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2025-12-10 - 19:50
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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 Wed Dec 10, 2025 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17338269910191,7cyclictest1738625-21latency_hist07:25:011
1733813999380,9cyclictest271-21systemd-journal09:10:000
1733826999080,7cyclictest1789040-21latency_hist10:00:011
1733813999086,3cyclictest1810550-21kworker/u8:3+events_unbound11:05:240
1733826998776,8cyclictest1833105-21latency_hist12:15:021
1733813998782,4cyclictest1789059-21kworker/u8:0+events_unbound10:00:230
1733813998277,4cyclictest1789059-21kworker/u8:0+events_unbound10:10:290
1733826998174,5cyclictest1745061-21kworker/u8:2+flush-179:008:40:011
1733813998171,7cyclictest1737023-21latency_hist07:20:020
1733826998069,8cyclictest1755078-21latency_hist08:15:011
1733826998069,8cyclictest1755078-21latency_hist08:15:001
1733813997570,4cyclictest1772887-21kworker/u8:1+events_unbound09:35:230
1733813997565,7cyclictest1795403-21latency_hist10:20:000
1733826997353,18cyclictest1789059-21kworker/u8:0+flush-179:012:00:001
1733813997367,4cyclictest1824871-21kworker/u8:3+events_unbound12:05:150
1733813997365,7cyclictest1824871-21kworker/u8:3+events_unbound12:25:140
1733813997364,6cyclictest1785849-21latency_hist09:50:010
1733826997263,6cyclictest1732025-21kworker/u8:3+flush-179:007:10:181
1733813997166,4cyclictest1737068-21kworker/u8:0+events_unbound07:35:240
1733826997060,7cyclictest1797001-21latency_hist10:25:011
1733813997066,3cyclictest1772887-21kworker/u8:1+events_unbound09:20:200
1733813997062,7cyclictest1761483-21kworker/u8:0+events_unbound08:45:270
1733813996959,8cyclictest1755336-21apt-get08:15:140
1733826996863,3cyclictest723-21Xorg09:28:591
1733813996857,9cyclictest1823506-21apt-get11:45:130
1733813996857,9cyclictest1823506-21apt-get11:45:130
1733826996760,5cyclictest1803906-21apt-get10:45:001
1733813996661,4cyclictest1745061-21kworker/u8:2+events_unbound08:30:140
1733813996655,8cyclictest1784263-21latency_hist09:45:010
1733826996551,12cyclictest1770421-21kworker/u8:0+flush-179:009:05:161
1733826996454,8cyclictest1774696-21apt-get09:15:131
1733826996453,6cyclictest1789059-21kworker/u8:0+flush-179:010:25:021
1733813996456,3cyclictest1789059-21kworker/u8:0+events_unbound11:25:260
1733813996453,8cyclictest1779220-21latency_hist09:30:010
1733813996452,9cyclictest1800560-21gpgv10:35:010
1733813996358,4cyclictest1823742-21kworker/u8:2+events_unbound12:00:290
1733813996358,4cyclictest1789059-21kworker/u8:0+events_unbound11:10:130
1733813996354,4cyclictest1824871-21kworker/u8:3+events_unbound12:35:270
1733826996252,7cyclictest1792216-21latency_hist10:10:011
1733826996251,8cyclictest1774439-21latency_hist09:15:021
1733813996258,3cyclictest1789059-21kworker/u8:0+flush-179:010:49:570
1733813996258,3cyclictest1770421-21kworker/u8:0+events_unbound09:10:230
1733813996244,13cyclictest271-21systemd-journal10:20:120
1733826996150,8cyclictest1828533-21/usr/sbin/munin12:00:251
1733813996157,3cyclictest1823742-21kworker/u8:2+events_unbound12:15:220
1733813996157,3cyclictest1759844-21kworker/u8:3+events_unbound08:40:300
