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2026-08-27 - 07:47
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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 792 highest latencies:
System rackeslot6.osadl.org (updated Thu Aug 27, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
208228199132122,7cyclictest2106033-21latency_hist20:25:011
208228199127117,7cyclictest2094889-21latency_hist19:50:001
208228199116102,11cyclictest1213033-21systemd-journal19:20:001
208228199114106,5cyclictest2154030-21apt-get22:55:031
20822799911191,18cyclictest2109208-21latency_hist20:35:000
208227999109103,4cyclictest2149304-21kworker/u8:3+flush-179:023:00:160
208227999109101,6cyclictest2178515-21kworker/u8:2+events_unbound00:10:010
208228199108100,6cyclictest2134971-21kworker/u8:1+flush-179:022:35:231
208227999107103,3cyclictest191rcuc/021:45:000
208227999107100,5cyclictest2157512-21kworker/u8:0+events_unbound00:40:010
20822819910598,5cyclictest2082168-21kworker/u8:1+flush-179:019:15:011
20822819910591,10cyclictest1213033-21systemd-journal21:55:001
20822799910497,5cyclictest2091956-21kworker/u8:0+flush-179:019:55:170
20822799910397,4cyclictest2144471-21kworker/u8:2+events_unbound22:50:010
20822799910295,5cyclictest2160632-21kworker/u8:1+flush-179:023:55:240
20822799910193,5cyclictest2104484-21kworker/u8:2+flush-179:020:20:010
20822799910093,4cyclictest2117393-21kworker/u8:0+events_unbound21:25:150
20822799910092,7cyclictest2134971-21kworker/u8:1+events_unbound22:45:000
2082279999993,4cyclictest2160632-21kworker/u8:1+events_unbound23:15:000
2082281999887,9cyclictest2149524-21apt-get22:40:101
208228199980,2cyclictest714-21Xorg21:56:581
2082279999789,6cyclictest2157512-21kworker/u8:0+flush-179:000:25:250
2082279999690,5cyclictest2099663-21kworker/u8:0+flush-179:020:30:010
2082281999383,8cyclictest2152696-21apt-get22:50:121
2082279999386,5cyclictest2099663-21kworker/u8:0+flush-179:020:05:230
2082279999286,4cyclictest2112385-21kworker/u8:2+flush-179:020:45:150
2082279999284,5cyclictest2117393-21kworker/u8:0+flush-179:021:00:000
2082281999181,8cyclictest2160632-21kworker/u8:1+flush-179:000:20:261
2082279999183,6cyclictest2146060-21kworker/u8:0+flush-179:022:30:010
2082281999083,5cyclictest2124043-21kworker/u8:1+flush-179:021:25:211
2082281999079,8cyclictest2157512-21kworker/u8:0+flush-179:000:25:251
2082281999075,11cyclictest510-21rs:main1
2082281999071,16cyclictest2160632-21kworker/u8:1+flush-179:023:45:231
2082279999084,4cyclictest2069495-21kworker/u8:3+flush-179:019:25:260
2082279999083,5cyclictest2117393-21kworker/u8:0+events_unbound21:10:220
2082279998981,6cyclictest2088569-21kworker/u8:1+flush-179:020:10:200
2082281998875,9cyclictest1213033-21systemd-journal00:03:591
2082279998882,4cyclictest2134971-21kworker/u8:1+flush-179:022:20:230
2082279998877,7cyclictest2155857-21kworker/u8:1+flush-179:023:00:000
2082281998777,7cyclictest2144486-21latency_hist22:25:011
2082281998774,9cyclictest2180068-21latency_hist00:15:001
2082281998770,12cyclictest1213033-21systemd-journal19:55:001
2082281998769,13cyclictest1213033-21systemd-journal00:05:131
2082279998780,5cyclictest2160632-21kworker/u8:1+flush-179:023:35:160
