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2026-09-02 - 23:00
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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 Sep 02, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
296062899126111,11cyclictest3017149-21apt-get10:05:001
296062899125112,9cyclictest2976812-21latency_hist08:00:011
296062899115105,8cyclictest3051092-21latency_hist11:50:011
296062899115105,7cyclictest3046311-21latency_hist11:35:001
296062799113102,8cyclictest3023766-21latency_hist10:25:010
296062799112101,8cyclictest2959041-21kworker/u8:2+flush-179:007:20:220
296062799111102,7cyclictest2984771-21latency_hist08:25:010
29606289910494,8cyclictest3044474-21apt-get11:30:001
29606289910492,9cyclictest3024022-21apt-get10:25:121
29606279910497,5cyclictest3007830-21apt-get09:35:120
29606289910391,9cyclictest510-21rs:main1
2960627991030,98cyclictest1-21systemd12:05:010
29606289910294,6cyclictest3051127-21kworker/u8:0+flush-179:012:00:191
29606279910295,5cyclictest3026987-21kworker/u8:2+flush-179:010:45:000
29606279910293,7cyclictest2979988-21latency_hist08:10:020
29606279910293,7cyclictest2979988-21latency_hist08:10:010
29606289910192,7cyclictest3047955-21kworker/u8:1+events_unbound12:34:591
29606279910192,7cyclictest3009229-21kworker/u8:3+flush-179:009:45:170
29606289910089,8cyclictest3062501-21latency_hist12:25:011
2960627999991,7cyclictest2973609-21kworker/u8:1+flush-179:008:00:160
2960627999892,4cyclictest3047955-21kworker/u8:1+flush-179:012:10:190
2960627999790,4cyclictest2997736-21kworker/u8:2+flush-179:009:10:210
2960628999686,7cyclictest3036507-21latency_hist11:05:011
2960628999685,8cyclictest3064088-21latency_hist12:30:011
2960627999686,7cyclictest3039662-21kworker/u8:0+flush-179:011:25:220
2960627999587,6cyclictest2967196-21kworker/u8:3+flush-179:007:30:160
2960627999587,5cyclictest2959041-21kworker/u8:2+flush-179:007:40:260
2960627999584,8cyclictest3023801-21kworker/u8:3+flush-179:010:50:220
2960632999487,5cyclictest2989808-21turbostat08:40:003
2960627999485,7cyclictest3051127-21kworker/u8:0+flush-179:012:20:210
2960628999383,8cyclictest3041544-21apt-get11:20:121
2960628999281,9cyclictest2978656-21apt-get08:05:121
2960628999281,9cyclictest2978656-21apt-get08:05:121
2960627999084,4cyclictest2967196-21kworker/u8:3+flush-179:007:45:270
2960627999083,5cyclictest2965384-21apt-get07:25:030
2960627998982,5cyclictest3044440-21kworker/u8:2+flush-179:011:45:140
2960628998879,7cyclictest3012354-21latency_hist09:50:001
2960628998780,5cyclictest2959041-21kworker/u8:2+events_unbound07:25:011
2960627998678,6cyclictest2967196-21kworker/u8:3+flush-179:007:35:220
2960627998676,8cyclictest3030172-21kworker/u8:1+flush-179:010:55:230
2960627998578,5cyclictest3047955-21kworker/u8:1+flush-179:012:05:220
2960627998472,9cyclictest2986334-21kworker/u8:0+flush-179:009:00:150
2960627998378,4cyclictest3044440-21kworker/u8:2+flush-179:011:39:540
2960627998372,9cyclictest3019239-21apt-get10:10:110
2960628998172,7cyclictest3013346-21kworker/u8:0+flush-179:010:10:001
2960628998152,18cyclictest3038092-21latency_hist11:10:011
2960627998175,5cyclictest2986334-21kworker/u8:0+flush-179:008:40:220
2960628998071,6cyclictest3013346-21kworker/u8:0+flush-179:009:55:181
