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2026-08-14 - 00:14
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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 Thu Aug 13, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
329685099126110,13cyclictest1213033-21systemd-journal12:05:011
329684899126115,8cyclictest1213033-21systemd-journal09:55:000
329685099123112,8cyclictest3361726-21latency_hist10:30:011
329685099121111,7cyclictest3390927-21latency_hist12:00:001
329685099119113,4cyclictest3392482-21kworker/u8:1+events_unbound12:20:141
329684899118108,8cyclictest3326181-21latency_hist08:40:000
32968509911794,21cyclictest3392482-21kworker/u8:1+flush-179:012:15:001
32968509911794,21cyclictest3392482-21kworker/u8:1+flush-179:012:14:591
329685099117108,7cyclictest3301754-21latency_hist07:25:001
329685099113102,8cyclictest3396175-21/usr/sbin/munin12:15:251
329685099113100,10cyclictest1213033-21systemd-journal07:55:011
329685099111104,5cyclictest3296723-21kworker/u8:1+flush-179:008:05:221
329685099111104,5cyclictest3296723-21kworker/u8:1+flush-179:008:05:211
329685099108101,5cyclictest3366744-21/usr/sbin/munin10:45:241
329685099106100,4cyclictest3397500-21kworker/u8:0+events_unbound12:35:231
32968509910596,6cyclictest3340750-21/usr/sbin/munin09:25:231
32968489910592,10cyclictest1213033-21systemd-journal08:35:010
32968509910494,8cyclictest3318188-21kworker/u8:2+flush-179:008:20:011
32968489910492,9cyclictest3351657-21latency_hist10:00:010
32968489910394,6cyclictest3354134-21kworker/u8:2+flush-179:010:40:260
32968489910390,10cyclictest1213033-21systemd-journal09:30:220
32968509910294,6cyclictest3369938-21latency_hist10:55:011
32968509910195,4cyclictest3384583-21kworker/u8:0+flush-179:011:50:011
32968509910191,8cyclictest3323248-21apt-get08:30:111
3296850999786,8cyclictest3343686-21latency_hist09:35:011
3296850999589,4cyclictest3321438-21kworker/u8:1+events_unbound09:55:181
3296850999582,11cyclictest3321438-21kworker/u8:1+events_unbound09:45:011
3296850999459,33cyclictest714-21Xorg11:37:581
3296850999388,4cyclictest3319838-21kworker/u8:0+events_unbound08:20:361
3296850999284,6cyclictest3354134-21kworker/u8:2+flush-179:010:45:011
3296850999186,4cyclictest3305423-21kworker/u8:3+events_unbound07:36:441
3296848999180,8cyclictest3305442-21apt-get07:35:110
3296850998984,4cyclictest3334178-21kworker/u8:2+events_unbound09:22:501
3296850998984,3cyclictest3321438-21kworker/u8:1+flush-179:009:35:261
3296850998982,5cyclictest3327809-21kworker/u8:3+flush-179:008:50:001
3296850998980,5cyclictest3334178-21kworker/u8:2+flush-179:010:00:021
3296848998878,8cyclictest3381591-21/usr/sbin/munin11:30:160
3296850998782,4cyclictest3374765-21kworker/u8:0+events_unbound11:29:571
3296850998779,6cyclictest3327809-21kworker/u8:3+flush-179:009:15:161
3296850998774,10cyclictest3355097-21latency_hist10:10:011
3296848998778,7cyclictest3321438-21kworker/u8:1+flush-179:009:05:000
3296850998681,4cyclictest3308449-21kworker/u8:0+events_unbound07:51:431
3296848998680,4cyclictest3321438-21kworker/u8:1+flush-179:010:00:260
3296850998580,4cyclictest3402296-21kworker/u8:1+events_unbound12:34:501
3296850998580,4cyclictest3334178-21kworker/u8:2+events_unbound09:14:561
