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2025-12-25 - 06:42
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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 Dec 25, 2025 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17945159911299,10cyclictest1807181-21latency_hist19:50:010
1794515998777,7cyclictest1893176-21latency_hist00:15:020
1794519998375,6cyclictest1857838-21latency_hist22:25:011
1794519998163,15cyclictest1849918-21kworker/u8:0+flush-179:022:00:251
1794515997870,5cyclictest1804045-21kworker/u8:3+flush-179:019:50:230
1794515997769,5cyclictest1881762-21kworker/u8:0+flush-179:023:40:260
1794519997667,6cyclictest266-21systemd-journal22:45:001
1794519997643,31cyclictest714-21Xorg00:23:591
1794515997661,11cyclictest266-21systemd-journal00:20:000
1794515997566,7cyclictest1840296-21/usr/sbin/munin21:30:240
1794515997469,3cyclictest1841684-21kworker/u8:3+flush-179:021:40:230
1794515997159,9cyclictest266-21systemd-journal23:14:590
1794519996965,3cyclictest1841684-21kworker/u8:3+events_unbound21:55:251
1794519996757,7cyclictest266-21systemd-journal21:15:011
1794515996759,5cyclictest1867413-21kworker/u8:0+events_unbound23:00:000
1794519996659,5cyclictest1799226-21latency_hist19:25:011
1794515996660,4cyclictest1849918-21kworker/u8:0+events_unbound22:10:230
1794515996657,6cyclictest266-21systemd-journal23:35:000
1794515996456,6cyclictest1862620-21latency_hist22:40:010
1794515996452,10cyclictest1815938-21diskstats20:15:150
1794515996356,5cyclictest1898456-21kworker/u8:0+flush-179:000:30:160
1794515996356,5cyclictest1781551-21kworker/u8:1+flush-179:020:30:250
1794515996355,4cyclictest1873985-21kworker/u8:0+flush-179:023:15:170
1794515996352,9cyclictest1877201-21apt-get23:25:130
1794519996246,14cyclictest1835310-21kworker/u8:0+flush-179:021:15:261
1794515996255,5cyclictest1867413-21kworker/u8:0+flush-179:023:00:240
1794515996254,6cyclictest1820437-21latency_hist20:30:010
1794519996151,8cyclictest1896355-21kworker/u8:1+flush-179:000:30:011
1794515996155,5cyclictest1849918-21kworker/u8:0+flush-179:022:20:010
1794515996155,5cyclictest1849918-21kworker/u8:0+flush-179:022:20:010
1794515996154,5cyclictest1804045-21kworker/u8:3+flush-179:020:10:240
1794515996054,4cyclictest1804042-21kworker/u8:2+flush-179:019:40:230
1794519995949,8cyclictest1864464-21apt-get22:45:111
1794515995954,4cyclictest1828684-21kworker/u8:2+flush-179:021:10:000
1794515995953,5cyclictest1880113-21kworker/u8:1+events_unbound00:04:030
1794519995853,4cyclictest1781551-21kworker/u8:1+events_unbound20:42:201
1794519995850,5cyclictest1886467-21kworker/u8:0+events_unbound00:04:001
1794519995848,8cyclictest1781551-21kworker/u8:1+flush-179:019:20:011
1794515995850,6cyclictest1781551-21kworker/u8:1+flush-179:019:20:220
1794515995753,3cyclictest1896355-21kworker/u8:1+flush-179:000:25:200
1794519995652,3cyclictest1849918-21kworker/u8:0+events_unbound22:27:221
1794519995652,3cyclictest1823669-21kworker/u8:3+events_unbound20:50:271
1794515995650,4cyclictest1804045-21kworker/u8:3+events_unbound20:05:230
1794519995551,3cyclictest1873985-21kworker/u8:0+events_unbound23:16:201
1794519995551,3cyclictest1804045-21kworker/u8:3+events_unbound20:14:221
1794519995551,3cyclictest1781551-21kworker/u8:1+events_unbound19:39:211
