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2026-06-13 - 11:47
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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 Sat Jun 13, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17376599126120,5cyclictest175221-21kworker/u8:0+events_unbound19:50:010
17376899122105,15cyclictest194642-21kworker/u8:0+flush-179:020:40:001
17376599121116,4cyclictest267076-21kworker/u8:0+events_unbound00:05:000
17376599115109,4cyclictest3213000-21kworker/u8:3+events_unbound20:00:240
17376599114107,6cyclictest175221-21kworker/u8:0+events_unbound19:55:010
17376599113105,6cyclictest249501-21latency_hist23:05:020
1737689911295,13cyclictest1213033-21systemd-journal22:20:001
17376899112104,5cyclictest239943-21latency_hist22:35:001
17376599112106,5cyclictest257437-21kworker/u8:1+flush-179:000:05:280
17376599112106,4cyclictest3213000-21kworker/u8:3+events_unbound19:35:240
17376599111106,4cyclictest234962-21kworker/u8:2+flush-179:022:30:000
1737659910791,4cyclictest172116-21kworker/u8:1+events_unbound19:15:240
1737659910694,9cyclictest267005-21/usr/sbin/munin00:00:010
1737689910595,7cyclictest191427-21latency_hist20:05:011
1737659910594,8cyclictest1213033-21systemd-journal21:00:230
1737659910498,4cyclictest3213000-21kworker/u8:3+flush-179:019:10:190
1737689910393,7cyclictest247903-21latency_hist23:00:021
1737659910396,4cyclictest191391-21kworker/u8:1+events_unbound20:40:220
1737659910394,7cyclictest251087-21latency_hist23:10:010
1737689910188,9cyclictest257437-21kworker/u8:1+flush-179:023:30:211
1737689910090,7cyclictest275340-21latency_hist00:25:011
1737659910093,5cyclictest257437-21kworker/u8:1+events_unbound23:45:190
1737659910090,7cyclictest200966-21latency_hist20:35:010
173765999986,10cyclictest221666-21latency_hist21:40:010
173765999883,12cyclictest221705-21http21:40:020
173768999790,4cyclictest185043-21kworker/u8:1+flush-179:019:50:241
173765999791,5cyclictest207308-21kworker/u8:0+flush-179:020:55:000
173765999791,4cyclictest234962-21kworker/u8:2+events_unbound22:45:190
173765999789,5cyclictest229862-21kworker/u8:3+events_unbound22:10:020
173765999689,5cyclictest276908-21kworker/u8:0+flush-179:000:35:220
173765999686,7cyclictest205746-21latency_hist20:50:010
173765999389,3cyclictest208895-21kworker/u8:1+flush-179:021:20:240
173765999387,5cyclictest194642-21kworker/u8:0+flush-179:020:35:200
173768999282,7cyclictest208895-21kworker/u8:1+flush-179:021:10:201
173765999283,6cyclictest215261-21kworker/u8:2+events_unbound22:05:190
173768999183,6cyclictest216878-21kworker/u8:3+flush-179:021:30:231
173768999164,24cyclictest175221-21kworker/u8:0+flush-179:019:35:011
173765999186,4cyclictest3213000-21kworker/u8:3+flush-179:019:30:230
173765999186,3cyclictest188275-21kworker/u8:2+flush-179:020:15:150
173765999186,3cyclictest188275-21kworker/u8:2+flush-179:020:15:140
173765999181,7cyclictest234885-21kworker/u8:1+events_unbound22:50:140
173768999083,5cyclictest210578-21kworker/u8:3+flush-179:021:10:011
173768999078,8cyclictest208895-21kworker/u8:1+flush-179:021:20:151
173765999084,3cyclictest255851-21kworker/u8:0+events_unbound23:35:190