2960627998074,4cyclictest2960583-21kworker/u8:1+flush-179:007:10:220
2960627997972,5cyclictest3022417-21kworker/u8:1+events_unbound10:25:140
2960627997971,7cyclictest3026987-21kworker/u8:2+flush-179:010:45:210
2960627997968,9cyclictest2962430-21apt-get07:15:100
2960627997968,7cyclictest2981552-21kworker/u8:3+flush-179:008:35:230
2960628997872,4cyclictest2959041-21kworker/u8:2+flush-179:007:10:201
2960627997770,5cyclictest2977823-21kworker/u8:2+flush-179:008:25:230
2960627997768,7cyclictest2972024-21kworker/u8:0+flush-179:007:50:210
2960627997767,7cyclictest2996159-21latency_hist09:00:010
2960627997766,8cyclictest3010769-21latency_hist09:45:000
2960628997668,6cyclictest2981552-21kworker/u8:3+events_unbound08:20:151
296062799760,72cyclictest2992886-21unixbench_multi08:45:240
2960628997568,5cyclictest2973609-21kworker/u8:1+flush-179:008:00:201
2960628997565,7cyclictest2969349-21diskstats07:35:161
2960627997569,5cyclictest2986334-21kworker/u8:0+flush-179:009:25:210
2960628997466,6cyclictest3051127-21kworker/u8:0+flush-179:011:50:211
2960628997466,6cyclictest1213033-21systemd-journal08:17:211
2960627997467,5cyclictest2981552-21kworker/u8:3+flush-179:008:30:210
2960627997269,2cyclictest3030172-21kworker/u8:1+events_unbound11:00:130
2960627997266,4cyclictest3023801-21kworker/u8:3+flush-179:010:30:160
2960628997164,5cyclictest2960583-21kworker/u8:1+flush-179:007:15:151
2960628997160,9cyclictest2986375-21apt-get08:30:001
2960628997065,3cyclictest3047955-21kworker/u8:1+events_unbound12:10:141
2960628997063,4cyclictest2986334-21kworker/u8:0+flush-179:009:20:221
2960628997061,7cyclictest3047955-21kworker/u8:1+flush-179:012:19:591
2960628997057,10cyclictest2986334-21kworker/u8:0+flush-179:009:25:231
2960627997060,7cyclictest3018985-21latency_hist10:10:000
2960628996959,8cyclictest2986334-21kworker/u8:0+flush-179:009:00:261
2960627996961,6cyclictest3042853-21kworker/u8:3+events_unbound11:40:240
2960627996961,6cyclictest3042853-21kworker/u8:3+events_unbound11:40:240
2960627996959,5cyclictest3042853-21kworker/u8:3+events_unbound11:30:130
2960628996857,8cyclictest2959041-21kworker/u8:2+flush-179:007:40:221
2960627996862,4cyclictest3051127-21kworker/u8:0+events_unbound11:50:230
2960628996761,5cyclictest2999387-21kworker/u8:1+events_unbound09:10:011
2960628996760,5cyclictest3009229-21kworker/u8:3+flush-179:009:40:171
2960628996759,6cyclictest1213033-21systemd-journal10:14:021
2960628996756,9cyclictest3039934-21apt-get11:15:131
2960628996756,9cyclictest3039934-21apt-get11:15:131
2960628996756,8cyclictest3051127-21kworker/u8:0+events_unbound11:55:251
2960628996756,8cyclictest3047955-21kworker/u8:1+flush-179:012:35:161
2960628996756,8cyclictest3047955-21kworker/u8:1+events_unbound12:05:141
2960628996745,19cyclictest2991654-21apt-get08:45:101
2960627996761,5cyclictest1213033-21systemd-journal11:18:210
2960627996761,5cyclictest1213033-21systemd-journal11:18:210
2960628996654,10cyclictest3018442-21kworker/u8:2+flush-179:010:20:011
2960627996658,5cyclictest2972024-21kworker/u8:0+events_unbound07:55:230
2960628996558,5cyclictest2972024-21kworker/u8:0+events_unbound07:50:151
2960628996556,7cyclictest3048175-21apt-get11:40:121
2960628996556,7cyclictest3048175-21apt-get11:40:121
