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2026-09-06 - 01:31
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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 376 highest latencies:
System rackeslot6.osadl.org (updated Sat Sep 05, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
275085099152138,11cyclictest1213033-21systemd-journal09:40:010
275085299147138,6cyclictest2839583-21latency_hist11:45:001
275085099145117,18cyclictest2784690-21latency_hist08:55:020
275085299139130,5cyclictest2806275-21kworker/u8:0+events_unbound10:05:241
275085299134124,4cyclictest2830261-21kworker/u8:2+events_unbound11:45:021
275085299132120,9cyclictest2800617-21latency_hist09:45:011
275085299131126,4cyclictest2841416-21kworker/u8:0+events_unbound12:05:251
275085299131119,9cyclictest2852574-21latency_hist12:25:021
275085299129119,7cyclictest2818371-21latency_hist10:40:011
275085299126120,4cyclictest2830261-21kworker/u8:2+flush-179:011:50:241
275085299126117,7cyclictest2760512-21kworker/u8:0+events_unbound07:55:161
275085299126117,6cyclictest2753964-21kworker/u8:2+events_unbound07:25:221
275085099122109,9cyclictest2837384-21kworker/u8:1+flush-179:011:45:140
275085299121111,7cyclictest2841416-21kworker/u8:0+events_unbound11:55:201
275085099121111,7cyclictest2760512-21kworker/u8:0+flush-179:007:45:000
275085299120110,8cyclictest2778325-21latency_hist08:35:001
275085099120104,11cyclictest2829775-21apt-get11:15:000
275085299119106,10cyclictest2826577-21kworker/u8:0+flush-179:011:15:171
27508529911899,5cyclictest2818351-21kworker/u8:3+events_unbound10:40:151
275085299118112,4cyclictest2768563-21kworker/u8:2+flush-179:010:25:151
275085099118109,6cyclictest2806275-21kworker/u8:0+flush-179:010:00:250
275085099117108,6cyclictest2849367-21kworker/u8:2+flush-179:012:35:240
275085099117102,10cyclictest2760541-21kworker/u8:3+flush-179:007:50:210
275085299116111,3cyclictest2768563-21kworker/u8:2+events_unbound08:10:231
275085299116110,5cyclictest2826577-21kworker/u8:0+events_unbound11:20:241
275085099114103,8cyclictest2752557-21kworker/u8:0+flush-179:007:25:240
275085299113108,4cyclictest2841416-21kworker/u8:0+events_unbound12:00:271
275085299113100,4cyclictest2824962-21kworker/u8:1+events_unbound11:05:221
275085099113106,5cyclictest1-21systemd08:20:000
275085299111106,3cyclictest2760512-21kworker/u8:0+events_unbound08:00:251
275085299111106,3cyclictest2760512-21kworker/u8:0+events_unbound08:00:251
275085099111105,4cyclictest2752557-21kworker/u8:0+flush-179:007:20:210
275085099111102,6cyclictest2753919-21latency_hist07:20:010
275085299110105,4cyclictest2849367-21kworker/u8:2+flush-179:012:30:251
27508509911099,7cyclictest2775500-21kworker/u8:1+flush-179:008:25:180
27508529910898,4cyclictest2824962-21kworker/u8:1+events_unbound11:00:221
275085299108102,4cyclictest2768563-21kworker/u8:2+events_unbound09:50:251
27508509910891,5cyclictest2749254-21kworker/u8:1+flush-179:007:10:240
275085099108101,5cyclictest2787929-21kworker/u8:0+flush-179:009:10:170
27508529910798,6cyclictest2768563-21kworker/u8:2+events_unbound10:10:181
27508529910798,3cyclictest2811059-21kworker/u8:1+events_unbound10:15:251
275085299107101,4cyclictest2820264-21kworker/u8:2+flush-179:010:45:161
275085299107101,4cyclictest2791041-21kworker/u8:1+events_unbound09:25:171
275085299107101,4cyclictest2753964-21kworker/u8:2+events_unbound07:20:191
