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2026-05-23 - 09:20
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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 Sat May 23, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
145284599120112,6cyclictest1473967-21kworker/u8:2+events_unbound20:40:011
145284599119112,6cyclictest1508496-21kworker/u8:3+events_unbound22:00:001
145284299119109,7cyclictest1469172-21latency_hist20:00:020
145284599118109,6cyclictest1491438-21kworker/u8:2+events_unbound21:40:011
145284599117103,10cyclictest1213033-21systemd-journal23:25:011
145284299113104,6cyclictest1558965-21latency_hist00:35:000
145284299111103,6cyclictest1508496-21kworker/u8:3+flush-179:021:59:380
145284599110100,7cyclictest1472327-21kworker/u8:0+flush-179:020:25:001
14528429911081,15cyclictest1542989-21latency_hist23:45:010
14528429910595,7cyclictest1551005-21latency_hist00:10:020
14528459910496,6cyclictest1531615-21kworker/u8:2+events_unbound23:40:241
14528459910295,5cyclictest1515546-21kworker/u8:3+events_unbound23:00:011
14528459910295,5cyclictest1515546-21kworker/u8:3+events_unbound23:00:001
14528459910195,4cyclictest1480341-21kworker/u8:3+events_unbound21:15:261
14528459910193,6cyclictest1451393-21kworker/u8:1+events_unbound19:15:021
14528459910192,6cyclictest1478717-21latency_hist20:30:021
14528459910191,7cyclictest1462512-21kworker/u8:0+flush-179:019:40:011
1452845999789,6cyclictest1485123-21kworker/u8:0+flush-179:020:55:011
1452845999488,4cyclictest1472328-21kworker/u8:3+flush-179:020:15:201
1452845999487,4cyclictest1546153-21kworker/u8:1+flush-179:023:55:201
1452845999486,6cyclictest1491438-21kworker/u8:2+events_unbound21:25:221
1452842999487,5cyclictest1501026-21apt-get21:40:000
1452845999282,7cyclictest1454337-21http19:15:011
1452845999278,11cyclictest1213033-21systemd-journal23:50:011
1452842999279,8cyclictest1479383-21kworker/u8:1+events_unbound20:45:000
1452845999185,4cyclictest1446643-21kworker/u8:3+flush-179:019:25:221
1452845999184,5cyclictest1549357-21kworker/u8:3+events_unbound00:15:001
1452845999084,4cyclictest1472328-21kworker/u8:3+events_unbound20:10:251
1452842999076,9cyclictest1213033-21systemd-journal19:40:010
1452842998963,20cyclictest510-21rs:main0
1452845998883,3cyclictest1515521-21kworker/u8:1+events_unbound22:25:221
1452845998882,4cyclictest1452746-21kworker/u8:2+events_unbound20:00:171
1452845998881,5cyclictest1491438-21kworker/u8:2+events_unbound22:20:141
1452845998881,5cyclictest1472328-21kworker/u8:3+flush-179:020:10:021
1452845998879,6cyclictest1452746-21kworker/u8:2+events_unbound19:40:191
1452842998881,5cyclictest1546153-21kworker/u8:1+flush-179:000:00:000
1452845998783,3cyclictest1515546-21kworker/u8:3+flush-179:023:25:231
1452845998781,4cyclictest1491438-21kworker/u8:2+events_unbound22:10:011
1452845998779,6cyclictest1548029-21kworker/u8:0+flush-179:000:05:261
1452845998682,3cyclictest1515546-21kworker/u8:3+flush-179:022:40:221
1452845998679,5cyclictest1480341-21kworker/u8:3+events_unbound20:55:221
1452845998477,4cyclictest1446643-21kworker/u8:3+flush-179:019:30:211
1452845998476,5cyclictest1496231-21kworker/u8:0+events_unbound22:05:151
1452845998475,6cyclictest1491438-21kworker/u8:2+events_unbound21:50:211
