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2026-06-26 - 07:14
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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 Fri Jun 26, 2026 00:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
179531699135125,7cyclictest1851690-21latency_hist22:05:011
179531699130116,11cyclictest1888568-40mandb00:00:011
179531699121115,5cyclictest1880819-21kworker/u8:3+flush-179:023:40:001
179531699119105,11cyclictest1213033-21systemd-journal23:00:001
179531599117101,10cyclictest1851470-21kworker/u8:3+flush-179:022:20:250
179531599113107,5cyclictest1859646-21kworker/u8:2+events_unbound23:10:240
179531599112101,8cyclictest1856447-21latency_hist22:20:020
17953159910698,6cyclictest1878736-21latency_hist23:30:010
17953169910594,9cyclictest1213033-21systemd-journal20:10:001
17953159910492,9cyclictest3367279-21cups-browsed00:00:000
17953159910483,6cyclictest1853274-21latency_hist22:10:010
17953169910295,4cyclictest1795258-21kworker/u8:0+flush-179:019:15:161
17953159910190,8cyclictest1859641-21latency_hist22:30:000
1795316999890,5cyclictest1837072-21kworker/u8:1+events_unbound21:25:001
1795316999689,5cyclictest1886924-21kworker/u8:2+events_unbound00:00:301
1795316999687,6cyclictest1859646-21kworker/u8:2+flush-179:023:05:241
1795316999687,6cyclictest1859646-21kworker/u8:2+flush-179:023:05:241
1795316999589,4cyclictest1859646-21kworker/u8:2+flush-179:022:30:171
1795316999585,7cyclictest1822547-21kworker/u8:1+flush-179:020:50:011
1795316999585,7cyclictest1822547-21kworker/u8:1+flush-179:020:50:001
1795315999591,3cyclictest1859646-21kworker/u8:2+events_unbound22:45:140
1795316999487,5cyclictest1804724-21kworker/u8:0+events_unbound19:50:251
1795316999487,4cyclictest1896565-21latency_hist00:25:011
1795315999486,6cyclictest1809520-21latency_hist19:55:010
1795315999482,9cyclictest1812725-21apt-get20:05:010
1795321999386,5cyclictest1832348-21turbostat21:05:003
1795316999382,9cyclictest1864674-21apt-get22:45:111
1795315999287,4cyclictest1838743-21kworker/u8:2+events_unbound21:30:250
1795316999180,9cyclictest1847164-21apt-get21:50:111
1795321999083,5cyclictest1806359-21turbostat19:45:003
1795315999079,8cyclictest1821470-21diskstats20:30:160
1795316998881,4cyclictest1862820-21latency_hist22:40:011
1795316998875,5cyclictest1832376-21kworker/u8:3+events_unbound21:15:021
1795315998878,8cyclictest1859899-21apt-get22:30:120
1795316998778,6cyclictest1873392-21kworker/u8:0+flush-179:023:50:151
1795316998778,6cyclictest1873392-21kworker/u8:0+flush-179:023:50:151
1795316998778,6cyclictest1809555-21kworker/u8:3+flush-179:019:55:251
1795315998774,9cyclictest1812710-21kworker/u8:0+flush-179:020:20:010
1795321998577,6cyclictest1901343-21turbostat00:40:003
1795321998577,6cyclictest1901343-21turbostat00:40:003
1795316998578,5cyclictest1809555-21kworker/u8:3+flush-179:020:25:211
1795316998577,5cyclictest1830697-21kworker/u8:2+flush-179:021:00:201
1795316998576,7cyclictest1844408-21kworker/u8:1+flush-179:022:40:131
1795316998576,6cyclictest1795258-21kworker/u8:0+events_unbound19:10:141
1795316998572,10cyclictest1869741-21diskstats23:00:151
1795315998580,4cyclictest1830697-21kworker/u8:2+events_unbound21:02:130
1795316998474,7cyclictest1789211-21kworker/u8:1+flush-179:019:25:201
1795316998376,4cyclictest1822547-21kworker/u8:1+flush-179:020:40:191
1795315998372,6cyclictest1861771-21diskstats22:35:160