27508509910697,5cyclictest2760541-21kworker/u8:3+flush-179:007:55:230
27508509910693,8cyclictest2760541-21kworker/u8:3+flush-179:007:45:210
275085299105101,3cyclictest2826577-21kworker/u8:0+events_unbound11:25:241
275085299105100,3cyclictest2795872-21kworker/u8:3+flush-179:009:55:231
27508529910498,4cyclictest2791041-21kworker/u8:1+flush-179:009:20:181
27508529910493,9cyclictest1213033-21systemd-journal08:10:001
27508529910397,5cyclictest2757602-21kworker/u8:1+flush-179:007:35:011
27508529910395,5cyclictest2830261-21kworker/u8:2+events_unbound11:30:211
27508509910396,5cyclictest2768563-21kworker/u8:2+flush-179:010:25:010
27508509910386,8cyclictest2818351-21kworker/u8:3+events_unbound10:40:250
27508529910295,6cyclictest2850956-21kworker/u8:0+flush-179:012:25:011
27508529910293,6cyclictest2824962-21kworker/u8:1+events_unbound11:10:191
27508509910296,4cyclictest2837384-21kworker/u8:1+events_unbound11:40:010
27508509910294,5cyclictest2847793-21latency_hist12:10:010
27508529910195,4cyclictest2776742-21kworker/u8:3+events_unbound08:35:231
27508509910195,4cyclictest2768563-21kworker/u8:2+events_unbound10:15:010
27508509910192,6cyclictest2824962-21kworker/u8:1+flush-179:011:05:140
27508509910189,8cyclictest2773546-21kworker/u8:0+flush-179:008:20:260
27508509910189,8cyclictest2773546-21kworker/u8:0+flush-179:008:20:250
27508509910092,5cyclictest2811059-21kworker/u8:1+events_unbound10:25:230
27508509910091,6cyclictest2850977-21latency_hist12:20:000
27508509910085,12cyclictest2820264-21kworker/u8:2+flush-179:010:45:120
2750852999995,3cyclictest2849367-21kworker/u8:2+flush-179:012:35:261
2750852999994,4cyclictest2795872-21kworker/u8:3+flush-179:009:45:161
2750852999993,4cyclictest2776742-21kworker/u8:3+events_unbound08:50:241
2750852999991,6cyclictest2749254-21kworker/u8:1+events_unbound07:10:171
2750852999892,4cyclictest2814976-21kworker/u8:0+events_unbound10:35:001
2750852999892,4cyclictest2776742-21kworker/u8:3+events_unbound08:40:211
2750850999890,5cyclictest2768563-21kworker/u8:2+flush-179:008:45:150
2750852999788,7cyclictest2760512-21kworker/u8:0+events_unbound07:40:221
2750850999789,5cyclictest2818372-21apt-get10:40:000
2750850999788,6cyclictest2826577-21kworker/u8:0+flush-179:011:15:210
2750852999689,5cyclictest2811059-21kworker/u8:1+events_unbound10:20:151
2750852999688,6cyclictest2791041-21kworker/u8:1+events_unbound09:30:171
2750850999690,4cyclictest2776742-21kworker/u8:3+flush-179:009:00:230
2750850999586,6cyclictest2757602-21kworker/u8:1+flush-179:007:35:190
2750852999489,4cyclictest2814976-21kworker/u8:0+events_unbound10:50:281
2750852999488,4cyclictest2820264-21kworker/u8:2+events_unbound10:55:201
2750852999484,7cyclictest2752864-21diskstats07:15:151
2750850999487,4cyclictest2768563-21kworker/u8:2+events_unbound09:40:140
2750852999387,4cyclictest2771692-21kworker/u8:3+events_unbound08:15:181
2750852999287,3cyclictest2768563-21kworker/u8:2+events_unbound08:55:201
2750850999287,3cyclictest2811059-21kworker/u8:1+flush-179:010:30:200
2750850999186,4cyclictest2830261-21kworker/u8:2+flush-179:011:50:220
2750850999184,4cyclictest2849367-21kworker/u8:2+events_unbound12:30:260
2750852999085,4cyclictest2775500-21kworker/u8:1+flush-179:008:25:281
2750852999083,5cyclictest2764004-21apt-get07:50:111
2750850999080,7cyclictest2850956-21kworker/u8:0+flush-179:012:25:210
