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2026-05-12 - 16:02
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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 Tue May 12, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1795705999789,6cyclictest1839249-21latency_hist09:25:011
1795705999686,7cyclictest1869408-21kworker/u8:0+flush-179:011:20:001
1795705999583,9cyclictest1867327-21latency_hist10:50:011
1795703999382,7cyclictest1844283-21latency_hist09:40:010
1795705998981,6cyclictest1812140-21apt-get07:57:371
1795703998777,7cyclictest1886683-21latency_hist11:50:010
1795703998576,6cyclictest1213033-21systemd-journal12:30:010
1795705998274,6cyclictest1878714-21kworker/u8:2+flush-179:011:25:011
1795703998274,4cyclictest1829737-21kworker/u8:2+flush-179:009:00:010
1795705998171,7cyclictest1865745-21latency_hist10:45:011
1795703998171,8cyclictest1880554-21/usr/sbin/munin11:30:230
1795703998170,9cyclictest1822001-21apt-get08:30:090
1795703998169,10cyclictest1878985-21apt-get11:25:130
1795705997767,8cyclictest1856179-21apt-get10:15:121
1795705997666,8cyclictest1855913-21kworker/u8:0+flush-179:010:30:161
1795703997556,16cyclictest1888780-21apt-get11:55:140
1795705997465,6cyclictest1880315-21latency_hist11:30:011
1795705997465,6cyclictest1860705-21latency_hist10:30:011
1795705997465,6cyclictest1789254-21kworker/u8:1+flush-179:007:10:181
1795705997465,6cyclictest1789254-21kworker/u8:1+flush-179:007:10:181
1795703997467,4cyclictest1829737-21kworker/u8:2+flush-179:009:05:210
1795703997465,6cyclictest1829692-21latency_hist08:55:000
1795703997465,6cyclictest1829692-21latency_hist08:55:000
1795703997265,5cyclictest1889401-21kworker/u8:1+flush-179:012:00:250
1795705997164,5cyclictest1889401-21kworker/u8:1+flush-179:012:05:171
1795705997060,7cyclictest1213033-21systemd-journal07:52:371
1795705996858,8cyclictest1849818-21apt-get09:55:121
1795703996857,8cyclictest1831555-21apt-get09:00:120
1795703996857,8cyclictest1810535-21kworker/u8:0+flush-179:007:55:200
1795705996760,5cyclictest1798851-21kworker/u8:2+events_unbound07:50:011
1795703996762,3cyclictest1859355-21kworker/u8:1+flush-179:010:25:120
1795703996758,6cyclictest1851129-21kworker/u8:1+flush-179:010:10:230
179570799660,64cyclictest0-21swapper/208:48:002
1795703996663,2cyclictest0-21swapper/009:31:000
1795703996655,9cyclictest1847730-21apt-get09:50:000
1795705996359,3cyclictest1840869-21kworker/u8:1+flush-179:009:35:061
1795705996350,10cyclictest1213033-21systemd-journal12:40:011
1795703996355,6cyclictest1899928-21apt-get12:30:100
1795703996353,8cyclictest1815380-21latency_hist08:10:010
1795705996248,4cyclictest1795644-21kworker/u8:3+flush-179:007:15:221
1795703996253,7cyclictest1824935-21latency_hist08:40:010
1795709996058,1cyclictest0-21swapper/307:33:003
1795705996053,6cyclictest1855913-21kworker/u8:0+flush-179:010:15:001
1795705996052,7cyclictest1878714-21kworker/u8:2+flush-179:011:55:011
1795703995955,3cyclictest1795644-21kworker/u8:3+events_unbound07:15:140
1795703995951,6cyclictest1853013-21apt-get10:05:130
1795705995855,2cyclictest1855913-21kworker/u8:0+events_unbound10:20:231
1795705995851,5cyclictest1213033-21systemd-journal09:12:361
1795703995850,6cyclictest1863922-21kworker/u8:3+flush-179:010:40:250
1795703995849,7cyclictest1896757-21apt-get12:20:110