2082279998677,7cyclictest2088569-21kworker/u8:1+flush-179:020:20:210
2082281998567,15cyclictest2160632-21kworker/u8:1+flush-179:023:35:201
2082279998579,5cyclictest2160632-21kworker/u8:1+flush-179:000:04:000
2082279998579,4cyclictest2160632-21kworker/u8:1+flush-179:023:15:280
2082279998575,8cyclictest2122451-21apt-get21:15:110
2082279998474,7cyclictest2088569-21kworker/u8:1+flush-179:019:45:000
2082279998376,5cyclictest2069495-21kworker/u8:3+flush-179:019:30:170
2082279998374,6cyclictest2069495-21kworker/u8:3+events_unbound19:35:240
2082279998373,7cyclictest2117393-21kworker/u8:0+flush-179:021:45:230
2082279998372,8cyclictest2130151-21latency_hist21:40:010
2082281998270,10cyclictest2116069-21/usr/sbin/munin20:55:251
2082279998279,2cyclictest1-21systemd22:10:000
2082279998279,2cyclictest1-21systemd22:10:000
2082279998275,4cyclictest2141292-21latency_hist22:15:000
2082279998175,4cyclictest2160632-21kworker/u8:1+flush-179:023:45:160
2082279998174,4cyclictest2130408-21kworker/u8:2+events_unbound22:00:120
2082279998066,6cyclictest2160632-21kworker/u8:1+events_unbound00:15:130
2082279997973,4cyclictest2069495-21kworker/u8:3+flush-179:019:15:220
2082279997970,6cyclictest2112385-21kworker/u8:2+flush-179:021:00:210
2082281997870,6cyclictest2136774-21/usr/sbin/munin22:00:231
2082281997867,8cyclictest1213033-21systemd-journal23:25:001
2082281997862,11cyclictest2099663-21kworker/u8:0+flush-179:020:35:151
2082279997871,5cyclictest2134971-21kworker/u8:1+events_unbound22:40:000
2082279997772,3cyclictest2149304-21kworker/u8:3+flush-179:023:05:220
2082279997771,4cyclictest2126968-21kworker/u8:3+flush-179:021:30:250
2082281997666,7cyclictest2157512-21kworker/u8:0+flush-179:023:15:001
2082281997662,10cyclictest1213033-21systemd-journal20:20:001
2082279997668,5cyclictest2088569-21kworker/u8:1+events_unbound19:45:190
2082279997566,6cyclictest2134971-21kworker/u8:1+events_unbound22:35:000
2082279997566,6cyclictest2134971-21kworker/u8:1+events_unbound22:34:590
2082279997468,4cyclictest2112385-21kworker/u8:2+flush-179:020:51:100
2082279997467,5cyclictest2099663-21kworker/u8:0+flush-179:020:35:220
2082281997361,7cyclictest2112385-21kworker/u8:2+flush-179:020:55:011
2082279997365,5cyclictest2157512-21kworker/u8:0+flush-179:023:30:200
2082281997264,6cyclictest2098043-21kworker/u8:3+flush-179:020:10:001
2082279997267,4cyclictest2134971-21kworker/u8:1+flush-179:022:15:220
2082279997266,3cyclictest2144471-21kworker/u8:2+flush-179:022:50:180
2082279997265,5cyclictest2130408-21kworker/u8:2+flush-179:021:55:220
2082281997165,4cyclictest2069495-21kworker/u8:3+flush-179:019:30:251
2082279997166,4cyclictest2157512-21kworker/u8:0+flush-179:023:40:220
2082279997165,4cyclictest2157512-21kworker/u8:0+flush-179:000:20:200
2082279997164,5cyclictest2112385-21kworker/u8:2+flush-179:021:05:290
2082281997059,8cyclictest2109201-21kworker/u8:3+flush-179:020:45:011
2082281997055,12cyclictest2157512-21kworker/u8:0+flush-179:000:35:231
2082281996954,11cyclictest1213033-21systemd-journal23:35:001
2082279996964,3cyclictest2069495-21kworker/u8:3+flush-179:019:10:180
2082279996859,6cyclictest2088569-21kworker/u8:1+flush-179:020:02:100
2082286996757,6cyclictest2185123-21turbostat00:30:003