3296850998580,4cyclictest3327809-21kworker/u8:3+events_unbound08:54:521
3296850998574,9cyclictest1213033-21systemd-journal07:30:001
3296850998479,4cyclictest3321438-21kworker/u8:1+events_unbound08:25:431
3296848998477,5cyclictest3321438-21kworker/u8:1+flush-179:008:50:010
3296848998476,6cyclictest3321438-21kworker/u8:1+flush-179:009:40:260
3296850998378,4cyclictest3375764-21kworker/u8:1+events_unbound11:14:501
3296850998378,4cyclictest3295871-21kworker/u8:0+events_unbound07:18:441
3296848998374,7cyclictest3308449-21kworker/u8:0+events_unbound07:55:230
3296848998374,7cyclictest3296723-21kworker/u8:1+flush-179:008:10:210
3296848998374,5cyclictest3327809-21kworker/u8:3+flush-179:009:05:210
3296850998278,3cyclictest3371513-21kworker/u8:1+events_unbound11:03:511
3296850998277,4cyclictest3296723-21kworker/u8:1+events_unbound07:34:431
3296848998274,6cyclictest3295871-21kworker/u8:0+flush-179:007:15:140
3296850998176,4cyclictest3354134-21kworker/u8:2+events_unbound10:35:571
3296850998176,4cyclictest3296723-21kworker/u8:1+events_unbound07:14:431
3296850998175,4cyclictest3296723-21kworker/u8:1+flush-179:008:10:261
3296850998076,3cyclictest3321438-21kworker/u8:1+events_unbound08:40:401
3296850998075,4cyclictest3400704-21kworker/u8:2+events_unbound12:27:501
3296848998074,4cyclictest3359561-21kworker/u8:0+flush-179:010:25:230
3296850997873,4cyclictest3324558-21kworker/u8:0+events_unbound08:35:511
3296850997768,7cyclictest3382942-21latency_hist11:35:011
3296848997768,7cyclictest1213033-21systemd-journal09:20:000
3296848997763,11cyclictest1213033-21systemd-journal11:00:010
3296850997668,5cyclictest3308405-21latency_hist07:45:011
3296850997666,8cyclictest3374765-21kworker/u8:0+flush-179:011:25:001
3296848997669,5cyclictest3392551-21kworker/u8:3+flush-179:012:10:160
3296848997669,5cyclictest3392551-21kworker/u8:3+flush-179:012:10:150
3296848997668,5cyclictest3296723-21kworker/u8:1+flush-179:007:50:260
3296848997569,5cyclictest3321438-21kworker/u8:1+events_unbound08:30:010
3296848997566,7cyclictest3375764-21kworker/u8:1+events_unbound11:10:230
3296848997564,9cyclictest3347136-21apt-get09:45:110
3296850997465,7cyclictest3308947-21diskstats07:45:141
3296850997366,5cyclictest3392482-21kworker/u8:1+flush-179:012:05:161
3296850997365,6cyclictest3296806-21store07:10:031
3296850997365,6cyclictest3296806-21store07:10:021
3296848997366,5cyclictest3373172-21kworker/u8:3+flush-179:011:10:000
3296859997239,29cyclictest0-21swapper/311:49:583
3296850997268,3cyclictest3327809-21kworker/u8:3+events_unbound08:55:031
3296848997164,5cyclictest3308449-21kworker/u8:0+events_unbound08:05:010
3296848997066,2cyclictest3384585-21kworker/u8:3+events_unbound11:45:110
3296848997064,5cyclictest3371513-21kworker/u8:1+flush-179:011:00:200
3296848997060,8cyclictest3296660-21latency_hist07:10:030
3296848997060,8cyclictest3296660-21latency_hist07:10:020
3296848997057,10cyclictest3397805-21apt-get12:20:120
3296850996864,3cyclictest714-21Xorg10:11:591
3296850996862,4cyclictest3354134-21kworker/u8:2+events_unbound10:20:021
3296850996660,4cyclictest3354134-21kworker/u8:2+flush-179:010:15:031
3296859996558,5cyclictest3316635-21turbostat08:10:013
3296859996558,5cyclictest3316635-21turbostat08:10:003
3296848996556,7cyclictest510-21rs:main0
