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2026-05-14 - 04:56
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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 May 14, 2026 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
176480899116109,5cyclictest1858704-21kworker/u8:3+events_unbound00:00:140
17648089910796,9cyclictest1771114-21apt-get19:30:040
17648119910595,4cyclictest1832849-21kworker/u8:0+events_unbound22:40:011
17648119910492,9cyclictest1820147-21latency_hist22:00:011
17648119910295,5cyclictest1776386-21kworker/u8:2+events_unbound19:45:031
17648089910090,7cyclictest1791236-21latency_hist20:30:020
1764808999679,7cyclictest1814817-21kworker/u8:3+events_unbound22:35:240
1764808999587,6cyclictest1774526-21kworker/u8:0+events_unbound19:40:020
1764811999481,5cyclictest1840812-21kworker/u8:0+events_unbound23:15:011
1764808999486,6cyclictest1763254-21kworker/u8:3+events_unbound19:15:010
1764808999481,4cyclictest1778288-21kworker/u8:0+events_unbound20:05:250
1764808999481,4cyclictest1778288-21kworker/u8:0+events_unbound20:05:250
1764811999381,4cyclictest1847235-21kworker/u8:1+events_unbound00:10:031
1764808999386,4cyclictest1783012-21kworker/u8:2+events_unbound20:10:020
1764808999288,3cyclictest1847235-21kworker/u8:1+events_unbound23:40:230
1764808999281,8cyclictest1823322-21latency_hist22:10:020
1764811999086,3cyclictest1865381-21kworker/u8:3+flush-179:000:30:251
1764811999082,6cyclictest1813559-21http21:40:001
1764811999076,5cyclictest587478-21kworker/u8:1+events_unbound19:30:141
1764808999086,3cyclictest1800759-21kworker/u8:1+flush-179:021:00:240
1764811998883,4cyclictest1778288-21kworker/u8:0+events_unbound20:15:281
1764811998878,7cyclictest1840834-21latency_hist23:05:011
1764808998878,7cyclictest1213033-21systemd-journal20:35:000
1764808998878,7cyclictest1213033-21systemd-journal20:34:590
1764811998778,6cyclictest1779829-21latency_hist19:55:011
1764808998775,4cyclictest1847235-21kworker/u8:1+events_unbound00:10:230
1764811998679,5cyclictest1800759-21kworker/u8:1+events_unbound21:05:241
1764811998678,6cyclictest1847252-21latency_hist23:25:001
1764808998675,5cyclictest1807179-21kworker/u8:2+events_unbound21:35:170
1764811998579,5cyclictest587478-21kworker/u8:1+events_unbound19:20:231
1764808998569,5cyclictest1814817-21kworker/u8:3+events_unbound22:00:170
1764808998477,5cyclictest1847235-21kworker/u8:1+events_unbound00:05:190
1764808998474,4cyclictest1845568-21kworker/u8:2+events_unbound23:30:200
1764808998469,5cyclictest1850415-21kworker/u8:3+events_unbound23:45:170
1764808998466,6cyclictest1862403-21kworker/u8:0+events_unbound00:25:200
1764811998379,3cyclictest1821773-21kworker/u8:0+flush-179:022:10:231
1764808998374,4cyclictest1847235-21kworker/u8:1+events_unbound23:40:010
1764811998278,3cyclictest1813484-21kworker/u8:1+events_unbound21:40:141
1764808998277,4cyclictest1778288-21kworker/u8:0+flush-179:020:00:250
1764808998074,5cyclictest1763254-21kworker/u8:3+events_unbound19:25:180
1764811997974,4cyclictest1862403-21kworker/u8:0+flush-179:000:25:001
1764811997970,6cyclictest1857048-21latency_hist23:55:011
1764811997873,4cyclictest1792805-21kworker/u8:2+flush-179:020:45:251
1764811997873,4cyclictest1788018-21kworker/u8:3+events_unbound20:20:241
