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2026-05-15 - 21:01
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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 May 15, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17378939910896,9cyclictest1213033-21systemd-journal11:40:001
1737891999383,8cyclictest1765390-21apt-get08:32:530
1737891999180,9cyclictest1839506-21kworker/u8:2+flush-179:012:35:000
1737893999078,9cyclictest1757170-21latency_hist08:10:011
1737891998781,5cyclictest1776579-21kworker/u8:2+flush-179:009:40:240
1737895998556,27cyclictest0-21swapper/207:17:592
1737891998170,8cyclictest1799649-21/usr/sbin/munin10:20:230
1737891997970,7cyclictest1801034-21kworker/u8:2+flush-179:010:55:010
1737891997870,6cyclictest1768872-21kworker/u8:0+flush-179:008:55:190
1737893997769,6cyclictest1789823-21/usr/sbin/munin09:50:231
1737893997768,7cyclictest1820104-21latency_hist11:25:011
1737891997569,4cyclictest1742541-21kworker/u8:3+flush-179:007:50:150
1737891997568,5cyclictest1787987-21kworker/u8:3+flush-179:009:50:200
1737893997366,5cyclictest1742541-21kworker/u8:3+flush-179:008:15:241
1737891997368,4cyclictest1804159-21kworker/u8:0+events_unbound10:45:010
1737891997366,5cyclictest1768891-21apt-get08:45:120
1737891997363,8cyclictest1760594-21kworker/u8:2+flush-179:008:55:010
1737893997263,6cyclictest1734721-21kworker/u8:2+flush-179:007:35:161
1737893997056,13cyclictest1760594-21kworker/u8:2+flush-179:008:49:551
1737893996962,4cyclictest1742541-21kworker/u8:3+flush-179:008:00:201
1737891996960,7cyclictest1807413-21kworker/u8:3+flush-179:011:05:150
1737891996862,4cyclictest1742541-21kworker/u8:3+flush-179:008:15:170
1737893996757,7cyclictest1760594-21kworker/u8:2+flush-179:008:25:221
1737893996657,7cyclictest1213033-21systemd-journal07:40:531
1737891996659,4cyclictest1784527-21kworker/u8:1+events_unbound09:35:140
1737891996658,5cyclictest1734721-21kworker/u8:2+flush-179:007:30:230
1737893996543,19cyclictest510-21rs:main1
1737891996557,6cyclictest1782957-21latency_hist09:30:020
1737893996455,7cyclictest1783196-21/usr/sbin/munin09:30:231
1737891996357,5cyclictest1823265-21kworker/u8:1+flush-179:011:40:210
1737891996355,5cyclictest1742541-21kworker/u8:3+flush-179:008:05:160
1737891996354,6cyclictest1776589-21latency_hist09:10:010
1737893996155,4cyclictest1787987-21kworker/u8:3+flush-179:010:15:151
1737893996153,6cyclictest1213033-21systemd-journal07:58:521
1737893996152,6cyclictest1813737-21latency_hist11:05:011
1737891996155,4cyclictest1793298-21apt-get10:00:120
173789899600,58cyclictest0-21swapper/307:17:593
1737893996055,4cyclictest1776579-21kworker/u8:2+flush-179:009:15:261
1737893996050,7cyclictest1833082-21kworker/u8:3+events_unbound12:30:131
1737891996055,4cyclictest1823265-21kworker/u8:1+flush-179:011:54:550
1737893995952,5cyclictest1788001-21latency_hist09:45:011
1737893995948,8cyclictest1807413-21kworker/u8:3+flush-179:010:55:191
1737891995951,4cyclictest1815356-21kworker/u8:1+flush-179:011:15:170
1737891995947,5cyclictest1791217-21kworker/u8:2+events_unbound10:10:240
1737893995852,4cyclictest1737791-21kworker/u8:1+events_unbound07:10:231