3296850996460,3cyclictest3334178-21kworker/u8:2+events_unbound09:09:501
3296848996457,5cyclictest3397500-21kworker/u8:0+flush-179:012:35:210
3296848996453,8cyclictest3397500-21kworker/u8:0+flush-179:012:30:200
3296848996358,4cyclictest3321438-21kworker/u8:1+events_unbound08:25:010
3296848996357,4cyclictest3392551-21kworker/u8:3+flush-179:012:15:290
3296848996256,5cyclictest3296723-21kworker/u8:1+events_unbound08:05:240
3296848996256,5cyclictest3296723-21kworker/u8:1+events_unbound08:05:230
3296848996256,4cyclictest3384585-21kworker/u8:3+flush-179:011:40:210
3296848996256,4cyclictest3359561-21kworker/u8:0+flush-179:010:20:260
3296848996255,5cyclictest3296723-21kworker/u8:1+flush-179:007:45:150
3296848996251,8cyclictest3318750-21diskstats08:15:140
3296858996158,2cyclictest0-21swapper/211:31:592
3296850996152,7cyclictest1213033-21systemd-journal11:53:491
3296848996157,3cyclictest3354134-21kworker/u8:2+events_unbound10:50:200
3296848996149,9cyclictest1213033-21systemd-journal09:15:000
3296848996054,4cyclictest3321438-21kworker/u8:1+flush-179:010:15:250
3296848996051,7cyclictest510-21rs:main0
3296850995853,4cyclictest3361700-21kworker/u8:1+events_unbound10:30:541
3296848995852,4cyclictest3308328-21unixbench_singl07:40:270
3296848995850,6cyclictest3376565-21apt-get11:15:110
3296848995751,4cyclictest3374765-21kworker/u8:0+flush-179:011:20:220
3296848995747,8cyclictest3326444-21apt-get08:40:120
3296850995651,4cyclictest3384585-21kworker/u8:3+flush-179:011:40:161
3296848995650,4cyclictest3354134-21kworker/u8:2+events_unbound10:35:220
3296848995647,6cyclictest3301150-21kworker/u8:2+flush-179:007:20:220
3296848995645,8cyclictest3334178-21kworker/u8:2+flush-179:009:20:140
3296850995547,6cyclictest3368152-21kworker/u8:3+flush-179:010:55:171
3296848995548,5cyclictest1213033-21systemd-journal11:28:480
3296848995547,6cyclictest3301150-21kworker/u8:2+flush-179:007:25:200
3296850995449,4cyclictest3354134-21kworker/u8:2+events_unbound11:15:021
3296848995446,6cyclictest1213033-21systemd-journal10:34:490
3296848995347,5cyclictest3392482-21kworker/u8:1+events_unbound12:05:260
3296848995341,9cyclictest3390274-21kworker/u8:0+flush-179:012:00:260
3296850995247,4cyclictest3334178-21kworker/u8:2+events_unbound09:51:501
3296850995247,4cyclictest3321438-21kworker/u8:1+events_unbound09:00:271
3296848995244,6cyclictest3354134-21kworker/u8:2+events_unbound10:10:170
4577091510,13ptp4l441ktimers/307:10:013
4577091510,13ptp4l441ktimers/307:10:003
3296858995149,1cyclictest0-21swapper/208:44:582
3296850995044,5cyclictest3373172-21kworker/u8:3+events_unbound11:05:221
3296848994942,5cyclictest3303634-21kworker/u8:0+events_unbound07:30:200
3296848994839,7cyclictest3345305-21latency_hist09:40:010
3296848994838,7cyclictest1213033-21systemd-journal10:05:180
3296858994744,2cyclictest0-21swapper/208:37:592
3296850994642,3cyclictest3296723-21kworker/u8:1+events_unbound08:04:061
3296848994635,9cyclictest3379767-21kworker/u8:2+flush-179:011:35:200
329685999450,43cyclictest3311595-21turbostat07:55:003
3296848994337,4cyclictest3321438-21kworker/u8:1+flush-179:009:25:140
3296859994240,1cyclictest0-21swapper/307:59:563
329685999420,35cyclictest0-21swapper/311:57:593
3296858994239,2cyclictest0-21swapper/209:38:592