1794519995546,6cyclictest1883316-21latency_hist23:45:001
1794519995545,8cyclictest1846429-21latency_hist21:50:011
1794519995542,10cyclictest266-21systemd-journal20:25:001
1794515995548,5cyclictest1881710-21latency_hist23:40:010
1794515995547,6cyclictest1884902-21latency_hist23:50:000
1794519995450,3cyclictest1810672-21kworker/u8:2+events_unbound20:31:201
1794519995439,11cyclictest266-21systemd-journal20:40:001
1794515995449,3cyclictest1841626-21kworker/u8:2+flush-179:021:35:210
1794515995447,5cyclictest1841684-21kworker/u8:3+flush-179:022:05:230
1794515995447,5cyclictest1781551-21kworker/u8:1+flush-179:019:30:200
1794515995446,5cyclictest1781551-21kworker/u8:1+flush-179:019:15:150
1794519995345,6cyclictest1828684-21kworker/u8:2+flush-179:020:55:241
1794519995345,6cyclictest1828684-21kworker/u8:2+flush-179:020:55:241
1794515995345,5cyclictest1849873-21latency_hist22:00:010
1794521995227,2cyclictest0-21swapper/200:24:002
1794519995247,4cyclictest1781551-21kworker/u8:1+events_unbound20:25:021
1794519995246,5cyclictest1781551-21kworker/u8:1+events_unbound19:14:391
1794515995249,2cyclictest0-21swapper/000:06:580
1794515995247,4cyclictest1822014-21kworker/u8:0+flush-179:020:40:140
1794515995245,5cyclictest1845081-21kworker/u8:0+events_unbound21:45:230
1794515995244,6cyclictest1873985-21kworker/u8:0+events_unbound23:20:240
1794519995148,2cyclictest1888400-21cups-browsed00:00:001
1794519995147,3cyclictest1886546-21systemd-run23:55:011
1794515995147,3cyclictest1781551-21kworker/u8:1+flush-179:019:35:250
1794515995141,8cyclictest1781551-21kworker/u8:1+flush-179:020:20:200
1794519995046,3cyclictest1898456-21kworker/u8:0+events_unbound00:35:031
1794515994944,4cyclictest1863200-21kworker/u8:2+events_unbound23:05:210
1794515994937,9cyclictest1888335-40logrotate00:00:010
1794515994843,4cyclictest1828684-21kworker/u8:2+flush-179:021:10:170
1794515994835,10cyclictest1831859-21apt-get21:05:000
4577091470,13ptp4l441ktimers/319:09:563
4577091470,13ptp4l441ktimers/319:09:563
1794519994743,3cyclictest1847734-21kworker/u8:1+events_unbound21:54:391
1794515994742,3cyclictest1804045-21kworker/u8:3+events_unbound20:00:190
1794515994742,3cyclictest1788180-21kworker/u8:0+events_unbound19:25:110
1794515994639,5cyclictest1898456-21kworker/u8:0+flush-179:000:40:010
1794515994639,4cyclictest1823669-21kworker/u8:3+flush-179:020:50:160
179451599461,43cyclictest1-21systemd21:23:190
1794519994539,4cyclictest1828684-21kworker/u8:2+flush-179:021:05:011
1794515994540,3cyclictest1880113-21kworker/u8:1+events_unbound23:50:130
1794519994437,5cyclictest266-21systemd-journal20:17:181
1794519994327,12cyclictest1899807-21latency_hist00:35:021
1794515994335,6cyclictest1857850-21basename22:25:000
1794524994239,2cyclictest0-21swapper/322:24:593
1794519994238,3cyclictest1880160-21systemd-run23:35:011
1794519994237,4cyclictest1859405-21kworker/u8:1+events_unbound22:32:231
1794519994234,6cyclictest1867380-21latency_hist22:55:011
179451999423,27cyclictest281ktimers/123:12:001
1794515994237,4cyclictest1886467-21kworker/u8:0+flush-179:000:20:190
1794515994236,5cyclictest1835310-21kworker/u8:0+events_unbound21:15:140
1794521994137,2cyclictest0-21swapper/220:45:592