2082285996764,2cyclictest0-21swapper/221:56:592
2082281996759,6cyclictest2138157-21kworker/u8:3+events_unbound22:10:001
2082281996759,6cyclictest2138157-21kworker/u8:3+events_unbound22:09:591
2082281996756,8cyclictest2130408-21kworker/u8:2+flush-179:021:45:211
2082281996752,12cyclictest2069495-21kworker/u8:3+flush-179:019:20:211
2082281996658,6cyclictest2120866-21apt-get21:10:091
2082281996652,10cyclictest1213033-21systemd-journal21:20:001
2082279996660,4cyclictest2157512-21kworker/u8:0+flush-179:000:30:200
2082279996560,4cyclictest2160632-21kworker/u8:1+flush-179:023:50:250
2082279996560,3cyclictest2157512-21kworker/u8:0+flush-179:023:20:160
2082279996559,4cyclictest2069495-21kworker/u8:3+flush-179:019:23:090
2082279996457,5cyclictest2093348-21kworker/u8:2+flush-179:019:50:240
2082281996354,7cyclictest2090653-21diskstats19:35:141
2082281996352,9cyclictest2124062-21apt-get21:20:121
2082279996354,6cyclictest2117393-21kworker/u8:0+flush-179:021:20:150
2082279996256,4cyclictest2157512-21kworker/u8:0+flush-179:023:25:220
2082281996152,6cyclictest2087480-21diskstats19:25:151
2082281996051,6cyclictest2157512-21kworker/u8:0+events_unbound23:25:231
2082281996051,6cyclictest2099669-21latency_hist20:05:021
2082281995849,7cyclictest2157512-21kworker/u8:0+flush-179:023:20:011
2082281995750,5cyclictest2139963-21apt-get22:10:121
2082281995746,8cyclictest2113985-21latency_hist20:50:011
2082279995751,4cyclictest2117393-21kworker/u8:0+flush-179:021:50:160
2082279995749,6cyclictest2109201-21kworker/u8:3+events_unbound20:40:230
2082281995615,25cyclictest2142631-21wc22:15:261
2082281995549,4cyclictest2157512-21kworker/u8:0+flush-179:023:40:181
2082281995543,9cyclictest1213033-21systemd-journal21:35:011
2082279995448,5cyclictest2178515-21kworker/u8:2+events_unbound00:10:140
2082286995352,1cyclictest0-21swapper/300:18:593
2082281995344,6cyclictest2117393-21kworker/u8:0+flush-179:021:35:231
2082286995249,1cyclictest0-21swapper/321:56:593
2082281995246,5cyclictest2149304-21kworker/u8:3+events_unbound23:00:241
2082281995245,6cyclictest2130408-21kworker/u8:2+flush-179:021:40:161
2082281995146,3cyclictest2157512-21kworker/u8:0+events_unbound00:30:201
2082281995142,7cyclictest2149304-21kworker/u8:3+events_unbound23:05:241
2082281995141,6cyclictest2160632-21kworker/u8:1+flush-179:023:50:181
4577091490,13ptp4l441ktimers/319:09:563
2082281994940,6cyclictest2091956-21kworker/u8:0+flush-179:019:55:201
2082281994840,6cyclictest2088569-21kworker/u8:1+events_unbound20:30:141
2082281994537,6cyclictest2144471-21kworker/u8:2+flush-179:022:45:211
2082281994537,5cyclictest2173896-21apt-get23:55:111
2082281994436,7cyclictest0-21swapper/119:40:131
2082281994436,5cyclictest2102839-21latency_hist20:15:011
2082281994417,11cyclictest714-21Xorg22:25:581
2082281994031,7cyclictest2160632-21kworker/u8:1+flush-179:000:15:141
2082281994029,8cyclictest2082128-21latency_hist19:10:011
2082286993937,1cyclictest0-21swapper/323:58:593
208228699390,5cyclictest2101262-21turbostat20:10:013
208228599390,36cyclictest0-21swapper/219:33:582
208228599390,36cyclictest0-21swapper/219:10:592
2082281993916,8cyclictest714-21Xorg22:33:591
