kworker/u8:1+flush-179:009:20:270
1146815995549,4cyclictest1204533-21kworker/u8:1+flush-179:010:20:190
1146815995545,7cyclictest1230060-21kworker/u8:2+flush-179:011:30:160
1146819995448,5cyclictest1183044-21kworker/u8:0+events_unbound09:05:011
1146819995445,7cyclictest1251217-21/usr/sbin/munin12:35:231
1146819995347,4cyclictest1249428-21kworker/u8:2+flush-179:012:30:221
1146819995336,15cyclictest1226896-21kworker/u8:1+flush-179:011:30:261
1146819995247,4cyclictest1215955-21apt-get10:45:131
1146815995247,4cyclictest1204533-21kworker/u8:1+events_unbound10:50:180
1146815995247,4cyclictest1162603-21kworker/u8:2+events_unbound08:30:220
1146815995246,4cyclictest1162603-21kworker/u8:2+events_unbound08:20:250
1146819995144,5cyclictest1227107-21apt-get11:20:091
1146819995141,8cyclictest1170857-21apt-get08:25:111
1146815995146,4cyclictest1160463-21kworker/u8:1+flush-179:008:14:550
1146819995044,4cyclictest1175419-21kworker/u8:1+flush-179:009:05:261
1146819995041,7cyclictest266-21systemd-journal09:23:571
1146815995047,2cyclictest1176983-21apt-get08:45:030
1146815995045,4cyclictest1183044-21kworker/u8:0+events_unbound09:00:250
4577091490,13ptp4l61490irq/134-eno1-TxRx-007:10:013
1146819994939,8cyclictest1145203-21kworker/u8:2+flush-179:007:14:551
1146819994931,16cyclictest714-21Xorg09:57:591
1146815994943,4cyclictest1204583-21kworker/u8:2+flush-179:010:30:180
1146819994842,4cyclictest1216058-21kworker/u8:0+flush-179:011:05:221
1146819994841,5cyclictest1160463-21kworker/u8:1+flush-179:007:55:171
1146815994842,5cyclictest1235045-21kworker/u8:1+flush-179:012:05:240
1146815994840,6cyclictest1223654-21latency_hist11:10:010
1146815994839,7cyclictest510-21rs:main0
1146815994837,8cyclictest266-21systemd-journal09:10:000
114681599480,45cyclictest1161053-21perf07:55:000
1146819994743,3cyclictest1230060-21kworker/u8:2+flush-179:011:45:231
1146819994742,4cyclictest1162603-21kworker/u8:2+flush-179:008:35:251
1146819994742,3cyclictest1190000-21kworker/u8:3+flush-179:009:40:201
1146819994742,3cyclictest1190000-21kworker/u8:3+flush-179:009:40:201
1146819994741,5cyclictest1145203-21kworker/u8:2+events_unbound07:45:001
1146819994730,16cyclictest1178191-21needreboot08:45:171
1146815994742,4cyclictest1235045-21kworker/u8:1+events_unbound12:00:220
1146815994742,4cyclictest1235045-21kworker/u8:1+events_unbound12:00:220
1146815994738,6cyclictest1146807-21cyclictest07:42:590
1146819994640,5cyclictest1233186-21kworker/u8:0+flush-179:011:40:231
1146819994626,17cyclictest1153316-21apt-get07:30:121
1146815994636,8cyclictest1145203-21kworker/u8:2+flush-179:007:45:200
1146819994539,4cyclictest1183044-21kworker/u8:0+flush-179:009:10:151
1146819994524,3cyclictest1246194-21cron12:20:001
1146815994440,3cyclictest1160463-21kworker/u8:1+events_unbound08:25:140
1146815994439,4cyclictest1183044-21kworker/u8:0+flush-179:009:30:160
1146819994334,7cyclictest1195769-21kworker/u8:0+flush-179:009:45:171
1146819994327,14cyclictest266-21systemd-journal10:50:451
1146815994340,2cyclictest1209377-21kworker/u8:3+events_unbound10:40:210
1146815994339,3cyclictest1235045-21kworker/u8:1+flush-179:012:10:590
