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2026-05-25 - 10:18
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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 Mon May 25, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
277726599118107,5cyclictest2817583-21kworker/u8:0+events_unbound21:55:240
277726599117108,7cyclictest2855991-21kworker/u8:1+flush-179:023:20:020
277726599115107,6cyclictest2817583-21kworker/u8:0+events_unbound22:10:000
277726799109104,4cyclictest2817583-21kworker/u8:0+events_unbound22:00:241
27772679910893,14cyclictest2846502-21kworker/u8:4+events_unbound22:45:261
277726799107101,4cyclictest2788312-21latency_hist19:45:011
27772659910799,6cyclictest2817583-21kworker/u8:0+events_unbound21:40:000
27772659910393,5cyclictest2788290-21kworker/u8:0+events_unbound19:50:240
27772659910295,5cyclictest2799725-21kworker/u8:2+events_unbound21:15:020
27772679910197,3cyclictest2807772-21kworker/u8:3+events_unbound20:45:251
27772659910088,5cyclictest2855991-21kworker/u8:1+events_unbound23:30:010
2777267999994,4cyclictest2851217-21kworker/u8:2+events_unbound23:10:231
2777267999990,7cyclictest2844852-21kworker/u8:1+flush-179:022:40:001
2777265999892,5cyclictest2827342-21kworker/u8:3+events_unbound22:10:250
2777265999889,4cyclictest2799725-21kworker/u8:2+events_unbound20:30:240
2777265999787,7cyclictest2820987-21latency_hist21:25:020
2777267999691,4cyclictest2799725-21kworker/u8:2+flush-179:021:10:251
2777265999690,4cyclictest2870064-21kworker/u8:0+flush-179:000:04:010
2777267999585,7cyclictest2812771-21latency_hist21:00:011
2777267999583,4cyclictest2877344-21kworker/u8:3+events_unbound00:25:131
2777265999589,5cyclictest2807707-21kworker/u8:0+events_unbound21:00:250
2777265999589,4cyclictest2791521-21kworker/u8:3+flush-179:020:10:200
2777265999587,6cyclictest2791521-21kworker/u8:3+events_unbound19:55:250
2777265999583,5cyclictest2877344-21kworker/u8:3+events_unbound00:25:110
2777265999582,4cyclictest2774095-21kworker/u8:0+events_unbound19:10:190
2777267999489,4cyclictest2799725-21kworker/u8:2+events_unbound20:50:241
2777265999487,5cyclictest2817583-21kworker/u8:0+events_unbound21:50:150
2777267999386,5cyclictest2859508-21kworker/u8:3+events_unbound23:50:141
2777265999386,5cyclictest2778722-21kworker/u8:3+flush-179:019:15:150
2777267999286,4cyclictest2836924-21kworker/u8:2+events_unbound22:20:231
2777267999284,3cyclictest2849628-21kworker/u8:0+events_unbound23:05:231
2777265999281,4cyclictest2799725-21kworker/u8:2+events_unbound21:30:170
2777265999185,4cyclictest2774095-21kworker/u8:0+flush-179:019:35:250
2777265999084,4cyclictest2851217-21kworker/u8:2+events_unbound23:10:130
2777265999079,8cyclictest2802945-21latency_hist20:30:010
2777265998883,4cyclictest2877344-21kworker/u8:3+flush-179:000:35:250
2777265998881,4cyclictest2857630-21latency_hist23:20:010
2777265998879,6cyclictest2844852-21kworker/u8:1+events_unbound22:40:130
2777267998765,20cyclictest2791521-21kworker/u8:3+flush-179:020:15:021
2777265998782,4cyclictest2858516-21kworker/u8:0+flush-179:023:30:240
2777267998681,4cyclictest2774095-21kworker/u8:0+events_unbound19:10:201
2777267998681,3cyclictest2817583-21kworker/u8:0+events_unbound21:35:151
2777265998680,4cyclictest2774095-21kworker/u8:0+events_unbound19:30:210
2777265998679,5cyclictest2789907-21apt-get19:48:560
