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2026-07-10 - 07:18
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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 Jul 10, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
194191699157149,6cyclictest2032691-21kworker/u8:1+flush-179:000:00:021
194191399146139,5cyclictest1992097-21latency_hist21:45:020
194191699130121,7cyclictest2044122-21latency_hist00:25:021
194191699129121,6cyclictest2004165-21kworker/u8:1+events_unbound22:55:011
194191399127118,6cyclictest2030795-21kworker/u8:0+flush-179:023:55:000
194191699126121,4cyclictest2023207-21kworker/u8:3+events_unbound00:04:011
194191699126121,4cyclictest2023207-21kworker/u8:3+events_unbound00:04:011
194191699119112,5cyclictest2000296-21kworker/u8:3+events_unbound22:25:011
194191699116111,4cyclictest2039338-21kworker/u8:0+flush-179:000:35:001
19419139910895,9cyclictest1213033-21systemd-journal23:25:000
194191699107102,4cyclictest1953106-21kworker/u8:0+flush-179:019:55:001
19419139910495,7cyclictest1983889-21latency_hist21:20:010
19419169910294,5cyclictest2006653-21kworker/u8:0+events_unbound22:30:271
19419169910293,7cyclictest1213033-21systemd-journal23:30:001
19419139910291,7cyclictest1965859-21latency_hist20:25:010
19419169910090,7cyclictest1995567-21kworker/u8:0+flush-179:022:15:261
1941916999890,5cyclictest2029218-21latency_hist23:40:021
1941916999888,8cyclictest2014605-21kworker/u8:0+flush-179:023:30:181
1941916999790,5cyclictest1970694-21kworker/u8:0+flush-179:021:10:001
1941916999789,6cyclictest2045745-21kworker/u8:2+flush-179:000:35:221
1941916999787,6cyclictest1970694-21kworker/u8:0+flush-179:021:00:161
1941916999690,5cyclictest2014662-21kworker/u8:2+events_unbound23:00:191
1941916999683,10cyclictest1953106-21kworker/u8:0+flush-179:020:00:261
1941916999590,4cyclictest1965839-21kworker/u8:1+flush-179:020:30:011
1941916999588,5cyclictest1953106-21kworker/u8:0+flush-179:020:15:201
1941916999586,7cyclictest1969023-21kworker/u8:2+flush-179:020:55:201
1941913999590,3cyclictest191rcuc/020:45:000
1941913999585,7cyclictest2035845-21apt-get00:00:000
1941916999486,6cyclictest1940183-21kworker/u8:3+flush-179:019:55:191
1941916999387,5cyclictest1970694-21kworker/u8:0+events_unbound21:15:281
1941916999386,5cyclictest1970694-21kworker/u8:0+events_unbound21:30:031
1941913999380,9cyclictest1995567-21kworker/u8:0+events_unbound22:20:000
1941916999284,6cyclictest1983851-21kworker/u8:2+events_unbound21:50:241
1941916999185,4cyclictest2023207-21kworker/u8:3+flush-179:023:20:211
1941916999183,5cyclictest1970694-21kworker/u8:0+flush-179:020:40:201
1941916999182,6cyclictest1961110-21kworker/u8:2+flush-179:020:20:221
1941913999185,4cyclictest1-21systemd23:50:010
1941913999182,6cyclictest1964271-21latency_hist20:20:010
1941916999079,9cyclictest1953106-21kworker/u8:0+flush-179:020:10:011
1941916998983,5cyclictest2032691-21kworker/u8:1+flush-179:000:05:281
1941916998979,7cyclictest2019408-21latency_hist23:10:011
1941916998978,8cyclictest1990469-21kworker/u8:3+flush-179:021:45:001
1941913998980,7cyclictest1974069-21latency_hist20:50:010
1941916998882,4cyclictest2004165-21kworker/u8:1+flush-179:022:45:221
1941916998882,4cyclictest1940183-21kworker/u8:3+flush-179:019:20:201
1941916998781,4cyclictest1983851-21kworker/u8:2+events_unbound21:50:001