1737891995852,4cyclictest1734721-21kworker/u8:2+flush-179:007:35:530
1737891995851,5cyclictest1812184-21kworker/u8:0+flush-179:011:30:170
1737891995851,5cyclictest1213033-21systemd-journal07:45:000
1737891995850,6cyclictest1805768-21latency_hist10:40:020
1737891995848,8cyclictest1812404-21apt-get11:00:100
1737891995753,3cyclictest1833082-21kworker/u8:3+flush-179:012:15:280
1737891995750,5cyclictest1753049-21kworker/u8:1+flush-179:008:20:210
1737891995747,8cyclictest1792815-21http10:00:020
1737893995548,5cyclictest1791159-21kworker/u8:1+events_unbound09:55:241
1737893995546,7cyclictest1765435-21kworker/u8:1+events_unbound08:45:001
1737891995549,4cyclictest1829898-21kworker/u8:0+flush-179:012:05:160
1737891995549,4cyclictest1801034-21kworker/u8:2+flush-179:011:10:210
1737891995544,6cyclictest1787987-21kworker/u8:3+events_unbound10:25:130
1737891995448,5cyclictest1737791-21kworker/u8:1+flush-179:007:20:250
1737891995446,6cyclictest1807355-21kworker/u8:1+flush-179:010:45:210
1737893995349,3cyclictest1833082-21kworker/u8:3+flush-179:012:10:251
1737893995346,5cyclictest1742541-21kworker/u8:3+flush-179:007:50:011
1737891995345,6cyclictest1780040-21apt-get09:20:130
1737893995245,5cyclictest1801034-21kworker/u8:2+events_unbound11:30:001
1737893995245,5cyclictest1794631-21latency_hist10:05:001
1737893995245,5cyclictest1794605-21kworker/u8:0+flush-179:010:05:201
1737893995243,7cyclictest1213033-21systemd-journal09:40:001
1737893995236,14cyclictest1776579-21kworker/u8:2+flush-179:009:10:241
1737891995247,4cyclictest1794605-21kworker/u8:0+flush-179:010:19:560
1737893995144,5cyclictest1213033-21systemd-journal07:20:001
1737891995145,5cyclictest1734721-21kworker/u8:2+flush-179:007:15:250
1737891995144,5cyclictest1742541-21kworker/u8:3+events_unbound08:00:210
1737891995144,4cyclictest1742541-21kworker/u8:3+flush-179:007:55:200
4577091500,13ptp4l61490irq/134-eno1-TxRx-007:10:013
1737893995046,3cyclictest1801034-21kworker/u8:2+flush-179:010:34:571
1737893995043,4cyclictest1823280-21latency_hist11:35:011
1737893995039,9cyclictest1776579-21kworker/u8:2+flush-179:009:25:181
1737891994943,4cyclictest1787986-21kworker/u8:1+events_unbound09:45:190
1737891994943,4cyclictest1768872-21kworker/u8:0+events_unbound09:00:210
1737893994841,5cyclictest1818498-21latency_hist11:20:001
1737893994839,6cyclictest1823265-21kworker/u8:1+events_unbound11:45:011
1737891994843,4cyclictest1823265-21kworker/u8:1+flush-179:011:45:230
1737891994842,3cyclictest1-21systemd09:20:000
1737891994820,1cyclictest0-21swapper/007:11:590
1737893994742,4cyclictest1768872-21kworker/u8:0+flush-179:009:05:211
1737893994738,7cyclictest1787986-21kworker/u8:1+flush-179:009:45:191
1737891994745,1cyclictest1765435-21kworker/u8:1+events_unbound08:40:240
1737893994643,2cyclictest1801034-21kworker/u8:2+events_unbound12:00:231
1737891994636,6cyclictest1734721-21kworker/u8:2+flush-179:007:45:210
1737893994538,5cyclictest1765678-21/usr/sbin/munin08:35:231
1737893994434,8cyclictest1776579-21kworker/u8:2+flush-179:009:25:011
1737891994437,5cyclictest1801034-21kworker/u8:2+events_unbound11:25:260
1737893994336,5cyclictest1213033-21systemd-journal11:53:531