2777265998674,4cyclictest2799725-21kworker/u8:2+events_unbound20:40:130
2777265998580,4cyclictest2859508-21kworker/u8:3+events_unbound23:50:220
2777265998577,5cyclictest2874151-21kworker/u8:1+flush-179:000:15:140
2777267998478,4cyclictest2870064-21kworker/u8:0+flush-179:000:30:151
2777267998472,4cyclictest2874151-21kworker/u8:1+events_unbound00:20:231
2777267998472,4cyclictest2874151-21kworker/u8:1+events_unbound00:20:231
2777265998479,4cyclictest2817583-21kworker/u8:0+flush-179:021:40:250
2777265998479,4cyclictest2788355-21kworker/u8:1+events_unbound20:05:250
2777265998379,3cyclictest2791521-21kworker/u8:3+flush-179:020:00:230
2777267998177,3cyclictest2817583-21kworker/u8:0+events_unbound21:20:231
2777265998175,5cyclictest2870064-21kworker/u8:0+flush-179:000:30:250
2777265998170,4cyclictest2859508-21kworker/u8:3+events_unbound23:55:190
2777267998075,4cyclictest2799725-21kworker/u8:2+flush-179:020:40:161
2777267997975,3cyclictest2827342-21kworker/u8:3+flush-179:022:30:251
2777267997974,3cyclictest2874151-21kworker/u8:1+flush-179:000:15:151
2777267997873,4cyclictest2774095-21kworker/u8:0+events_unbound19:20:201
2777267997873,4cyclictest2774095-21kworker/u8:0+events_unbound19:20:191
2777267997873,3cyclictest2870064-21kworker/u8:0+events_unbound00:10:201
2777267997869,7cyclictest2870891-21apt-get00:00:131
2777267997773,3cyclictest2859508-21kworker/u8:3+flush-179:023:49:551
2777267997773,3cyclictest2858516-21kworker/u8:0+flush-179:023:25:201
2777267997772,4cyclictest2775670-21kworker/u8:2+events_unbound19:45:241
2777267997672,3cyclictest2851217-21kworker/u8:2+events_unbound23:20:151
2777267997671,4cyclictest2791521-21kworker/u8:3+events_unbound20:00:181
2777267997567,4cyclictest2801337-21kworker/u8:1+events_unbound20:35:191
2777267997554,9cyclictest2883657-21latency_hist00:40:011
2777265997570,4cyclictest2801337-21kworker/u8:1+events_unbound20:35:260
2777265997566,4cyclictest2849628-21kworker/u8:0+events_unbound23:05:190
2777267997468,4cyclictest2846502-21kworker/u8:4+flush-179:023:00:141
2777265997470,3cyclictest2874151-21kworker/u8:1+flush-179:000:20:260
2777265997470,3cyclictest2874151-21kworker/u8:1+flush-179:000:20:250
2777265997469,4cyclictest2798132-21kworker/u8:0+flush-179:020:20:250
2777265997465,4cyclictest2864284-21kworker/u8:2+events_unbound00:05:280
2777267997363,4cyclictest2858516-21kworker/u8:0+events_unbound23:40:221
2777265997368,4cyclictest2844852-21kworker/u8:1+flush-179:022:45:240
2777265997366,4cyclictest2807707-21kworker/u8:0+events_unbound20:55:210
2777267997263,7cyclictest510-21rs:main1
2777265997268,3cyclictest2827342-21kworker/u8:3+flush-179:021:45:240
2777265997267,4cyclictest2775670-21kworker/u8:2+flush-179:019:40:170
2777265997266,4cyclictest2814332-21kworker/u8:1+flush-179:021:05:200
2777265997266,4cyclictest2814332-21kworker/u8:1+flush-179:021:05:200
2777267997166,4cyclictest2844852-21kworker/u8:1+events_unbound22:55:201
2777267997166,4cyclictest2788290-21kworker/u8:0+flush-179:019:50:271
2777267997160,9cyclictest1213033-21systemd-journal23:35:001
2777265997165,4cyclictest2775670-21kworker/u8:2+flush-179:019:25:210
2777267997065,4cyclictest2851217-21kworker/u8:2+flush-179:023:15:171
2777267997065,3cyclictest2775670-21kworker/u8:2+flush-179:019:30:181
2777267997059,8cyclictest1213033-21systemd-journal21:10:011
2777267997059,8cyclictest1213033-21systemd-journal21:10:001
