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2026-05-20 - 06:29
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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 376 highest latencies:
System rackeslot6.osadl.org (updated Wed May 20, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15618769911396,13cyclictest1579546-21latency_hist20:05:011
15618749910697,7cyclictest1636513-21latency_hist23:00:000
15618769910290,9cyclictest1571574-21/usr/sbin/munin19:40:231
15618749910193,5cyclictest1213033-21systemd-journal21:19:590
1561876999785,9cyclictest1561797-21kworker/u8:2+flush-179:019:25:001
1561876999774,20cyclictest1581626-21/usr/sbin/munin20:10:251
1561876999683,9cyclictest1213033-21systemd-journal00:03:591
1561874999487,5cyclictest1609185-21kworker/u8:2+flush-179:022:00:000
1561874999483,8cyclictest1610802-21latency_hist21:40:010
1561876999384,6cyclictest1634922-21latency_hist22:55:001
1561876999384,6cyclictest1634922-21latency_hist22:55:001
1561874999183,6cyclictest1650567-21kworker/u8:0+flush-179:023:55:140
1561874998980,7cyclictest1561797-21kworker/u8:2+events_unbound19:40:010
1561874998881,5cyclictest1655932-21kworker/u8:3+flush-179:000:15:200
1561874998878,7cyclictest1561750-21latency_hist19:10:020
1561874998780,4cyclictest1650567-21kworker/u8:0+events_unbound23:45:010
1561874998780,4cyclictest1635181-21kworker/u8:1+flush-179:023:00:150
1561874998777,7cyclictest1647679-21kworker/u8:3+events_unbound23:35:020
1561874998472,10cyclictest1614295-21kworker/u8:0+flush-179:022:20:000
1561874998274,5cyclictest1614295-21kworker/u8:0+events_unbound22:25:020
1561874998174,5cyclictest1594929-21kworker/u8:0+flush-179:021:25:000
1561874998172,7cyclictest1652690-21latency_hist23:50:010
1561876998069,8cyclictest3093167-21cups-browsed00:00:011
1561874998065,11cyclictest1213033-21systemd-journal20:11:570
1561876997972,4cyclictest1591462-21apt-get20:40:031
1561876997869,6cyclictest1620607-21latency_hist22:10:001
1561874997870,6cyclictest1577957-21latency_hist20:00:020
1561874997764,10cyclictest1576091-21latency_hist19:55:010
1561874997667,7cyclictest1655932-21kworker/u8:3+flush-179:000:30:220
1561874997565,6cyclictest1594929-21kworker/u8:0+events_unbound21:05:240
1561874997468,4cyclictest1609185-21kworker/u8:2+flush-179:022:00:230
1561874997357,12cyclictest1213033-21systemd-journal19:35:010
1561874997266,5cyclictest1594929-21kworker/u8:0+events_unbound21:10:240
1561874997265,5cyclictest1561797-21kworker/u8:2+flush-179:019:10:200
1561874997265,5cyclictest1561797-21kworker/u8:2+flush-179:019:10:190
1561874997260,9cyclictest1584597-21apt-get20:20:010
1561874997165,4cyclictest1614295-21kworker/u8:0+flush-179:022:30:150
1561874997164,4cyclictest1571372-21kworker/u8:0+events_unbound20:30:010
1561874997063,6cyclictest1631210-21kworker/u8:0+flush-179:022:50:250
1561874997063,6cyclictest1631210-21kworker/u8:0+flush-179:022:50:240
1561874997060,8cyclictest1595149-21apt-get20:50:120
1561874997060,7cyclictest1644459-21kworker/u8:1+flush-179:000:35:170
1561874996958,8cyclictest1639732-21kworker/u8:3+flush-179:023:10:240
1561876996861,4cyclictest1644459-21kworker/u8:1+flush-179:000:20:001
1561874996660,4cyclictest1569711-21kworker/u8:3+flush-179:019:45:210