1764811997872,4cyclictest1792805-21kworker/u8:2+events_unbound20:40:141
1764811997861,15cyclictest1774526-21kworker/u8:0+flush-179:019:40:141
1764808997873,4cyclictest1832849-21kworker/u8:0+flush-179:022:55:240
1764808997871,5cyclictest1789650-21latency_hist20:25:010
1764808997869,7cyclictest1213033-21systemd-journal22:20:000
1764808997865,5cyclictest1850415-21kworker/u8:3+events_unbound23:50:220
1764808997862,4cyclictest1814817-21kworker/u8:3+events_unbound21:45:210
1764811997672,3cyclictest1807179-21kworker/u8:2+flush-179:021:25:251
1764811997666,8cyclictest1850679-21apt-get23:35:111
1764811997666,7cyclictest1213033-21systemd-journal00:29:591
1764811997663,4cyclictest1832849-21kworker/u8:0+events_unbound22:55:161
1764808997569,5cyclictest1763254-21kworker/u8:3+flush-179:019:15:140
1764808997569,4cyclictest1792805-21kworker/u8:2+events_unbound20:45:210
1764808997566,7cyclictest1858672-40mandb00:00:010
1764808997562,4cyclictest1803945-21kworker/u8:0+events_unbound21:20:180
1764811997468,5cyclictest1800759-21kworker/u8:1+events_unbound21:10:171
1764811997462,10cyclictest1213033-21systemd-journal21:50:001
1764811997368,4cyclictest1862403-21kworker/u8:0+events_unbound00:15:141
1764811997368,4cyclictest1750869-21kworker/u8:2+flush-179:019:10:161
1764811997366,6cyclictest1858704-21kworker/u8:3+flush-179:000:00:201
1764808997267,4cyclictest1803945-21kworker/u8:0+events_unbound21:25:190
1764808997167,3cyclictest1862403-21kworker/u8:0+flush-179:000:15:150
1764811997065,4cyclictest1803945-21kworker/u8:0+flush-179:021:15:191
1764811996963,4cyclictest1814817-21kworker/u8:3+flush-179:022:05:111
1764808996959,8cyclictest1833120-21/usr/sbin/munin22:40:220
1764808996864,3cyclictest1842464-21kworker/u8:3+flush-179:023:22:300
1764808996863,4cyclictest1825438-21kworker/u8:1+events_unbound22:30:230
1764808996857,9cyclictest1213033-21systemd-journal20:19:590
1764811996752,14cyclictest1778288-21kworker/u8:0+flush-179:020:15:001
1764808996762,4cyclictest587478-21kworker/u8:1+events_unbound19:55:240
1764808996762,4cyclictest1803945-21kworker/u8:0+events_unbound21:15:230
1764808996759,6cyclictest1213033-21systemd-journal23:28:430
1764811996663,2cyclictest1850415-21kworker/u8:3+flush-179:023:45:151
1764811996662,3cyclictest1855750-21kworker/u8:0+flush-179:023:55:251
1764811996661,4cyclictest1800759-21kworker/u8:1+flush-179:021:00:261
1764811996658,5cyclictest1778288-21kworker/u8:0+flush-179:020:05:141
1764811996658,5cyclictest1778288-21kworker/u8:0+flush-179:020:05:131
1764808996662,3cyclictest1800759-21kworker/u8:1+flush-179:021:10:280
1764808996660,5cyclictest1776386-21kworker/u8:2+events_unbound19:45:210
1764811996560,4cyclictest1845568-21kworker/u8:2+events_unbound23:30:191
1764808996560,4cyclictest1814817-21kworker/u8:3+events_unbound22:10:200
1764808996559,4cyclictest1840812-21kworker/u8:0+flush-179:023:15:140
1764811996460,3cyclictest1826552-21kworker/u8:2+events_unbound22:50:231
1764811996460,3cyclictest1797631-21kworker/u8:3+flush-179:020:52:051
1764811996460,3cyclictest1792805-21kworker/u8:2+flush-179:020:35:141
1764808996460,3cyclictest1832849-21kworker/u8:0+flush-179:022:45:200
1764808996459,4cyclictest1789630-21kworker/u8:0+flush-179:020:35:240
1764808996455,6cyclictest1774559-21latency_hist19:40:010