1795316998275,5cyclictest1859646-21kworker/u8:2+flush-179:023:20:001
1795316998274,6cyclictest1830697-21kworker/u8:2+flush-179:021:05:251
1795315998275,5cyclictest1801826-21apt-get19:30:110
1795316998172,6cyclictest1859646-21kworker/u8:2+flush-179:023:20:141
1795316998168,4cyclictest1873392-21kworker/u8:0+events_unbound23:45:001
1795315998169,9cyclictest1825960-21apt-get20:45:120
1795315998169,9cyclictest1825960-21apt-get20:45:120
1795315998075,4cyclictest1809555-21kworker/u8:3+events_unbound20:37:120
1795315998069,8cyclictest1213033-21systemd-journal22:00:000
1795316997972,4cyclictest1838747-21kworker/u8:3+events_unbound21:30:121
1795316997971,6cyclictest1798354-21kworker/u8:3+flush-179:019:35:221
1795316997870,4cyclictest1859646-21kworker/u8:2+flush-179:022:50:251
1795315997868,8cyclictest1797024-21/usr/sbin/munin19:15:230
1795315997773,3cyclictest1873392-21kworker/u8:0+events_unbound23:24:550
1795315997772,4cyclictest1892021-21kworker/u8:2+events_unbound00:24:130
1795316997669,5cyclictest1844408-21kworker/u8:1+flush-179:022:25:231
1795315997672,3cyclictest1886924-21kworker/u8:2+events_unbound00:00:250
1795315997668,5cyclictest1789211-21kworker/u8:1+flush-179:019:30:000
1795315997666,8cyclictest1828886-21apt-get20:55:030
1795315997665,8cyclictest1832589-21apt-get21:05:120
1795315997663,10cyclictest1809555-21kworker/u8:3+flush-179:020:15:000
1795316997569,4cyclictest1890156-21kworker/u8:0+events_unbound00:35:001
1795316997568,5cyclictest1838743-21kworker/u8:2+flush-179:021:45:161
1795316997567,6cyclictest1846897-21kworker/u8:0+events_unbound21:55:251
1795316997567,6cyclictest1817790-21kworker/u8:2+flush-179:020:35:161
1795316997567,5cyclictest1858056-21latency_hist22:25:001
1795316997566,7cyclictest1892021-21kworker/u8:2+flush-179:000:25:151
1795315997571,3cyclictest1832376-21kworker/u8:3+events_unbound21:12:570
1795316997467,5cyclictest1845323-21latency_hist21:45:011
1795316997460,11cyclictest1213033-21systemd-journal00:15:001
1795316997460,11cyclictest1213033-21systemd-journal00:15:001
1795315997468,5cyclictest1892021-21kworker/u8:2+events_unbound00:10:210
1795315997468,5cyclictest1892021-21kworker/u8:2+events_unbound00:10:210
1795315997464,8cyclictest1842386-21apt-get21:35:120
1795315997463,8cyclictest1213033-21systemd-journal00:10:000
1795315997460,11cyclictest1827281-21kworker/u8:0+events_unbound20:50:240
1795316997364,5cyclictest1873392-21kworker/u8:0+flush-179:023:45:171
1795315997363,7cyclictest1844408-21kworker/u8:1+flush-179:021:45:000
1795316997266,5cyclictest1832376-21kworker/u8:3+flush-179:021:15:161
1795316997262,8cyclictest1789211-21kworker/u8:1+flush-179:019:35:001
1795315997267,4cyclictest1832376-21kworker/u8:3+events_unbound21:15:180
1795315997262,7cyclictest1867589-21latency_hist22:55:010
1795316997165,4cyclictest1892021-21kworker/u8:2+events_unbound00:40:021
1795316997165,4cyclictest1892021-21kworker/u8:2+events_unbound00:40:011
1795316997164,5cyclictest1873392-21kworker/u8:0+events_unbound23:30:021
1795316997162,6cyclictest1859646-21kworker/u8:2+events_unbound23:10:211
1795315997167,3cyclictest1886924-21kworker/u8:2+events_unbound23:53:130
1795315997167,3cyclictest1886924-21kworker/u8:2+events_unbound23:53:120
1795315997162,6cyclictest1859646-21kworker/u8:2+flush-179:023:05:170
1795315997162,6cyclictest1859646-21kworker/u8:2+flush-179:023:05:160