173765999084,3cyclictest255851-21kworker/u8:0+events_unbound23:35:180
173768998979,7cyclictest208895-21kworker/u8:1+flush-179:021:00:211
173768998978,7cyclictest257437-21kworker/u8:1+flush-179:023:45:241
173765998982,4cyclictest216878-21kworker/u8:3+events_unbound21:30:200
173765998977,6cyclictest234962-21kworker/u8:2+events_unbound22:30:180
173768998878,7cyclictest199635-21apt-get20:30:121
173768998675,9cyclictest257437-21kworker/u8:1+events_unbound00:10:001
173765998678,6cyclictest234937-21latency_hist22:20:010
173765998575,7cyclictest226690-21latency_hist21:55:010
173765998480,3cyclictest251076-21kworker/u8:3+events_unbound23:10:140
173765998479,4cyclictest267076-21kworker/u8:0+flush-179:000:10:200
173765998478,4cyclictest262222-21kworker/u8:3+events_unbound00:25:200
173768998376,4cyclictest194642-21kworker/u8:0+flush-179:020:20:221
173768998375,6cyclictest185315-21apt-get19:45:111
173765998374,7cyclictest191391-21kworker/u8:1+events_unbound20:20:190
173768998272,6cyclictest1213033-21systemd-journal23:54:281
173765998278,3cyclictest243180-21kworker/u8:3+flush-179:022:59:550
173765998276,4cyclictest227225-21kworker/u8:0+flush-179:022:00:190
173765998276,4cyclictest175221-21kworker/u8:0+events_unbound19:40:190
173765998275,4cyclictest208895-21kworker/u8:1+events_unbound21:10:150
173765998275,4cyclictest188275-21kworker/u8:2+events_unbound20:05:140
173765998271,4cyclictest202596-21kworker/u8:2+events_unbound20:55:240
173768998171,7cyclictest268921-21latency_hist00:05:011
17376899811,61cyclictest1-21systemd23:02:281
173765998176,4cyclictest3213000-21kworker/u8:3+flush-179:019:20:250
173768998071,6cyclictest207331-21latency_hist20:55:001
173768998071,5cyclictest276908-21kworker/u8:0+events_unbound00:30:001
173765997974,3cyclictest251076-21kworker/u8:3+flush-179:023:15:140
173765997973,4cyclictest255851-21kworker/u8:0+flush-179:023:25:200
173765997872,3cyclictest272178-21kworker/u8:2+events_unbound00:20:190
173765997871,5cyclictest234962-21kworker/u8:2+events_unbound23:20:150
173768997771,4cyclictest251076-21kworker/u8:3+events_unbound23:20:001
173768997757,5cyclictest229862-21kworker/u8:3+events_unbound22:05:001
173768997668,6cyclictest176845-21latency_hist19:20:011
173768997666,8cyclictest1213033-21systemd-journal22:10:011
173765997671,3cyclictest257437-21kworker/u8:1+flush-179:023:40:210
173768997570,4cyclictest257437-21kworker/u8:1+flush-179:000:10:231
173768997566,6cyclictest234885-21kworker/u8:1+flush-179:022:20:211
173768997566,6cyclictest234885-21kworker/u8:1+events_unbound22:25:031
173765997568,5cyclictest208895-21kworker/u8:1+events_unbound21:05:250
173768997463,9cyclictest225360-21apt-get21:50:121
173765997364,7cyclictest188275-21kworker/u8:2+events_unbound19:55:150
173768997266,4cyclictest245382-21kworker/u8:0+flush-179:022:50:211
173768997265,5cyclictest175221-21kworker/u8:0+flush-179:019:40:221
173768997265,4cyclictest215261-21kworker/u8:2+flush-179:021:45:221
173768997264,6cyclictest272178-21kworker/u8:2+events_unbound00:20:011
173765997264,6cyclictest1213033-21systemd-journal20:29:250
173768997063,5cyclictest227225-21kworker/u8:0+events_unbound21:55:241
173765997065,4cyclictest234962-21kworker/u8:2+flush-179:022:40:250