1795705995749,6cyclictest1885334-21kworker/u8:0+flush-179:011:55:021
1795705995747,8cyclictest1810594-21kworker/u8:1+flush-179:008:25:161
1795705995747,7cyclictest1842437-21apt-get09:35:001
1795703995651,4cyclictest1795644-21kworker/u8:3+events_unbound07:30:020
1795703995648,7cyclictest1810535-21kworker/u8:0+events_unbound08:20:000
1795703995648,6cyclictest1855913-21kworker/u8:0+flush-179:010:30:220
1795705995549,5cyclictest1867381-21kworker/u8:1+flush-179:010:54:561
1795705995546,5cyclictest1849592-21true09:55:001
1795705995544,9cyclictest1213033-21systemd-journal10:01:361
1795703995549,4cyclictest1808964-21latency_hist07:50:010
1795703995542,12cyclictest1855913-21kworker/u8:0+flush-179:010:15:170
1795705995445,7cyclictest1802239-21apt-get07:30:011
1795705995344,7cyclictest1213033-21systemd-journal10:55:361
1795705995342,9cyclictest1213033-21systemd-journal11:10:011
1795703995247,4cyclictest1863922-21kworker/u8:3+flush-179:010:50:240
1795703995243,7cyclictest1213033-21systemd-journal09:55:000
1795703995143,6cyclictest1888281-21apt-get11:55:000
1795703995139,10cyclictest1836312-21apt-get09:15:110
1795705995045,4cyclictest1795644-21kworker/u8:3+flush-179:007:40:231
1795705995044,5cyclictest1840869-21kworker/u8:1+flush-179:009:45:161
1795705995043,5cyclictest1818609-21kworker/u8:3+flush-179:008:45:211
1795705995043,5cyclictest1810535-21kworker/u8:0+flush-179:008:15:231
1795705995041,7cyclictest1795584-21latency_hist07:10:011
1795703995041,6cyclictest1-21systemd10:01:360
1795707994946,2cyclictest0-21swapper/210:00:592
1795703994941,6cyclictest1213033-21systemd-journal08:24:510
1795703994940,7cyclictest1213033-21systemd-journal11:00:000
1795705994843,4cyclictest1798851-21kworker/u8:2+flush-179:007:35:251
1795705994842,4cyclictest1896536-21kworker/u8:3+flush-179:012:30:001
1795705994841,5cyclictest1810535-21kworker/u8:0+flush-179:008:05:191
4577091470,13ptp4l61490irq/134-eno1-TxRx-007:10:003
1795705994743,3cyclictest1872403-21systemd-run11:05:011
1795705994739,6cyclictest1883521-21latency_hist11:40:021
1795705994739,6cyclictest1840869-21kworker/u8:1+flush-179:009:40:161
179570599470,44cyclictest1885106-21dump-pmu-power11:45:001
1795703994742,3cyclictest1213033-21systemd-journal12:07:370
1795703994741,5cyclictest1896536-21kworker/u8:3+events_unbound12:35:250
1795703994739,5cyclictest1885334-21kworker/u8:0+events_unbound12:15:000
1795709994644,1cyclictest0-21swapper/308:47:593
1795705994643,1cyclictest0-21swapper/108:40:591
1795705994641,4cyclictest1893342-21kworker/u8:2+flush-179:012:15:171
1795705994641,4cyclictest1810594-21kworker/u8:1+flush-179:008:20:241
1795705994636,8cyclictest1828362-21apt-get08:50:131
1795705994636,8cyclictest1828362-21apt-get08:50:121
1795703994642,3cyclictest1818609-21kworker/u8:3+flush-179:009:20:160
1795703994638,6cyclictest1857789-21apt-get10:20:110
1795703994638,6cyclictest1857503-21kworker/u8:2+flush-179:010:35:230
1795703994636,8cyclictest1869408-21kworker/u8:0+flush-179:011:05:000
1795705994536,7cyclictest1854340-21latency_hist10:10:011
1795703994542,2cyclictest0-21swapper/007:15:000
1795703994542,2cyclictest0-21swapper/007:14:590
1795703994538,5cyclictest1863922-21kworker/u8:3+flush-179:010:45:250
179570399451,2cyclictest714-21Xorg11:09:590
