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2026-07-14 - 05:57
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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 Tue Jul 14, 2026 00:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15060799146118,25cyclictest243971-40mandb00:00:011
15060799125116,6cyclictest245601-21latency_hist00:05:011
15060799116109,5cyclictest200686-21kworker/u8:3+events_unbound22:30:001
15060399114100,11cyclictest1213033-21systemd-journal20:10:010
1506039911298,12cyclictest1213033-21systemd-journal00:00:010
15060799111101,7cyclictest153926-21latency_hist19:20:011
15060399109104,4cyclictest197439-21kworker/u8:2+events_unbound21:35:260
15060399109104,3cyclictest203846-21kworker/u8:1+events_unbound22:00:190
15060399107102,3cyclictest251449-21kworker/u8:0+events_unbound00:25:260
1506039910499,4cyclictest215579-21kworker/u8:0+events_unbound22:40:260
1506039910498,5cyclictest173275-21kworker/u8:0+flush-179:020:30:240
1506039910394,5cyclictest222973-21latency_hist22:55:000
1506039910393,4cyclictest251449-21kworker/u8:0+events_unbound00:30:190
1506039910390,10cyclictest190843-21http21:15:010
1506079910090,8cyclictest232798-21latency_hist23:25:011
1506039910096,3cyclictest152047-21kworker/u8:2+events_unbound19:25:250
1506039910086,11cyclictest1213033-21systemd-journal00:20:010
1506039910086,11cyclictest1213033-21systemd-journal00:20:010
150607999990,7cyclictest163744-21latency_hist19:50:011
150603999993,4cyclictest173275-21kworker/u8:0+flush-179:020:50:220
150603999893,4cyclictest173275-21kworker/u8:0+events_unbound20:35:240
150603999893,4cyclictest173275-21kworker/u8:0+events_unbound20:35:240
150603999791,4cyclictest174887-21kworker/u8:1+events_unbound20:45:200
150603999692,3cyclictest197432-21kworker/u8:1+events_unbound21:40:250
150603999590,3cyclictest174887-21kworker/u8:1+events_unbound20:40:190
150607999488,4cyclictest171702-21latency_hist20:15:011
150603999387,4cyclictest224626-21kworker/u8:3+events_unbound23:25:200
150603999387,4cyclictest190789-21kworker/u8:1+events_unbound21:15:260
150603999387,4cyclictest170106-21kworker/u8:1+events_unbound20:10:180
150603999381,5cyclictest212830-21kworker/u8:2+events_unbound22:20:230
150603999381,5cyclictest212830-21kworker/u8:2+events_unbound22:20:230
150603999287,4cyclictest187615-21kworker/u8:0+events_unbound21:25:240
150603999085,4cyclictest251449-21kworker/u8:0+flush-179:000:20:240
150603998984,4cyclictest203846-21kworker/u8:1+flush-179:021:55:300
150603998978,8cyclictest230950-21apt-get23:20:000
150607998880,6cyclictest206438-21kworker/u8:0+flush-179:022:10:221
150607998879,7cyclictest173550-21/usr/sbin/munin20:20:171
150603998882,4cyclictest252004-21kworker/u8:3+events_unbound00:35:240
150603998879,3cyclictest173275-21kworker/u8:0+events_unbound20:25:150
150603998878,8cyclictest152585-21apt-get19:15:120
150603998782,4cyclictest243910-21kworker/u8:1+flush-179:000:00:240
150603998676,4cyclictest224626-21kworker/u8:3+events_unbound23:20:160
150607998473,8cyclictest1213033-21systemd-journal23:00:001
150603998480,3cyclictest174887-21kworker/u8:1+events_unbound21:00:290
150603998475,3cyclictest152047-21kworker/u8:2+events_unbound19:45:240
150607998375,6cyclictest173275-21kworker/u8:0+flush-179:020:35:151
150607998375,6cyclictest173275-21kworker/u8:0+flush-179:020:35:141