1733813996156,4cyclictest1795458-21kworker/u8:3+flush-179:010:25:260
1733813996152,3cyclictest1789059-21kworker/u8:0+events_unbound11:35:240
1733813996151,8cyclictest1779737-21apt-get09:30:110
1733813996056,3cyclictest1823742-21kworker/u8:2+events_unbound12:30:180
1733832995956,2cyclictest0-21swapper/211:50:002
1733832995956,2cyclictest0-21swapper/211:49:592
1733826995956,1cyclictest0-21swapper/111:50:001
1733826995956,1cyclictest0-21swapper/111:49:591
1733826995952,5cyclictest271-21systemd-journal12:38:191
1733813995955,3cyclictest1740752-21kworker/u8:1+events_unbound07:45:170
1733834995856,1cyclictest0-21swapper/311:50:003
1733834995856,1cyclictest0-21swapper/311:50:003
1733813995855,3cyclictest1792261-21kworker/u8:1+flush-179:010:39:560
1733813995855,3cyclictest1792261-21kworker/u8:1+flush-179:010:39:560
1733813995853,4cyclictest1737068-21kworker/u8:0+events_unbound07:51:020
1733813995849,7cyclictest1741799-21latency_hist07:35:010
1733826995648,5cyclictest1806514-21kworker/u8:2+flush-179:010:50:261
1733813995648,3cyclictest1720028-21kworker/u8:2+events_unbound07:20:200
1733813995647,3cyclictest1787416-21kworker/u8:2+events_unbound09:55:250
1733813995647,3cyclictest1759844-21kworker/u8:3+events_unbound08:59:080
1733826995525,27cyclictest1816290-21kworker/u8:2+flush-179:011:34:591
1733813995551,3cyclictest1821620-21kworker/u8:1+events_unbound11:40:110
1733813995551,3cyclictest1787416-21kworker/u8:2+flush-179:010:09:190
1733813995551,3cyclictest1745061-21kworker/u8:2+flush-179:008:39:550
1733813995551,3cyclictest1745061-21kworker/u8:2+events_unbound07:55:210
1733813995549,5cyclictest271-21systemd-journal11:54:590
1733813995543,9cyclictest1751647-21latency_hist08:05:010
1733826995444,8cyclictest1792476-21apt-get10:10:131
1733826995443,8cyclictest1756945-21apt-get08:20:121
1733826995418,31cyclictest0-21swapper/111:10:121
4670791530,9ptp4l441ktimers/307:06:423
1733826995346,6cyclictest1824871-21kworker/u8:3+events_unbound12:35:011
1733826995341,9cyclictest1720028-21kworker/u8:2+flush-179:007:20:001
1733826995339,11cyclictest1771019-21apt-get09:05:011
1733813995349,3cyclictest1789059-21kworker/u8:0+flush-179:011:19:560
1733813995348,4cyclictest1789059-21kworker/u8:0+events_unbound11:59:380
1733826995248,3cyclictest1740752-21kworker/u8:1+flush-179:007:45:281
1733826995241,8cyclictest1781305-21/usr/sbin/munin09:35:231
1733813995247,4cyclictest1789059-21kworker/u8:0+events_unbound10:52:140
1733813995243,7cyclictest1745035-21apt-get07:45:000
1733826995145,4cyclictest1767847-21kworker/u8:2+flush-179:008:55:011
1733826995144,4cyclictest1804402-21apt-get10:45:141
1733826995142,7cyclictest1772887-21kworker/u8:1+flush-179:009:45:271
1733826995142,6cyclictest1824871-21kworker/u8:3+events_unbound12:25:231
1733813995147,3cyclictest1770421-21kworker/u8:0+events_unbound09:15:250
1733813995147,3cyclictest1755114-21kworker/u8:0+events_unbound08:25:220
1733813995146,4cyclictest1823742-21kworker/u8:2+events_unbound12:11:190
1733813995146,4cyclictest1816290-21kworker/u8:2+events_unbound11:20:230
1733813995146,4cyclictest1792261-21kworker/u8:1+flush-179:010:44:250
1733826995044,5cyclictest1740752-21kworker/u8:1+flush-179:007:40:441