1795315997065,4cyclictest1844408-21kworker/u8:1+events_unbound22:12:120
1795315996960,7cyclictest1812710-21kworker/u8:0+flush-179:020:20:230
1795316996864,3cyclictest1846897-21kworker/u8:0+flush-179:022:05:171
1795316996863,3cyclictest1809555-21kworker/u8:3+events_unbound20:00:201
1795316996857,9cyclictest1816399-21apt-get20:15:111
1795315996864,3cyclictest1873392-21kworker/u8:0+events_unbound23:34:560
1795315996863,4cyclictest1850054-21kworker/u8:2+events_unbound22:00:030
1795316996762,4cyclictest1812710-21kworker/u8:0+flush-179:020:20:211
1795315996757,8cyclictest1898389-21/usr/sbin/munin00:30:240
1795315996753,10cyclictest1807927-21kworker/u8:1+flush-179:020:05:210
1795316996650,13cyclictest1213033-21systemd-journal19:46:121
1795316996559,4cyclictest1884827-21kworker/u8:1+events_unbound00:05:261
1795316996556,6cyclictest1805002-21/usr/sbin/munin19:40:171
1795316996551,11cyclictest1213033-21systemd-journal00:20:001
1795315996561,3cyclictest1859646-21kworker/u8:2+events_unbound22:58:080
1795315996455,6cyclictest1882446-21apt-get23:40:110
1795316996356,5cyclictest1809555-21kworker/u8:3+flush-179:020:35:001
1795316996344,17cyclictest1789211-21kworker/u8:1+flush-179:019:20:141
1795315996359,3cyclictest1789211-21kworker/u8:1+events_unbound19:20:020
179531999620,60cyclictest0-21swapper/200:37:002
179531999620,60cyclictest0-21swapper/200:36:592
1795316996254,6cyclictest1795174-21latency_hist19:10:021
1795316996155,4cyclictest1859646-21kworker/u8:2+flush-179:023:25:161
1795315996157,3cyclictest1822547-21kworker/u8:1+events_unbound20:40:250
1795315996056,3cyclictest1893414-21kworker/u8:3+events_unbound00:27:130
1795315996054,4cyclictest1789211-21kworker/u8:1+flush-179:019:15:010
1795315996048,9cyclictest1869453-21apt-get23:00:100
1795316995954,4cyclictest1827281-21kworker/u8:0+flush-179:020:55:151
1795316995951,5cyclictest1844408-21kworker/u8:1+events_unbound22:15:121
1795316995946,4cyclictest1809555-21kworker/u8:3+events_unbound20:10:151
1795321995856,1cyclictest0-21swapper/320:01:593
1795316995743,10cyclictest1827281-21kworker/u8:0+flush-179:020:50:111
1795315995545,8cyclictest1900001-21apt-get00:35:120
1795315995545,8cyclictest1900001-21apt-get00:35:120
1795315995447,4cyclictest1798354-21kworker/u8:3+flush-179:019:35:260
1795316995345,6cyclictest1213033-21systemd-journal22:15:011
1795315995349,3cyclictest1798354-21kworker/u8:3+events_unbound19:42:490
1795319995148,2cyclictest0-21swapper/221:46:002
1795315995142,7cyclictest1844408-21kworker/u8:1+events_unbound21:50:130
1795319995047,2cyclictest0-21swapper/219:21:592
1795315995045,4cyclictest1880565-21kworker/u8:2+flush-179:023:35:160
1795315995040,8cyclictest1838743-21kworker/u8:2+flush-179:021:25:110
1795321994846,1cyclictest0-21swapper/322:55:003
1795316994842,4cyclictest1838743-21kworker/u8:2+flush-179:021:25:161
1795316994840,6cyclictest1835479-21kworker/u8:0+events_unbound21:35:131
1795315994844,3cyclictest1859646-21kworker/u8:2+events_unbound23:16:140
1795315994844,3cyclictest1859646-21kworker/u8:2+events_unbound22:40:010
1795315994838,8cyclictest1213033-21systemd-journal00:17:120
4577091470,12ptp4l441ktimers/319:09:553
1795315994743,3cyclictest1884827-21kworker/u8:1+events_unbound23:47:110
1795315994642,3cyclictest1807927-21kworker/u8:1+events_unbound19:55:010
179532199450,43cyclictest1853287-21turbostat22:10:003
1795315994540,2cyclictest1846919-21ls21:50:000