2777265997057,4cyclictest2865869-21kworker/u8:4+events_unbound23:45:140
2777267996965,3cyclictest2827342-21kworker/u8:3+flush-179:022:05:201
2777267996963,5cyclictest2836924-21kworker/u8:2+flush-179:022:50:281
2777265996965,3cyclictest2846502-21kworker/u8:4+flush-179:023:00:230
2777265996964,4cyclictest2817583-21kworker/u8:0+flush-179:022:00:200
2777265996964,4cyclictest2798132-21kworker/u8:0+flush-179:020:15:240
2777265996963,4cyclictest2827342-21kworker/u8:3+events_unbound22:25:160
2777267996863,4cyclictest2799725-21kworker/u8:2+flush-179:020:30:201
2777267996861,5cyclictest2817583-21kworker/u8:0+flush-179:021:35:011
2777267996860,7cyclictest2827342-21kworker/u8:3+flush-179:022:25:221
2777265996863,4cyclictest2799725-21kworker/u8:2+flush-179:021:10:280
2777265996861,5cyclictest2841720-21kworker/u8:0+flush-179:022:35:200
2777265996755,6cyclictest2836924-21kworker/u8:2+events_unbound22:15:140
277727399660,64cyclictest0-21swapper/321:15:593
2777267996662,3cyclictest2817583-21kworker/u8:0+events_unbound21:50:241
2777267996661,3cyclictest2836924-21kworker/u8:2+flush-179:022:40:101
2777267996660,4cyclictest2788355-21kworker/u8:1+events_unbound19:55:151
2777265996661,4cyclictest2836924-21kworker/u8:2+events_unbound22:20:210
2777265996661,3cyclictest2870064-21kworker/u8:0+events_unbound00:10:180
2777265996560,4cyclictest2858516-21kworker/u8:0+events_unbound23:40:200
2777265996560,4cyclictest2799725-21kworker/u8:2+events_unbound20:50:210
2777265996560,4cyclictest2774095-21kworker/u8:0+flush-179:019:20:260
2777265996560,4cyclictest2774095-21kworker/u8:0+flush-179:019:20:260
2777265996559,4cyclictest2827342-21kworker/u8:3+events_unbound22:30:180
2777267996460,3cyclictest2774095-21kworker/u8:0+events_unbound19:35:251
2777267996454,8cyclictest1213033-21systemd-journal00:05:011
2777267996454,7cyclictest2827614-21apt-get21:45:091
2777265996454,4cyclictest2836924-21kworker/u8:2+events_unbound22:50:230
2777267996357,4cyclictest2827342-21kworker/u8:3+events_unbound21:45:001
2777267996342,18cyclictest2870634-40mandb00:00:001
2777265996358,4cyclictest2859508-21kworker/u8:3+events_unbound23:35:270
2777265996049,9cyclictest510-21rs:main0
2777267995954,4cyclictest2807707-21kworker/u8:0+events_unbound21:00:221
2777267995954,4cyclictest2799725-21kworker/u8:2+flush-179:021:15:221
2777267995952,5cyclictest2796574-21latency_hist20:10:021
2777267995950,7cyclictest1213033-21systemd-journal21:55:161
2777265995925,32cyclictest714-21Xorg20:49:590
2777267995854,3cyclictest2827342-21kworker/u8:3+flush-179:022:10:241
2777267995854,3cyclictest2798132-21kworker/u8:0+flush-179:020:15:251
2777267995854,3cyclictest2774095-21kworker/u8:0+events_unbound19:25:181
2777267995551,3cyclictest2778722-21kworker/u8:3+events_unbound19:15:141
2777265995449,4cyclictest2844852-21kworker/u8:1+events_unbound22:55:140
2777267995045,4cyclictest2798132-21kworker/u8:0+flush-179:020:25:261
4577091480,13ptp4l61490irq/134-eno1-TxRx-019:09:563
2777267994844,3cyclictest2859508-21kworker/u8:3+events_unbound23:35:231
2777267994742,3cyclictest2817583-21kworker/u8:0+events_unbound21:25:111
2777271994239,2cyclictest0-21swapper/222:52:582
2777267994238,3cyclictest2801337-21kworker/u8:1+events_unbound20:24:171
277727399410,39cyclictest0-21swapper/321:20:593
2777271994138,2cyclictest0-21swapper/200:06:592