1561874996659,4cyclictest1609185-21kworker/u8:2+flush-179:021:50:240
1561876996542,21cyclictest1566795-21/usr/sbin/munin19:25:231
1561874996559,4cyclictest1571372-21kworker/u8:0+flush-179:020:20:150
1561874996556,6cyclictest1588048-21kworker/u8:3+flush-179:021:00:200
1561874996548,7cyclictest1619058-21kworker/u8:3+flush-179:022:15:000
1561874996355,5cyclictest1614295-21kworker/u8:0+flush-179:022:05:270
1561874996256,4cyclictest1655932-21kworker/u8:3+flush-179:000:10:170
1561874996256,4cyclictest1655932-21kworker/u8:3+flush-179:000:10:170
1561874996254,6cyclictest1594929-21kworker/u8:0+flush-179:021:00:000
1561874996251,9cyclictest1664147-21apt-get00:25:110
1561876996152,7cyclictest1662543-21/usr/sbin/munin00:20:261
1561876996150,8cyclictest1612899-21/usr/sbin/munin21:45:251
1561874996152,7cyclictest1213033-21systemd-journal19:28:560
1561876996037,20cyclictest1639732-21kworker/u8:3+events_unbound23:15:011
156187699602,56cyclictest1-21systemd21:00:011
1561876995945,10cyclictest1213033-21systemd-journal20:54:591
1561874995953,4cyclictest1588048-21kworker/u8:3+flush-179:020:35:210
1561874995952,5cyclictest1644459-21kworker/u8:1+flush-179:023:50:150
1561876995849,7cyclictest1627211-21kworker/u8:2+flush-179:022:30:231
1561876995846,9cyclictest1614295-21kworker/u8:0+flush-179:022:25:221
1561876995846,9cyclictest1614295-21kworker/u8:0+flush-179:022:25:211
1561874995852,5cyclictest1644459-21kworker/u8:1+flush-179:000:00:040
1561874995848,8cyclictest1607859-21/usr/sbin/munin21:30:230
1561876995753,3cyclictest1631210-21kworker/u8:0+flush-179:022:55:191
1561876995749,6cyclictest1213033-21systemd-journal23:20:041
1561874995751,4cyclictest1594929-21kworker/u8:0+flush-179:021:25:150
1561874995749,7cyclictest1614295-21kworker/u8:0+events_unbound22:25:150
1561874995749,7cyclictest1614295-21kworker/u8:0+events_unbound22:25:150
1561874995647,6cyclictest1566559-21latency_hist19:25:010
1561876995547,6cyclictest1609185-21kworker/u8:2+flush-179:021:55:001
1561876995547,6cyclictest1588048-21kworker/u8:3+flush-179:020:45:161
1561876995536,17cyclictest510-21rs:main1
1561874995546,6cyclictest1631210-21kworker/u8:0+flush-179:023:25:200
1561874995544,8cyclictest1631210-21kworker/u8:0+flush-179:023:15:210
1561876995446,6cyclictest1666024-21diskstats00:30:161
1561876995444,7cyclictest1631210-21kworker/u8:0+flush-179:023:30:001
1561874995450,3cyclictest1655932-21kworker/u8:3+flush-179:000:05:270
1561874995449,4cyclictest1571372-21kworker/u8:0+flush-179:019:44:560
1561874995443,8cyclictest1644517-21kworker/u8:2+flush-179:023:30:140
1561874995442,9cyclictest1639707-21munin-run23:10:010
1561874995348,4cyclictest1581422-21kworker/u8:2+flush-179:020:40:150
1561876995245,5cyclictest1569729-21latency_hist19:35:011
1561874995246,5cyclictest1588048-21kworker/u8:3+events_unbound20:45:180
1561876995143,6cyclictest1594929-21kworker/u8:0+events_unbound21:25:221
1561876995115,20cyclictest0-21swapper/119:15:251
1561874995146,4cyclictest1571372-21kworker/u8:0+events_unbound20:00:240
1561874995145,5cyclictest1628594-21kworker/u8:3+flush-179:022:44:550
1561874995134,6cyclictest1571372-21kworker/u8:0+events_unbound20:30:250
156187499511,49cyclictest1-21systemd21:45:010