1941916998780,4cyclictest2041969-21kworker/u8:2+events_unbound00:15:251
1941916998777,7cyclictest2009868-21latency_hist22:40:011
1941913998779,5cyclictest1945432-21kworker/u8:0+flush-179:019:35:250
1941916998678,5cyclictest1962707-21kworker/u8:3+events_unbound20:30:201
1941916998677,6cyclictest2030795-21kworker/u8:0+events_unbound23:45:021
1941916998479,4cyclictest2023207-21kworker/u8:3+events_unbound23:50:231
1941916998375,5cyclictest1972516-21kworker/u8:1+flush-179:020:50:151
1941916998277,4cyclictest2014605-21kworker/u8:0+flush-179:023:15:271
1941916998277,4cyclictest2014605-21kworker/u8:0+flush-179:023:15:271
1941916998171,6cyclictest1982018-21latency_hist21:15:011
1941913998174,4cyclictest1970694-21kworker/u8:0+flush-179:021:05:010
1941913998069,8cyclictest1213033-21systemd-journal00:10:000
1941913998067,8cyclictest2006653-21kworker/u8:0+flush-179:022:30:010
1941913997971,6cyclictest1954967-21apt-get19:50:110
1941913997963,7cyclictest2014605-21kworker/u8:0+flush-179:023:25:220
1941916997871,5cyclictest2000296-21kworker/u8:3+events_unbound22:10:131
1941913997865,9cyclictest2042500-21kworker/u8:3+flush-179:000:20:230
1941916997769,6cyclictest1940183-21kworker/u8:3+flush-179:019:25:251
1941913997763,11cyclictest1213033-21systemd-journal23:00:000
1941916997670,4cyclictest1995567-21kworker/u8:0+flush-179:022:05:211
1941916997570,4cyclictest2014605-21kworker/u8:0+flush-179:022:55:251
1941916997570,3cyclictest2000296-21kworker/u8:3+flush-179:022:25:231
1941916997569,4cyclictest1970694-21kworker/u8:0+events_unbound20:45:131
1941913997470,3cyclictest1940183-21kworker/u8:3+flush-179:019:10:260
1941913997466,6cyclictest1213033-21systemd-journal22:10:240
1941913997464,8cyclictest1970637-21apt-get20:40:000
1941916997368,4cyclictest1995567-21kworker/u8:0+flush-179:021:55:241
1941916997368,3cyclictest1940183-21kworker/u8:3+flush-179:019:15:211
1941916997368,3cyclictest1940183-21kworker/u8:3+flush-179:019:15:201
1941916997365,6cyclictest1970694-21kworker/u8:0+events_unbound21:20:221
1941916997360,10cyclictest1970623-21latency_hist20:40:001
1941913997359,10cyclictest1213033-21systemd-journal23:35:000
1941913997358,10cyclictest2035906-21kworker/u8:2+flush-179:000:00:180
1941913997358,10cyclictest2035906-21kworker/u8:2+flush-179:000:00:170
1941913997264,6cyclictest2042500-21kworker/u8:3+flush-179:000:25:190
1941913997255,13cyclictest1213033-21systemd-journal19:42:290
1941913997161,7cyclictest1953106-21kworker/u8:0+flush-179:020:10:230
1941913997064,5cyclictest1972516-21kworker/u8:1+flush-179:021:10:240
1941913996965,3cyclictest2006721-21kworker/u8:2+flush-179:022:40:170
1941913996963,4cyclictest2014605-21kworker/u8:0+flush-179:023:00:250
1941913996960,6cyclictest1996070-21diskstats21:55:160
1941916996762,3cyclictest1953106-21kworker/u8:0+events_unbound19:45:151
1941916996762,3cyclictest1953106-21kworker/u8:0+events_unbound19:45:141
1941916996760,5cyclictest1945432-21kworker/u8:0+flush-179:019:35:271
1941916996660,4cyclictest1983851-21kworker/u8:2+flush-179:021:25:281
1941913996660,5cyclictest1992144-21kworker/u8:1+events_unbound21:45:150
1941913996656,8cyclictest1948586-21/usr/sbin/munin19:30:230
1941913996654,9cyclictest1940183-21kworker/u8:3+events_unbound19:25:170
1941916996559,4cyclictest2006721-21kworker/u8:2+flush-179:022:40:221