3296859994134,6cyclictest0-21swapper/307:22:003
329685999410,1cyclictest0-21swapper/308:32:593
3296850994135,5cyclictest510-21rs:main1
3296848994038,1cyclictest3321438-21kworker/u8:1+events_unbound08:50:170
3296848994037,2cyclictest3390274-21kworker/u8:0+events_unbound11:55:210
329685999390,4cyclictest3376321-21turbostat11:14:593
329685899390,36cyclictest0-21swapper/210:55:592
329684899398,30cyclictest0-21swapper/011:52:590
329685899380,36cyclictest0-21swapper/209:29:592
3296858993734,2cyclictest0-21swapper/212:25:592
3296858993734,2cyclictest0-21swapper/212:22:582
3296858993734,2cyclictest0-21swapper/207:28:592
329685899370,35cyclictest0-21swapper/210:16:002
329685899370,35cyclictest0-21swapper/207:47:002
3296859993633,2cyclictest0-21swapper/309:57:593
3296859993633,2cyclictest0-21swapper/308:42:003
329685999360,35cyclictest0-21swapper/311:17:003
329685999360,35cyclictest0-21swapper/308:46:593
329685999360,35cyclictest0-21swapper/307:38:003
3296858993634,1cyclictest0-21swapper/211:40:002
3296858993633,2cyclictest0-21swapper/210:39:592
3296858993633,2cyclictest0-21swapper/209:48:592
3296858993633,2cyclictest0-21swapper/208:12:592
3296858993633,2cyclictest0-21swapper/208:08:592
3296858993633,2cyclictest0-21swapper/208:08:592
3296858993633,2cyclictest0-21swapper/207:51:592
3296858993633,2cyclictest0-21swapper/207:33:002
3296848993633,2cyclictest0-21swapper/010:49:590
329685999350,34cyclictest0-21swapper/308:59:563
329685999350,1cyclictest0-21swapper/309:24:553
329685999350,1cyclictest0-21swapper/308:26:593
3296858993533,1cyclictest0-21swapper/208:50:012
3296858993532,2cyclictest0-21swapper/210:47:002
3296858993531,2cyclictest0-21swapper/212:05:582
3296858993531,2cyclictest0-21swapper/210:54:552
329685899350,1cyclictest0-21swapper/209:51:592
329685899350,1cyclictest0-21swapper/209:44:552
3296859993432,1cyclictest0-21swapper/312:32:593
3296858993431,2cyclictest0-21swapper/211:26:592
3296858993430,2cyclictest0-21swapper/207:40:592
3296848993429,4cyclictest3397500-21kworker/u8:0+flush-179:012:25:510
3296859993331,1cyclictest0-21swapper/312:24:593
3296859993331,1cyclictest0-21swapper/310:15:003
3296859993330,2cyclictest0-21swapper/308:04:593
3296859993327,5cyclictest0-21swapper/310:55:133
3296858993331,1cyclictest0-21swapper/209:35:002
3296858993331,1cyclictest0-21swapper/208:00:002
329685999320,1cyclictest0-21swapper/312:29:593
329685899320,29cyclictest0-21swapper/209:55:592
3296859993129,1cyclictest0-21swapper/309:08:593
3296859993129,1cyclictest0-21swapper/308:36:593
3296859993129,1cyclictest0-21swapper/307:29:553
3296859993128,2cyclictest0-21swapper/310:32:593
3296858993128,2cyclictest0-21swapper/212:30:592
3296858993128,2cyclictest0-21swapper/211:02:002
4577091300,7ptp4l441ktimers/312:15:003
4577091300,7ptp4l441ktimers/312:14:593
4577091300,7ptp4l441ktimers/312:10:013
4577091300,6ptp4l441ktimers/311:45:003
4577091300,6ptp4l441ktimers/307:20:003
3296859993027,2cyclictest0-21swapper/310:15:143
3296859993027,2cyclictest0-21swapper/310:06:593
3296859993027,2cyclictest0-21swapper/307:43:593
3296859993024,5cyclictest0-21swapper/308:15:123
3296858993027,2cyclictest0-21swapper/212:14:002
3296858993027,2cyclictest0-21swapper/212:14:002
3296858993027,2cyclictest0-21swapper/208:56:592