1733813995046,3cyclictest1824871-21kworker/u8:3+events_unbound12:24:200
1733813995046,3cyclictest1789059-21kworker/u8:0+events_unbound11:31:150
1733813995045,4cyclictest1770421-21kworker/u8:0+flush-179:009:00:300
1733826994941,5cyclictest1759844-21kworker/u8:3+flush-179:008:30:001
1733826994940,6cyclictest1772887-21kworker/u8:1+events_unbound09:30:251
1733826994935,12cyclictest1-21systemd11:20:011
1733813994945,3cyclictest1748436-21kworker/u8:3+events_unbound08:05:050
1733813994945,3cyclictest1720028-21kworker/u8:2+events_unbound07:29:480
1733813994944,4cyclictest1745061-21kworker/u8:2+flush-179:008:10:290
1733813994944,4cyclictest1745061-21kworker/u8:2+flush-179:008:10:280
1733826994841,4cyclictest1777636-21latency_hist09:25:011
1733826994840,5cyclictest1823742-21kworker/u8:2+flush-179:012:15:271
1733826994830,14cyclictest1737068-21kworker/u8:0+flush-179:007:50:201
1733813994844,3cyclictest1784257-21kworker/u8:0+events_unbound09:53:140
173383299460,44cyclictest0-21swapper/212:16:592
173383499450,43cyclictest0-21swapper/312:17:003
1733813994541,3cyclictest1789059-21kworker/u8:0+events_unbound10:55:170
1733813994541,3cyclictest1748436-21kworker/u8:3+events_unbound08:20:040
173383499440,42cyclictest0-21swapper/311:33:003
1733813994440,3cyclictest1761483-21kworker/u8:0+events_unbound08:52:120
173383299430,35cyclictest0-21swapper/211:33:002
1733826994322,18cyclictest1800950-21apt-get10:35:121
1733826994322,18cyclictest1800950-21apt-get10:35:121
1733826994321,19cyclictest0-21swapper/107:35:001
1733826994232,7cyclictest1810550-21kworker/u8:3+flush-179:011:05:221
173382699420,38cyclictest271-21systemd-journal08:10:001
173383499410,5cyclictest1772854-21turbostat09:10:003
1733826994133,6cyclictest1748436-21kworker/u8:3+flush-179:007:55:171
1733826994131,7cyclictest1761449-21latency_hist08:35:021
1733826994120,20cyclictest1766096-21unixbench-2d08:45:271
1733826994115,5cyclictest1821654-21perf11:40:011
173382699410,2cyclictest1809185-21http11:00:131
1733813994137,3cyclictest1732025-21kworker/u8:3+events_unbound07:11:450
173383499400,38cyclictest1735441-21turbostat07:15:013
173383499400,32cyclictest1774447-21turbostat09:15:003
173383499400,32cyclictest1753500-21turbostat08:10:013
173383299400,35cyclictest0-21swapper/211:44:562
173382699400,3cyclictest1836317-21idleruntime-cro12:24:591
173383499390,37cyclictest1807327-21turbostat10:55:003
173383499390,36cyclictest0-21swapper/307:39:553
173383299390,36cyclictest0-21swapper/210:49:552
173383299390,36cyclictest0-21swapper/208:49:002
1733826993936,2cyclictest0-21swapper/111:53:591
1733826993932,5cyclictest1745061-21kworker/u8:2+flush-179:008:20:001
1733826993931,5cyclictest1787437-21latency_hist09:55:001
173382699392,7cyclictest0-21swapper/110:57:591
1733826993921,16cyclictest1750316-21apt-get08:00:121
173382699390,37cyclictest0-21swapper/107:28:591
1733834993833,3cyclictest1756674-21turbostat08:19:593
173383499380,37cyclictest0-21swapper/311:44:563
173383499380,37cyclictest0-21swapper/309:54:593
173383499380,37cyclictest0-21swapper/308:43:593
173383499380,1cyclictest0-21swapper/307:28:593
1733832993835,2cyclictest0-21swapper/211:25:582