1737893994335,7cyclictest1734721-21kworker/u8:2+flush-179:007:20:151
1737893994335,6cyclictest1834689-21latency_hist12:10:011
1737893994335,5cyclictest1810540-21latency_hist10:55:001
173789399430,2cyclictest714-21Xorg11:12:591
1737891994337,5cyclictest1801034-21kworker/u8:2+events_unbound11:20:240
1737891994337,5cyclictest1742541-21kworker/u8:3+events_unbound07:25:190
1737898994239,2cyclictest0-21swapper/309:08:593
1737893994237,4cyclictest1807355-21kworker/u8:1+flush-179:010:45:261
1737893994236,4cyclictest1768872-21kworker/u8:0+flush-179:008:50:151
1737893994235,5cyclictest1213033-21systemd-journal09:05:011
1737891994237,4cyclictest1768872-21kworker/u8:0+events_unbound09:30:170
1737891994234,5cyclictest1737751-21latency_hist07:10:020
173789899410,1cyclictest0-21swapper/308:49:553
1737891994137,3cyclictest1839509-21systemd-run12:25:010
1737891994137,3cyclictest1839509-21systemd-run12:25:010
1737891994136,4cyclictest1839506-21kworker/u8:2+events_unbound12:35:130
1737891994136,4cyclictest1768872-21kworker/u8:0+flush-179:009:10:200
173789199411,37cyclictest1763818-21basename08:30:000
1737898994037,2cyclictest0-21swapper/312:33:593
1737895994034,4cyclictest0-21swapper/208:49:542
173789599400,1cyclictest0-21swapper/210:49:592
1737893994036,2cyclictest0-21swapper/112:37:591
1737893994035,4cyclictest1804159-21kworker/u8:0+flush-179:010:40:241
1737893994031,7cyclictest1837918-21kworker/u8:1+events_unbound12:20:161
1737893994031,7cyclictest1837918-21kworker/u8:1+events_unbound12:20:161
173789399401,37cyclictest714-21Xorg11:10:001
173789399401,2cyclictest714-21Xorg07:34:591
1737891994038,1cyclictest0-21swapper/012:04:560
1737891994030,8cyclictest1213033-21systemd-journal08:13:540
1737891994026,12cyclictest1213033-21systemd-journal10:10:000
1737898993934,4cyclictest1837897-21turbostat12:20:003
1737893993935,3cyclictest1744213-21apt-config07:30:011
1737893993933,5cyclictest1791217-21kworker/u8:2+flush-179:010:10:231
1737891993932,5cyclictest1760594-21kworker/u8:2+flush-179:008:35:240
1737895993834,2cyclictest0-21swapper/209:08:592
1737893993835,2cyclictest714-21Xorg12:28:001
1737893993833,4cyclictest1797845-21kworker/u8:1+flush-179:010:24:551
1737891993831,5cyclictest484-21dbus-daemon12:30:000
1737891993830,6cyclictest1829898-21kworker/u8:0+events_unbound11:55:200
1737891993830,6cyclictest1829898-21kworker/u8:0+events_unbound11:55:200
1737891993830,5cyclictest0-21swapper/011:36:590
173789199380,1cyclictest0-21swapper/010:58:000
1737898993733,2cyclictest0-21swapper/312:37:593
173789899370,36cyclictest0-21swapper/311:23:593
1737895993734,2cyclictest0-21swapper/210:37:592
1737893993730,6cyclictest1833082-21kworker/u8:3+flush-179:012:15:151
1737891993729,6cyclictest1213033-21systemd-journal12:13:530
1737898993634,1cyclictest0-21swapper/308:24:583
173789899360,35cyclictest0-21swapper/311:09:593
173789899360,35cyclictest0-21swapper/309:14:003
173789899360,1cyclictest0-21swapper/310:38:003
173789899360,1cyclictest0-21swapper/307:34:593
1737895993634,1cyclictest0-21swapper/207:34:592
1737895993633,2cyclictest0-21swapper/211:23:592
173789599360,34cyclictest0-21swapper/210:54:592