1941913996557,5cyclictest2004165-21kworker/u8:1+flush-179:022:45:180
1941913996556,7cyclictest1974324-21apt-get20:50:110
1941916996457,5cyclictest1972516-21kworker/u8:1+flush-179:021:35:211
1941916996358,3cyclictest1953106-21kworker/u8:0+events_unbound20:10:201
1941913996358,4cyclictest1983851-21kworker/u8:2+events_unbound21:25:280
1941913996352,8cyclictest2030814-21latency_hist23:45:010
1941913996352,7cyclictest1940183-21kworker/u8:3+flush-179:019:20:110
1941913996256,5cyclictest1979102-21apt-get21:05:130
1941913996256,4cyclictest2032691-21kworker/u8:1+flush-179:000:15:010
1941913996254,5cyclictest2004165-21kworker/u8:1+events_unbound22:20:270
1941913996244,16cyclictest1987555-21/usr/sbin/munin21:30:150
1941913996244,15cyclictest2042540-21latency_hist00:20:010
1941913996156,4cyclictest2014662-21kworker/u8:2+flush-179:023:05:250
1941913996151,7cyclictest2014662-21kworker/u8:2+flush-179:023:35:180
1941913996054,4cyclictest2014662-21kworker/u8:2+flush-179:023:15:190
1941913996054,4cyclictest2014662-21kworker/u8:2+flush-179:023:15:180
1941913996051,7cyclictest2011441-21kworker/u8:3+flush-179:022:50:150
1941913996048,8cyclictest1995567-21kworker/u8:0+flush-179:022:00:190
1941913995955,2cyclictest1972516-21kworker/u8:1+events_unbound21:35:210
1941913995750,5cyclictest1953106-21kworker/u8:0+flush-179:019:55:200
1941913995745,9cyclictest1213033-21systemd-journal20:05:010
1941913995649,5cyclictest1940183-21kworker/u8:3+events_unbound19:15:200
1941913995649,5cyclictest1940183-21kworker/u8:3+events_unbound19:15:200
1941913995647,7cyclictest2014662-21kworker/u8:2+flush-179:023:10:150
1941913995647,6cyclictest1957866-21kworker/u8:1+flush-179:020:05:010
1941913995549,5cyclictest2032691-21kworker/u8:1+flush-179:000:30:270
1941913995548,5cyclictest1970694-21kworker/u8:0+flush-179:021:20:260
1941916995448,5cyclictest2032691-21kworker/u8:1+events_unbound00:29:581
1941916995442,4cyclictest2039338-21kworker/u8:0+events_unbound00:10:141
1941913995350,2cyclictest1953106-21kworker/u8:0+events_unbound19:45:240
1941913995350,2cyclictest1953106-21kworker/u8:0+events_unbound19:45:240
1941916995248,3cyclictest2014662-21kworker/u8:2+events_unbound23:40:251
1941916995247,4cyclictest2014662-21kworker/u8:2+events_unbound23:10:191
1941916995247,4cyclictest1940183-21kworker/u8:3+events_unbound19:14:281
1941913995242,7cyclictest2006653-21kworker/u8:0+flush-179:022:30:200
4577091500,13ptp4l441ktimers/319:09:553
1941916995044,4cyclictest1953127-21latency_hist19:45:011
1941913994945,3cyclictest1953106-21kworker/u8:0+flush-179:020:25:250
1941916994843,4cyclictest1995567-21kworker/u8:0+events_unbound22:00:151
1941913994839,7cyclictest1995567-21kworker/u8:0+events_unbound22:05:260
1941926994639,5cyclictest2021003-21turbostat23:15:003
1941916994642,3cyclictest1945432-21kworker/u8:0+flush-179:019:30:251
1941913994541,3cyclictest1995565-21systemd-run21:55:000
1941926994437,5cyclictest1995540-21turbostat21:55:003
1941922994440,2cyclictest0-21swapper/221:07:592
1941913994339,3cyclictest2006653-21kworker/u8:0+flush-179:022:35:150
194192699420,40cyclictest0-21swapper/321:36:593
194192699410,1cyclictest0-21swapper/320:15:593
1941913994133,6cyclictest1977255-21sendmail21:00:000
194192699400,1cyclictest0-21swapper/322:51:583
1941922993936,2cyclictest0-21swapper/220:29:552
194192299390,36cyclictest0-21swapper/222:18:592
