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2026-04-06 - 21:44
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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 06, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
279803899109100,6cyclictest2838337-21latency_hist09:15:000
2798043999988,8cyclictest2869353-21latency_hist10:50:001
2798038999789,7cyclictest2832016-21kworker/u8:0+events_unbound10:50:240
2798038999385,5cyclictest2814469-21latency_hist08:00:010
2798038998880,5cyclictest2806218-21kworker/u8:3+flush-179:007:40:220
2798038998880,5cyclictest2806218-21kworker/u8:3+flush-179:007:40:220
2798043998776,8cyclictest2856380-21apt-get10:10:001
2798038998579,4cyclictest2839943-21latency_hist09:20:020
2798038998476,6cyclictest2866174-21latency_hist10:40:000
2798043998376,5cyclictest2819244-21latency_hist08:15:011
2798038998377,4cyclictest2841520-21kworker/u8:1+events_unbound09:30:010
2798038998271,9cyclictest2846577-21apt-get09:40:030
2798038998173,5cyclictest2806218-21kworker/u8:3+flush-179:007:45:220
2798038998071,6cyclictest2858209-21latency_hist10:15:010
2798038998067,9cyclictest266-21systemd-journal08:30:010
2798038997971,5cyclictest2879254-21kworker/u8:0+flush-179:011:30:140
2798038997955,6cyclictest2812878-21latency_hist07:55:010
2798038997865,9cyclictest2825847-21kworker/u8:4+flush-179:008:40:220
2798038997863,11cyclictest2802748-21apt-get07:24:590
2798038997566,5cyclictest2138909-21kworker/u8:4+events_unbound07:25:250
2798038997565,7cyclictest2832016-21kworker/u8:0+flush-179:009:35:210
2798043997261,8cyclictest266-21systemd-journal11:15:011
2798038997265,4cyclictest2872777-21latency_hist11:00:010
2798038997263,7cyclictest2892205-21apt-get12:00:110
2798043997162,6cyclictest2880805-21latency_hist11:25:001
2798038997160,7cyclictest2825847-21kworker/u8:4+flush-179:008:50:210
2798043997058,9cyclictest2902031-21diskstats12:30:141
2798038997059,9cyclictest2887427-21apt-get11:45:110
2798043996961,6cyclictest2877849-21/usr/sbin/munin11:15:231
2798038996964,3cyclictest2876005-21kworker/u8:4+flush-179:012:15:230
2798038996958,8cyclictest2876005-21kworker/u8:4+flush-179:011:50:220
2798038996957,8cyclictest2876005-21kworker/u8:4+events_unbound11:35:150
2798043996756,9cyclictest2803235-21munin-node07:25:111
2798038996661,3cyclictest2850052-21kworker/u8:1+flush-179:009:50:260
2798038996656,8cyclictest2851841-21apt-get09:55:120
2798038996557,5cyclictest2874440-21latency_hist11:05:010
279804499640,62cyclictest0-21swapper/207:43:002
279804499640,62cyclictest0-21swapper/207:42:592
2798038996456,5cyclictest2867802-21kworker/u8:3+flush-179:011:20:150
2798038996355,5cyclictest2876005-21kworker/u8:4+flush-179:012:00:000
2798038996354,7cyclictest2816117-21kworker/u8:0+flush-179:008:20:220
2798038996354,6cyclictest2895118-21latency_hist12:10:010
2798038996354,6cyclictest2799541-21latency_hist07:15:010
2798038996254,6cyclictest2877610-21latency_hist11:15:010
2798038996249,9cyclictest2825602-21kworker/u8:0+events_unbound08:35:180
2798043996053,5cyclictest2806161-21kworker/u8:1+flush-179:007:35:201