173383299380,36cyclictest0-21swapper/208:43:582
173383299380,30cyclictest0-21swapper/212:34:582
1733826993834,2cyclictest0-21swapper/111:25:591
173382699381,9cyclictest1782933-21apt-get09:40:141
173382699380,37cyclictest0-21swapper/110:03:591
173382699380,30cyclictest0-21swapper/111:44:591
1733813993834,3cyclictest1789059-21kworker/u8:0+events_unbound11:00:010
1733834993734,2cyclictest0-21swapper/312:33:593
173383299370,35cyclictest0-21swapper/209:54:592
173383299370,2cyclictest0-21swapper/210:55:002
173383299370,2cyclictest0-21swapper/207:28:582
173383299370,1cyclictest0-21swapper/207:39:562
1733826993734,2cyclictest0-21swapper/110:16:591
1733826993714,5cyclictest1769386-21sshd08:59:061
1733834993634,1cyclictest0-21swapper/311:25:593
1733834993633,2cyclictest0-21swapper/308:01:593
173383499360,35cyclictest0-21swapper/310:49:553
173383499360,35cyclictest0-21swapper/309:20:003
173383499360,35cyclictest0-21swapper/308:48:593
1733832993633,2cyclictest0-21swapper/208:01:592
1733832993632,2cyclictest0-21swapper/207:33:592
173383299360,30cyclictest0-21swapper/207:45:032
1733826993630,3cyclictest1743416-21idleruntime-cro07:40:001
1733826993626,6cyclictest0-21swapper/112:05:581
1733834993533,1cyclictest0-21swapper/309:01:003
1733834993532,2cyclictest0-21swapper/307:34:003
1733834993531,2cyclictest0-21swapper/311:36:003
1733832993532,2cyclictest0-21swapper/209:00:592
1733832993532,2cyclictest0-21swapper/208:19:592
1733832993531,2cyclictest0-21swapper/209:24:552
173383299350,2cyclictest0-21swapper/212:02:002
1733826993516,17cyclictest1764307-21switchtime08:40:261
1733834993431,2cyclictest0-21swapper/309:24:553
1733832993431,2cyclictest0-21swapper/208:12:592
1733832993431,2cyclictest0-21swapper/208:12:592
173383299340,2cyclictest0-21swapper/207:20:162
173382699344,8cyclictest723-21Xorg10:33:591
1733834993331,1cyclictest0-21swapper/308:12:593
1733834993331,1cyclictest0-21swapper/308:12:583
1733832993330,2cyclictest0-21swapper/211:36:002
1733832993327,5cyclictest0-21swapper/210:35:142
1733832993327,5cyclictest0-21swapper/210:35:132
1733834993229,2cyclictest0-21swapper/309:29:553
1733834993228,3cyclictest0-21swapper/310:59:553
1733834993226,5cyclictest0-21swapper/307:45:043
173383499320,3cyclictest1748466-21turbostat07:55:003
173383499320,27cyclictest0-21swapper/310:35:143
173383499320,27cyclictest0-21swapper/310:35:143
173383499320,1cyclictest0-21swapper/307:20:153
1733832993228,2cyclictest0-21swapper/209:29:552
1733832993227,2cyclictest0-21swapper/210:59:552
173383299320,30cyclictest0-21swapper/212:21:592
173383299320,29cyclictest0-21swapper/211:10:122
1733834993128,2cyclictest1790641-21turbostat10:05:003
1733834993128,2cyclictest0-21swapper/310:09:593
1733834993127,2cyclictest0-21swapper/311:21:583
1733834993126,3cyclictest0-21swapper/309:48:593
173383499310,2cyclictest0-21swapper/310:20:133
1733832993128,2cyclictest0-21swapper/210:09:592
1733832993127,2cyclictest0-21swapper/211:21:592
173383299310,2cyclictest0-21swapper/208:05:022
1733834993026,3cyclictest0-21swapper/308:57:583
1733834993025,2cyclictest0-21swapper/312:00:023
173383499300,29cyclictest0-21swapper/310:30:143
173383499300,28cyclictest0-21swapper/309:35:143