4577091500,14ptp4l441ktimers/319:10:013
1561876994940,6cyclictest1571372-21kworker/u8:0+flush-179:020:20:221
1561876994937,9cyclictest1580345-21diskstats20:05:161
156187699490,34cyclictest0-21swapper/121:35:011
156187699490,2cyclictest714-21Xorg19:49:591
1561874994945,3cyclictest1631210-21kworker/u8:0+flush-179:022:45:240
156187699481,29cyclictest1630172-21munin-run22:40:001
1561876994731,15cyclictest714-21Xorg22:50:001
156187699470,5cyclictest714-21Xorg23:02:001
1561874994742,4cyclictest1655932-21kworker/u8:3+events_unbound00:20:160
156187699461,41cyclictest1599926-21apt-get21:05:131
156187699460,2cyclictest714-21Xorg19:57:591
156187699460,28cyclictest0-21swapper/122:00:131
1561874994640,5cyclictest1548626-21kworker/u8:3+events_unbound19:15:190
156188299453,40cyclictest0-21swapper/300:11:593
156188299453,40cyclictest0-21swapper/300:11:593
1561876994537,6cyclictest1557028-21kworker/u8:1+flush-179:019:35:261
1561876994537,5cyclictest1655932-21kworker/u8:3+flush-179:000:25:141
1561876994433,9cyclictest1611332-21apt-get21:40:121
1561876994425,17cyclictest714-21Xorg23:50:591
156187699440,28cyclictest0-21swapper/122:40:131
1561874994437,5cyclictest1213033-21systemd-journal22:36:050
1561874994436,7cyclictest1614260-21idleruntime-cro21:50:010
1561880994340,2cyclictest0-21swapper/222:19:552
1561876994326,15cyclictest0-21swapper/123:05:121
156188099420,2cyclictest0-21swapper/200:11:592
156188099420,2cyclictest0-21swapper/200:11:592
1561876994236,5cyclictest1639732-21kworker/u8:3+flush-179:023:20:001
1561876994227,14cyclictest0-21swapper/121:59:591
1561876994130,9cyclictest1625369-21kworker/u8:1+flush-179:022:25:001
1561876994120,18cyclictest1646611-21diskstats23:30:141
1561876994035,3cyclictest714-21Xorg00:05:591
1561876994035,3cyclictest1598077-21turbostat21:04:551
1561876994034,5cyclictest1619058-21kworker/u8:3+flush-179:022:15:231
156188299390,37cyclictest0-21swapper/320:08:593
156188099390,36cyclictest0-21swapper/221:22:592
1561876993935,2cyclictest0-21swapper/121:37:001
1561876993933,5cyclictest1647679-21kworker/u8:3+events_unbound23:40:191
1561876993931,6cyclictest1647679-21kworker/u8:3+flush-179:023:35:161
1561876993928,8cyclictest1213033-21systemd-journal21:25:001
1561882993835,2cyclictest0-21swapper/321:43:003
156188299380,35cyclictest0-21swapper/300:02:593
156188099380,36cyclictest0-21swapper/220:08:592
156188099380,35cyclictest0-21swapper/223:48:592
156188099380,35cyclictest0-21swapper/221:15:592
156188099380,35cyclictest0-21swapper/220:22:592
1561876993833,3cyclictest1622210-21idleruntime-cro22:15:001
1561876993829,7cyclictest1589599-21latency_hist20:35:001
156187699381,32cyclictest908065-21snmpd00:10:141
156187699381,32cyclictest908065-21snmpd00:10:141
1561882993735,1cyclictest0-21swapper/323:15:593
1561882993734,2cyclictest0-21swapper/322:00:593
156188299371,35cyclictest0-21swapper/320:39:003
156188299370,36cyclictest0-21swapper/319:23:593
1561880993733,2cyclictest0-21swapper/220:47:582
156188099370,35cyclictest0-21swapper/219:23:592
156188099370,2cyclictest0-21swapper/200:02:592
1561876993734,2cyclictest714-21Xorg00:36:591
156187699370,1cyclictest0-21swapper/123:46:591
1561882993630,5cyclictest1602849-21turbostat21:15:013