2798038996051,6cyclictest2806218-21kworker/u8:3+flush-179:007:35:240
2798038995948,9cyclictest2866437-21apt-get10:40:120
2798038995853,4cyclictest2811338-21kworker/u8:2+flush-179:008:00:150
2798038995852,4cyclictest2854758-21kworker/u8:2+events_unbound10:05:000
2798038995850,5cyclictest2785557-21kworker/u8:2+flush-179:007:30:150
2798043995648,6cyclictest2825847-21kworker/u8:4+flush-179:008:40:001
2798038995648,5cyclictest2811338-21kworker/u8:2+flush-179:008:05:220
2798043995548,5cyclictest2832016-21kworker/u8:0+flush-179:010:14:591
2798043995544,9cyclictest2853448-21apt-get10:00:131
2798038995548,5cyclictest2883964-21kworker/u8:2+events_unbound11:40:120
2798038995448,4cyclictest2825847-21kworker/u8:4+events_unbound09:05:150
2798038995346,5cyclictest2832016-21kworker/u8:0+flush-179:010:45:250
2798043995243,7cyclictest2853192-21latency_hist10:00:001
2798038995246,5cyclictest2825847-21kworker/u8:4+flush-179:008:55:220
2798038995244,6cyclictest2814445-21kworker/u8:3+flush-179:008:30:210
2798038995243,7cyclictest266-21systemd-journal08:15:240
2798043995043,5cyclictest2901485-21latency_hist12:30:011
2798043995041,7cyclictest2820833-21latency_hist08:20:021
2798038995044,4cyclictest2898357-21kworker/u8:1+flush-179:012:25:230
2798038995043,5cyclictest2895153-21kworker/u8:0+flush-179:012:10:220
2798038995043,4cyclictest2832016-21kworker/u8:0+flush-179:010:05:170
2798038995042,5cyclictest2825847-21kworker/u8:4+flush-179:009:25:010
2798038994941,5cyclictest2854758-21kworker/u8:2+events_unbound10:15:140
2798043994844,3cyclictest2825076-21ntpq08:30:211
2798043994841,5cyclictest2822437-21latency_hist08:25:011
2798043994841,5cyclictest266-21systemd-journal12:11:031
2798043994827,19cyclictest2883964-21kworker/u8:2+flush-179:011:40:001
2798038994843,4cyclictest2898357-21kworker/u8:1+flush-179:012:24:550
2798038994842,4cyclictest2828780-21kworker/u8:1+flush-179:008:50:000
4577091470,13ptp4l61490irq/134-eno1-TxRx-007:10:013
4577091470,13ptp4l61490irq/134-eno1-TxRx-007:10:003
2798043994742,4cyclictest2876005-21kworker/u8:4+flush-179:011:55:001
2798038994742,3cyclictest2832016-21kworker/u8:0+flush-179:010:20:110
2798038994740,5cyclictest2854758-21kworker/u8:2+flush-179:010:25:220
2798038994740,5cyclictest2818388-21kworker/u8:1+events_unbound08:10:200
2798043994636,8cyclictest2832016-21kworker/u8:0+flush-179:009:25:231
279804399460,10cyclictest714-21Xorg11:08:581
2798038994641,4cyclictest2832016-21kworker/u8:0+flush-179:009:30:210
279804899450,43cyclictest2827225-21turbostat08:40:003
2798043994536,8cyclictest2898304-21sh12:20:001
2798038994541,3cyclictest2875465-21kworker/u8:1+flush-179:011:05:220
2798038994538,4cyclictest2901463-21kworker/u8:0+events_unbound12:30:240
2798043994440,2cyclictest714-21Xorg10:55:591
2798043994437,5cyclictest2804839-21apt-get07:30:111
2798038994439,4cyclictest2876005-21kworker/u8:4+flush-179:011:25:140
279804899434,33cyclictest67-21kworker/3:1+events08:30:133
2798043994338,4cyclictest2797985-21kworker/u8:0+flush-179:007:15:141