150603998175,4cyclictest187615-21kworker/u8:0+events_unbound21:05:140
150607998077,2cyclictest240724-21kworker/u8:0+events_unbound23:50:201
150603998076,3cyclictest224626-21kworker/u8:3+events_unbound23:30:230
150603998076,3cyclictest224626-21kworker/u8:3+events_unbound23:30:230
150603998076,3cyclictest152047-21kworker/u8:2+events_unbound19:40:200
150603998071,3cyclictest206438-21kworker/u8:0+events_unbound22:15:280
150603998070,7cyclictest200686-21kworker/u8:3+flush-179:021:50:000
150603998067,9cyclictest1213033-21systemd-journal22:10:180
150607997972,5cyclictest224626-21kworker/u8:3+flush-179:023:05:221
150603997973,4cyclictest235956-21kworker/u8:2+events_unbound23:35:230
150607997765,7cyclictest235956-21kworker/u8:2+flush-179:023:35:211
150603997772,4cyclictest170106-21kworker/u8:1+events_unbound20:15:230
150603997768,3cyclictest152047-21kworker/u8:2+events_unbound20:20:270
150603997672,3cyclictest224626-21kworker/u8:3+events_unbound23:10:250
150603997665,8cyclictest152070-21latency_hist19:15:010
150607997569,4cyclictest224626-21kworker/u8:3+flush-179:023:15:221
150603997570,4cyclictest144379-21kworker/u8:0+events_unbound19:20:240
150603997570,4cyclictest144379-21kworker/u8:0+events_unbound19:20:240
150607997469,3cyclictest215579-21kworker/u8:0+flush-179:022:35:001
150603997469,4cyclictest212830-21kworker/u8:2+events_unbound22:25:240
150603997468,4cyclictest160535-21kworker/u8:0+events_unbound19:55:000
150603997466,6cyclictest240724-21kworker/u8:0+flush-179:023:50:220
150603997464,3cyclictest200686-21kworker/u8:3+events_unbound22:35:200
150607997366,4cyclictest234919-21kworker/u8:1+events_unbound23:35:011
150607997366,4cyclictest234919-21kworker/u8:1+events_unbound23:35:011
150607997261,8cyclictest1213033-21systemd-journal22:45:001
150603997264,3cyclictest234919-21kworker/u8:1+events_unbound23:45:220
150607997164,5cyclictest158940-21kworker/u8:3+flush-179:019:35:211
150607997162,7cyclictest234385-21latency_hist23:30:011
150607997160,9cyclictest252004-21kworker/u8:3+flush-179:000:35:211
150603997162,7cyclictest186048-21dump-pmu-power21:00:000
150607997061,7cyclictest197988-21diskstats21:35:161
150603997062,5cyclictest242321-21kworker/u8:2+flush-179:000:05:190
150603996965,3cyclictest200686-21kworker/u8:3+events_unbound22:47:200
150603996964,4cyclictest187615-21kworker/u8:0+flush-179:021:32:050
150603996964,4cyclictest158940-21kworker/u8:3+flush-179:019:34:560
150603996959,8cyclictest187615-21kworker/u8:0+flush-179:021:20:230
150603996864,3cyclictest215579-21kworker/u8:0+events_unbound22:30:180
150607996761,4cyclictest234919-21kworker/u8:1+events_unbound23:45:241
150603996758,7cyclictest222028-21kworker/u8:0+flush-179:022:55:230
150607996658,6cyclictest187615-21kworker/u8:0+flush-179:021:20:261
150607996657,6cyclictest187615-21kworker/u8:0+events_unbound21:20:011
150603996661,4cyclictest224538-21kworker/u8:2+flush-179:023:01:200
150607996562,2cyclictest187615-21kworker/u8:0+events_unbound21:25:171
150607996561,3cyclictest173275-21kworker/u8:0+flush-179:020:30:221
150607996555,8cyclictest216546-21kworker/u8:1+events_unbound22:40:011
150603996557,7cyclictest158940-21kworker/u8:3+flush-179:019:35:250
150607996458,4cyclictest186304-21apt-get21:00:141
150603996459,4cyclictest224626-21kworker/u8:3+events_unbound23:05:270