2082281993916,8cyclictest714-21Xorg22:33:591
2082281993915,10cyclictest2119662-21perl21:05:171
2082286993836,1cyclictest0-21swapper/322:03:583
208228699380,3cyclictest2113991-21turbostat20:50:003
208228599380,35cyclictest0-21swapper/200:19:552
2082281993832,4cyclictest2106041-21turbostat20:29:551
2082286993734,2cyclictest0-21swapper/300:03:593
2082285993734,2cyclictest0-21swapper/220:07:592
2082285993734,2cyclictest0-21swapper/200:37:002
208228599370,1cyclictest0-21swapper/219:47:592
4577091360,6ptp4l441ktimers/323:25:013
2082286993634,1cyclictest0-21swapper/321:19:563
2082286993633,2cyclictest0-21swapper/323:47:583
2082286993633,2cyclictest0-21swapper/320:29:593
208228699360,35cyclictest0-21swapper/322:19:553
208228699360,35cyclictest0-21swapper/320:33:593
208228699360,1cyclictest0-21swapper/323:19:553
208228699360,1cyclictest0-21swapper/322:08:003
208228699360,1cyclictest0-21swapper/322:08:003
2082285993632,2cyclictest0-21swapper/200:31:582
4577091350,3ptp4l441ktimers/300:35:123
2082285993532,2cyclictest0-21swapper/221:16:592
2082285993532,2cyclictest0-21swapper/221:09:592
2082286993433,1cyclictest0-21swapper/322:45:593
2082286993432,1cyclictest0-21swapper/300:14:563
2082285993432,1cyclictest0-21swapper/220:00:002
2082286993331,1cyclictest0-21swapper/320:15:593
2082285993330,2cyclictest0-21swapper/221:31:592
2082285993329,2cyclictest0-21swapper/222:27:592
208228599330,30cyclictest0-21swapper/222:25:002
2082286993229,2cyclictest0-21swapper/319:17:003
208228699320,31cyclictest2106041-21turbostat20:25:003
2082285993229,2cyclictest0-21swapper/223:59:542
4577091310,9ptp4l441ktimers/320:40:003
2082286993129,1cyclictest0-21swapper/322:59:553
2082286993129,1cyclictest0-21swapper/322:29:553
2082286993129,1cyclictest0-21swapper/319:31:593
2082285993128,2cyclictest0-21swapper/223:28:592
208228599310,2cyclictest0-21swapper/200:22:592
2082286993027,2cyclictest0-21swapper/319:12:593
208228699300,5cyclictest2183538-21turbostat00:25:003
2082285993028,1cyclictest0-21swapper/220:49:592
2082285993027,2cyclictest0-21swapper/221:22:002
2082285993027,2cyclictest0-21swapper/220:55:022
2082285993027,2cyclictest0-21swapper/219:24:592
2082285993027,2cyclictest0-21swapper/219:17:592
2082285993026,2cyclictest0-21swapper/221:36:002
208228599300,2cyclictest0-21swapper/219:50:122
208228599300,28cyclictest0-21swapper/222:15:142
4577091290,6ptp4l61490irq/134-eno1-TxRx-019:25:003
4577091290,6ptp4l441ktimers/323:30:013
2082286992927,1cyclictest0-21swapper/322:30:133
2082286992927,1cyclictest0-21swapper/322:30:123
2082286992926,2cyclictest0-21swapper/320:55:013
208228699290,28cyclictest0-21swapper/323:35:133
208228699290,28cyclictest0-21swapper/321:20:143
208228699290,21cyclictest0-21swapper/300:05:153
2082285992926,2cyclictest0-21swapper/223:00:582
2082285992926,2cyclictest0-21swapper/222:56:002
208228599290,27cyclictest0-21swapper/223:40:032
208228599290,27cyclictest0-21swapper/222:30:132
208228599290,27cyclictest0-21swapper/222:30:122
208228599290,27cyclictest0-21swapper/221:26:592
208228599290,27cyclictest0-21swapper/221:11:592
208228599290,27cyclictest0-21swapper/220:00:102
208228599290,27cyclictest0-21swapper/219:40:122
208228599290,27cyclictest0-21swapper/200:05:162