114682099420,40cyclictest0-21swapper/207:33:592
1146819994223,2cyclictest1153068-21munin-run07:30:001
1146815994237,4cyclictest191rcuc/010:49:590
1146815994237,4cyclictest1183044-21kworker/u8:0+flush-179:009:10:210
114682299410,1cyclictest0-21swapper/311:40:593
1146819994136,3cyclictest1214104-21munin-run10:40:011
1146819994135,5cyclictest1243057-21kworker/u8:3+flush-179:012:20:231
1146819994133,6cyclictest1178351-21kworker/u8:3+events_unbound09:00:001
1146819994133,6cyclictest1145203-21kworker/u8:2+flush-179:007:45:161
1146815994138,2cyclictest1249431-21systemd-run12:30:010
1146815994136,4cyclictest1150145-21kworker/u8:0+events_unbound07:20:150
1146815994135,5cyclictest1235045-21kworker/u8:1+flush-179:012:20:270
1146819994034,4cyclictest1-21systemd10:25:011
1146819994032,7cyclictest1197976-21kworker/u8:3+flush-179:010:05:011
1146819994022,2cyclictest714-21Xorg10:19:581
1146815994035,3cyclictest1169006-21awk08:20:000
114681599401,36cyclictest1231867-21apt-get11:35:130
114682099390,36cyclictest0-21swapper/211:09:002
114682099390,36cyclictest0-21swapper/208:07:592
1146819993932,6cyclictest1240105-21apt-get12:00:121
1146819993932,6cyclictest1240105-21apt-get12:00:111
1146819993932,5cyclictest1169557-21diskstats08:20:151
114681999391,2cyclictest714-21Xorg09:17:591
1146820993835,2cyclictest0-21swapper/209:13:002
1146820993833,4cyclictest0-21swapper/209:04:552
114682099380,36cyclictest0-21swapper/210:33:592
114682099380,36cyclictest0-21swapper/209:00:002
114682099380,35cyclictest0-21swapper/211:24:552
114682099380,35cyclictest0-21swapper/210:54:592
1146819993833,4cyclictest1175419-21kworker/u8:1+flush-179:008:40:581
1146819993831,5cyclictest1162603-21kworker/u8:2+flush-179:008:30:181
1146819993828,8cyclictest1183044-21kworker/u8:0+flush-179:009:30:211
1146815993829,7cyclictest1216058-21kworker/u8:0+flush-179:010:55:230
114682299370,36cyclictest0-21swapper/308:19:593
114682099370,35cyclictest0-21swapper/209:05:582
1146815993734,2cyclictest211irq_work/007:10:590
1146815993732,4cyclictest1197976-21kworker/u8:3+flush-179:010:04:550
1146822993634,1cyclictest0-21swapper/307:29:553
114682299360,35cyclictest0-21swapper/312:39:553
114682299360,35cyclictest0-21swapper/311:52:003
1146820993633,2cyclictest0-21swapper/211:53:592
1146820993633,2cyclictest0-21swapper/210:16:592
1146820993633,2cyclictest0-21swapper/209:49:542
1146820993633,2cyclictest0-21swapper/207:51:592
1146819993633,2cyclictest0-21swapper/110:10:001
1146819993624,11cyclictest1235045-21kworker/u8:1+events_unbound12:10:251
1146815993631,3cyclictest1228456-21perf11:25:000
1146822993533,1cyclictest0-21swapper/309:12:003
114682299350,1cyclictest0-21swapper/311:26:593
1146820993532,2cyclictest0-21swapper/208:19:002
1146820993532,2cyclictest0-21swapper/207:58:592
1146819993532,2cyclictest714-21Xorg11:52:591
1146819993532,2cyclictest57850irq/129-enp2s0-TxRx-010:29:591
1146819993532,2cyclictest57850irq/129-enp2s0-TxRx-010:29:581
1146819993532,2cyclictest0-21swapper/107:24:591
1146822993432,1cyclictest0-21swapper/309:44:003
1146822993432,1cyclictest0-21swapper/309:44:003