1452845998369,11cyclictest1466520-21diskstats19:50:151
1452845998176,3cyclictest1546205-21kworker/u8:2+flush-179:000:00:261
1452845998173,6cyclictest1539792-21latency_hist23:35:001
1452845998169,8cyclictest1491438-21kworker/u8:2+flush-179:022:00:191
1452845998167,6cyclictest1540052-21kworker/u8:4+events_unbound23:50:201
1452845998075,4cyclictest1496231-21kworker/u8:0+events_unbound21:30:251
1452845998072,6cyclictest1496231-21kworker/u8:0+events_unbound21:45:211
1452845997972,5cyclictest1531615-21kworker/u8:2+events_unbound23:15:191
1452845997967,9cyclictest1456434-21apt-get19:20:111
1452845997870,5cyclictest1548029-21kworker/u8:0+events_unbound00:20:121
1452845997869,7cyclictest1549357-21kworker/u8:3+flush-179:000:15:211
1452845997771,4cyclictest1452746-21kworker/u8:2+flush-179:019:45:251
1452845997767,7cyclictest1480306-21latency_hist20:35:011
1452845997767,7cyclictest1480306-21latency_hist20:35:011
1452845997766,8cyclictest1530529-21diskstats23:05:151
1452845997671,4cyclictest1555771-21kworker/u8:1+events_unbound00:30:241
1452845997665,8cyclictest1496231-21kworker/u8:0+flush-179:022:20:001
1452842997669,5cyclictest1515521-21kworker/u8:1+flush-179:022:31:540
1452845997569,5cyclictest1523603-21kworker/u8:0+flush-179:022:50:201
1452842997565,8cyclictest1213033-21systemd-journal22:37:380
1452842997565,7cyclictest1475531-21latency_hist20:20:010
1452845997468,4cyclictest1452746-21kworker/u8:2+events_unbound19:55:171
1452845997464,7cyclictest1480341-21kworker/u8:3+events_unbound21:05:201
1452845997369,3cyclictest1515546-21kworker/u8:3+events_unbound22:45:241
1452845997364,3cyclictest1479383-21kworker/u8:1+events_unbound20:45:131
1452845997266,4cyclictest1523603-21kworker/u8:0+events_unbound23:00:171
1452845997165,4cyclictest1502335-21kworker/u8:1+events_unbound21:40:191
1452845997165,4cyclictest1479383-21kworker/u8:1+flush-179:020:40:161
1452842997065,3cyclictest1462512-21kworker/u8:0+flush-179:019:45:130
1452842997059,8cyclictest1523603-21kworker/u8:0+events_unbound22:50:000
1452845996964,4cyclictest1491438-21kworker/u8:2+events_unbound21:20:211
145284299690,66cyclictest1-21systemd19:33:060
1452842996860,5cyclictest1547822-21cups-browsed00:00:270
1452842996758,7cyclictest1515546-21kworker/u8:3+events_unbound22:55:010
145284799650,63cyclictest0-21swapper/221:37:592
1452845996561,3cyclictest1515546-21kworker/u8:3+events_unbound22:37:401
1452842996457,5cyclictest1503677-21diskstats21:45:170
1452842996455,7cyclictest1480341-21kworker/u8:3+events_unbound20:55:230
145284799630,1cyclictest0-21swapper/222:24:592
1452845996358,3cyclictest1531615-21kworker/u8:2+events_unbound23:35:221
1452842996357,4cyclictest1531829-21apt-get23:10:110
1452842996346,13cyclictest1534750-21apt-get23:20:010
1452845996156,4cyclictest1555814-21kworker/u8:3+events_unbound00:35:231
1452845996155,4cyclictest1480341-21kworker/u8:3+flush-179:021:10:201
1452842996156,4cyclictest1479383-21kworker/u8:1+flush-179:020:35:010
1452842996156,4cyclictest1479383-21kworker/u8:1+flush-179:020:35:000
1452842996151,7cyclictest1462512-21kworker/u8:0+events_unbound19:40:240
1452842996149,9cyclictest1556332-21diskstats00:25:150