150607996358,4cyclictest1-21systemd20:10:011
150607996355,6cyclictest152047-21kworker/u8:2+flush-179:019:30:011
150607996354,6cyclictest200686-21kworker/u8:3+events_unbound22:05:201
150607996255,5cyclictest152047-21kworker/u8:2+events_unbound19:55:271
150607996252,7cyclictest189224-21latency_hist21:10:011
150607996250,9cyclictest152047-21kworker/u8:2+events_unbound19:40:171
150607996155,4cyclictest197432-21kworker/u8:1+flush-179:021:45:001
150607996152,6cyclictest173305-21latency_hist20:20:011
150607996150,9cyclictest167194-21apt-get20:00:131
150603996155,5cyclictest152047-21kworker/u8:2+events_unbound19:55:240
150603996151,3cyclictest206438-21kworker/u8:0+events_unbound22:07:110
150603995951,7cyclictest235956-21kworker/u8:2+flush-179:023:40:210
150607995854,3cyclictest206438-21kworker/u8:0+events_unbound22:20:161
150607995854,3cyclictest206438-21kworker/u8:0+events_unbound22:20:151
150607995851,5cyclictest187615-21kworker/u8:0+events_unbound21:45:201
150607995848,7cyclictest235956-21kworker/u8:2+flush-179:023:40:201
150607995844,11cyclictest1213033-21systemd-journal22:50:001
150603995857,1cyclictest0-21swapper/020:01:590
150607995754,2cyclictest224626-21kworker/u8:3+flush-179:023:10:211
150607995747,8cyclictest242321-21kworker/u8:2+flush-179:000:05:231
150607995746,10cyclictest174887-21kworker/u8:1+events_unbound20:55:221
150607995647,7cyclictest1213033-21systemd-journal00:18:191
150607995647,7cyclictest1213033-21systemd-journal00:18:191
150607995543,10cyclictest1213033-21systemd-journal22:05:001
150607995450,3cyclictest243910-21kworker/u8:1+events_unbound00:20:111
150607995337,11cyclictest190824-21apt-get21:15:001
150607995242,8cyclictest200686-21kworker/u8:3+flush-179:021:55:231
15060799521,49cyclictest0-21swapper/119:25:141
150609995148,2cyclictest0-21swapper/223:52:592
150603995147,3cyclictest243910-21kworker/u8:1+flush-179:000:10:280
150603995146,4cyclictest187615-21kworker/u8:0+events_unbound21:50:230
150607995044,5cyclictest187615-21kworker/u8:0+flush-179:021:50:231
150607995044,4cyclictest197439-21kworker/u8:2+flush-179:021:35:001
150607995043,5cyclictest173275-21kworker/u8:0+flush-179:020:50:201
150607995038,8cyclictest224538-21kworker/u8:2+flush-179:023:00:211
4577091490,14ptp4l61490irq/134-eno1-TxRx-019:10:003
150607994939,6cyclictest251449-21kworker/u8:0+flush-179:000:30:161
150607994841,4cyclictest208575-21kworker/u8:1+events_unbound22:15:171
150612994745,1cyclictest0-21swapper/323:19:593
150612994745,1cyclictest0-21swapper/320:11:593
150607994640,5cyclictest174916-21turbostat20:29:541
150609994441,2cyclictest0-21swapper/220:11:592
150607994335,6cyclictest216546-21kworker/u8:1+events_unbound22:55:011
150607994332,7cyclictest174887-21kworker/u8:1+flush-179:020:40:211
150607994327,15cyclictest0-21swapper/119:10:591
15060999420,1cyclictest0-21swapper/223:19:592
15060799414,31cyclictest2304-21lightdm-gtk-gre00:10:591
150612994032,6cyclictest239188-21turbostat23:45:003
15061299400,1cyclictest0-21swapper/320:29:553
150607994029,9cyclictest1213033-21systemd-journal19:25:001
150607994029,9cyclictest1213033-21systemd-journal19:24:591
150609993936,2cyclictest0-21swapper/223:42:592
15060999390,36cyclictest0-21swapper/221:55:002
150612993836,1cyclictest0-21swapper/322:53:593