1146822993429,4cyclictest1185187-21turbostat09:10:013
1146822993428,5cyclictest1207733-21turbostat10:20:003
1146822993427,5cyclictest1250990-21turbostat12:35:003
1146820993431,2cyclictest0-21swapper/210:44:552
1146820993431,2cyclictest0-21swapper/208:25:592
1146820993431,2cyclictest0-21swapper/207:44:562
1146819993430,3cyclictest714-21Xorg12:29:591
1146819993430,2cyclictest0-21swapper/111:15:121
1146819993426,6cyclictest1191551-21latency_hist09:30:001
114681999340,30cyclictest0-21swapper/108:00:121
1146815993428,5cyclictest1251238-21http12:35:130
1146815993427,5cyclictest1235835-21ntpq11:45:210
1146820993330,2cyclictest0-21swapper/209:32:592
1146819993329,3cyclictest1179504-21hwlatdetect08:50:171
1146819993325,6cyclictest1216058-21kworker/u8:0+flush-179:011:25:211
1146822993129,1cyclictest0-21swapper/312:28:593
1146822993129,1cyclictest0-21swapper/309:33:583
1146822993129,1cyclictest0-21swapper/308:49:553
1146820993128,2cyclictest0-21swapper/209:29:002
1146820993122,7cyclictest0-21swapper/211:43:592
114682099310,29cyclictest0-21swapper/212:10:132
114682099310,23cyclictest0-21swapper/208:38:592
114681999311,29cyclictest0-21swapper/107:15:121
1146822993028,1cyclictest0-21swapper/311:15:593
1146822993028,1cyclictest0-21swapper/308:04:553
1146820993027,2cyclictest0-21swapper/209:24:582
1146820993027,2cyclictest0-21swapper/208:04:002
114682099300,2cyclictest0-21swapper/209:50:012
114682099300,28cyclictest0-21swapper/210:45:152
1146822992927,1cyclictest0-21swapper/312:10:133
1146822992927,1cyclictest0-21swapper/310:45:143
1146822992927,1cyclictest0-21swapper/308:05:133
1146822992926,2cyclictest0-21swapper/309:50:003
114682299290,2cyclictest0-21swapper/311:31:593
114682299290,28cyclictest0-21swapper/311:20:113
114682299290,28cyclictest0-21swapper/308:29:593
114682299290,28cyclictest0-21swapper/307:10:133
114682299290,27cyclictest0-21swapper/310:20:123
1146820992926,2cyclictest0-21swapper/211:55:032
1146820992926,2cyclictest0-21swapper/211:45:592
1146820992926,2cyclictest0-21swapper/207:25:132
1146820992924,4cyclictest0-21swapper/211:37:592
114682099290,2cyclictest0-21swapper/208:45:102
114682099290,27cyclictest0-21swapper/211:15:122
114682099290,27cyclictest0-21swapper/207:49:002
114682099290,27cyclictest0-21swapper/207:35:132
114682099290,27cyclictest0-21swapper/207:10:132
1146822992826,1cyclictest0-21swapper/312:00:133
1146822992826,1cyclictest0-21swapper/312:00:133
1146822992826,1cyclictest0-21swapper/311:55:023
1146822992826,1cyclictest0-21swapper/311:39:003
1146822992826,1cyclictest0-21swapper/311:00:593
1146822992826,1cyclictest0-21swapper/310:55:593
1146822992825,2cyclictest1149884-21turbostat07:20:003
114682299280,2cyclictest0-21swapper/309:35:133
114682299280,27cyclictest1167412-21turbostat08:15:003
114682299280,27cyclictest0-21swapper/308:55:153
114682299280,27cyclictest0-21swapper/307:35:133
114682299280,26cyclictest0-21swapper/309:00:123
114682299280,26cyclictest0-21swapper/308:20:133
1146820992825,2cyclictest0-21swapper/209:18:592
114681999283,4cyclictest1156232-21sshd07:38:531
4577091270,7ptp4l61490irq/134-eno1-TxRx-010:55:003