4577091290,6ptp4l441ktimers/311:25:013
4577091290,5ptp4l441ktimers/309:35:003
3296859992927,1cyclictest0-21swapper/311:27:583
3296859992927,1cyclictest0-21swapper/310:42:593
3296859992927,1cyclictest0-21swapper/307:49:553
3296859992926,2cyclictest0-21swapper/310:00:133
3296859992923,5cyclictest0-21swapper/309:10:123
329685999290,28cyclictest0-21swapper/309:00:133
329685999290,27cyclictest0-21swapper/308:20:133
329685999290,1cyclictest0-21swapper/307:30:143
3296858992926,2cyclictest0-21swapper/211:45:112
3296858992926,2cyclictest0-21swapper/210:20:132
3296858992926,2cyclictest0-21swapper/210:10:592
3296858992926,2cyclictest0-21swapper/210:10:022
3296858992926,2cyclictest0-21swapper/207:20:002
3296858992925,2cyclictest0-21swapper/208:02:002
329685899290,1cyclictest0-21swapper/210:00:022
4577091280,7ptp4l441ktimers/312:19:593
4577091280,7ptp4l441ktimers/310:30:013
4577091280,6ptp4l61490irq/134-eno1-TxRx-010:54:553
4577091280,6ptp4l61490irq/134-eno1-TxRx-010:40:003
4577091280,6ptp4l441ktimers/312:04:553
4577091280,6ptp4l441ktimers/309:54:563
4577091280,6ptp4l441ktimers/309:50:013
4577091280,6ptp4l441ktimers/308:14:563
4577091280,5ptp4l441ktimers/307:15:013
3296859992822,5cyclictest0-21swapper/311:52:593
329685999280,27cyclictest0-21swapper/311:30:013
329685999280,26cyclictest0-21swapper/310:45:133
329685999280,1cyclictest0-21swapper/309:25:133
3296858992826,1cyclictest0-21swapper/211:25:012
3296858992825,2cyclictest0-21swapper/211:08:592
3296858992825,2cyclictest0-21swapper/208:25:592
329685899280,27cyclictest0-21swapper/209:05:122
329685899280,26cyclictest0-21swapper/210:27:582
329685899280,26cyclictest0-21swapper/208:20:142
4577091270,6ptp4l61490irq/134-eno1-TxRx-011:05:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-008:54:563
4577091270,5ptp4l61490irq/134-eno1-TxRx-012:40:003
4577091270,5ptp4l441ktimers/311:10:013
329685999270,26cyclictest0-21swapper/310:24:593
329685999270,26cyclictest0-21swapper/309:36:593
3296858992724,2cyclictest0-21swapper/211:51:582
3296858992724,2cyclictest0-21swapper/208:16:592
4577091260,6ptp4l441ktimers/309:19:563
4577091260,4ptp4l441ktimers/309:44:553
3296858992624,1cyclictest0-21swapper/207:37:592
3296858992623,2cyclictest0-21swapper/212:19:592
3296858992623,2cyclictest0-21swapper/209:23:592
329685899260,2cyclictest0-21swapper/211:15:592
329685899260,2cyclictest0-21swapper/207:20:592
329685899260,24cyclictest0-21swapper/212:04:002
329685899260,24cyclictest0-21swapper/210:34:592
329685899260,24cyclictest0-21swapper/207:12:592
329685899260,1cyclictest0-21swapper/211:44:002
4577091250,4ptp4l61490irq/134-eno1-TxRx-011:39:553
3296858992522,2cyclictest0-21swapper/211:59:002
3296858992522,2cyclictest0-21swapper/210:40:582
3296858992522,2cyclictest0-21swapper/209:15:132
3296858992522,2cyclictest0-21swapper/209:01:002
3296858992421,2cyclictest0-21swapper/211:15:002
3296858992420,2cyclictest0-21swapper/208:53:592
3296858992219,2cyclictest0-21swapper/208:33:002
3296858991815,2cyclictest0-21swapper/212:37:582
3296858991715,1cyclictest0-21swapper/209:15:002
32968589941,2cyclictest0-21swapper/207:10:022
32968589941,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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