150612993835,1cyclictest0-21swapper/319:21:003
150612993835,1cyclictest0-21swapper/319:21:003
15060999380,36cyclictest0-21swapper/220:24:592
15060999380,35cyclictest0-21swapper/223:09:552
15060999380,35cyclictest0-21swapper/220:35:012
15060999380,35cyclictest0-21swapper/219:40:002
150612993733,2cyclictest0-21swapper/320:57:593
150612993733,2cyclictest0-21swapper/300:11:593
15061299370,36cyclictest0-21swapper/323:58:593
150609993734,2cyclictest0-21swapper/222:16:582
15060999370,35cyclictest0-21swapper/222:51:592
15060999370,35cyclictest0-21swapper/220:45:582
15060999370,34cyclictest0-21swapper/222:05:012
15060999370,2cyclictest0-21swapper/221:18:592
150607993732,3cyclictest160535-21kworker/u8:0+events_unbound19:50:231
150607993713,23cyclictest182475-21run-parts20:45:251
150612993633,2cyclictest0-21swapper/321:01:583
15061299360,35cyclictest0-21swapper/323:47:593
15061299360,35cyclictest0-21swapper/322:03:583
15061299360,35cyclictest0-21swapper/320:49:543
15061299360,1cyclictest0-21swapper/319:48:593
150609993634,1cyclictest0-21swapper/222:45:002
150609993634,1cyclictest0-21swapper/222:35:012
150609993633,2cyclictest0-21swapper/222:28:592
150609993633,2cyclictest0-21swapper/219:24:002
150609993633,2cyclictest0-21swapper/219:23:592
150609993632,2cyclictest0-21swapper/223:27:592
15060999360,1cyclictest0-21swapper/220:42:592
150612993533,1cyclictest0-21swapper/320:34:553
150612993532,2cyclictest0-21swapper/322:33:583
150612993528,5cyclictest218172-21turbostat22:40:003
15061299350,34cyclictest0-21swapper/321:29:563
150609993533,1cyclictest0-21swapper/221:59:592
150609993532,2cyclictest0-21swapper/223:30:592
150609993532,2cyclictest0-21swapper/223:30:592
150612993428,4cyclictest242356-21turbostat23:55:003
150609993431,2cyclictest0-21swapper/223:45:592
150609993431,2cyclictest0-21swapper/223:37:592
150609993431,2cyclictest0-21swapper/219:17:592
150612993330,2cyclictest0-21swapper/323:39:593
150612993330,2cyclictest0-21swapper/322:24:593
150612993330,2cyclictest0-21swapper/322:24:593
150609993331,1cyclictest0-21swapper/221:00:012
150609993331,1cyclictest0-21swapper/220:09:592
150609993330,2cyclictest0-21swapper/223:23:592
150609993330,2cyclictest0-21swapper/219:32:582
150609993330,2cyclictest0-21swapper/200:29:552
150609993330,2cyclictest0-21swapper/200:11:592
150609993330,1cyclictest0-21swapper/219:55:002
15060799332,25cyclictest2304-21lightdm-gtk-gre00:25:591
150612993229,2cyclictest0-21swapper/321:20:593
150612993229,2cyclictest0-21swapper/300:19:003
150612993229,2cyclictest0-21swapper/300:18:593
150609993230,1cyclictest0-21swapper/200:25:002
150609993229,2cyclictest0-21swapper/220:52:592
150609993229,2cyclictest0-21swapper/200:36:592
150612993128,2cyclictest0-21swapper/322:45:593
150612993128,2cyclictest0-21swapper/319:10:593
150612993127,3cyclictest0-21swapper/300:31:593
150609993129,1cyclictest0-21swapper/222:14:592
150609993129,1cyclictest0-21swapper/200:05:002
150609993128,2cyclictest0-21swapper/223:13:592
150609993128,2cyclictest0-21swapper/223:04:552
150609993128,2cyclictest0-21swapper/200:34:542
150609993128,2cyclictest0-21swapper/200:15:592
150609993128,2cyclictest0-21swapper/200:15:582
4577091300,6ptp4l441ktimers/321:35:003
150612993028,1cyclictest0-21swapper/322:55:593
15061299300,28cyclictest0-21swapper/319:15:123