279804399431,40cyclictest1-21systemd12:04:091
2798038994338,3cyclictest2825847-21kworker/u8:4+events_unbound09:05:010
2798038994333,8cyclictest2898357-21kworker/u8:1+flush-179:012:40:000
2798043994238,3cyclictest2830423-21systemd-run08:50:011
2798043994238,3cyclictest2799572-21systemd-run07:15:011
2798043994236,5cyclictest2867802-21kworker/u8:3+events_unbound11:00:231
2798043994233,7cyclictest2882390-21latency_hist11:30:011
279803899420,41cyclictest0-21swapper/009:49:540
279804899410,39cyclictest2846584-21turbostat09:44:563
279804899410,39cyclictest2824032-21turbostat08:30:003
2798043994136,3cyclictest484-21dbus-daemon12:10:011
2798043994136,3cyclictest2861441-21systemd-run10:25:011
2798043994134,5cyclictest2809892-21cat07:45:011
2798043994131,8cyclictest2885843-21apt-get11:40:101
2798043994131,8cyclictest2850024-21perf09:50:001
2798043994129,10cyclictest2899916-21apt12:25:011
2798048994034,5cyclictest2864579-21turbostat10:35:003
2798048994034,4cyclictest2844971-21turbostat09:35:003
279804899400,5cyclictest2836764-21turbostat09:10:003
2798044994034,2cyclictest0-21swapper/208:15:592
2798043994036,3cyclictest2828838-21systemd-run08:45:001
279804899390,4cyclictest2903078-21turbostat12:34:593
279804499390,36cyclictest0-21swapper/212:32:002
279804499390,36cyclictest0-21swapper/211:51:582
2798043993934,3cyclictest2835202-21systemd-run09:05:001
279804899380,36cyclictest0-21swapper/309:35:593
2798044993835,2cyclictest0-21swapper/208:25:592
2798044993834,2cyclictest0-21swapper/212:07:582
2798044993834,2cyclictest0-21swapper/210:56:582
279804499380,3cyclictest0-21swapper/209:44:562
279804499380,29cyclictest0-21swapper/209:35:592
2798043993834,3cyclictest2811338-21kworker/u8:2+flush-179:008:05:001
2798043993834,2cyclictest714-21Xorg09:14:591
2798043993832,5cyclictest2812887-21turbostat07:59:551
2798043993832,4cyclictest2862989-21latency_hist10:30:021
2798043993832,4cyclictest2831971-21latency_hist08:55:011
2798043993831,5cyclictest2864574-21latency_hist10:35:001
2798043993830,7cyclictest2825847-21kworker/u8:4+events_unbound08:55:241
2798043993829,5cyclictest2882649-21apt-get11:30:131
279804399381,35cyclictest2858463-21apt-get10:15:141
2798048993734,2cyclictest0-21swapper/311:02:003
2798048993731,4cyclictest2841536-21turbostat09:25:003
279804899370,35cyclictest0-21swapper/311:33:593
279804499370,35cyclictest0-21swapper/210:02:592
279804499370,35cyclictest0-21swapper/209:19:592
279804499370,2cyclictest0-21swapper/207:13:592
2798043993735,1cyclictest0-21swapper/108:05:591
279804399370,30cyclictest0-21swapper/109:53:001
2798038993729,5cyclictest266-21systemd-journal10:35:000
2798048993634,1cyclictest0-21swapper/310:20:003
2798044993633,2cyclictest0-21swapper/207:54:592
2798044993633,1cyclictest0-21swapper/209:25:002
2798044993632,2cyclictest0-21swapper/211:20:592
2798044993631,2cyclictest0-21swapper/209:56:592
279804499360,2cyclictest0-21swapper/211:33:592
279804499360,2cyclictest0-21swapper/207:47:592
279804399361,34cyclictest2869848-21apt-get10:50:041
2798043993612,10cyclictest714-21Xorg10:39:591