173765996963,5cyclictest234885-21kworker/u8:1+flush-179:022:20:210
173768996861,4cyclictest199381-21latency_hist20:30:011
173765996863,3cyclictest257437-21kworker/u8:1+flush-179:023:30:100
173768996761,4cyclictest255851-21kworker/u8:0+events_unbound23:25:231
173765996762,4cyclictest257437-21kworker/u8:1+events_unbound23:54:550
173765996762,4cyclictest212369-21kworker/u8:0+events_unbound21:15:170
173768996661,4cyclictest212369-21kworker/u8:0+events_unbound21:15:301
173768996660,4cyclictest215261-21kworker/u8:2+events_unbound21:35:251
173768996657,7cyclictest255851-21kworker/u8:0+events_unbound23:40:141
173768996644,21cyclictest257437-21kworker/u8:1+flush-179:000:00:011
173765996651,11cyclictest175221-21kworker/u8:0+flush-179:019:25:210
173768996560,3cyclictest215261-21kworker/u8:2+flush-179:021:27:291
173765996559,5cyclictest216878-21kworker/u8:3+flush-179:021:25:160
173768996458,4cyclictest276908-21kworker/u8:0+flush-179:000:35:241
173768996455,7cyclictest3213000-21kworker/u8:3+flush-179:019:30:011
173765996460,3cyclictest272178-21kworker/u8:2+flush-179:000:30:260
17377199630,62cyclictest0-21swapper/300:33:593
173768996256,4cyclictest191391-21kworker/u8:1+flush-179:020:15:261
173768996256,4cyclictest191391-21kworker/u8:1+flush-179:020:15:261
173768996250,9cyclictest1213033-21systemd-journal23:40:011
173768996250,9cyclictest1213033-21systemd-journal23:40:011
173768996156,4cyclictest216878-21kworker/u8:3+flush-179:021:40:241
173768996152,6cyclictest241562-21latency_hist22:40:011
173771996058,1cyclictest0-21swapper/320:43:583
173768996054,4cyclictest189823-21latency_hist20:00:011
173768996052,5cyclictest188275-21kworker/u8:2+flush-179:020:10:201
173768995753,3cyclictest234962-21kworker/u8:2+flush-179:022:44:291
173768995751,5cyclictest255851-21kworker/u8:0+flush-179:023:23:281
173765995752,4cyclictest262222-21kworker/u8:3+flush-179:000:15:330
173765995752,4cyclictest188275-21kworker/u8:2+events_unbound20:10:140
173768995650,4cyclictest272178-21kworker/u8:2+flush-179:000:32:081
173765995651,4cyclictest234962-21kworker/u8:2+flush-179:022:39:550
173768995446,6cyclictest204161-21latency_hist20:45:021
173765995449,4cyclictest223496-21kworker/u8:1+flush-179:021:48:280
173768995241,9cyclictest234962-21kworker/u8:2+flush-179:023:15:001
173768995042,6cyclictest202596-21kworker/u8:2+events_unbound20:45:231
173765995045,4cyclictest227225-21kworker/u8:0+events_unbound21:58:300
4577091490,13ptp4l441ktimers/319:10:013
173771994947,1cyclictest0-21swapper/319:48:593
173768994946,2cyclictest245382-21kworker/u8:0+events_unbound23:05:131
173768994942,5cyclictest229862-21kworker/u8:3+flush-179:022:10:201
173771994442,1cyclictest0-21swapper/321:19:593
173768994439,4cyclictest202596-21kworker/u8:2+flush-179:020:55:221
173768994439,4cyclictest188275-21kworker/u8:2+flush-179:020:05:171
173768994335,6cyclictest3213000-21kworker/u8:3+flush-179:019:20:171
173768994334,7cyclictest3213000-21kworker/u8:3+flush-179:019:35:251
173769994240,1cyclictest0-21swapper/220:54:582
173768994234,6cyclictest173625-21latency_hist19:10:021
17377199410,40cyclictest247904-21turbostat23:00:003
173769994138,2cyclictest0-21swapper/219:22:592