1452845996055,4cyclictest1515521-21kworker/u8:1+flush-179:022:30:261
1452842995953,4cyclictest1515546-21kworker/u8:3+events_unbound23:20:240
1452842995848,7cyclictest1554196-21latency_hist00:20:000
1452845995651,4cyclictest1555771-21kworker/u8:1+flush-179:000:29:551
1452842995653,2cyclictest0-21swapper/022:22:590
1452842995444,8cyclictest1480341-21kworker/u8:3+flush-179:021:10:220
1452845995348,4cyclictest1480341-21kworker/u8:3+flush-179:021:00:121
1452842995143,6cyclictest1491438-21kworker/u8:2+flush-179:021:45:000
1452842995143,5cyclictest1548029-21kworker/u8:0+flush-179:000:25:000
1452842995141,7cyclictest1552592-21latency_hist00:15:020
1452842995141,7cyclictest1538204-21latency_hist23:30:010
145284299511,47cyclictest1454758-21apt-key19:15:020
1452845995046,3cyclictest1528656-21kworker/u8:1+flush-179:023:10:241
1452842995045,3cyclictest1485123-21kworker/u8:0+flush-179:020:50:150
1452842995039,9cyclictest1496231-21kworker/u8:0+events_unbound22:15:240
145284299502,31cyclictest1454703-21cat19:15:010
1452842994942,5cyclictest1531571-21latency_hist23:10:010
1452842994931,16cyclictest1467564-21latency_hist19:55:000
145284299490,32cyclictest1512512-21sort22:10:010
1452842994841,5cyclictest1531615-21kworker/u8:2+flush-179:023:35:200
1452842994837,7cyclictest1446643-21kworker/u8:3+events_unbound19:10:020
1452842994837,7cyclictest1446643-21kworker/u8:3+events_unbound19:10:020
4577091470,12ptp4l61490irq/134-eno1-TxRx-019:09:563
4577091470,12ptp4l61490irq/134-eno1-TxRx-019:09:563
1452842994738,7cyclictest1515546-21kworker/u8:3+flush-179:023:30:230
1452842994640,5cyclictest1491438-21kworker/u8:2+flush-179:021:20:200
1452842994640,5cyclictest1452746-21kworker/u8:2+flush-179:020:00:210
1452842994638,6cyclictest510-21rs:main0
1452842994540,3cyclictest1518773-21cron22:30:000
1452842994540,3cyclictest1457794-21systemd-run19:25:000
1452842994538,5cyclictest1523603-21kworker/u8:0+flush-179:023:00:230
1452842994524,19cyclictest1478214-21phc2sys20:25:220
1452842994435,8cyclictest0-21swapper/022:14:550
1452849994341,1cyclictest0-21swapper/300:33:593
1452842994334,7cyclictest1540052-21kworker/u8:4+flush-179:023:45:200
1452842994334,6cyclictest1480341-21kworker/u8:3+flush-179:021:25:190
1452842994321,20cyclictest1499451-21systemd-run21:35:000
1452849994234,6cyclictest1560603-21turbostat00:40:003
145284999420,41cyclictest0-21swapper/322:18:593
1452847994239,2cyclictest0-21swapper/219:57:582
1452842994235,5cyclictest1494647-21latency_hist21:20:010
1452842994136,3cyclictest1477169-21systemd-run20:25:000
145284999400,39cyclictest0-21swapper/323:29:003
145284999400,38cyclictest1547762-21turbostat23:59:593
145284799400,1cyclictest0-21swapper/200:15:002
1452842994037,2cyclictest0-21swapper/021:04:540
145284299401,2cyclictest714-21Xorg20:11:590
145284299400,38cyclictest714-21Xorg21:08:590
1452842993936,2cyclictest714-21Xorg19:28:580
1452842993933,4cyclictest1528387-21latency_hist23:00:020
1452842993933,4cyclictest1528387-21latency_hist23:00:020
1452842993932,6cyclictest1505771-21kworker/u8:1+flush-179:021:50:230
145284799380,36cyclictest0-21swapper/220:31:002
145284799380,36cyclictest0-21swapper/220:30:592
1452842993835,2cyclictest714-21Xorg23:52:590
1452842993835,2cyclictest0-21swapper/022:44:000