2960628996456,6cyclictest2967474-21apt-get07:30:121
2960628996445,17cyclictest3039662-21kworker/u8:0+flush-179:011:35:111
2960628996354,7cyclictest3027180-21/usr/sbin/munin10:35:161
2960628996354,7cyclictest2991400-21latency_hist08:45:011
2960628996352,8cyclictest1213033-21systemd-journal07:45:211
2960628996349,12cyclictest3013975-21kworker/u8:1+flush-179:009:55:011
2960627996357,4cyclictest3013346-21kworker/u8:0+flush-179:010:00:210
2960628996257,4cyclictest3030172-21kworker/u8:1+flush-179:011:10:261
2960627996258,2cyclictest3051127-21kworker/u8:0+events_unbound11:55:230
2960627996256,4cyclictest3030172-21kworker/u8:1+flush-179:011:10:170
2960628996152,7cyclictest3013346-21kworker/u8:0+flush-179:010:20:221
2960627996150,10cyclictest2981552-21kworker/u8:3+events_unbound08:15:010
2960627995953,4cyclictest3047955-21kworker/u8:1+flush-179:012:35:250
2960627995953,4cyclictest3005712-21kworker/u8:2+events_unbound09:50:130
2960627995850,6cyclictest3047955-21kworker/u8:1+events_unbound12:25:160
2960627995849,6cyclictest3013346-21kworker/u8:0+flush-179:009:55:210
2960628995748,7cyclictest2997736-21kworker/u8:2+flush-179:009:15:011
2960627995751,5cyclictest2997736-21kworker/u8:2+flush-179:009:15:130
2960627995748,6cyclictest3030172-21kworker/u8:1+events_unbound11:05:130
2960627995748,6cyclictest2997736-21kworker/u8:2+flush-179:009:20:200
2960628995650,4cyclictest2986334-21kworker/u8:0+flush-179:009:30:251
2960628995449,4cyclictest3004118-21kworker/u8:1+events_unbound09:40:001
2960628995447,6cyclictest2997736-21kworker/u8:2+flush-179:009:15:151
2960627995447,5cyclictest3047955-21kworker/u8:1+flush-179:012:19:550
2960628995345,6cyclictest3033241-21kworker/u8:0+events_unbound10:55:001
2960627995348,4cyclictest3013346-21kworker/u8:0+flush-179:010:19:550
2960627995347,5cyclictest2986334-21kworker/u8:0+flush-179:008:50:200
2960627995347,4cyclictest3047955-21kworker/u8:1+events_unbound12:30:160
2960627995344,7cyclictest3042876-21latency_hist11:25:010
2960628995246,5cyclictest2981552-21kworker/u8:3+flush-179:008:35:271
2960627995041,7cyclictest3007317-21latency_hist09:35:020
4577091490,13ptp4l441ktimers/307:10:013
2960628994942,4cyclictest3023801-21kworker/u8:3+events_unbound10:30:241
2960627994843,4cyclictest2986334-21kworker/u8:0+flush-179:009:05:150
2960627994843,4cyclictest2981552-21kworker/u8:3+flush-179:008:15:250
2960628994739,6cyclictest2988441-21kworker/u8:1+events_unbound08:55:161
2960628994737,8cyclictest3026987-21kworker/u8:2+events_unbound10:40:191
2960627994741,5cyclictest3026920-21kworker/u8:1+flush-179:010:35:170
2960631994440,2cyclictest0-21swapper/207:38:582
296063199440,42cyclictest0-21swapper/208:19:592
296062899430,28cyclictest3033565-21apt-get10:55:141
4577091420,5ptp4l431rcuc/311:25:003
2960632993934,4cyclictest2980007-21turbostat08:10:013
2960632993934,4cyclictest2980007-21turbostat08:10:003
2960632993932,6cyclictest3026952-21turbostat10:35:003
296063299390,38cyclictest2994581-21turbostat08:55:003
2960628993930,7cyclictest3030680-21diskstats10:45:151
296063299380,37cyclictest3038106-21turbostat11:10:003
2960628993822,14cyclictest0-21swapper/108:30:121
2960632993735,1cyclictest0-21swapper/310:59:553
2960632993731,5cyclictest3004147-21turbostat09:24:593