2750850998972,6cyclictest2820264-21kworker/u8:2+events_unbound10:55:230
2750850998880,6cyclictest2833475-21apt-get11:25:110
2750850998680,4cyclictest2791041-21kworker/u8:1+flush-179:009:30:240
2750850998675,8cyclictest2841416-21kworker/u8:0+events_unbound12:05:000
2750850998581,3cyclictest2768563-21kworker/u8:2+flush-179:008:55:210
2750850998576,6cyclictest2830261-21kworker/u8:2+events_unbound11:35:010
2750850998576,6cyclictest2768563-21kworker/u8:2+flush-179:008:30:170
2750852998480,3cyclictest2776742-21kworker/u8:3+events_unbound09:00:281
2750852998479,4cyclictest2768563-21kworker/u8:2+flush-179:009:35:251
2750852998479,4cyclictest2760541-21kworker/u8:3+events_unbound07:45:301
2750852998475,6cyclictest2783104-21latency_hist08:50:021
2750850998468,8cyclictest2768563-21kworker/u8:2+events_unbound09:05:160
2750852998378,4cyclictest2844859-21kworker/u8:1+flush-179:012:10:211
2750850998375,5cyclictest2760512-21kworker/u8:0+flush-179:008:00:230
2750850998375,5cyclictest2760512-21kworker/u8:0+flush-179:008:00:220
2750850998373,3cyclictest2849367-21kworker/u8:2+flush-179:012:15:000
2750850998370,9cyclictest2810694-21diskstats10:15:160
2750850998074,4cyclictest2795872-21kworker/u8:3+flush-179:009:55:270
2750852997974,4cyclictest2849367-21kworker/u8:2+flush-179:012:15:271
2750852997972,5cyclictest2760541-21kworker/u8:3+flush-179:007:40:001
2750850997970,6cyclictest2838256-21apt-get11:40:120
2750852997874,3cyclictest2787929-21kworker/u8:0+flush-179:009:10:151
2750852997873,4cyclictest2830261-21kworker/u8:2+flush-179:011:37:061
2750852997871,5cyclictest1213033-21systemd-journal08:25:001
2750852997871,5cyclictest1213033-21systemd-journal08:25:001
2750852997864,8cyclictest2795872-21kworker/u8:3+events_unbound10:00:151
2750850997862,5cyclictest2757602-21kworker/u8:1+events_unbound07:30:200
2750852997765,8cyclictest2768563-21kworker/u8:2+events_unbound09:15:251
2750852997765,8cyclictest2768563-21kworker/u8:2+events_unbound09:15:241
2750850997772,4cyclictest2776742-21kworker/u8:3+flush-179:008:45:000
2750850997669,5cyclictest2841416-21kworker/u8:0+events_unbound11:55:250
2750850997668,5cyclictest2803788-21latency_hist09:55:010
2750850997168,2cyclictest2768563-21kworker/u8:2+events_unbound08:05:250
2750850997164,5cyclictest2824962-21kworker/u8:1+events_unbound11:00:200
2750852996964,4cyclictest2776742-21kworker/u8:3+events_unbound09:05:231
2750850996962,5cyclictest2791041-21kworker/u8:1+events_unbound09:20:120
2750850996960,6cyclictest1213033-21systemd-journal09:25:170
2750850996861,5cyclictest2768563-21kworker/u8:2+flush-179:010:09:560
2750850996858,4cyclictest2820264-21kworker/u8:2+events_unbound10:50:150
2750850996762,4cyclictest2768563-21kworker/u8:2+flush-179:009:17:050
2750850996762,4cyclictest2768563-21kworker/u8:2+flush-179:009:17:040
2750850996756,8cyclictest2833218-21latency_hist11:25:010
2750850996647,7cyclictest2850956-21kworker/u8:0+flush-179:012:20:240
2750858996462,1cyclictest0-21swapper/309:37:593
2750850995953,4cyclictest2795872-21kworker/u8:3+events_unbound09:45:180
2750850995853,4cyclictest2768563-21kworker/u8:2+flush-179:008:12:030
2750850995551,3cyclictest2768563-21kworker/u8:2+flush-179:008:38:040
2750858995346,5cyclictest2849386-21turbostat12:15:003
4577091510,13ptp4l441ktimers/307:10:013
2750852994838,8cyclictest2750707-21latency_hist07:10:011
