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2026-04-15 - 07:45
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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 Wed Apr 15, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10396719910379,17cyclictest1110181-21http22:50:010
1039671999284,6cyclictest1139145-21latency_hist00:20:010
1039671999080,7cyclictest1113590-21latency_hist23:00:010
1039673998677,7cyclictest1070128-21http20:45:001
1039671998679,5cyclictest1100598-21latency_hist22:20:010
1039671998477,5cyclictest1049439-21kworker/u8:2+events_unbound19:40:260
1039671997971,6cyclictest1094228-21latency_hist22:00:010
1039671997669,5cyclictest1073528-21latency_hist20:55:010
1039671997362,9cyclictest266-21systemd-journal19:20:000
1039671997163,6cyclictest1118362-21latency_hist23:15:010
1039673996963,4cyclictest1142306-21latency_hist00:30:011
1039671996960,6cyclictest1118701-21kworker/u8:2+flush-179:023:30:000
1039673996861,5cyclictest266-21systemd-journal19:36:301
103967399671,64cyclictest1076718-21cron21:05:011
103967399671,64cyclictest1076718-21cron21:05:011
1039671996760,5cyclictest1052575-21latency_hist19:50:010
1039673996356,5cyclictest1074540-21kworker/u8:0+flush-179:021:05:151
1039671996352,9cyclictest1102450-21apt-get22:25:100
1039679996258,2cyclictest0-21swapper/319:24:593
103967199621,56cyclictest1076728-21munin-run21:05:010
103967199621,56cyclictest1076728-21munin-run21:05:010
1039671996154,5cyclictest1060529-21latency_hist20:15:010
1039671995950,7cyclictest266-21systemd-journal00:35:000
1039671995950,7cyclictest1046463-21apt-get19:30:110
1039671995950,6cyclictest1078308-21latency_hist21:10:010
1039673995849,7cyclictest1110163-21apt-get22:50:001
1039673995844,12cyclictest1110112-21kworker/u8:1+flush-179:000:05:261
1039673995844,12cyclictest1110112-21kworker/u8:1+flush-179:000:05:251
103967199581,17cyclictest1071958-21idleruntime-cro20:50:000
1039673995749,6cyclictest1044620-21latency_hist19:25:011
1039673995747,8cyclictest1042766-21latency_hist19:20:021
103967399570,55cyclictest1118379-21awk23:15:001
1039671995750,6cyclictest1127963-21kworker/u8:2+events_unbound00:00:010
1039671995750,6cyclictest1127963-21kworker/u8:2+events_unbound00:00:010
1039671995747,8cyclictest1132985-21apt-get00:00:120
1039673995650,4cyclictest266-21systemd-journal00:22:181
1039673995649,5cyclictest1039549-21latency_hist19:10:011
1039673995646,8cyclictest1107235-21apt-get22:40:121
103967399561,52cyclictest714-21Xorg21:54:591
103967399561,52cyclictest714-21Xorg21:54:591
103967399561,17cyclictest1071945-21munin-run20:50:001
1039671995646,8cyclictest1081760-21apt-get21:20:100
1039673995544,9cyclictest266-21systemd-journal00:18:121
1039671995537,16cyclictest266-21systemd-journal22:34:110
103967399541,48cyclictest1-21systemd22:34:111
103967399540,51cyclictest714-21Xorg19:42:591
1039673995344,7cyclictest1112254-21apt-get22:55:111
103967199530,52cyclictest0-21swapper/021:54:590
103967199530,52cyclictest0-21swapper/021:54:580
1039673995245,5cyclictest1103780-21latency_hist22:30:011
1039673995219,22cyclictest1065321-21turbostat20:34:551
103967399520,50cyclictest714-21Xorg22:13:591
1039673995145,5cyclictest1066880-21kworker/u8:3+flush-179:020:50:221
1039673995143,6cyclictest1083327-21/usr/sbin/munin21:25:231
1039673995131,18cyclictest1095201-21needreboot22:00:191
1039671995144,5cyclictest1053323-21kworker/u8:2+flush-179:019:55:100
4577091500,13ptp4l441ktimers/319:10:013
1039673995046,3cyclictest1132685-21sendmail00:00:011
1039673995046,3cyclictest1132685-21sendmail00:00:001
1039673995045,3cyclictest266-21systemd-journal00:03:591
1039673995040,8cyclictest1142547-21/usr/sbin/munin00:30:241