156188299360,35cyclictest0-21swapper/321:22:593
1561880993633,2cyclictest0-21swapper/219:39:592
1561876993620,15cyclictest0-21swapper/121:10:231
1561874993624,9cyclictest1213033-21systemd-journal23:25:000
156188299358,26cyclictest1628576-21turbostat22:35:003
156188299354,30cyclictest0-21swapper/300:22:593
1561882993533,1cyclictest0-21swapper/320:11:003
1561882993532,2cyclictest0-21swapper/320:47:593
1561880993532,2cyclictest0-21swapper/222:39:592
1561880993531,2cyclictest0-21swapper/221:33:592
1561880993531,2cyclictest0-21swapper/220:59:552
1561876993518,15cyclictest0-21swapper/119:50:251
156187699350,3cyclictest1561757-1kworker/1:1H-kblockd19:10:021
1561882993431,2cyclictest0-21swapper/322:40:003
1561882993428,5cyclictest1586435-21turbostat20:29:563
1561880993431,2cyclictest0-21swapper/221:15:012
1561880993431,2cyclictest0-21swapper/220:04:592
1561880993430,2cyclictest0-21swapper/220:35:592
1561880993430,2cyclictest0-21swapper/220:29:552
156188099340,31cyclictest0-21swapper/219:20:002
156187699341,28cyclictest0-21swapper/120:25:131
1561876993410,22cyclictest484-21dbus-daemon20:20:001
1561882993331,1cyclictest0-21swapper/323:46:593
1561882993331,1cyclictest0-21swapper/319:39:593
156187699331,30cyclictest0-21swapper/119:10:161
156187699331,30cyclictest0-21swapper/119:10:161
1561882993230,1cyclictest0-21swapper/323:44:593
1561882993230,1cyclictest0-21swapper/321:05:143
1561882993230,1cyclictest0-21swapper/320:59:543
1561882993224,6cyclictest1577967-21turbostat20:00:013
156188299320,1cyclictest0-21swapper/323:11:583
1561880993228,2cyclictest0-21swapper/221:37:002
1561880993228,2cyclictest0-21swapper/221:04:542
1561880993228,2cyclictest0-21swapper/219:34:542
1561880993228,2cyclictest0-21swapper/219:27:592
156188099320,2cyclictest0-21swapper/200:22:582
1561882993129,1cyclictest0-21swapper/323:05:133
1561882993129,1cyclictest0-21swapper/321:33:583
1561882993129,1cyclictest0-21swapper/320:04:593
1561882993124,4cyclictest1622208-21turbostat22:15:003
1561880993128,2cyclictest0-21swapper/200:05:592
1561880993127,2cyclictest0-21swapper/221:41:592
1561880993127,2cyclictest0-21swapper/200:36:592
156188099310,29cyclictest0-21swapper/222:45:122
156188099310,29cyclictest0-21swapper/221:05:132
156188099310,28cyclictest0-21swapper/223:06:592
156188099310,27cyclictest0-21swapper/221:45:152
1561874993125,4cyclictest1571372-21kworker/u8:0+flush-179:020:05:200
4577091300,7ptp4l441ktimers/320:55:003
1561882993028,1cyclictest0-21swapper/320:20:123
1561882993026,2cyclictest0-21swapper/319:27:583
156188299300,27cyclictest0-21swapper/321:50:133
1561880993028,1cyclictest0-21swapper/220:55:002
156188099300,28cyclictest0-21swapper/219:45:002
156188099300,27cyclictest0-21swapper/221:50:142
1561876993027,2cyclictest0-21swapper/121:15:151
4577091290,6ptp4l441ktimers/321:50:013
4577091290,6ptp4l441ktimers/300:15:003
1561882992927,1cyclictest0-21swapper/319:34:553
1561882992926,2cyclictest0-21swapper/321:39:593
1561882992926,2cyclictest0-21swapper/300:05:593
156188299292,26cyclictest0-21swapper/323:01:593
156188299290,27cyclictest0-21swapper/320:42:593
156188299290,26cyclictest0-21swapper/321:15:143
156188299290,26cyclictest0-21swapper/300:30:143