1764808996449,5cyclictest1865297-21kworker/u8:2+events_unbound00:20:160
1764811996358,4cyclictest1825438-21kworker/u8:1+flush-179:022:30:211
1764811996352,4cyclictest1840812-21kworker/u8:0+events_unbound23:05:201
1764808996358,4cyclictest1842411-21kworker/u8:1+flush-179:023:10:200
1764808996358,4cyclictest1840812-21kworker/u8:0+flush-179:023:05:150
1764808996357,5cyclictest1818521-21kworker/u8:1+events_unbound21:51:430
1764808996354,7cyclictest1818798-21apt-get21:55:100
1764811996258,3cyclictest1832849-21kworker/u8:0+flush-179:022:45:211
1764811996257,4cyclictest1803945-21kworker/u8:0+flush-179:021:30:261
1764811996255,6cyclictest1792805-21kworker/u8:2+flush-179:021:00:001
1764808996258,3cyclictest1826552-21kworker/u8:2+events_unbound22:50:190
1764808996257,4cyclictest1803945-21kworker/u8:0+flush-179:021:30:220
1764808996257,4cyclictest1800759-21kworker/u8:1+events_unbound21:05:120
1764808996252,8cyclictest1213033-21systemd-journal21:45:000
1764811996157,3cyclictest1778288-21kworker/u8:0+events_unbound20:00:241
1764808996157,3cyclictest1862403-21kworker/u8:0+events_unbound00:35:230
1764808996155,4cyclictest1825438-21kworker/u8:1+flush-179:022:25:160
1764811996055,4cyclictest1847235-21kworker/u8:1+flush-179:023:40:151
1764808996056,3cyclictest587478-21kworker/u8:1+flush-179:019:20:250
1764808996055,4cyclictest1792805-21kworker/u8:2+events_unbound20:50:220
1764808996051,4cyclictest1792805-21kworker/u8:2+events_unbound20:40:230
1764811995955,3cyclictest1862403-21kworker/u8:0+events_unbound00:35:251
1764811995955,3cyclictest1814817-21kworker/u8:3+events_unbound22:00:441
1764811995954,4cyclictest1840812-21kworker/u8:0+flush-179:023:25:241
1764811995954,4cyclictest1814817-21kworker/u8:3+flush-179:022:20:251
1764811995751,5cyclictest1772936-21kworker/u8:3+flush-179:019:35:251
1764808995753,3cyclictest1776386-21kworker/u8:2+flush-179:019:50:150
1764811995652,3cyclictest1832849-21kworker/u8:0+events_unbound22:40:181
1764811995449,4cyclictest587478-21kworker/u8:1+events_unbound19:18:431
1764811995349,3cyclictest1814817-21kworker/u8:3+events_unbound22:15:231
1764811995349,3cyclictest1814817-21kworker/u8:3+events_unbound21:50:241
1764808995245,5cyclictest1800781-21latency_hist21:00:020
1764811995046,3cyclictest1763254-21kworker/u8:3+events_unbound19:25:161
1764808994944,4cyclictest1825438-21kworker/u8:1+flush-179:022:24:560
4577091480,14ptp4l61490irq/134-eno1-TxRx-019:09:593
1764811994844,3cyclictest587478-21kworker/u8:1+events_unbound19:55:211
1764811994743,3cyclictest1789630-21kworker/u8:0+flush-179:020:25:271
1764811994739,3cyclictest1842411-21kworker/u8:1+events_unbound23:15:191
1764811994641,4cyclictest1814817-21kworker/u8:3+events_unbound22:27:221
1764808994641,4cyclictest1826552-21kworker/u8:2+flush-179:023:00:250
1764811994541,3cyclictest1847235-21kworker/u8:1+events_unbound00:05:251
1764808994440,3cyclictest1865381-21kworker/u8:3+flush-179:000:30:250
1764817994139,1cyclictest0-21swapper/300:26:593
1764817994137,2cyclictest0-21swapper/320:57:593
176481799400,38cyclictest1831289-21turbostat22:35:003
1764813994038,1cyclictest0-21swapper/221:09:592
176481399400,1cyclictest0-21swapper/200:16:592
1764811994034,4cyclictest1808745-21latency_hist21:25:021
176481399390,36cyclictest0-21swapper/223:09:552