194192699380,1cyclictest0-21swapper/323:27:003
1941922993834,2cyclictest0-21swapper/221:54:542
194192299380,36cyclictest0-21swapper/223:46:002
1941913993830,6cyclictest2045745-21kworker/u8:2+events_unbound00:35:140
194192699370,36cyclictest0-21swapper/322:01:583
1941922993734,2cyclictest0-21swapper/223:19:562
1941922993734,2cyclictest0-21swapper/223:19:552
1941922993734,2cyclictest0-21swapper/219:15:002
1941922993733,2cyclictest0-21swapper/222:27:592
194192299370,35cyclictest0-21swapper/221:28:592
194192299370,35cyclictest0-21swapper/221:25:002
194192299370,35cyclictest0-21swapper/219:59:592
194192299370,1cyclictest0-21swapper/220:51:592
1941926993634,1cyclictest0-21swapper/321:07:593
1941926993634,1cyclictest0-21swapper/320:51:593
194192699360,35cyclictest0-21swapper/322:35:583
194192699360,35cyclictest0-21swapper/319:54:003
194192699360,35cyclictest0-21swapper/319:39:583
194192699360,35cyclictest0-21swapper/300:18:583
194192699360,35cyclictest0-21swapper/300:03:593
194192699360,35cyclictest0-21swapper/300:03:583
194192699360,1cyclictest0-21swapper/323:33:583
194192699360,1cyclictest0-21swapper/320:35:593
194192699360,1cyclictest0-21swapper/320:09:593
1941922993632,2cyclictest0-21swapper/222:06:582
1941926993530,4cyclictest1965877-21turbostat20:29:553
194192699350,34cyclictest0-21swapper/323:06:583
194192699350,1cyclictest0-21swapper/323:46:593
194192699350,1cyclictest0-21swapper/319:42:003
1941922993532,2cyclictest0-21swapper/223:20:582
1941922993532,2cyclictest0-21swapper/221:37:582
194192299350,2cyclictest0-21swapper/220:23:592
1941913993528,5cyclictest1969033-21latency_hist20:35:010
1941926993432,1cyclictest0-21swapper/322:18:593
1941926993432,1cyclictest0-21swapper/319:59:593
1941926993428,5cyclictest1943586-21turbostat19:15:013
1941922993431,2cyclictest0-21swapper/219:20:592
1941922993430,2cyclictest0-21swapper/222:01:592
1941926993331,1cyclictest0-21swapper/321:25:003
1941926993331,1cyclictest0-21swapper/320:23:593
1941922993331,1cyclictest0-21swapper/220:44:592
1941922993330,2cyclictest0-21swapper/223:07:592
1941926993230,1cyclictest0-21swapper/321:42:003
1941926993230,1cyclictest0-21swapper/321:28:593
1941922993229,2cyclictest0-21swapper/220:04:592
1941922993228,2cyclictest0-21swapper/200:25:592
194192299320,1cyclictest0-21swapper/220:59:592
4577091310,7ptp4l441ktimers/322:15:003
4577091310,4ptp4l441ktimers/321:04:563
1941926993129,1cyclictest0-21swapper/323:24:593
1941926993129,1cyclictest0-21swapper/320:59:593
194192699310,27cyclictest0-21swapper/320:40:013
1941922993129,1cyclictest0-21swapper/200:04:592
1941922993129,1cyclictest0-21swapper/200:04:582
1941926993027,2cyclictest0-21swapper/323:35:013
194192699300,28cyclictest0-21swapper/321:15:173
194192699300,28cyclictest0-21swapper/300:05:153
194192699300,27cyclictest0-21swapper/323:55:153
1941922993027,2cyclictest0-21swapper/223:35:132
1941922993027,2cyclictest0-21swapper/222:40:132
1941922993026,2cyclictest0-21swapper/221:12:592
194192299300,28cyclictest0-21swapper/200:05:152
4577091290,6ptp4l61490irq/134-eno1-TxRx-023:55:003
4577091290,6ptp4l441ktimers/321:50:003
4577091290,4ptp4l61490irq/134-eno1-TxRx-023:19:563
4577091290,4ptp4l61490irq/134-eno1-TxRx-023:19:553
1941926992927,1cyclictest0-21swapper/322:28:003
194192699290,27cyclictest0-21swapper/320:10:123
194192699290,27cyclictest0-21swapper/319:45:133