173771994038,1cyclictest0-21swapper/320:52:593
17377199400,38cyclictest188249-21turbostat19:59:563
173768994031,7cyclictest234962-21kworker/u8:2+events_unbound22:45:201
173769993936,2cyclictest0-21swapper/222:18:002
173769993836,1cyclictest0-21swapper/200:40:002
173769993835,2cyclictest0-21swapper/221:29:002
173771993735,1cyclictest0-21swapper/320:27:583
173771993734,2cyclictest0-21swapper/323:25:593
17376999370,35cyclictest0-21swapper/223:44:592
17376999370,35cyclictest0-21swapper/222:29:592
173768993726,9cyclictest174193-21diskstats19:10:141
173769993634,1cyclictest0-21swapper/222:40:012
173769993634,1cyclictest0-21swapper/200:34:592
173769993633,2cyclictest0-21swapper/222:09:582
173769993633,2cyclictest0-21swapper/221:55:582
173769993632,2cyclictest0-21swapper/220:04:552
17376999360,2cyclictest0-21swapper/222:30:592
17376999360,1cyclictest0-21swapper/223:19:592
17376999360,1cyclictest0-21swapper/219:57:592
173769993532,2cyclictest0-21swapper/223:26:002
173769993532,2cyclictest0-21swapper/223:21:592
173769993532,2cyclictest0-21swapper/221:10:592
173769993532,2cyclictest0-21swapper/220:19:002
173769993532,2cyclictest0-21swapper/220:18:592
173771993432,1cyclictest0-21swapper/320:38:593
173771993431,2cyclictest0-21swapper/320:02:003
173771993431,2cyclictest0-21swapper/319:29:593
173769993432,1cyclictest0-21swapper/219:49:582
173769993431,2cyclictest0-21swapper/223:54:592
173769993431,2cyclictest0-21swapper/222:55:582
173769993430,2cyclictest0-21swapper/223:45:592
173771993331,1cyclictest0-21swapper/321:46:593
173771993331,1cyclictest0-21swapper/319:35:593
173771993331,1cyclictest0-21swapper/300:09:553
173771993330,2cyclictest0-21swapper/323:03:593
173771993328,4cyclictest181612-21turbostat19:35:003
173769993331,1cyclictest0-21swapper/220:21:592
173769993330,2cyclictest0-21swapper/222:48:592
173769993330,2cyclictest0-21swapper/222:02:002
173769993330,2cyclictest0-21swapper/221:22:582
173769993330,2cyclictest0-21swapper/221:19:002
173769993330,2cyclictest0-21swapper/219:31:592
173769993330,2cyclictest0-21swapper/200:07:592
173771993230,1cyclictest0-21swapper/322:35:593
173771993230,1cyclictest0-21swapper/320:12:593
173771993230,1cyclictest0-21swapper/319:19:553
173771993230,1cyclictest0-21swapper/300:17:593
173769993229,2cyclictest0-21swapper/222:21:002
4577091310,4ptp4l61490irq/134-eno1-TxRx-021:05:003
173771993130,1cyclictest0-21swapper/322:00:003
173769993129,1cyclictest0-21swapper/200:04:592
173769993128,2cyclictest0-21swapper/221:08:582
17376999310,29cyclictest0-21swapper/220:56:592
173771993028,1cyclictest0-21swapper/321:25:593
173771993027,2cyclictest0-21swapper/322:45:143
173769993027,2cyclictest0-21swapper/220:06:592
17376999300,2cyclictest0-21swapper/221:35:122
17376999300,2cyclictest0-21swapper/220:25:112
4577091290,7ptp4l441ktimers/319:55:013
4577091290,6ptp4l441ktimers/322:05:013
4577091290,6ptp4l441ktimers/320:25:003
173771992927,1cyclictest0-21swapper/323:05:133
17377199290,2cyclictest0-21swapper/319:13:593
17377199290,27cyclictest0-21swapper/323:10:113
17377199290,27cyclictest0-21swapper/322:10:033
17377199290,27cyclictest0-21swapper/320:30:133