176481799380,37cyclictest1845666-21turbostat23:20:003
176481399380,36cyclictest0-21swapper/223:26:592
176481399380,36cyclictest0-21swapper/223:11:592
176481399380,36cyclictest0-21swapper/200:22:582
176481399380,36cyclictest0-21swapper/200:13:592
176481399380,2cyclictest0-21swapper/223:37:002
1764811993834,3cyclictest1789630-21kworker/u8:0+events_unbound20:34:451
1764811993834,3cyclictest1789630-21kworker/u8:0+events_unbound20:34:451
1764811993831,5cyclictest1764705-21latency_hist19:10:011
1764817993735,1cyclictest0-21swapper/319:54:003
1764813993734,2cyclictest0-21swapper/223:54:552
1764813993734,2cyclictest0-21swapper/221:23:002
1764813993734,2cyclictest0-21swapper/219:50:582
176481399370,35cyclictest0-21swapper/221:54:002
176481399370,35cyclictest0-21swapper/221:39:002
176481799360,35cyclictest0-21swapper/321:52:593
1764813993633,2cyclictest0-21swapper/222:33:002
1764813993633,2cyclictest0-21swapper/221:00:592
1764813993632,2cyclictest0-21swapper/222:29:552
176481399360,1cyclictest0-21swapper/220:14:562
176481399360,1cyclictest0-21swapper/219:48:582
1764817993533,1cyclictest0-21swapper/319:35:593
1764817993532,2cyclictest0-21swapper/320:11:593
176481799350,1cyclictest0-21swapper/320:48:593
1764817993432,1cyclictest0-21swapper/323:39:553
1764817993332,1cyclictest0-21swapper/322:49:553
1764817993331,1cyclictest0-21swapper/322:09:563
1764817993327,4cyclictest1805567-21turbostat21:15:013
1764813993330,2cyclictest0-21swapper/220:50:592
176481399330,1cyclictest0-21swapper/220:07:002
176481399330,1cyclictest0-21swapper/220:06:592
176481399330,1cyclictest0-21swapper/200:06:002
1764813993229,2cyclictest0-21swapper/219:57:592
1764817993126,4cyclictest1767930-21turbostat19:20:003
1764817993028,1cyclictest0-21swapper/323:32:593
1764817993027,2cyclictest0-21swapper/321:40:023
1764817993025,4cyclictest1840850-21turbostat23:05:013
176481799300,28cyclictest0-21swapper/320:20:133
176481799300,28cyclictest0-21swapper/319:30:023
1764813993027,2cyclictest0-21swapper/220:15:592
4577091290,7ptp4l441ktimers/319:25:013
1764817992927,1cyclictest0-21swapper/319:45:033
1764817992923,4cyclictest1860310-21turbostat00:05:003
176481799290,27cyclictest0-21swapper/323:45:143
176481799290,27cyclictest0-21swapper/322:15:123
1764813992926,2cyclictest0-21swapper/222:57:592
1764813992926,2cyclictest0-21swapper/222:08:592
1764813992926,2cyclictest0-21swapper/221:55:132
1764813992926,2cyclictest0-21swapper/221:25:112
1764813992926,2cyclictest0-21swapper/219:22:592
1764813992926,2cyclictest0-21swapper/219:16:592
1764813992925,2cyclictest0-21swapper/222:20:122
176481399290,27cyclictest0-21swapper/223:15:142
176481399290,27cyclictest0-21swapper/221:40:122
176481399290,27cyclictest0-21swapper/219:40:032
176481399290,27cyclictest0-21swapper/219:32:582
176481399290,27cyclictest0-21swapper/219:10:122
4577091280,7ptp4l61490irq/134-eno1-TxRx-021:25:013
4577091280,7ptp4l61490irq/134-eno1-TxRx-021:20:003
4577091280,7ptp4l441ktimers/321:30:013
4577091280,6ptp4l441ktimers/320:30:013
1764817992826,1cyclictest0-21swapper/300:00:003
176481799280,27cyclictest0-21swapper/319:40:003
176481799280,26cyclictest0-21swapper/300:30:023
176481799280,26cyclictest0-21swapper/300:10:023
176481799280,1cyclictest0-21swapper/319:25:133