2798048993533,1cyclictest0-21swapper/310:56:583
2798048993533,1cyclictest0-21swapper/308:47:593
2798048993532,2cyclictest0-21swapper/308:15:593
279804899350,1cyclictest0-21swapper/310:03:583
2798044993531,2cyclictest0-21swapper/210:51:592
2798043993531,3cyclictest714-21Xorg11:56:591
2798043993530,4cyclictest2867806-21systemd-run10:45:011
2798043993527,6cyclictest0-21swapper/107:50:131
279804399341,30cyclictest0-21swapper/107:20:121
2798048993331,1cyclictest0-21swapper/312:07:593
2798048993331,1cyclictest0-21swapper/307:54:593
2798044993330,2cyclictest0-21swapper/208:45:592
2798044993330,2cyclictest0-21swapper/207:28:592
2798044993329,2cyclictest0-21swapper/207:57:582
2798044993328,3cyclictest0-21swapper/208:41:592
279804399338,9cyclictest714-21Xorg09:07:591
279804399331,3cyclictest0-21swapper/112:35:151
279804399331,30cyclictest2845220-21apt09:35:131
2798038993329,3cyclictest2876005-21kworker/u8:4+flush-179:011:18:400
2798038993328,4cyclictest2797985-21kworker/u8:0+flush-179:007:15:170
2798048993229,2cyclictest0-21swapper/309:56:593
2798044993228,2cyclictest0-21swapper/212:37:592
2798043993227,4cyclictest0-21swapper/109:43:591
4577091310,5ptp4l441ktimers/311:15:003
2798048993129,1cyclictest0-21swapper/311:20:593
279804899310,30cyclictest67-21kworker/3:1+events11:05:133
2798044993128,2cyclictest0-21swapper/210:22:002
2798044993126,2cyclictest0-21swapper/212:16:002
2798043993129,1cyclictest0-21swapper/107:43:591
2798043993129,1cyclictest0-21swapper/107:43:581
2798043993128,2cyclictest2824027-21cut08:30:011
2798048993028,1cyclictest0-21swapper/310:51:583
2798048993028,1cyclictest0-21swapper/308:52:593
2798048993027,2cyclictest0-21swapper/307:10:123
2798048993025,4cyclictest2801153-21turbostat07:20:013
279804899300,29cyclictest0-21swapper/310:10:013
2798044993027,2cyclictest0-21swapper/212:25:132
2798044993027,2cyclictest0-21swapper/211:35:582
2798044993027,2cyclictest0-21swapper/209:30:032
2798044993027,2cyclictest0-21swapper/207:20:002
279804499300,2cyclictest0-21swapper/210:10:012
279804499300,2cyclictest0-21swapper/208:30:132
279804499300,28cyclictest0-21swapper/209:50:122
279804499300,27cyclictest0-21swapper/210:35:132
279804499300,21cyclictest0-21swapper/209:28:592
279804399308,7cyclictest0-21swapper/109:20:211
2798043993026,2cyclictest714-21Xorg09:17:591
2798048992927,1cyclictest0-21swapper/307:28:593
2798048992926,2cyclictest0-21swapper/312:37:593
2798048992926,2cyclictest0-21swapper/309:50:133
279804899290,27cyclictest0-21swapper/312:25:143
279804899290,27cyclictest0-21swapper/309:45:123
279804899290,27cyclictest0-21swapper/308:55:143
2798044992926,2cyclictest0-21swapper/211:05:132
2798044992925,2cyclictest0-21swapper/212:10:592
2798044992925,2cyclictest0-21swapper/212:01:002
2798044992925,2cyclictest0-21swapper/211:40:592
2798044992925,2cyclictest0-21swapper/208:02:592
279804499290,2cyclictest0-21swapper/207:30:122
279804499290,27cyclictest0-21swapper/211:25:142
279804499290,27cyclictest0-21swapper/211:00:122
279804499290,27cyclictest0-21swapper/210:25:122