17377199290,23cyclictest0-21swapper/323:35:133
17377199290,23cyclictest0-21swapper/323:35:123
173769992927,1cyclictest0-21swapper/200:14:592
173769992926,2cyclictest0-21swapper/221:30:132
173769992926,2cyclictest0-21swapper/221:00:132
17376999290,2cyclictest0-21swapper/219:15:122
17376999290,27cyclictest0-21swapper/200:00:022
4577091280,9ptp4l61490irq/134-eno1-TxRx-021:39:553
4577091280,7ptp4l441ktimers/300:05:003
4577091280,6ptp4l441ktimers/322:45:003
4577091280,6ptp4l441ktimers/321:24:553
4577091280,5ptp4l441ktimers/322:20:003
4577091280,5ptp4l441ktimers/321:15:013
4577091280,5ptp4l441ktimers/320:20:013
4577091280,5ptp4l441ktimers/320:20:003
4577091280,5ptp4l441ktimers/319:45:003
173771992825,2cyclictest0-21swapper/321:30:593
17377199280,27cyclictest223524-21turbostat21:45:003
17377199280,27cyclictest0-21swapper/319:20:123
17377199280,27cyclictest0-21swapper/300:00:013
17377199280,26cyclictest0-21swapper/322:05:113
17377199280,26cyclictest0-21swapper/321:50:133
17377199280,1cyclictest0-21swapper/323:50:123
173769992826,1cyclictest0-21swapper/222:44:592
173769992826,1cyclictest0-21swapper/220:45:002
173769992825,2cyclictest0-21swapper/223:10:112
173769992825,2cyclictest0-21swapper/220:48:592
17376999280,2cyclictest0-21swapper/222:50:142
17376999280,26cyclictest0-21swapper/223:30:112
17376999280,26cyclictest0-21swapper/221:40:032
17376999280,26cyclictest0-21swapper/219:40:112
17376999280,26cyclictest0-21swapper/219:10:112
4577091270,7ptp4l61490irq/134-eno1-TxRx-000:39:553
4577091270,6ptp4l61490irq/134-eno1-TxRx-022:55:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-000:15:003
4577091270,6ptp4l441ktimers/323:44:563
4577091270,6ptp4l441ktimers/323:35:013
4577091270,6ptp4l441ktimers/321:00:013
4577091270,6ptp4l441ktimers/300:25:013
4577091270,5ptp4l441ktimers/320:10:013
4577091270,1ptp4l67-21kworker/3:1+events21:05:143
173771992725,1cyclictest0-21swapper/322:23:593
173771992725,1cyclictest0-21swapper/300:25:123
17377199270,25cyclictest238365-21turbostat22:34:553
17377199270,1cyclictest0-21swapper/322:25:033
173769992725,1cyclictest0-21swapper/219:30:012
173769992724,2cyclictest0-21swapper/223:06:592
173769992724,2cyclictest0-21swapper/222:10:582
4577091260,5ptp4l441ktimers/320:49:553
173769992623,2cyclictest0-21swapper/223:00:112
173769992623,2cyclictest0-21swapper/221:50:592
17376999260,24cyclictest0-21swapper/223:36:002
17376999260,24cyclictest0-21swapper/223:35:592
17376999260,24cyclictest0-21swapper/200:28:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-023:50:003
4577091250,5ptp4l61490irq/134-eno1-TxRx-023:20:003
4577091250,4ptp4l61490irq/134-eno1-TxRx-023:24:563
173769992522,2cyclictest0-21swapper/220:36:592
173769992522,2cyclictest0-21swapper/200:20:132
173769992422,1cyclictest0-21swapper/219:35:132
173769992421,2cyclictest0-21swapper/220:30:592
173769992421,2cyclictest0-21swapper/220:11:592
173769992421,2cyclictest0-21swapper/200:15:132
173769992219,2cyclictest0-21swapper/219:50:592
173769992118,2cyclictest0-21swapper/221:47:002
17376599152,9cyclictest173770-21date19:10:020
1737699930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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