1764813992825,2cyclictest0-21swapper/222:45:132
176481399280,2cyclictest0-21swapper/223:45:592
176481399280,2cyclictest0-21swapper/200:28:592
176481399280,27cyclictest0-21swapper/220:45:132
176481399280,26cyclictest0-21swapper/223:30:592
176481399280,26cyclictest0-21swapper/223:01:592
176481399280,26cyclictest0-21swapper/222:04:592
176481399280,26cyclictest0-21swapper/221:30:122
176481399280,26cyclictest0-21swapper/219:35:132
4577091270,6ptp4l441ktimers/322:40:003
4577091270,6ptp4l441ktimers/322:25:003
4577091270,6ptp4l441ktimers/322:00:003
4577091270,6ptp4l441ktimers/321:05:003
4577091270,6ptp4l441ktimers/320:55:013
4577091270,6ptp4l441ktimers/300:10:013
1764817992725,1cyclictest0-21swapper/320:18:583
1764817992725,1cyclictest0-21swapper/319:57:003
1764817992724,2cyclictest0-21swapper/320:00:583
176481799270,26cyclictest0-21swapper/322:50:113
176481799270,26cyclictest0-21swapper/300:19:003
176481799270,1cyclictest0-21swapper/323:50:133
176481799270,1cyclictest0-21swapper/323:25:123
1764813992724,2cyclictest0-21swapper/223:56:592
1764813992724,2cyclictest0-21swapper/222:18:592
1764813992724,2cyclictest0-21swapper/220:55:122
176481399270,1cyclictest0-21swapper/223:40:122
4577091260,6ptp4l61490irq/134-eno1-TxRx-023:00:003
4577091260,6ptp4l61490irq/134-eno1-TxRx-020:10:013
4577091260,6ptp4l61490irq/134-eno1-TxRx-020:10:013
4577091260,6ptp4l61490irq/134-eno1-TxRx-019:15:013
4577091260,6ptp4l441ktimers/322:45:003
4577091260,6ptp4l441ktimers/321:10:003
4577091260,4ptp4l441ktimers/321:50:023
4577091260,4ptp4l441ktimers/321:40:013
176481799260,1cyclictest0-21swapper/323:43:593
176481799260,1cyclictest0-21swapper/322:00:123
1764813992623,2cyclictest0-21swapper/223:23:002
176481399260,24cyclictest0-21swapper/221:15:002
176481399260,1cyclictest0-21swapper/220:04:592
1764808992622,3cyclictest0-21swapper/019:10:000
4577091250,6ptp4l61490irq/134-eno1-TxRx-023:25:003
4577091250,5ptp4l441ktimers/320:34:563
4577091250,5ptp4l441ktimers/320:34:553
4577091250,4ptp4l441ktimers/321:35:013
1764817992523,1cyclictest0-21swapper/300:37:593
176481799250,1cyclictest0-21swapper/322:10:583
1764813992522,2cyclictest0-21swapper/222:36:592
1764813992522,2cyclictest0-21swapper/221:46:592
4577091240,5ptp4l61490irq/134-eno1-TxRx-000:25:013
4577091240,4ptp4l441ktimers/323:10:003
4577091240,3ptp4l441ktimers/323:14:553
4577091240,3ptp4l441ktimers/320:40:003
1764813992422,1cyclictest0-21swapper/220:40:132
1764813992421,1cyclictest0-21swapper/220:37:592
1764817992321,1cyclictest0-21swapper/320:42:583
1764813992321,1cyclictest0-21swapper/222:15:002
1764813992321,1cyclictest0-21swapper/220:25:132
1764813992321,1cyclictest0-21swapper/200:39:592
1764813992321,1cyclictest0-21swapper/200:35:002
1764813992219,2cyclictest0-21swapper/221:15:592
1764813992118,2cyclictest0-21swapper/219:26:002
1764817991816,1cyclictest0-21swapper/322:27:003
1764813991815,2cyclictest0-21swapper/222:50:122
1764813991815,2cyclictest0-21swapper/222:41:592
1764813991714,2cyclictest0-21swapper/220:24:542
1764813991512,2cyclictest0-21swapper/200:00:112
1764813991310,2cyclictest0-21swapper/220:30:122
1764813991310,2cyclictest0-21swapper/220:30:112
17648139940,3cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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