4577091280,5ptp4l441ktimers/323:54:593
2082286992826,1cyclictest0-21swapper/321:50:133
2082286992826,1cyclictest0-21swapper/319:47:593
2082286992825,2cyclictest0-21swapper/323:40:033
208228699280,2cyclictest0-21swapper/321:05:143
208228699280,26cyclictest0-21swapper/320:00:103
208228699280,26cyclictest0-21swapper/319:50:133
2082285992825,2cyclictest0-21swapper/223:50:132
2082285992825,2cyclictest0-21swapper/223:20:122
2082285992825,2cyclictest0-21swapper/220:40:592
2082285992825,2cyclictest0-21swapper/200:25:132
2082285992824,2cyclictest0-21swapper/220:51:592
208228599280,26cyclictest0-21swapper/223:35:122
208228599280,26cyclictest0-21swapper/220:36:002
4577091270,6ptp4l441ktimers/322:55:013
4577091270,5ptp4l441ktimers/321:34:553
4577091270,5ptp4l441ktimers/320:15:003
4577091270,5ptp4l441ktimers/319:40:013
2082285992724,2cyclictest0-21swapper/222:50:152
2082285992724,2cyclictest0-21swapper/222:44:592
2082285992724,2cyclictest0-21swapper/220:12:592
208228599270,25cyclictest0-21swapper/220:20:142
208228599270,24cyclictest0-21swapper/223:18:582
208228599270,24cyclictest0-21swapper/221:54:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-022:40:003
4577091260,6ptp4l61490irq/134-eno1-TxRx-000:35:003
4577091260,5ptp4l441ktimers/323:34:553
4577091260,5ptp4l441ktimers/323:15:003
4577091260,5ptp4l441ktimers/321:39:553
4577091260,4ptp4l441ktimers/319:45:013
2082286992625,1cyclictest0-21swapper/322:11:593
2082286992623,2cyclictest0-21swapper/323:00:593
208228699260,24cyclictest0-21swapper/322:20:143
208228699260,24cyclictest0-21swapper/319:55:133
2082285992623,2cyclictest0-21swapper/223:32:592
2082285992623,2cyclictest0-21swapper/221:44:562
208228599260,2cyclictest0-21swapper/200:10:122
208228599260,24cyclictest0-21swapper/222:40:002
208228599260,24cyclictest0-21swapper/222:01:592
208228599260,24cyclictest0-21swapper/220:25:592
208228599260,24cyclictest0-21swapper/220:15:122
208228599260,24cyclictest0-21swapper/219:40:002
208228599260,24cyclictest0-21swapper/219:27:592
4577091250,4ptp4l61490irq/134-eno1-TxRx-023:09:553
4577091250,4ptp4l61490irq/134-eno1-TxRx-020:54:563
4577091250,4ptp4l441ktimers/321:49:553
4577091250,4ptp4l441ktimers/321:45:003
4577091250,4ptp4l441ktimers/321:29:553
4577091250,4ptp4l441ktimers/321:15:013
4577091250,3ptp4l61490irq/134-eno1-TxRx-019:29:553
2082286992523,1cyclictest0-21swapper/322:44:583
208228699250,24cyclictest0-21swapper/320:43:593
2082285992522,2cyclictest0-21swapper/222:06:002
2082285992522,2cyclictest0-21swapper/222:05:592
2082285992522,2cyclictest0-21swapper/221:45:132
208228599250,1cyclictest0-21swapper/200:00:592
4577091240,4ptp4l441ktimers/321:04:553
2082285992421,2cyclictest0-21swapper/223:11:002
2082285992319,2cyclictest0-21swapper/220:30:592
2082285992220,1cyclictest0-21swapper/223:50:012
2082285992219,2cyclictest0-21swapper/223:05:122
2082285992219,2cyclictest0-21swapper/221:02:582
2082285991815,2cyclictest0-21swapper/222:13:592
208227999181,13cyclictest2082282-21latency_hist19:10:010
20822859985,2cyclictest0-21swapper/222:46:422
20822859950,4cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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