2777271994137,2cyclictest0-21swapper/222:31:592
2777265994132,7cyclictest2777130-21latency_hist19:10:020
2777271994037,2cyclictest0-21swapper/223:09:592
2777271994037,2cyclictest0-21swapper/220:43:002
2777273993937,1cyclictest0-21swapper/320:58:593
2777271993936,2cyclictest0-21swapper/222:05:592
2777271993935,2cyclictest0-21swapper/220:27:592
2777271993835,2cyclictest0-21swapper/223:50:582
2777271993835,2cyclictest0-21swapper/219:27:002
2777273993734,2cyclictest0-21swapper/319:27:003
277727399370,36cyclictest0-21swapper/322:46:593
2777271993734,2cyclictest0-21swapper/222:47:592
277727199370,35cyclictest0-21swapper/221:24:592
2777273993634,1cyclictest0-21swapper/323:34:553
2777273993634,1cyclictest0-21swapper/322:12:593
2777273993634,1cyclictest0-21swapper/321:29:553
277727399360,35cyclictest0-21swapper/322:39:593
2777271993633,2cyclictest0-21swapper/223:43:592
2777271993633,2cyclictest0-21swapper/221:33:002
2777271993633,2cyclictest0-21swapper/221:19:542
2777271993633,2cyclictest0-21swapper/220:16:592
2777271993633,2cyclictest0-21swapper/219:34:552
277727199360,1cyclictest0-21swapper/222:22:592
2777273993533,1cyclictest0-21swapper/323:04:593
277727399350,1cyclictest0-21swapper/322:34:553
277727399350,1cyclictest0-21swapper/300:17:593
2777271993533,1cyclictest0-21swapper/220:49:582
2777271993532,2cyclictest0-21swapper/221:53:582
2777271993532,2cyclictest0-21swapper/200:28:592
2777271993532,2cyclictest0-21swapper/200:16:592
2777271993531,2cyclictest0-21swapper/200:12:592
2777273993432,1cyclictest0-21swapper/321:53:593
2777273993432,1cyclictest0-21swapper/300:03:593
2777271993432,1cyclictest0-21swapper/219:44:592
2777271993431,2cyclictest0-21swapper/223:13:592
2777271993431,2cyclictest0-21swapper/219:47:592
2777271993431,2cyclictest0-21swapper/200:35:592
2777273993331,1cyclictest0-21swapper/322:50:593
2777273993331,1cyclictest0-21swapper/321:41:003
2777273993331,1cyclictest0-21swapper/321:04:583
2777273993331,1cyclictest0-21swapper/319:49:583
2777271993330,2cyclictest0-21swapper/221:35:582
2777271993330,2cyclictest0-21swapper/200:01:592
2777273993230,1cyclictest0-21swapper/323:40:593
2777273993230,1cyclictest0-21swapper/322:42:593
277727399320,30cyclictest0-21swapper/319:15:583
2777271993230,1cyclictest0-21swapper/219:54:592
2777271993229,2cyclictest0-21swapper/223:57:592
2777271993229,2cyclictest0-21swapper/223:16:592
2777271993229,2cyclictest0-21swapper/222:44:002
2777271993229,2cyclictest0-21swapper/222:02:002
2777271993229,2cyclictest0-21swapper/221:09:002
2777271993229,2cyclictest0-21swapper/221:08:592
2777273993129,1cyclictest0-21swapper/323:20:593
2777271993129,1cyclictest0-21swapper/220:25:002
2777271993128,2cyclictest0-21swapper/221:00:592
2777271993128,2cyclictest0-21swapper/219:55:592
2777271993128,2cyclictest0-21swapper/219:14:552
4577091300,9ptp4l441ktimers/320:04:563
2777273993027,2cyclictest0-21swapper/321:10:153
277727399300,29cyclictest0-21swapper/300:00:023
2777271993027,2cyclictest0-21swapper/221:29:002
2777271993027,2cyclictest0-21swapper/220:57:002
2777271993027,2cyclictest0-21swapper/220:50:022
2777271993027,2cyclictest0-21swapper/220:39:002
2777271993027,2cyclictest0-21swapper/220:10:592
2777271993027,2cyclictest0-21swapper/219:16:592
277727199300,28cyclictest0-21swapper/223:25:122
277727199300,28cyclictest0-21swapper/220:00:032