279804499290,27cyclictest0-21swapper/208:55:142
279804499290,26cyclictest0-21swapper/209:45:132
279804499290,26cyclictest0-21swapper/208:39:592
4577091280,7ptp4l61490irq/134-eno1-TxRx-011:50:003
4577091280,7ptp4l441ktimers/312:05:003
4577091280,7ptp4l441ktimers/310:50:013
279804899280,2cyclictest0-21swapper/307:45:033
279804899280,27cyclictest0-21swapper/311:25:133
279804899280,27cyclictest0-21swapper/310:35:123
279804899280,27cyclictest0-21swapper/307:55:123
279804899280,27cyclictest0-21swapper/307:30:123
279804899280,26cyclictest0-21swapper/310:25:133
279804899280,26cyclictest0-21swapper/307:35:133
2798044992825,2cyclictest0-21swapper/212:20:132
2798044992824,2cyclictest0-21swapper/211:10:142
2798044992824,2cyclictest0-21swapper/210:40:582
279804499280,26cyclictest0-21swapper/207:35:122
279804399280,27cyclictest0-21swapper/109:30:021
4577091270,7ptp4l441ktimers/309:29:553
4577091270,6ptp4l441ktimers/312:15:013
4577091270,6ptp4l441ktimers/308:15:003
4577091270,5ptp4l441ktimers/311:19:563
2798048992725,1cyclictest0-21swapper/312:20:133
2798048992725,1cyclictest0-21swapper/310:21:593
2798048992725,1cyclictest0-21swapper/308:41:593
279804899270,26cyclictest0-21swapper/312:00:003
279804899270,26cyclictest0-21swapper/311:35:593
2798044992724,2cyclictest0-21swapper/208:09:592
2798044992723,2cyclictest0-21swapper/211:15:592
4577091260,6ptp4l441ktimers/311:55:013
4577091260,5ptp4l441ktimers/310:45:013
4577091260,5ptp4l441ktimers/309:20:013
2798048992624,1cyclictest0-21swapper/312:15:593
2798048992623,2cyclictest0-21swapper/311:40:583
279804899260,24cyclictest0-21swapper/307:20:593
2798044992622,2cyclictest0-21swapper/210:45:592
279804499260,18cyclictest0-21swapper/207:20:592
2798048992523,1cyclictest0-21swapper/308:23:003
2798048992523,1cyclictest0-21swapper/308:06:593
2798048992523,1cyclictest0-21swapper/308:02:593
2798044992522,2cyclictest0-21swapper/212:00:002
2798043992523,1cyclictest0-21swapper/111:49:591
231999250,12rtkit-daemon714-21Xorg07:08:591
231999250,12rtkit-daemon714-21Xorg07:08:591
4577091240,5ptp4l61490irq/134-eno1-TxRx-009:14:563
4577091240,5ptp4l441ktimers/309:05:003
4577091240,4ptp4l61490irq/134-eno1-TxRx-010:09:563
2798044992421,2cyclictest0-21swapper/208:14:002
4577091230,4ptp4l61490irq/134-eno1-TxRx-007:44:553
4577091230,4ptp4l61490irq/134-eno1-TxRx-007:44:553
2798044992219,2cyclictest0-21swapper/210:17:592
2798044992219,2cyclictest0-21swapper/209:14:592
2798044992118,2cyclictest0-21swapper/209:00:122
2798044991815,2cyclictest0-21swapper/208:51:592
2798044991411,2cyclictest0-21swapper/208:21:592
279803899138,3cyclictest2798064-21latency_hist07:10:020
279803899138,3cyclictest2798064-21latency_hist07:10:010
279804499118,2cyclictest0-21swapper/210:31:592
279804499106,2cyclictest0-21swapper/209:07:142
27980449986,2cyclictest0-21swapper/211:45:132
27980449985,2cyclictest0-21swapper/210:07:162
27980449930,2cyclictest0-21swapper/207:10:022
27980449930,2cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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