173789599360,2cyclictest0-21swapper/208:21:592
1737893993630,5cyclictest1787987-21kworker/u8:3+flush-179:010:30:011
1737893993629,5cyclictest1801034-21kworker/u8:2+events_unbound10:35:201
1737891993631,4cyclictest1797845-21kworker/u8:1+flush-179:010:30:220
1737898993533,1cyclictest0-21swapper/311:51:593
1737898993533,1cyclictest0-21swapper/311:34:563
1737898993533,1cyclictest0-21swapper/309:44:553
1737898993532,2cyclictest0-21swapper/312:27:593
1737895993532,2cyclictest0-21swapper/212:33:592
1737895993532,2cyclictest0-21swapper/209:14:002
173789599350,27cyclictest0-21swapper/211:05:122
4577091340,12ptp4l441ktimers/310:35:003
231999340,2rtkit-daemon0-21swapper/108:22:491
1737898993432,1cyclictest1791186-21turbostat09:55:003
1737898993432,1cyclictest0-21swapper/309:58:003
1737898993428,5cyclictest1757175-21turbostat08:10:003
1737893993429,4cyclictest1830576-21gltestperf11:55:171
1737893993429,4cyclictest1830576-21gltestperf11:55:161
1737893993427,5cyclictest1768872-21kworker/u8:0+flush-179:008:55:191
1737895993330,2cyclictest0-21swapper/210:09:552
1737895993328,2cyclictest0-21swapper/209:44:542
1737898993230,1cyclictest0-21swapper/312:10:593
1737898993230,1cyclictest0-21swapper/309:39:543
173789899320,28cyclictest0-21swapper/310:00:033
173789899320,1cyclictest0-21swapper/311:13:003
1737895993228,2cyclictest0-21swapper/211:34:552
1737893993229,2cyclictest0-21swapper/111:44:591
1737893993227,4cyclictest1749252-21kworker/u8:0+flush-179:007:50:231
1737898993128,2cyclictest0-21swapper/310:18:593
173789899310,27cyclictest0-21swapper/307:10:123
1737895993128,2cyclictest0-21swapper/212:37:592
1737895993128,2cyclictest0-21swapper/211:51:592
1737895993127,2cyclictest0-21swapper/209:57:592
173789599310,29cyclictest0-21swapper/208:35:132
4577091300,7ptp4l441ktimers/310:49:593
1737898993028,1cyclictest0-21swapper/307:29:593
173789899300,27cyclictest1789592-21turbostat09:50:013
173789899300,26cyclictest0-21swapper/310:55:133
173789899300,26cyclictest0-21swapper/307:40:123
1737895993028,1cyclictest0-21swapper/212:20:002
1737895993027,2cyclictest0-21swapper/212:27:592
1737895993027,2cyclictest0-21swapper/212:22:002
1737895993027,2cyclictest0-21swapper/212:21:592
173789599300,29cyclictest0-21swapper/210:00:022
173789599300,27cyclictest0-21swapper/210:55:122
173789599300,27cyclictest0-21swapper/208:50:132
173789599300,26cyclictest0-21swapper/207:45:132
4577091290,7ptp4l441ktimers/311:20:003
173789899290,2cyclictest0-21swapper/307:45:133
173789899290,27cyclictest0-21swapper/311:45:033
173789899290,27cyclictest0-21swapper/309:15:133
173789899290,27cyclictest0-21swapper/308:10:113
173789599290,27cyclictest0-21swapper/212:10:132
173789599290,27cyclictest0-21swapper/211:45:032
173789599290,27cyclictest0-21swapper/209:35:122
173789599290,27cyclictest0-21swapper/209:15:142
173789599290,27cyclictest0-21swapper/208:10:112
173789599290,27cyclictest0-21swapper/207:10:122
173789599290,26cyclictest0-21swapper/207:40:002
173789599290,21cyclictest0-21swapper/210:30:122
4577091280,7ptp4l61490irq/134-eno1-TxRx-011:40:003
4577091280,7ptp4l441ktimers/309:05:013
4577091280,6ptp4l441ktimers/310:55:003