179532199440,4cyclictest1822523-21turbostat20:35:003
1795321994337,5cyclictest1833923-21turbostat21:10:003
1795315994339,3cyclictest1804724-21kworker/u8:0+events_unbound19:48:000
1795315994234,6cyclictest1820925-21latency_hist20:30:010
1795321994134,5cyclictest1851695-21turbostat22:05:003
1795321994035,4cyclictest1828884-21turbostat20:55:003
179532199400,5cyclictest1837104-21turbostat21:20:003
179532199400,38cyclictest1846916-21turbostat21:54:553
179532199400,38cyclictest1799998-21turbostat19:25:003
1795319994037,2cyclictest0-21swapper/200:14:592
1795319994037,2cyclictest0-21swapper/200:14:592
1795321993934,4cyclictest1843726-21turbostat21:39:593
179532199390,38cyclictest1883777-21turbostat23:45:003
179532199390,37cyclictest1880592-21turbostat23:34:593
179531599390,37cyclictest714-21Xorg21:22:580
1795321993833,4cyclictest1824119-21turbostat20:39:593
1795321993732,4cyclictest1838710-21turbostat21:24:593
179532199370,2cyclictest0-21swapper/323:53:593
179532199370,2cyclictest0-21swapper/323:53:583
1795319993733,2cyclictest0-21swapper/200:04:552
1795321993634,1cyclictest0-21swapper/320:44:553
1795321993634,1cyclictest0-21swapper/320:29:593
1795321993631,4cyclictest1882203-21turbostat23:40:013
1795321993629,5cyclictest1869198-21turbostat23:00:003
179532199360,35cyclictest0-21swapper/323:18:003
179532199360,1cyclictest0-21swapper/323:10:003
179532199360,1cyclictest0-21swapper/323:09:593
1795319993633,2cyclictest0-21swapper/223:18:592
1795319993633,2cyclictest0-21swapper/219:37:002
1795321993533,1cyclictest0-21swapper/322:11:593
1795319993532,2cyclictest0-21swapper/222:30:592
1795319993532,2cyclictest0-21swapper/221:30:592
1795321993431,2cyclictest0-21swapper/323:03:593
1795321993431,2cyclictest0-21swapper/322:32:593
1795321993431,2cyclictest0-21swapper/300:16:593
1795321993429,4cyclictest1878749-21turbostat23:30:003
1795319993432,1cyclictest0-21swapper/223:07:592
1795319993432,1cyclictest0-21swapper/223:07:582
1795319993431,2cyclictest0-21swapper/220:49:562
1795319993431,2cyclictest0-21swapper/220:49:562
1795321993327,4cyclictest1830752-21turbostat21:00:003
1795321993327,4cyclictest1814568-21turbostat20:10:003
1795319993329,2cyclictest0-21swapper/221:26:592
1795321993230,1cyclictest0-21swapper/322:24:593
1795321993230,1cyclictest0-21swapper/319:34:563
1795321993230,1cyclictest0-21swapper/300:09:553
1795321993229,2cyclictest0-21swapper/320:16:593
1795319993230,1cyclictest0-21swapper/221:19:592
1795319993229,2cyclictest0-21swapper/223:36:582
179531999320,2cyclictest0-21swapper/200:21:582
179532199310,30cyclictest0-21swapper/321:30:593
1795319993128,2cyclictest0-21swapper/219:10:582
179532199300,2cyclictest0-21swapper/320:45:133
179532199300,2cyclictest0-21swapper/320:45:133
1795319993028,1cyclictest0-21swapper/223:50:002
1795319993027,2cyclictest0-21swapper/223:30:012
1795319993027,2cyclictest0-21swapper/222:20:142
1795319993027,2cyclictest0-21swapper/222:17:582
1795319993027,2cyclictest0-21swapper/221:11:592
1795319993027,2cyclictest0-21swapper/219:57:592
179531999300,28cyclictest0-21swapper/222:00:122
179531999300,28cyclictest0-21swapper/221:00:002
179531999300,28cyclictest0-21swapper/200:05:142
179531999300,27cyclictest0-21swapper/200:00:012
4577091290,7ptp4l441ktimers/319:20:003
4577091290,6ptp4l441ktimers/323:25:013
4577091290,6ptp4l441ktimers/300:15:013
4577091290,6ptp4l441ktimers/300:15:013