173383499300,28cyclictest0-21swapper/308:30:133
173383499300,28cyclictest0-21swapper/308:20:143
1733832993027,2cyclictest0-21swapper/211:19:552
1733832993026,2cyclictest0-21swapper/209:48:592
1733832993026,2cyclictest0-21swapper/208:57:582
1733832993025,2cyclictest0-21swapper/210:30:142
173383299300,2cyclictest0-21swapper/210:20:132
173383299300,29cyclictest0-21swapper/208:30:142
173383299300,21cyclictest0-21swapper/211:00:132
173383299300,1cyclictest0-21swapper/210:03:592
1733826993026,2cyclictest0-21swapper/111:21:591
4670791290,7ptp4l441ktimers/312:25:013
1733834992927,1cyclictest0-21swapper/311:19:553
1733834992922,6cyclictest0-21swapper/307:40:143
173383499290,28cyclictest0-21swapper/311:05:133
173383499290,27cyclictest0-21swapper/311:00:123
173383499290,27cyclictest0-21swapper/310:15:163
173383499290,26cyclictest0-21swapper/311:10:123
1733832992925,2cyclictest0-21swapper/209:08:002
1733832992925,2cyclictest0-21swapper/207:40:152
173383299290,27cyclictest0-21swapper/212:36:582
173383299290,27cyclictest0-21swapper/211:05:132
173383299290,27cyclictest0-21swapper/210:25:132
173383299290,27cyclictest0-21swapper/209:35:132
173383299290,27cyclictest0-21swapper/208:20:132
4670791280,6ptp4l441ktimers/309:59:553
173383499280,2cyclictest0-21swapper/307:20:003
173383499280,27cyclictest0-21swapper/312:36:593
173383499280,21cyclictest0-21swapper/310:25:133
1733832992825,2cyclictest0-21swapper/210:15:162
173383299280,26cyclictest0-21swapper/211:51:592
173383299280,26cyclictest0-21swapper/207:10:212
173383299280,25cyclictest0-21swapper/209:10:582
173383299280,19cyclictest0-21swapper/209:44:002
4670791270,6ptp4l61690irq/136-eno1-TxRx-012:15:003
4670791270,6ptp4l441ktimers/312:30:003
4670791270,6ptp4l441ktimers/312:10:013
4670791270,6ptp4l441ktimers/311:54:553
4670791270,6ptp4l441ktimers/308:55:003
4670791270,6ptp4l441ktimers/308:40:003
173383499270,26cyclictest0-21swapper/308:28:583
173383299270,25cyclictest0-21swapper/207:16:192
173383299270,1cyclictest0-21swapper/212:09:592
4670791260,6ptp4l61690irq/136-eno1-TxRx-010:45:003
4670791260,6ptp4l61690irq/136-eno1-TxRx-009:45:013
1733832992623,2cyclictest0-21swapper/212:29:002
173383299260,24cyclictest0-21swapper/208:28:592
173383299260,1cyclictest0-21swapper/211:59:582
4670791250,5ptp4l61690irq/136-eno1-TxRx-012:00:013
4670791250,5ptp4l61690irq/136-eno1-TxRx-007:59:553
4670791250,5ptp4l441ktimers/309:35:003
4670791250,4ptp4l441ktimers/310:14:563
1733832992320,2cyclictest0-21swapper/212:15:002
1733813992219,2cyclictest151ktimers/007:10:030
1733832992119,1cyclictest0-21swapper/209:20:002
1733826992116,4cyclictest0-21swapper/107:10:031
1733832991815,2cyclictest0-21swapper/210:44:592
1733832991814,2cyclictest0-21swapper/210:13:592
1733832991814,2cyclictest0-21swapper/207:56:002
1733832991714,2cyclictest0-21swapper/208:38:592
1733832991712,3cyclictest1767826-21turbostat08:55:002
1733832991613,2cyclictest0-21swapper/209:34:552
1733832991310,2cyclictest0-21swapper/209:56:592
173383299129,2cyclictest0-21swapper/207:54:542
17338329930,2cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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