275085899440,1cyclictest0-21swapper/309:16:003
275085899440,1cyclictest0-21swapper/309:15:593
275085699430,1cyclictest0-21swapper/209:15:002
2750858994134,5cyclictest2774894-21turbostat08:25:013
2750858994134,5cyclictest2774894-21turbostat08:25:003
2750858994129,11cyclictest2818383-21turbostat10:40:003
2750856994030,8cyclictest0-21swapper/208:31:592
275085899390,4cyclictest2852583-21turbostat12:25:013
2750856993936,2cyclictest0-21swapper/209:40:592
275085699390,36cyclictest0-21swapper/210:19:592
275085699390,36cyclictest0-21swapper/210:13:592
2750858993834,3cyclictest2786299-21turbostat09:04:543
2750858993832,5cyclictest2834818-21turbostat11:30:003
2750858993735,1cyclictest0-21swapper/309:14:593
2750856993735,1cyclictest0-21swapper/209:04:542
2750856993734,2cyclictest0-21swapper/209:45:592
2750856993734,2cyclictest0-21swapper/208:16:592
275085699370,35cyclictest0-21swapper/212:21:582
275085699370,35cyclictest0-21swapper/208:41:592
2750858993634,1cyclictest0-21swapper/308:44:593
2750858993630,4cyclictest2783117-21turbostat08:50:003
275085899360,35cyclictest0-21swapper/310:24:553
275085899360,35cyclictest0-21swapper/308:57:583
275085899360,35cyclictest0-21swapper/308:26:583
2750856993634,1cyclictest0-21swapper/207:45:002
2750856993634,1cyclictest0-21swapper/207:25:002
2750856993633,2cyclictest0-21swapper/211:57:002
2750856993633,2cyclictest0-21swapper/208:36:592
275085699360,1cyclictest0-21swapper/209:35:002
2750858993533,1cyclictest0-21swapper/309:58:593
2750858993529,5cyclictest2762170-21turbostat07:44:593
275085899350,34cyclictest0-21swapper/308:14:593
2750856993526,8cyclictest0-21swapper/212:17:002
2750858993429,4cyclictest2833227-21turbostat11:25:003
275085899340,1cyclictest0-21swapper/309:45:593
2750856993431,2cyclictest0-21swapper/212:15:002
2750856993431,2cyclictest0-21swapper/211:41:592
2750856993431,2cyclictest0-21swapper/209:30:002
2750856993431,2cyclictest0-21swapper/207:16:592
4577091330,2ptp4l441ktimers/312:25:023
2750858993325,7cyclictest0-21swapper/307:34:593
2750856993331,1cyclictest0-21swapper/211:00:002
2750856993330,2cyclictest0-21swapper/208:03:002
2750856993330,2cyclictest0-21swapper/208:02:592
2750856993329,2cyclictest0-21swapper/207:30:592
2750856993325,7cyclictest0-21swapper/210:30:172
275085699330,26cyclictest0-21swapper/208:50:142
2750858993230,1cyclictest0-21swapper/311:59:553
2750858993227,4cyclictest2797432-21turbostat09:35:003
2750858993226,5cyclictest0-21swapper/308:50:153
2750856993230,1cyclictest0-21swapper/210:44:592
2750856993230,1cyclictest0-21swapper/209:20:002
2750856993230,1cyclictest0-21swapper/209:20:002
2750856993229,2cyclictest0-21swapper/212:35:002
2750856993229,2cyclictest0-21swapper/209:37:592
2750856993229,2cyclictest0-21swapper/207:46:592
2750856993223,2cyclictest0-21swapper/212:02:002
275085699320,30cyclictest0-21swapper/208:55:142
275085699320,2cyclictest0-21swapper/212:25:032
2750858993129,1cyclictest0-21swapper/310:13:593
2750858993128,2cyclictest0-21swapper/310:19:593
2750858993126,4cyclictest0-21swapper/310:30:163
2750858993125,5cyclictest0-21swapper/311:35:143
2750858993125,5cyclictest0-21swapper/311:05:143
275085899310,1cyclictest0-21swapper/308:09:553
2750856993123,2cyclictest0-21swapper/211:05:142
2750856993123,2cyclictest0-21swapper/209:07:592
275085699310,27cyclictest0-21swapper/211:35:132