1039673994941,6cyclictest1127963-21kworker/u8:2+flush-179:000:15:001
1039673994941,6cyclictest1113842-21/usr/sbin/munin23:00:241
1039671994939,7cyclictest266-21systemd-journal22:50:110
103967199490,12cyclictest0-21swapper/022:13:590
1039673994837,8cyclictest1110163-21apt-get22:50:011
1039673994830,16cyclictest0-21swapper/121:38:591
103967399480,45cyclictest1041175-21awk19:15:001
103967199480,45cyclictest1129527-21ls23:49:590
1039673994739,6cyclictest1063725-21latency_hist20:25:011
103967399471,41cyclictest1102211-21perf22:24:591
1039671994736,9cyclictest266-21systemd-journal23:45:010
1039673994623,20cyclictest266-21systemd-journal19:50:101
103967399461,27cyclictest1144443-21diskstats00:35:141
1039671994630,14cyclictest714-21Xorg21:38:590
1039673994539,5cyclictest1047775-21kworker/u8:1+flush-179:020:00:001
103967399450,42cyclictest1129523-21apt23:49:591
1039671994539,5cyclictest1112031-21kworker/u8:0+flush-179:023:00:160
1039671994539,5cyclictest1036523-21kworker/u8:1+events_unbound19:15:000
1039671994539,4cyclictest1044655-21kworker/u8:3+flush-179:019:35:560
1039673994439,3cyclictest714-21Xorg21:35:001
103967399440,42cyclictest714-21Xorg23:21:591
103967199441,40cyclictest1102205-21awk22:25:000
103967399431,14cyclictest714-21Xorg20:09:581
1039671994340,2cyclictest0-21swapper/021:35:000
1039671994334,7cyclictest1089697-21/usr/sbin/munin21:45:240
1039671994334,6cyclictest1081502-21latency_hist21:20:010
1039671994333,8cyclictest1056009-21/usr/sbin/munin20:00:230
1039673994234,6cyclictest1089457-21latency_hist21:45:011
1039671994233,7cyclictest1110112-21kworker/u8:1+flush-179:023:30:210
1039671994215,23cyclictest0-21swapper/020:30:120
103967199421,39cyclictest1054170-21munin-run19:55:000
103967199420,41cyclictest0-21swapper/023:21:590
103967199420,40cyclictest211irq_work/020:43:590
1039679994139,1cyclictest0-21swapper/323:32:583
1039673994122,16cyclictest1093222-21fschecks_count21:55:161
103967399411,38cyclictest1123160-21perf23:29:591
1039671994137,2cyclictest714-21Xorg20:22:590
1039671994125,14cyclictest1079587-21switchtime21:10:250
103967199411,7cyclictest0-21swapper/022:00:130
103967799400,1cyclictest0-21swapper/222:31:592
1039673994034,4cyclictest1126380-21systemd-run23:40:011
1039673994032,5cyclictest0-21swapper/121:23:591
103967399401,36cyclictest0-21swapper/122:15:141
103967199400,37cyclictest714-21Xorg00:38:590
103967199400,21cyclictest1136008-21cut00:10:020
103967199400,21cyclictest1136008-21cut00:10:010
103967799390,36cyclictest0-21swapper/222:13:592
103967799390,36cyclictest0-21swapper/219:59:552
103967399399,28cyclictest281ktimers/120:04:591
1039673993935,2cyclictest714-21Xorg23:30:591
1039673993925,12cyclictest1080151-21apt-get21:15:151
1039671993934,3cyclictest714-21Xorg23:51:580
1039671993934,3cyclictest714-21Xorg00:13:590
1039671993933,4cyclictest1065311-21latency_hist20:30:010
103967199393,27cyclictest714-21Xorg19:21:590
1039671993926,10cyclictest266-21systemd-journal20:20:010
1039671993925,13cyclictest1108062-21phc2sys22:40:220
103967199390,21cyclictest0-21swapper/023:15:200
103967999380,37cyclictest1113589-21turbostat23:00:003
103967799380,36cyclictest0-21swapper/219:38:592
1039673993834,2cyclictest0-21swapper/123:51:591
1039673993830,7cyclictest1115427-21/usr/sbin/munin23:05:241
103967399381,35cyclictest1059200-21apt-get20:10:141
103967199385,27cyclictest1141389-21grep00:25:170
1039671993833,4cyclictest1107025-21latency_hist22:40:010
103967199380,37cyclictest0-21swapper/020:09:580
1039679993735,1cyclictest0-21swapper/323:07:593
1039679993735,1cyclictest0-21swapper/319:26:593
1039679993732,4cyclictest1137532-21turbostat00:14:593
1039677993735,1cyclictest0-21swapper/219:50:012