1452849993735,1cyclictest0-21swapper/321:06:003
145284999370,36cyclictest0-21swapper/322:24:593
145284999370,35cyclictest0-21swapper/323:31:003
145284999370,2cyclictest0-21swapper/320:39:583
1452847993734,2cyclictest0-21swapper/222:05:592
145284799370,35cyclictest0-21swapper/220:49:592
145284799370,35cyclictest0-21swapper/220:01:002
145284799370,35cyclictest0-21swapper/219:16:592
145284799370,35cyclictest0-21swapper/200:23:582
1452842993733,3cyclictest1555814-21kworker/u8:3+flush-179:000:35:200
4577091360,28ptp4l441ktimers/319:30:123
1452849993634,1cyclictest0-21swapper/323:42:593
1452849993634,1cyclictest0-21swapper/323:09:553
1452849993634,1cyclictest0-21swapper/322:59:553
1452849993634,1cyclictest0-21swapper/322:59:553
1452849993634,1cyclictest0-21swapper/322:29:003
1452849993634,1cyclictest0-21swapper/319:40:593
1452849993633,2cyclictest0-21swapper/321:54:593
145284999360,35cyclictest0-21swapper/323:21:583
145284999360,35cyclictest0-21swapper/320:20:593
145284999360,35cyclictest0-21swapper/319:54:583
145284999360,35cyclictest0-21swapper/300:20:593
145284999360,1cyclictest0-21swapper/320:48:003
145284999360,1cyclictest0-21swapper/320:11:593
145284999360,1cyclictest0-21swapper/320:01:593
1452847993633,2cyclictest0-21swapper/220:05:592
1452847993633,2cyclictest0-21swapper/200:06:582
1452847993632,2cyclictest0-21swapper/219:11:592
1452849993533,1cyclictest0-21swapper/322:13:593
1452849993533,1cyclictest0-21swapper/321:21:003
1452849993533,1cyclictest0-21swapper/321:19:593
1452849993532,2cyclictest0-21swapper/320:50:593
1452849993532,2cyclictest0-21swapper/319:25:583
145284999350,1cyclictest0-21swapper/322:03:593
1452847993532,2cyclictest0-21swapper/223:27:592
145284299353,10cyclictest2304-21lightdm-gtk-gre20:05:590
1452849993431,2cyclictest0-21swapper/320:16:003
1452849993429,4cyclictest1544590-21turbostat23:50:013
1452847993431,2cyclictest0-21swapper/223:46:592
1452849993331,1cyclictest0-21swapper/323:14:003
1452849993331,1cyclictest0-21swapper/321:30:593
1452849993331,1cyclictest0-21swapper/321:03:593
1452849993331,1cyclictest0-21swapper/320:42:583
1452849993331,1cyclictest0-21swapper/319:11:583
1452847993330,2cyclictest0-21swapper/221:27:592
1452847993330,2cyclictest0-21swapper/219:22:582
1452842993328,3cyclictest1485104-21perf20:50:010
1452849993230,1cyclictest0-21swapper/322:34:593
1452849993230,1cyclictest0-21swapper/300:05:593
1452849993229,2cyclictest0-21swapper/323:37:593
1452847993229,2cyclictest0-21swapper/222:48:592
1452847993229,2cyclictest0-21swapper/219:50:592
1452849993129,1cyclictest0-21swapper/320:29:553
1452849993129,1cyclictest0-21swapper/300:18:583
1452847993129,1cyclictest0-21swapper/200:34:592
1452847993128,2cyclictest0-21swapper/223:53:592
1452847993128,2cyclictest0-21swapper/223:39:552
1452847993128,2cyclictest0-21swapper/220:59:592
1452849993028,1cyclictest0-21swapper/323:51:593
1452849993028,1cyclictest0-21swapper/322:45:593
1452849993028,1cyclictest0-21swapper/319:57:593
1452849993027,2cyclictest0-21swapper/322:50:123
1452847993027,2cyclictest0-21swapper/219:34:002
145284799300,28cyclictest0-21swapper/219:25:122
4577091290,7ptp4l441ktimers/319:25:013
4577091290,6ptp4l441ktimers/322:45:003