2960632993730,6cyclictest2996172-21turbostat09:00:003
2960631993734,2cyclictest0-21swapper/211:30:002
2960631993734,2cyclictest0-21swapper/209:18:592
296063199370,35cyclictest0-21swapper/209:30:002
2960628993728,8cyclictest2977823-21kworker/u8:2+events_unbound08:10:251
2960632993631,4cyclictest3051099-21turbostat11:50:003
296063299360,35cyclictest0-21swapper/309:19:563
2960631993633,2cyclictest0-21swapper/209:35:592
2960631993633,2cyclictest0-21swapper/208:46:002
2960631993632,2cyclictest0-21swapper/210:50:592
2960631993632,2cyclictest0-21swapper/208:36:582
296063199360,28cyclictest0-21swapper/209:48:592
2960628993631,4cyclictest2986334-21kworker/u8:0+events_unbound08:50:241
2960632993533,1cyclictest0-21swapper/310:28:593
2960632993533,1cyclictest0-21swapper/309:02:003
2960631993532,2cyclictest0-21swapper/210:47:592
2960632993432,1cyclictest0-21swapper/310:20:593
2960632993432,1cyclictest0-21swapper/307:48:593
2960631993432,1cyclictest0-21swapper/212:14:582
2960631993431,2cyclictest0-21swapper/209:50:592
2960632993331,1cyclictest0-21swapper/311:43:593
2960632993331,1cyclictest0-21swapper/311:43:593
2960632993327,5cyclictest2975220-21turbostat07:54:593
2960632993327,4cyclictest3065680-21turbostat12:35:003
2960632993327,4cyclictest2986376-21turbostat08:30:013
296063299330,1cyclictest0-21swapper/307:38:593
2960631993330,2cyclictest0-21swapper/210:32:592
2960632993227,4cyclictest2993003-21turbostat08:50:003
2960632993224,3cyclictest67-21kworker/3:1+events07:25:013
2960631993229,2cyclictest0-21swapper/211:12:592
2960631993229,2cyclictest0-21swapper/210:19:552
2960631993225,6cyclictest0-21swapper/209:20:592
2960631993225,6cyclictest0-21swapper/208:30:132
296063199320,26cyclictest0-21swapper/211:15:152
296063199320,26cyclictest0-21swapper/211:15:152
4577091310,8ptp4l441ktimers/309:15:003
4577091310,7ptp4l61490irq/134-eno1-TxRx-012:40:013
2960632993129,1cyclictest0-21swapper/308:22:593
296063299310,30cyclictest0-21swapper/310:40:593
2960631993128,2cyclictest0-21swapper/211:38:002
296063199310,2cyclictest0-21swapper/209:30:132
296063199310,27cyclictest0-21swapper/212:35:132
4577091300,7ptp4l441ktimers/310:10:003
2960632993028,1cyclictest0-21swapper/312:20:583
2960632993028,1cyclictest0-21swapper/307:12:003
2960632993027,2cyclictest0-21swapper/311:57:593
2960632993027,2cyclictest0-21swapper/310:10:123
2960632993026,2cyclictest0-21swapper/309:31:003
2960632993024,5cyclictest3012372-21turbostat09:50:013
296063299300,28cyclictest0-21swapper/307:25:013
2960631993027,2cyclictest0-21swapper/211:54:002
2960631993027,2cyclictest0-21swapper/210:00:122
2960631993027,2cyclictest0-21swapper/207:46:002
2960631993026,2cyclictest0-21swapper/211:20:592
296063199300,2cyclictest0-21swapper/210:57:592
296063199300,28cyclictest0-21swapper/210:38:592
296063199300,28cyclictest0-21swapper/208:25:152
296063199300,1cyclictest0-21swapper/212:15:132
4577091290,7ptp4l61490irq/134-eno1-TxRx-007:45:003
4577091290,7ptp4l441ktimers/311:40:003
4577091290,6ptp4l441ktimers/312:30:013
4577091290,6ptp4l441ktimers/308:15:013
2960632992927,1cyclictest0-21swapper/312:00:033
2960632992926,2cyclictest0-21swapper/310:01:593
2960632992926,2cyclictest0-21swapper/308:30:013