194192699290,27cyclictest0-21swapper/319:45:133
194192699290,26cyclictest0-21swapper/322:40:143
1941922992926,2cyclictest0-21swapper/223:31:002
1941922992926,2cyclictest0-21swapper/221:45:022
1941922992925,2cyclictest0-21swapper/221:01:592
1941922992925,2cyclictest0-21swapper/200:12:592
1941922992924,2cyclictest0-21swapper/223:54:002
194192299290,2cyclictest0-21swapper/220:15:122
194192299290,27cyclictest0-21swapper/223:55:152
194192299290,27cyclictest0-21swapper/221:15:172
194192299290,27cyclictest0-21swapper/219:40:582
4577091280,6ptp4l441ktimers/323:05:003
4577091280,6ptp4l441ktimers/323:00:003
4577091280,6ptp4l441ktimers/322:09:563
4577091280,5ptp4l61490irq/134-eno1-TxRx-000:15:013
4577091280,5ptp4l441ktimers/321:35:003
4577091280,5ptp4l441ktimers/319:35:003
1941926992826,1cyclictest0-21swapper/300:29:003
1941926992825,2cyclictest0-21swapper/322:20:143
194192699280,26cyclictest0-21swapper/320:00:133
1941922992825,2cyclictest0-21swapper/222:54:562
1941922992825,2cyclictest0-21swapper/219:15:132
1941922992825,2cyclictest0-21swapper/219:15:122
1941922992824,2cyclictest0-21swapper/219:33:592
194192299280,2cyclictest0-21swapper/222:20:152
194192299280,26cyclictest0-21swapper/222:12:002
4577091270,6ptp4l61490irq/134-eno1-TxRx-019:20:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-019:20:003
4577091270,5ptp4l61490irq/134-eno1-TxRx-023:44:563
4577091270,5ptp4l61490irq/134-eno1-TxRx-021:15:003
4577091270,5ptp4l441ktimers/320:49:553
4577091270,5ptp4l441ktimers/319:25:003
4577091270,5ptp4l441ktimers/300:34:553
4577091270,4ptp4l61490irq/134-eno1-TxRx-020:35:013
4577091270,4ptp4l441ktimers/322:50:013
4577091270,4ptp4l441ktimers/319:30:003
194192699270,26cyclictest0-21swapper/300:22:593
1941922992725,1cyclictest0-21swapper/222:40:002
1941922992722,3cyclictest0-21swapper/223:25:592
194192299270,2cyclictest0-21swapper/223:14:552
194192299270,25cyclictest0-21swapper/220:45:122
194192299270,24cyclictest0-21swapper/219:35:132
194192299270,24cyclictest0-21swapper/200:20:012
4577091260,5ptp4l61490irq/134-eno1-TxRx-022:35:003
194192699260,24cyclictest0-21swapper/321:55:143
1941922992622,2cyclictest0-21swapper/200:22:592
194192299260,2cyclictest0-21swapper/220:10:592
194192299260,24cyclictest0-21swapper/222:30:152
194192299260,24cyclictest0-21swapper/220:35:592
194192299260,24cyclictest0-21swapper/200:34:582
1941913992611,9cyclictest1941912-21date19:10:020
4577091250,4ptp4l61490irq/134-eno1-TxRx-000:39:553
1941922992522,2cyclictest0-21swapper/222:46:592
1941922992522,2cyclictest0-21swapper/220:30:592
1941922992522,2cyclictest0-21swapper/219:51:592
1941922992421,2cyclictest0-21swapper/221:41:002
1941922992320,2cyclictest0-21swapper/221:56:002
1941922992220,1cyclictest0-21swapper/222:59:592
1941922992219,2cyclictest0-21swapper/221:30:122
194191699221,3cyclictest1927661-1kworker/1:2H+kblockd19:10:031
1941922992118,2cyclictest0-21swapper/220:05:592
1941922992118,2cyclictest0-21swapper/219:25:582
1941922992017,2cyclictest0-21swapper/200:36:592
1941922991512,2cyclictest0-21swapper/219:49:002
1941922991512,2cyclictest0-21swapper/219:48:592
1941922991411,2cyclictest0-21swapper/223:02:592
194192299109,1cyclictest0-21swapper/223:44:592
19419229930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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