2777273992927,1cyclictest0-21swapper/319:31:583
277727399290,27cyclictest0-21swapper/300:30:133
2777271992926,2cyclictest0-21swapper/223:20:012
2777271992926,2cyclictest0-21swapper/221:47:002
277727199290,2cyclictest0-21swapper/222:35:132
277727199290,2cyclictest0-21swapper/220:30:122
277727199290,27cyclictest0-21swapper/221:10:162
2777273992826,1cyclictest0-21swapper/323:25:123
2777273992826,1cyclictest0-21swapper/320:50:033
2777273992826,1cyclictest0-21swapper/320:31:593
2777273992820,6cyclictest2781957-21turbostat19:25:013
2777273992820,6cyclictest2781957-21turbostat19:25:013
277727399280,2cyclictest0-21swapper/319:35:143
277727399280,27cyclictest0-21swapper/321:30:123
277727399280,27cyclictest0-21swapper/320:40:123
277727399280,27cyclictest0-21swapper/300:35:143
2777271992825,2cyclictest0-21swapper/223:49:592
2777271992825,2cyclictest0-21swapper/221:43:592
277727199280,2cyclictest0-21swapper/200:30:142
277727199280,26cyclictest0-21swapper/222:10:132
4577091270,7ptp4l61490irq/134-eno1-TxRx-021:50:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-022:05:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-020:25:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-019:55:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-000:25:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-000:24:593
4577091270,6ptp4l441ktimers/323:19:553
4577091270,6ptp4l441ktimers/322:25:003
4577091270,5ptp4l441ktimers/323:54:563
4577091270,5ptp4l441ktimers/323:15:003
4577091270,5ptp4l441ktimers/321:09:563
4577091270,5ptp4l441ktimers/321:09:563
4577091270,5ptp4l441ktimers/300:10:003
4577091270,4ptp4l441ktimers/322:30:013
2777273992725,1cyclictest0-21swapper/319:12:003
277727399270,26cyclictest0-21swapper/322:15:143
277727399270,26cyclictest0-21swapper/320:45:143
277727399270,26cyclictest0-21swapper/320:15:143
277727399270,26cyclictest0-21swapper/320:10:133
2777271992725,1cyclictest0-21swapper/219:39:592
2777271992724,2cyclictest0-21swapper/223:00:142
4577091260,6ptp4l61490irq/134-eno1-TxRx-022:59:553
4577091260,6ptp4l61490irq/134-eno1-TxRx-022:09:553
4577091260,6ptp4l441ktimers/319:45:013
4577091260,5ptp4l61490irq/134-eno1-TxRx-020:39:563
4577091260,5ptp4l61490irq/134-eno1-TxRx-020:30:003
4577091260,5ptp4l441ktimers/321:59:573
4577091260,5ptp4l441ktimers/321:39:553
4577091260,4ptp4l61490irq/134-eno1-TxRx-019:59:563
2777273992624,1cyclictest0-21swapper/300:28:593
2777271992623,2cyclictest0-21swapper/219:23:592
2777271992623,2cyclictest0-21swapper/219:23:582
277727199260,24cyclictest0-21swapper/200:20:592
277727199260,24cyclictest0-21swapper/200:20:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-023:40:003
4577091250,5ptp4l441ktimers/320:09:553
4577091250,5ptp4l441ktimers/300:14:553
2777271992522,2cyclictest0-21swapper/223:39:002
2777271992522,2cyclictest0-21swapper/222:19:552
2777271992522,2cyclictest0-21swapper/221:56:592
2777271992522,2cyclictest0-21swapper/220:05:592
277727199250,2cyclictest0-21swapper/222:25:132
2777273992119,1cyclictest0-21swapper/323:09:593
277726799215,14cyclictest2777342-21latency_hist19:10:021
2777271992017,2cyclictest0-21swapper/222:57:592
4577091160,3ptp4l441ktimers/323:45:013
277727199118,2cyclictest0-21swapper/223:32:592
27772719930,2cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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