1794515994135,4cyclictest1864240-21systemd-run22:45:000
1794524994038,1cyclictest0-21swapper/320:45:593
1794524994038,1cyclictest0-21swapper/300:40:003
179452499400,38cyclictest1875347-21turbostat23:20:003
1794521994037,2cyclictest0-21swapper/222:24:582
1794521994037,2cyclictest0-21swapper/200:39:592
179451999401,37cyclictest714-21Xorg22:56:591
1794515994035,4cyclictest1845081-21kworker/u8:0+flush-179:021:50:260
1794515994035,4cyclictest1822014-21kworker/u8:0+flush-179:020:45:210
1794515994034,4cyclictest1835310-21kworker/u8:0+events_unbound21:25:130
1794515994034,4cyclictest1835310-21kworker/u8:0+events_unbound21:25:130
1794524993935,3cyclictest0-21swapper/319:43:003
179452199390,30cyclictest0-21swapper/220:30:592
1794519993936,2cyclictest0-21swapper/121:23:591
1794519993934,4cyclictest1880113-21kworker/u8:1+events_unbound23:49:021
1794519993934,4cyclictest1804042-21kworker/u8:2+events_unbound19:41:371
1794519993934,3cyclictest714-21Xorg00:19:581
1794519993929,6cyclictest0-21swapper/120:06:581
1794521993836,1cyclictest0-21swapper/222:54:592
179452199380,36cyclictest0-21swapper/221:00:592
179452199380,35cyclictest0-21swapper/223:19:592
1794519993834,3cyclictest1835310-21kworker/u8:0+events_unbound21:28:271
1794519993834,3cyclictest1835310-21kworker/u8:0+events_unbound21:28:271
1794519993833,4cyclictest1804045-21kworker/u8:3+events_unbound20:03:001
1794519993832,4cyclictest1859461-21kworker/u8:3+flush-179:023:05:251
1794519993830,6cyclictest1854644-21latency_hist22:15:001
179451999380,2cyclictest0-21swapper/119:29:591
1794515993836,1cyclictest0-21swapper/019:57:590
1794515993834,3cyclictest714-21Xorg20:57:000
1794515993834,3cyclictest714-21Xorg20:56:590
1794515993833,4cyclictest1863200-21kworker/u8:2+flush-179:022:50:240
1794521993734,2cyclictest0-21swapper/220:52:592
1794521993734,2cyclictest0-21swapper/219:46:002
1794521993733,2cyclictest0-21swapper/223:35:582
1794521993733,2cyclictest0-21swapper/221:38:592
1794521993733,2cyclictest0-21swapper/219:42:592
179452199370,36cyclictest0-21swapper/220:02:592
179452199370,35cyclictest0-21swapper/221:55:592
1794519993732,4cyclictest1804045-21kworker/u8:3+events_unbound19:47:001
1794519993732,4cyclictest1781551-21kworker/u8:1+events_unbound19:51:371
1794515993732,4cyclictest1781551-21kworker/u8:1+flush-179:020:35:150
1794515993730,5cyclictest1859438-21cron22:30:000
1794515993728,7cyclictest1859405-21kworker/u8:1+flush-179:022:45:150
1794524993634,1cyclictest0-21swapper/323:35:593
1794524993633,2cyclictest0-21swapper/322:45:003
179452499360,35cyclictest0-21swapper/319:52:583
179452499360,1cyclictest0-21swapper/321:55:593
1794519993632,3cyclictest1876984-21systemd-run23:25:001
1794519993632,3cyclictest1835310-21kworker/u8:0+events_unbound21:37:191
1794519993632,3cyclictest1828684-21kworker/u8:2+events_unbound21:04:011
1794519993631,4cyclictest1781551-21kworker/u8:1+events_unbound19:59:221
1794519993628,5cyclictest0-21swapper/121:34:591
1794524993533,1cyclictest0-21swapper/321:38:593
179452499350,1cyclictest0-21swapper/321:00:593
1794519993531,3cyclictest1854879-21kworker/u8:1+events_unbound22:19:451
1794519993531,3cyclictest1854879-21kworker/u8:1+events_unbound22:19:451
1794519993530,4cyclictest1886539-21kworker/u8:2+events_unbound00:09:011