4577091300,7ptp4l61490irq/134-eno1-TxRx-010:10:023
4577091300,7ptp4l441ktimers/307:30:003
4577091300,6ptp4l441ktimers/312:05:003
4577091300,6ptp4l441ktimers/311:05:013
275085899300,1cyclictest0-21swapper/307:39:563
2750856993027,2cyclictest0-21swapper/211:15:032
2750856993027,2cyclictest0-21swapper/207:40:002
2750856993027,2cyclictest0-21swapper/207:25:022
2750856993026,2cyclictest0-21swapper/210:25:122
2750856993026,2cyclictest0-21swapper/210:00:592
2750856993022,2cyclictest0-21swapper/209:55:152
2750856993021,2cyclictest0-21swapper/210:08:592
275085699300,28cyclictest0-21swapper/211:30:132
4577091290,7ptp4l441ktimers/311:20:003
4577091290,6ptp4l441ktimers/311:35:013
4577091290,6ptp4l441ktimers/311:15:003
2750858992927,1cyclictest0-21swapper/309:20:593
2750858992926,2cyclictest0-21swapper/309:25:143
2750858992925,3cyclictest0-21swapper/310:03:593
2750856992927,1cyclictest0-21swapper/210:25:002
2750856992926,2cyclictest0-21swapper/211:25:132
275085699290,27cyclictest0-21swapper/210:46:592
275085699290,27cyclictest0-21swapper/208:11:592
4577091280,7ptp4l61490irq/134-eno1-TxRx-012:39:593
4577091280,6ptp4l441ktimers/310:50:013
2750858992827,1cyclictest0-21swapper/308:15:113
2750858992826,1cyclictest0-21swapper/310:25:123
2750858992825,2cyclictest0-21swapper/312:15:133
2750858992825,2cyclictest0-21swapper/308:35:143
2750858992824,3cyclictest2789486-21turbostat09:10:013
275085899280,27cyclictest0-21swapper/309:40:593
275085899280,26cyclictest0-21swapper/312:05:153
275085899280,26cyclictest0-21swapper/311:45:023
275085899280,26cyclictest0-21swapper/311:40:143
275085899280,26cyclictest0-21swapper/310:40:023
275085899280,21cyclictest0-21swapper/307:15:133
2750856992825,2cyclictest0-21swapper/212:05:142
2750856992825,2cyclictest0-21swapper/211:23:592
2750856992825,2cyclictest0-21swapper/208:24:002
2750856992825,2cyclictest0-21swapper/208:23:592
2750856992824,2cyclictest0-21swapper/208:07:592
275085699280,26cyclictest0-21swapper/211:45:032
4577091270,6ptp4l441ktimers/310:54:563
4577091270,5ptp4l441ktimers/312:34:553
4577091270,5ptp4l441ktimers/307:49:543
2750858992725,1cyclictest0-21swapper/308:01:003
2750858992725,1cyclictest0-21swapper/308:00:593
2750858992723,3cyclictest2755526-21turbostat07:25:003
2750858992719,7cyclictest0-21swapper/308:32:003
2750856992724,2cyclictest0-21swapper/210:51:592
275085699270,25cyclictest0-21swapper/209:53:592
4577091260,5ptp4l61490irq/134-eno1-TxRx-011:54:553
4577091260,5ptp4l61490irq/134-eno1-TxRx-007:54:563
4577091260,5ptp4l61490irq/134-eno1-TxRx-007:14:553
4577091260,4ptp4l441ktimers/310:59:553
2750856992623,2cyclictest0-21swapper/210:36:592
2750856992622,2cyclictest0-21swapper/208:46:592
275085699260,24cyclictest0-21swapper/207:11:592
2750850992620,4cyclictest2750899-21latency_hist07:10:020
4577091250,4ptp4l441ktimers/309:54:553
2750858992523,1cyclictest0-21swapper/307:57:583
2750856992523,1cyclictest0-21swapper/208:29:592
2750856992522,2cyclictest0-21swapper/211:51:582
2750856992522,2cyclictest0-21swapper/207:55:592
2750856992320,2cyclictest0-21swapper/212:37:592
2750856992320,2cyclictest0-21swapper/211:14:002
2750856992220,1cyclictest0-21swapper/207:55:002
2750856992118,2cyclictest0-21swapper/209:24:552
2750856992017,2cyclictest0-21swapper/211:04:542
27508569930,2cyclictest0-21swapper/207:10:022
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