1039677993734,2cyclictest0-21swapper/219:51:592
103967799370,35cyclictest0-21swapper/221:48:002
103967799370,35cyclictest0-21swapper/220:10:592
103967799370,35cyclictest0-21swapper/219:27:582
103967399370,35cyclictest0-21swapper/121:00:011
103967399370,2cyclictest1052585-21apt19:50:001
231999360,2rtkit-daemon0-21swapper/120:36:111
103967999360,35cyclictest0-21swapper/323:19:583
1039677993633,2cyclictest0-21swapper/220:28:592
103967799360,35cyclictest0-21swapper/221:55:012
103967799360,35cyclictest0-21swapper/221:55:012
103967799360,1cyclictest0-21swapper/223:15:012
1039673993631,3cyclictest1119056-21hwlatdetect23:15:191
1039673993628,6cyclictest1105605-21/usr/sbin/munin22:35:221
1039673993616,18cyclictest0-21swapper/121:45:591
103967399361,30cyclictest1127967-21unin-run23:45:001
1039671993632,3cyclictest714-21Xorg22:06:580
1039671993626,8cyclictest266-21systemd-journal21:29:560
103967199362,30cyclictest1044878-21apt-get19:25:140
1039679993533,1cyclictest0-21swapper/320:54:003
1039679993533,1cyclictest0-21swapper/319:53:593
103967999350,1cyclictest0-21swapper/323:52:593
1039677993533,1cyclictest0-21swapper/223:40:002
1039677993533,1cyclictest0-21swapper/222:55:012
103967799350,1cyclictest0-21swapper/222:49:592
1039673993525,7cyclictest1-21systemd20:20:001
103967399352,25cyclictest714-21Xorg20:29:591
1039673993515,18cyclictest0-21swapper/119:25:151
103967399350,25cyclictest1047826-21sh19:35:001
1039671993531,2cyclictest714-21Xorg00:23:590
1039679993431,2cyclictest0-21swapper/320:05:593
1039679993431,2cyclictest0-21swapper/319:45:593
1039677993432,1cyclictest0-21swapper/220:35:002
1039677993431,2cyclictest351rcuc/219:42:592
1039677993431,2cyclictest0-21swapper/222:24:552
103967399343,27cyclictest714-21Xorg22:06:591
103967199344,26cyclictest1089397-21head21:40:240
1039679993331,1cyclictest0-21swapper/321:58:593
1039679993331,1cyclictest0-21swapper/321:39:553
1039679993331,1cyclictest0-21swapper/300:31:583
1039679993331,1cyclictest0-21swapper/300:19:543
1039677993330,2cyclictest0-21swapper/222:26:592
1039677993323,6cyclictest0-21swapper/223:25:122
103967399331,29cyclictest0-21swapper/121:11:591
103967199331,28cyclictest1073785-21apt-get20:55:130
1039679993230,1cyclictest0-21swapper/322:29:543
1039677993230,1cyclictest0-21swapper/223:24:592
1039677993228,3cyclictest0-21swapper/221:05:012
1039677993228,3cyclictest0-21swapper/221:05:012
103967799320,2cyclictest0-21swapper/200:34:562
103967199322,27cyclictest2304-21lightdm-gtk-gre23:05:590
103967199322,26cyclictest2304-21lightdm-gtk-gre23:36:580
103967199321,27cyclictest714-21Xorg20:38:590
4577091310,7ptp4l441ktimers/323:15:013
1039679993129,1cyclictest0-21swapper/322:44:593
1039679993129,1cyclictest0-21swapper/322:14:563
1039677993128,2cyclictest0-21swapper/221:22:592
1039677993128,2cyclictest0-21swapper/220:43:592
1039677993128,2cyclictest0-21swapper/200:01:592
1039679993028,1cyclictest0-21swapper/322:22:593
1039677993026,2cyclictest0-21swapper/220:54:552
4577091290,6ptp4l441ktimers/320:45:003
4577091290,6ptp4l441ktimers/320:20:013
1039679992927,1cyclictest0-21swapper/323:49:563
1039679992927,1cyclictest0-21swapper/323:41:003
1039679992927,1cyclictest0-21swapper/322:39:563
1039679992927,1cyclictest0-21swapper/322:05:133
1039679992927,1cyclictest0-21swapper/321:52:593
1039679992927,1cyclictest0-21swapper/321:52:583
1039679992925,3cyclictest1060540-21turbostat20:15:003
103967999290,2cyclictest0-21swapper/321:15:153
103967999290,28cyclictest0-21swapper/300:00:583
103967999290,27cyclictest0-21swapper/322:45:153
103967999290,27cyclictest0-21swapper/320:25:143
1039677992926,2cyclictest0-21swapper/222:06:592
1039677992926,2cyclictest0-21swapper/200:38:592