15061299300,1cyclictest0-21swapper/319:25:123
150609993027,2cyclictest0-21swapper/221:38:592
150609993027,2cyclictest0-21swapper/221:02:582
150609993027,2cyclictest0-21swapper/220:27:002
15060999300,29cyclictest0-21swapper/221:20:142
4577091290,6ptp4l441ktimers/300:40:013
150612992927,1cyclictest0-21swapper/300:25:583
150612992927,1cyclictest0-21swapper/300:20:113
15061299290,27cyclictest0-21swapper/319:50:143
150609992926,2cyclictest0-21swapper/222:55:592
150609992926,2cyclictest0-21swapper/221:28:592
150609992926,2cyclictest0-21swapper/219:45:132
15060999290,28cyclictest0-21swapper/222:05:142
15060999290,27cyclictest0-21swapper/221:10:132
15060999290,27cyclictest0-21swapper/219:10:122
4577091280,6ptp4l441ktimers/323:05:003
4577091280,6ptp4l441ktimers/322:20:023
4577091280,6ptp4l441ktimers/322:10:003
4577091280,6ptp4l441ktimers/320:19:553
4577091280,6ptp4l441ktimers/320:10:013
150612992825,2cyclictest0-21swapper/321:45:133
150612992825,2cyclictest0-21swapper/321:15:013
15061299280,27cyclictest0-21swapper/321:55:153
150609992826,1cyclictest0-21swapper/222:50:002
150609992825,2cyclictest0-21swapper/219:57:592
15060999280,26cyclictest0-21swapper/221:30:122
4577091270,6ptp4l61490irq/134-eno1-TxRx-023:24:553
4577091270,6ptp4l61490irq/134-eno1-TxRx-020:25:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-019:35:003
4577091270,6ptp4l441ktimers/323:15:003
4577091270,6ptp4l441ktimers/320:44:593
4577091270,5ptp4l441ktimers/320:00:003
150612992724,2cyclictest0-21swapper/322:25:143
15061299270,26cyclictest0-21swapper/322:11:593
15061299270,1cyclictest0-21swapper/319:40:133
15060999270,1cyclictest0-21swapper/223:55:142
4577091260,6ptp4l61490irq/134-eno1-TxRx-021:55:003
4577091260,6ptp4l441ktimers/321:44:563
4577091260,5ptp4l61490irq/134-eno1-TxRx-023:34:573
4577091260,5ptp4l61490irq/134-eno1-TxRx-023:34:563
4577091260,5ptp4l61490irq/134-eno1-TxRx-022:44:563
4577091260,5ptp4l61490irq/134-eno1-TxRx-020:55:013
4577091260,5ptp4l61490irq/134-eno1-TxRx-020:39:563
4577091260,5ptp4l61490irq/134-eno1-TxRx-020:39:563
4577091260,5ptp4l61490irq/134-eno1-TxRx-000:04:563
4577091260,5ptp4l441ktimers/321:14:553
150612992623,2cyclictest0-21swapper/319:35:143
150609992623,2cyclictest0-21swapper/220:00:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-023:29:553
4577091250,5ptp4l61490irq/134-eno1-TxRx-021:09:563
4577091250,5ptp4l441ktimers/321:39:553
4577091250,4ptp4l61490irq/134-eno1-TxRx-020:04:553
150612992523,1cyclictest0-21swapper/300:06:593
15061299250,24cyclictest0-21swapper/323:05:593
150609992522,2cyclictest0-21swapper/221:08:592
150609992522,2cyclictest0-21swapper/220:17:592
150609992522,2cyclictest0-21swapper/219:27:592
150609992421,2cyclictest0-21swapper/220:35:592
150609992421,2cyclictest0-21swapper/220:35:592
150609992219,2cyclictest0-21swapper/200:06:592
150609991916,2cyclictest0-21swapper/221:50:002
231999180,9rtkit-daemon908065-21snmpd19:06:501
231999170,9rtkit-daemon908065-21snmpd19:05:050
150609991715,1cyclictest0-21swapper/221:44:592
150609991612,2cyclictest0-21swapper/222:37:592
150609991411,2cyclictest0-21swapper/219:41:592
150609991210,1cyclictest0-21swapper/222:22:002
150609991210,1cyclictest0-21swapper/222:21:592
1506099930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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