4577091290,6ptp4l441ktimers/321:50:003
1452849992927,1cyclictest0-21swapper/321:40:023
1452849992927,1cyclictest0-21swapper/321:13:593
1452849992926,2cyclictest0-21swapper/300:00:123
145284999290,28cyclictest0-21swapper/322:35:133
145284999290,28cyclictest0-21swapper/300:10:133
1452847992926,2cyclictest0-21swapper/200:15:132
145284799290,27cyclictest0-21swapper/222:10:012
145284799290,27cyclictest0-21swapper/221:55:132
145284799290,27cyclictest0-21swapper/221:45:152
4577091280,6ptp4l441ktimers/321:30:003
4577091280,5ptp4l441ktimers/320:35:013
4577091280,5ptp4l441ktimers/320:35:003
1452849992826,1cyclictest0-21swapper/321:55:593
1452849992826,1cyclictest0-21swapper/321:38:593
1452849992826,1cyclictest0-21swapper/319:39:593
1452849992826,1cyclictest0-21swapper/300:25:133
145284999280,27cyclictest0-21swapper/319:15:043
145284999280,26cyclictest0-21swapper/322:05:133
145284999280,26cyclictest0-21swapper/320:55:113
145284999280,26cyclictest0-21swapper/319:45:113
1452847992825,2cyclictest0-21swapper/223:30:122
1452847992825,2cyclictest0-21swapper/223:20:032
1452847992825,2cyclictest0-21swapper/222:35:122
1452847992825,2cyclictest0-21swapper/222:26:592
1452847992825,2cyclictest0-21swapper/221:50:122
1452847992825,2cyclictest0-21swapper/220:53:002
1452847992825,2cyclictest0-21swapper/200:29:002
145284799280,2cyclictest0-21swapper/222:55:122
145284799280,2cyclictest0-21swapper/222:55:112
145284799280,2cyclictest0-21swapper/221:40:012
145284799280,27cyclictest0-21swapper/223:40:122
145284799280,26cyclictest0-21swapper/223:00:592
145284799280,26cyclictest0-21swapper/221:10:122
145284799280,26cyclictest0-21swapper/220:25:132
4577091270,6ptp4l61490irq/134-eno1-TxRx-023:04:563
4577091270,5ptp4l441ktimers/320:10:003
145284999270,26cyclictest0-21swapper/323:15:123
1452847992725,1cyclictest0-21swapper/200:00:012
145284799270,25cyclictest0-21swapper/221:05:592
1452847992623,2cyclictest0-21swapper/200:35:112
145284799260,2cyclictest0-21swapper/222:44:592
145284799260,24cyclictest0-21swapper/223:14:552
145284799260,24cyclictest0-21swapper/221:25:002
145284799260,24cyclictest0-21swapper/220:35:592
145284799260,24cyclictest0-21swapper/220:14:592
145284799250,2cyclictest0-21swapper/221:15:592
1452847992321,1cyclictest0-21swapper/222:19:592
1452847992320,2cyclictest0-21swapper/222:50:122
1452847992320,2cyclictest0-21swapper/220:23:002
1452847992220,1cyclictest0-21swapper/219:43:592
1452847992119,1cyclictest0-21swapper/223:07:592
1452847992018,1cyclictest0-21swapper/220:20:002
1452847992017,2cyclictest0-21swapper/200:00:132
1452847991917,1cyclictest0-21swapper/222:00:132
1452847991916,2cyclictest0-21swapper/219:47:002
1452845991912,5cyclictest1452922-21grep19:10:011
1452845991912,5cyclictest1452922-21grep19:10:011
1452847991816,1cyclictest0-21swapper/221:00:592
1452847991816,1cyclictest0-21swapper/220:44:592
1452847991512,2cyclictest0-21swapper/221:30:592
1452847991310,2cyclictest0-21swapper/222:34:552
145284799129,2cyclictest0-21swapper/223:18:592
145284799118,2cyclictest0-21swapper/219:35:592
14528479930,2cyclictest0-21swapper/219:10:022
14528479930,2cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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