1795321992927,1cyclictest0-21swapper/319:35:133
1795321992927,1cyclictest0-21swapper/319:10:583
1795321992924,4cyclictest1816155-21turbostat20:15:003
1795321992923,5cyclictest1885374-21turbostat23:50:003
179532199290,1cyclictest0-21swapper/321:55:123
1795319992926,2cyclictest0-21swapper/221:40:112
1795319992926,2cyclictest0-21swapper/220:05:022
1795319992926,2cyclictest0-21swapper/200:26:592
179531999290,27cyclictest0-21swapper/223:10:132
179531999290,27cyclictest0-21swapper/223:00:122
179531999290,27cyclictest0-21swapper/221:20:132
179531999290,27cyclictest0-21swapper/220:25:122
179531999290,27cyclictest0-21swapper/219:50:122
179531999290,27cyclictest0-21swapper/200:30:132
1795321992826,1cyclictest0-21swapper/323:14:543
179532199280,26cyclictest0-21swapper/322:35:143
1795319992826,1cyclictest0-21swapper/219:44:592
1795319992825,2cyclictest0-21swapper/223:00:002
1795319992825,2cyclictest0-21swapper/222:37:592
1795319992825,2cyclictest0-21swapper/222:25:142
1795319992825,2cyclictest0-21swapper/220:50:592
1795319992825,2cyclictest0-21swapper/219:30:122
179531999280,2cyclictest0-21swapper/220:20:112
179531999280,27cyclictest0-21swapper/223:25:142
179531999280,26cyclictest0-21swapper/219:45:122
179531999280,21cyclictest0-21swapper/220:09:562
179531999280,1cyclictest0-21swapper/220:40:102
4577091270,6ptp4l61490irq/134-eno1-TxRx-021:15:013
4577091270,5ptp4l61490irq/134-eno1-TxRx-020:00:013
1795321992725,1cyclictest0-21swapper/321:44:003
1795321992725,1cyclictest0-21swapper/300:27:593
1795321992725,1cyclictest0-21swapper/300:22:583
179532199270,26cyclictest0-21swapper/321:30:003
1795319992724,2cyclictest0-21swapper/223:54:562
1795319992724,2cyclictest0-21swapper/223:54:552
1795319992724,2cyclictest0-21swapper/222:43:002
179531999270,26cyclictest0-21swapper/221:35:592
179531999270,24cyclictest0-21swapper/222:45:592
179531999270,1cyclictest0-21swapper/223:42:002
4577091260,6ptp4l61490irq/134-eno1-TxRx-019:50:003
4577091260,6ptp4l61490irq/134-eno1-TxRx-000:35:013
4577091260,4ptp4l61490irq/134-eno1-TxRx-019:30:013
1795321992623,2cyclictest0-21swapper/322:40:593
179532199260,24cyclictest1888561-21turbostat00:04:563
1795319992623,2cyclictest0-21swapper/223:21:592
1795319992623,2cyclictest0-21swapper/221:59:562
179531999260,2cyclictest0-21swapper/222:14:002
179531999260,2cyclictest0-21swapper/220:30:592
179531999260,24cyclictest0-21swapper/222:07:592
179531999260,24cyclictest0-21swapper/220:15:132
4577091250,5ptp4l441ktimers/322:19:563
4577091250,4ptp4l441ktimers/322:30:003
1795321992523,1cyclictest0-21swapper/323:56:593
1795321992522,2cyclictest0-21swapper/319:50:133
179532199250,24cyclictest0-21swapper/322:48:583
179532199250,1cyclictest0-21swapper/320:23:593
1795319992521,2cyclictest0-21swapper/219:19:592
1795319992422,1cyclictest0-21swapper/221:01:592
1795319992321,1cyclictest0-21swapper/219:27:592
1795319992320,2cyclictest0-21swapper/221:05:142
1795319992118,2cyclictest0-21swapper/220:14:592
1795319992018,1cyclictest0-21swapper/222:55:002
1795319991815,2cyclictest0-21swapper/200:18:592
1795321991714,2cyclictest1846916-21turbostat21:50:003
179531999119,1cyclictest0-21swapper/221:52:592
179531599111,8cyclictest1795320-21latency_hist19:10:010
17953199974,2cyclictest0-21swapper/220:39:402
17953199930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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