1794519993515,18cyclictest0-21swapper/123:35:171
1794521993432,1cyclictest0-21swapper/222:44:592
1794519993430,3cyclictest1841684-21kworker/u8:3+events_unbound22:06:011
1794519993430,3cyclictest1841626-21kworker/u8:2+events_unbound21:41:271
1794519993428,3cyclictest714-21Xorg19:31:001
1794515993431,2cyclictest0-21swapper/022:31:590
1794515993426,6cyclictest1849918-21kworker/u8:0+flush-179:022:00:200
1794524993332,1cyclictest0-21swapper/323:30:003
1794524993331,1cyclictest0-21swapper/300:20:583
1794521993330,1cyclictest0-21swapper/223:30:002
1794519993330,2cyclictest0-21swapper/123:03:591
1794519993329,3cyclictest1880113-21kworker/u8:1+events_unbound00:10:101
1794524993229,2cyclictest0-21swapper/321:08:593
1794524993229,1cyclictest0-21swapper/322:36:593
1794524993228,2cyclictest0-21swapper/323:51:583
1794521993229,2cyclictest0-21swapper/221:08:592
1794521993228,2cyclictest0-21swapper/221:10:592
1794521993228,2cyclictest0-21swapper/219:36:582
179452199320,30cyclictest0-21swapper/221:16:592
1794519993228,3cyclictest1878177-21kworker/u8:2+events_unbound23:27:081
1794519993228,3cyclictest1781551-21kworker/u8:1+events_unbound20:48:111
1794519993227,4cyclictest1849918-21kworker/u8:0+events_unbound22:35:471
1794524993129,1cyclictest0-21swapper/323:20:593
1794524993129,1cyclictest0-21swapper/321:10:593
1794524993129,1cyclictest0-21swapper/320:14:553
1794524993129,1cyclictest0-21swapper/319:36:583
1794524993128,2cyclictest0-21swapper/322:19:593
1794524993128,2cyclictest0-21swapper/322:19:593
179452499310,28cyclictest0-21swapper/322:10:123
179452499310,1cyclictest0-21swapper/321:16:593
1794521993127,3cyclictest0-21swapper/222:36:592
1794521993127,2cyclictest0-21swapper/220:14:552
179452199310,2cyclictest0-21swapper/223:49:552
179452199310,29cyclictest0-21swapper/220:20:022
1794524993027,2cyclictest0-21swapper/319:46:593
1794524993027,2cyclictest0-21swapper/319:29:593
179452499300,28cyclictest0-21swapper/320:55:143
179452499300,28cyclictest0-21swapper/320:55:133
1794521993027,2cyclictest0-21swapper/223:51:582
1794521993027,2cyclictest0-21swapper/223:20:592
1794521993027,2cyclictest0-21swapper/220:55:132
1794521993027,2cyclictest0-21swapper/220:55:132
179452199300,2cyclictest0-21swapper/200:11:592
179452199300,2cyclictest0-21swapper/200:00:172
179451599300,1cyclictest0-21swapper/019:10:120
1794524992926,2cyclictest1891595-21turbostat00:10:003
1794524992926,2cyclictest0-21swapper/300:25:023
1794524992925,2cyclictest0-21swapper/320:02:003
179452499290,27cyclictest0-21swapper/321:50:033
179452499290,27cyclictest0-21swapper/300:00:173
1794521992925,2cyclictest0-21swapper/223:57:592
1794521992925,2cyclictest0-21swapper/222:56:582
179452199290,27cyclictest0-21swapper/221:50:032
179452199290,27cyclictest0-21swapper/200:25:032
4577091280,7ptp4l61490irq/134-eno1-TxRx-022:30:003
4577091280,7ptp4l441ktimers/323:45:013
4577091280,6ptp4l441ktimers/322:45:013
1794524992826,1cyclictest0-21swapper/323:58:003
1794524992826,1cyclictest0-21swapper/322:56:593
1794524992825,2cyclictest0-21swapper/323:45:123
179452499280,27cyclictest0-21swapper/323:31:583
179452499280,26cyclictest0-21swapper/300:30:143
1794521992826,1cyclictest0-21swapper/222:19:592