4577091280,6ptp4l441ktimers/310:15:003
4577091280,6ptp4l441ktimers/308:20:013
4577091280,6ptp4l441ktimers/308:00:003
1737898992826,1cyclictest0-21swapper/311:44:583
1737898992824,2cyclictest0-21swapper/311:56:593
1737898992824,2cyclictest0-21swapper/311:56:593
173789899280,27cyclictest0-21swapper/308:35:133
173789899280,27cyclictest0-21swapper/308:25:143
173789899280,26cyclictest0-21swapper/312:05:133
173789899280,25cyclictest1773425-21turbostat09:00:003
173789899280,1cyclictest0-21swapper/312:20:153
173789899280,1cyclictest0-21swapper/312:20:143
1737895992825,2cyclictest0-21swapper/212:05:132
1737895992825,2cyclictest0-21swapper/210:15:122
173789599280,2cyclictest0-21swapper/208:25:132
173789599280,2cyclictest0-21swapper/207:40:122
173789599280,26cyclictest0-21swapper/210:13:002
173789599280,26cyclictest0-21swapper/209:47:592
173789599280,25cyclictest0-21swapper/210:44:562
1737893992823,4cyclictest1760594-21kworker/u8:2+flush-179:008:32:541
4577091270,6ptp4l441ktimers/312:05:003
4577091270,6ptp4l441ktimers/309:30:013
4577091270,6ptp4l441ktimers/308:55:013
4577091270,6ptp4l441ktimers/308:45:003
4577091270,5ptp4l441ktimers/311:05:003
173789899270,2cyclictest1784551-21turbostat09:34:593
1737895992724,2cyclictest0-21swapper/211:14:552
173789599270,24cyclictest0-21swapper/209:30:012
173789599270,24cyclictest0-21swapper/208:57:592
4577091260,5ptp4l61490irq/134-eno1-TxRx-008:34:553
4577091260,5ptp4l441ktimers/308:04:563
1737898992623,2cyclictest0-21swapper/310:07:583
173789899260,24cyclictest0-21swapper/311:26:593
1737895992623,2cyclictest0-21swapper/209:52:592
1737895992623,2cyclictest0-21swapper/209:00:132
173789599260,2cyclictest0-21swapper/210:21:592
173789599260,24cyclictest0-21swapper/211:58:592
173789599260,24cyclictest0-21swapper/211:58:582
173789599260,24cyclictest0-21swapper/208:19:592
173789599260,24cyclictest0-21swapper/207:55:132
4577091250,6ptp4l61490irq/134-eno1-TxRx-007:39:553
4577091250,5ptp4l61490irq/134-eno1-TxRx-007:54:553
4577091250,5ptp4l61490irq/134-eno1-TxRx-007:24:553
4577091250,5ptp4l441ktimers/310:24:563
1737895992523,1cyclictest0-21swapper/208:45:002
1737895992523,1cyclictest0-21swapper/208:34:592
1737895992523,1cyclictest0-21swapper/208:10:002
1737895992522,2cyclictest0-21swapper/211:01:592
1737895992521,2cyclictest0-21swapper/211:41:592
4577091240,4ptp4l61490irq/134-eno1-TxRx-010:29:553
1737895992422,1cyclictest0-21swapper/207:29:592
1737895992421,2cyclictest0-21swapper/212:00:592
1737895992421,2cyclictest0-21swapper/211:26:592
4577091230,3ptp4l441ktimers/310:44:553
1737895992219,2cyclictest0-21swapper/211:20:012
1737898992118,2cyclictest1781375-21turbostat09:25:013
1737895992116,2cyclictest0-21swapper/207:52:582
1737895992018,1cyclictest0-21swapper/209:34:592
1737895992017,2cyclictest0-21swapper/208:01:592
1737895991916,2cyclictest0-21swapper/207:20:592
1737895991815,2cyclictest0-21swapper/210:25:132
1737893991815,2cyclictest0-21swapper/107:10:021
1737895991612,2cyclictest0-21swapper/209:20:132
1737895991513,1cyclictest0-21swapper/211:40:002
17378959930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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