1561880992926,2cyclictest0-21swapper/223:35:022
1561880992926,2cyclictest0-21swapper/222:40:142
1561880992926,2cyclictest0-21swapper/200:30:142
1561880992925,2cyclictest0-21swapper/223:51:592
156188099290,2cyclictest0-21swapper/222:30:122
156188099290,2cyclictest0-21swapper/219:55:022
156188099290,27cyclictest0-21swapper/223:01:592
156188099290,27cyclictest0-21swapper/222:50:132
156188099290,27cyclictest0-21swapper/222:50:132
156188099290,27cyclictest0-21swapper/222:25:132
156188099290,27cyclictest0-21swapper/222:25:122
156188099290,27cyclictest0-21swapper/219:10:162
156188099290,27cyclictest0-21swapper/219:10:162
156188099290,21cyclictest0-21swapper/222:00:132
156188099290,21cyclictest0-21swapper/220:43:002
4577091280,7ptp4l61490irq/134-eno1-TxRx-019:49:593
4577091280,7ptp4l441ktimers/323:40:003
4577091280,6ptp4l61490irq/134-eno1-TxRx-023:54:553
4577091280,6ptp4l61490irq/134-eno1-TxRx-022:10:013
4577091280,6ptp4l441ktimers/323:35:003
4577091280,6ptp4l441ktimers/319:45:013
1561882992826,1cyclictest0-21swapper/322:25:123
1561882992826,1cyclictest0-21swapper/322:25:123
1561882992826,1cyclictest0-21swapper/321:04:543
1561882992825,2cyclictest0-21swapper/322:45:123
1561882992825,2cyclictest0-21swapper/321:59:583
156188299280,27cyclictest0-21swapper/322:50:133
156188299280,27cyclictest0-21swapper/322:50:133
156188299280,27cyclictest0-21swapper/319:10:163
156188299280,27cyclictest0-21swapper/319:10:163
156188299280,26cyclictest1665495-21turbostat00:30:003
156188299280,25cyclictest0-21swapper/322:15:143
1561880992825,2cyclictest0-21swapper/222:23:592
1561880992825,2cyclictest0-21swapper/222:15:012
156188099280,26cyclictest0-21swapper/220:34:582
4577091270,6ptp4l61490irq/134-eno1-TxRx-023:25:003
4577091270,6ptp4l441ktimers/319:55:013
1561882992726,1cyclictest0-21swapper/322:40:133
1561882992725,1cyclictest0-21swapper/300:36:593
1561882992724,2cyclictest1636528-21turbostat23:00:003
1561882992724,2cyclictest1607629-21turbostat21:30:013
156188299270,24cyclictest0-21swapper/323:29:563
1561880992723,2cyclictest0-21swapper/219:49:552
4577091260,6ptp4l61490irq/134-eno1-TxRx-023:59:553
1561882992623,2cyclictest0-21swapper/322:24:003
1561882992623,2cyclictest0-21swapper/320:19:593
1561880992624,1cyclictest0-21swapper/220:19:592
1561880992623,2cyclictest0-21swapper/222:08:592
1561880992623,2cyclictest0-21swapper/200:15:592
1561880992622,2cyclictest0-21swapper/219:53:582
156188099260,2cyclictest0-21swapper/223:29:552
156188099260,18cyclictest0-21swapper/220:10:142
4577091250,5ptp4l61490irq/134-eno1-TxRx-020:35:013
1561880992523,1cyclictest0-21swapper/223:35:002
1561880992521,2cyclictest0-21swapper/223:41:592
4577091240,4ptp4l61490irq/134-eno1-TxRx-019:19:553
1561880992422,1cyclictest0-21swapper/223:25:002
1561880992422,1cyclictest0-21swapper/200:29:592
1561880992321,1cyclictest0-21swapper/223:14:592
1561880992320,1cyclictest0-21swapper/223:20:002
1561880992219,2cyclictest0-21swapper/222:56:592
1561880992219,2cyclictest0-21swapper/221:59:582
1561880992016,2cyclictest0-21swapper/223:58:592
1561880991815,2cyclictest0-21swapper/221:25:592
15618809983,4cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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