1794521992826,1cyclictest0-21swapper/222:19:592
1794521992825,2cyclictest0-21swapper/219:30:002
1794521992823,3cyclictest0-21swapper/221:21:592
179452199280,2cyclictest0-21swapper/222:10:122
4577091270,7ptp4l61490irq/134-eno1-TxRx-000:20:003
4577091270,7ptp4l441ktimers/320:35:003
4577091270,6ptp4l441ktimers/322:35:003
4577091270,6ptp4l441ktimers/321:30:003
4577091270,6ptp4l441ktimers/321:30:003
4577091270,6ptp4l441ktimers/320:20:003
1794524992725,1cyclictest0-21swapper/320:20:023
1794524992725,1cyclictest0-21swapper/319:20:593
1794524992724,2cyclictest0-21swapper/322:05:133
1794524992724,2cyclictest0-21swapper/319:30:593
1794524992724,2cyclictest0-21swapper/319:14:593
1794521992724,2cyclictest0-21swapper/222:46:002
1794521992724,2cyclictest0-21swapper/220:36:592
1794521992724,1cyclictest0-21swapper/200:10:012
1794521992723,2cyclictest0-21swapper/219:17:592
179452199270,25cyclictest0-21swapper/221:34:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-022:55:003
4577091260,6ptp4l441ktimers/323:05:013
4577091260,6ptp4l441ktimers/320:40:003
4577091260,5ptp4l441ktimers/321:45:003
4577091260,5ptp4l441ktimers/320:45:003
1794524992624,1cyclictest0-21swapper/321:21:593
1794524992624,1cyclictest0-21swapper/319:17:593
179452499260,25cyclictest1846444-21turbostat21:50:003
179452499260,25cyclictest0-21swapper/320:53:593
179452499260,24cyclictest0-21swapper/323:05:133
1794521992623,2cyclictest0-21swapper/223:06:592
1794521992623,2cyclictest0-21swapper/221:28:592
1794521992623,2cyclictest0-21swapper/221:28:592
1794521992623,2cyclictest0-21swapper/219:32:312
1794521992623,2cyclictest0-21swapper/219:20:582
1794521992623,2cyclictest0-21swapper/200:30:142
1794521992623,1cyclictest0-21swapper/219:15:002
1794521992622,2cyclictest0-21swapper/223:31:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-020:00:003
4577091250,5ptp4l441ktimers/320:30:013
4577091250,4ptp4l441ktimers/322:04:543
1794524992523,1cyclictest0-21swapper/323:11:593
1794524992523,1cyclictest0-21swapper/320:06:583
1794521992523,1cyclictest0-21swapper/223:02:592
1794521992522,2cyclictest0-21swapper/223:12:002
1794521992522,2cyclictest0-21swapper/222:05:122
1794521992521,2cyclictest0-21swapper/200:16:582
179452199250,2cyclictest0-21swapper/220:05:162
4577091240,4ptp4l441ktimers/321:34:553
231999240,12rtkit-daemon1792670-21apt-get19:05:050
231999240,12rtkit-daemon1792670-21apt-get19:05:040
1794521992420,2cyclictest0-21swapper/219:55:142
1794521992320,2cyclictest0-21swapper/221:45:122
1794524992220,1cyclictest0-21swapper/300:13:593
1794521992220,1cyclictest0-21swapper/220:30:002
1794521992220,1cyclictest0-21swapper/219:54:592
1794521992219,2cyclictest0-21swapper/220:41:592
1794521992118,2cyclictest0-21swapper/222:30:002
1794519992118,2cyclictest0-21swapper/119:10:011
1794519992118,2cyclictest0-21swapper/119:10:011
1794521991916,2cyclictest0-21swapper/223:40:142
1794521991916,2cyclictest0-21swapper/222:00:592
1794521991815,2cyclictest0-21swapper/221:40:592
1794521991513,1cyclictest0-21swapper/220:19:592
179452199129,2cyclictest0-21swapper/222:32:002
17945219930,1cyclictest0-21swapper/219:10:022
17945219930,1cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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