2960632992925,2cyclictest0-21swapper/310:35:133
296063299290,27cyclictest0-21swapper/311:30:013
296063299290,27cyclictest0-21swapper/311:10:133
2960631992926,2cyclictest0-21swapper/212:20:132
2960631992926,2cyclictest0-21swapper/212:00:022
2960631992926,2cyclictest0-21swapper/211:30:122
2960631992926,2cyclictest0-21swapper/209:00:142
2960631992926,2cyclictest0-21swapper/208:05:132
2960631992926,2cyclictest0-21swapper/208:05:122
2960631992926,2cyclictest0-21swapper/207:23:582
296063199290,27cyclictest0-21swapper/212:00:012
296063199290,27cyclictest0-21swapper/209:40:132
296063199290,27cyclictest0-21swapper/208:55:132
4577091280,6ptp4l61490irq/134-eno1-TxRx-011:34:553
4577091280,6ptp4l61490irq/134-eno1-TxRx-009:45:003
4577091280,6ptp4l441ktimers/310:20:003
4577091280,6ptp4l441ktimers/309:40:003
4577091280,6ptp4l441ktimers/308:45:013
296063299280,27cyclictest0-21swapper/312:05:123
296063299280,27cyclictest0-21swapper/309:51:583
296063299280,26cyclictest0-21swapper/311:50:133
296063299280,26cyclictest0-21swapper/309:05:123
2960631992824,2cyclictest0-21swapper/207:59:592
296063199280,26cyclictest0-21swapper/208:40:122
296063199280,26cyclictest0-21swapper/207:30:142
4577091270,6ptp4l441ktimers/310:49:563
4577091270,5ptp4l441ktimers/308:20:003
4577091270,5ptp4l441ktimers/307:19:553
2960632992725,1cyclictest0-21swapper/312:16:593
2960632992725,1cyclictest0-21swapper/310:50:133
2960632992724,2cyclictest0-21swapper/311:00:123
296063299270,26cyclictest0-21swapper/312:11:593
296063299270,26cyclictest0-21swapper/309:26:593
2960631992723,2cyclictest0-21swapper/208:12:002
2960631992723,2cyclictest0-21swapper/207:15:002
296063199270,26cyclictest0-21swapper/210:25:142
296063199270,25cyclictest0-21swapper/212:26:582
296063199270,25cyclictest0-21swapper/211:01:592
296063199270,25cyclictest0-21swapper/207:52:592
4577091260,5ptp4l61490irq/134-eno1-TxRx-011:20:013
4577091260,5ptp4l61490irq/134-eno1-TxRx-011:20:013
4577091260,5ptp4l61490irq/134-eno1-TxRx-008:00:013
4577091260,5ptp4l441ktimers/309:59:553
4577091260,4ptp4l441ktimers/307:35:003
2960631992623,2cyclictest0-21swapper/212:30:592
2960631992623,2cyclictest0-21swapper/211:41:592
2960631992623,2cyclictest0-21swapper/211:41:592
2960631992623,2cyclictest0-21swapper/209:07:592
2960631992623,2cyclictest0-21swapper/207:26:002
2960631992623,1cyclictest0-21swapper/210:20:122
2960631992622,2cyclictest0-21swapper/212:06:592
2960631992622,2cyclictest0-21swapper/210:15:002
296063199260,2cyclictest0-21swapper/209:10:122
296063199260,24cyclictest0-21swapper/208:02:592
296063199260,1cyclictest0-21swapper/210:05:592
4577091250,4ptp4l441ktimers/308:05:023
2960631992522,2cyclictest0-21swapper/211:09:592
2960631992522,2cyclictest0-21swapper/207:17:592
296063199250,2cyclictest0-21swapper/211:46:592
2960628992419,4cyclictest0-21swapper/107:10:021
2960631992320,2cyclictest0-21swapper/210:43:002
2960631992220,1cyclictest0-21swapper/210:00:002
2960631992117,2cyclictest0-21swapper/208:20:582
2960631992117,2cyclictest0-21swapper/207:41:002
2960631991916,2cyclictest0-21swapper/208:51:582
296062799140,1cyclictest0-21swapper/007:10:020
29606319930,2cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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