4577091270,5ptp4l61490irq/134-eno1-TxRx-010:05:003
1146822992725,1cyclictest0-21swapper/308:40:583
1146822992725,1cyclictest0-21swapper/307:55:593
114682299270,26cyclictest0-21swapper/309:22:593
114682299270,26cyclictest0-21swapper/309:15:133
114682299270,1cyclictest0-21swapper/309:50:023
1146820992724,2cyclictest0-21swapper/212:38:592
1146820992724,2cyclictest0-21swapper/210:37:592
114682099270,24cyclictest0-21swapper/210:30:012
114682099270,24cyclictest0-21swapper/210:30:002
114682099270,24cyclictest0-21swapper/210:03:592
114682099270,24cyclictest0-21swapper/209:42:002
114682099270,24cyclictest0-21swapper/209:41:592
4577091260,5ptp4l61490irq/134-eno1-TxRx-012:10:003
4577091260,0ptp4l67-21kworker/3:1+events07:20:133
1146822992624,1cyclictest0-21swapper/307:51:593
1146822992623,2cyclictest1201393-21turbostat10:00:013
114682299260,24cyclictest0-21swapper/308:30:153
1146820992623,2cyclictest0-21swapper/209:55:142
1146820992623,2cyclictest0-21swapper/208:10:142
1146819992621,3cyclictest0-21swapper/108:05:141
4577091250,3ptp4l61490irq/134-eno1-TxRx-012:20:003
4577091250,3ptp4l61490irq/134-eno1-TxRx-010:15:013
4577091250,3ptp4l441ktimers/311:15:003
4577091250,3ptp4l441ktimers/310:10:003
4577091250,3ptp4l441ktimers/308:55:023
1146822992523,1cyclictest0-21swapper/311:08:593
1146822992522,2cyclictest0-21swapper/310:36:593
114682299250,24cyclictest0-21swapper/310:41:003
114682299250,24cyclictest0-21swapper/307:42:593
1146820992521,2cyclictest0-21swapper/207:15:122
114682099250,2cyclictest0-21swapper/211:13:582
114682099250,2cyclictest0-21swapper/209:35:582
4577091240,3ptp4l61490irq/134-eno1-TxRx-011:49:553
4577091240,3ptp4l441ktimers/312:24:573
4577091240,3ptp4l441ktimers/310:29:563
4577091240,3ptp4l441ktimers/310:29:563
1146822992422,1cyclictest0-21swapper/309:26:003
1146822992422,1cyclictest0-21swapper/307:30:593
1146820992421,2cyclictest0-21swapper/211:25:132
1146820992421,2cyclictest0-21swapper/211:04:592
1146820992421,2cyclictest0-21swapper/210:21:592
1146820992421,2cyclictest0-21swapper/210:11:592
1146820992420,2cyclictest0-21swapper/212:16:592
4577091230,3ptp4l61490irq/134-eno1-TxRx-008:39:553
4577091230,2ptp4l441ktimers/307:49:553
1146822992321,1cyclictest0-21swapper/310:32:583
1146820992321,1cyclictest0-21swapper/212:34:592
1146820992320,2cyclictest0-21swapper/212:05:112
1146820992219,2cyclictest0-21swapper/208:40:132
1146820992118,2cyclictest0-21swapper/210:05:132
1146820992018,1cyclictest0-21swapper/207:24:592
1146820991916,2cyclictest0-21swapper/208:51:592
114682099190,1cyclictest0-21swapper/210:59:592
114681999192,16cyclictest1146912-21cat07:10:021
1146820991815,2cyclictest0-21swapper/212:03:592
1146820991815,2cyclictest0-21swapper/212:03:592
1146820991614,1cyclictest0-21swapper/211:33:592
114682099140,11cyclictest0-21swapper/208:34:592
1146820991310,2cyclictest0-21swapper/212:29:592
114682099120,9cyclictest0-21swapper/212:24:552
114682099110,9cyclictest0-21swapper/208:22:282
11468209980,7cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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