103967799290,2cyclictest0-21swapper/220:15:592
103967799290,27cyclictest0-21swapper/222:00:132
103967799290,27cyclictest0-21swapper/221:35:132
103967799290,27cyclictest0-21swapper/220:45:022
4577091280,6ptp4l61490irq/134-eno1-TxRx-023:30:013
4577091280,6ptp4l441ktimers/321:45:013
4577091280,6ptp4l441ktimers/321:30:003
4577091280,6ptp4l441ktimers/319:45:013
1039679992826,1cyclictest0-21swapper/300:10:003
1039679992826,1cyclictest0-21swapper/300:09:593
1039679992823,4cyclictest1095838-21turbostat22:05:003
103967999280,27cyclictest0-21swapper/323:35:123
103967999280,27cyclictest0-21swapper/321:23:593
103967999280,26cyclictest0-21swapper/322:50:133
103967999280,26cyclictest0-21swapper/322:30:143
103967999280,26cyclictest0-21swapper/320:30:123
1039677992825,2cyclictest0-21swapper/222:40:142
1039677992825,2cyclictest0-21swapper/221:35:002
1039677992825,2cyclictest0-21swapper/219:30:142
1039677992825,2cyclictest0-21swapper/200:13:002
103967799280,26cyclictest0-21swapper/223:04:592
103967799280,26cyclictest0-21swapper/222:35:132
103967799280,26cyclictest0-21swapper/219:11:592
103967799280,21cyclictest0-21swapper/223:51:592
103967199281,24cyclictest1039741-21latency_hist19:10:020
4577091270,6ptp4l61490irq/134-eno1-TxRx-020:00:003
4577091270,5ptp4l441ktimers/321:14:553
4577091270,5ptp4l441ktimers/319:15:003
1039679992725,1cyclictest0-21swapper/300:20:133
103967999270,26cyclictest0-21swapper/320:35:143
103967999270,26cyclictest0-21swapper/319:17:593
103967999270,1cyclictest0-21swapper/321:05:153
1039677992724,1cyclictest0-21swapper/220:09:582
103967799270,2cyclictest0-21swapper/200:07:592
103967799270,2cyclictest0-21swapper/200:07:592
103967799270,1cyclictest0-21swapper/220:22:592
103967799270,1cyclictest0-21swapper/200:15:142
4577091260,6ptp4l61490irq/134-eno1-TxRx-000:40:003
4577091260,5ptp4l61490irq/134-eno1-TxRx-022:20:003
4577091260,5ptp4l61490irq/134-eno1-TxRx-021:00:013
4577091260,5ptp4l441ktimers/323:59:553
4577091260,5ptp4l441ktimers/323:59:553
4577091260,4ptp4l61490irq/134-eno1-TxRx-021:04:563
4577091260,4ptp4l61490irq/134-eno1-TxRx-021:04:563
4577091260,4ptp4l441ktimers/323:05:003
4577091260,4ptp4l441ktimers/320:49:553
4577091260,4ptp4l441ktimers/319:34:543
4577091260,4ptp4l441ktimers/300:29:563
1039679992624,1cyclictest0-21swapper/320:00:133
103967999260,2cyclictest0-21swapper/321:45:593
1039677992624,1cyclictest0-21swapper/222:15:142
1039677992623,2cyclictest0-21swapper/223:46:592
103967799260,24cyclictest0-21swapper/223:58:592
103967799260,24cyclictest0-21swapper/223:58:592
103967799260,24cyclictest0-21swapper/219:22:592
4577091250,4ptp4l61490irq/134-eno1-TxRx-023:24:553
4577091250,4ptp4l61490irq/134-eno1-TxRx-019:39:553
4577091250,4ptp4l441ktimers/321:34:553
1039677992523,1cyclictest0-21swapper/221:30:002
103967799250,2cyclictest0-21swapper/221:18:592
103967799250,2cyclictest0-21swapper/221:11:592
1039677992422,1cyclictest0-21swapper/223:35:012
4577091230,4ptp4l441ktimers/320:25:003
1039677992321,1cyclictest0-21swapper/223:44:592
1039677992321,1cyclictest0-21swapper/223:09:582
1039677992119,1cyclictest0-21swapper/221:09:592
1039677992117,2cyclictest0-21swapper/219:16:002
1039677992018,1cyclictest0-21swapper/222:55:592
1039677992018,1cyclictest0-21swapper/220:55:132
1039677992017,2cyclictest0-21swapper/221:41:592
1039677991916,2cyclictest351rcuc/223:15:272
1039677991916,2cyclictest0-21swapper/200:23:592
1039677991815,2cyclictest351rcuc/221:58:412
1039677991815,2cyclictest351rcuc/220:37:052
1039677991815,2cyclictest351rcuc/220:00:152
1039677991714,2cyclictest351rcuc/200:29:172
10396779940,2cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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