1795703994441,2cyclictest0-21swapper/008:41:000
1795703994439,4cyclictest1880553-21kworker/u8:1+flush-179:011:39:550
1795705994336,5cyclictest1818609-21kworker/u8:3+flush-179:008:35:221
1795705994335,6cyclictest1213033-21systemd-journal08:02:381
1795705994334,7cyclictest1832888-21latency_hist09:05:011
1795703994337,5cyclictest1863922-21kworker/u8:3+flush-179:011:10:240
1795703994337,5cyclictest1863922-21kworker/u8:3+flush-179:011:10:240
1795705994235,5cyclictest1834474-21latency_hist09:10:011
1795705994234,6cyclictest1893342-21kworker/u8:2+flush-179:012:15:001
1795703994235,6cyclictest1798851-21kworker/u8:2+flush-179:007:35:170
1795703994233,7cyclictest1213033-21systemd-journal07:25:000
179570399421,38cyclictest1885108-21apt11:45:000
1795709994139,1cyclictest0-21swapper/310:54:593
1795705994134,6cyclictest1880553-21kworker/u8:1+flush-179:011:30:151
179570599410,3cyclictest1886692-21cron11:49:591
179570399411,2cyclictest0-21swapper/008:29:000
1795705994033,5cyclictest1829737-21kworker/u8:2+flush-179:009:25:171
179570599402,32cyclictest1799062-21apt-get07:20:151
179570399400,2cyclictest0-21swapper/009:56:590
179570999390,37cyclictest1808972-21turbostat07:50:013
179570799390,36cyclictest0-21swapper/211:55:582
179570799390,36cyclictest0-21swapper/207:59:002
1795705993935,3cyclictest1837696-21systemd-run09:20:001
1795705993932,5cyclictest1213033-21systemd-journal08:34:531
1795703993934,4cyclictest1794066-21kworker/u8:0+flush-179:007:30:190
1795703993933,5cyclictest1810535-21kworker/u8:0+events_unbound08:00:150
1795703993931,6cyclictest1795644-21kworker/u8:3+flush-179:007:40:220
1795703993929,8cyclictest1893342-21kworker/u8:2+flush-179:012:15:200
179570399391,6cyclictest0-21swapper/008:45:120
179570999380,37cyclictest1862305-21turbostat10:35:003
179570799380,35cyclictest0-21swapper/211:40:012
179570799380,35cyclictest0-21swapper/208:25:592
179570799380,35cyclictest0-21swapper/207:32:592
1795705993833,4cyclictest1896536-21kworker/u8:3+flush-179:012:20:211
1795705993833,4cyclictest1810594-21kworker/u8:1+flush-179:008:10:151
1795703993835,2cyclictest0-21swapper/009:10:590
1795703993834,3cyclictest1810594-21kworker/u8:1+flush-179:008:10:110
1795709993732,4cyclictest1860716-21turbostat10:30:003
1795709993732,4cyclictest1852766-21turbostat10:09:553
1795707993734,2cyclictest0-21swapper/210:08:592
1795707993734,2cyclictest0-21swapper/209:33:592
1795707993734,2cyclictest0-21swapper/207:42:582
179570799370,35cyclictest0-21swapper/207:45:592
179570599370,1cyclictest0-21swapper/108:59:541
179570399370,1cyclictest0-21swapper/009:43:590
1795709993634,1cyclictest0-21swapper/307:10:593
1795709993634,1cyclictest0-21swapper/307:10:583
1795709993631,4cyclictest1896511-21turbostat12:20:013
179570999360,35cyclictest0-21swapper/311:40:593
179570999360,35cyclictest0-21swapper/311:24:553
179570999360,35cyclictest0-21swapper/311:19:583
179570999360,35cyclictest0-21swapper/310:39:553
179570999360,35cyclictest0-21swapper/308:18:593
179570999360,1cyclictest0-21swapper/312:29:553
179570999360,1cyclictest0-21swapper/308:29:563
1795707993634,1cyclictest0-21swapper/212:34:592
1795707993633,2cyclictest0-21swapper/211:03:592
179570799360,2cyclictest0-21swapper/208:33:002
1795705993630,5cyclictest1794066-21kworker/u8:0+flush-179:007:30:221
1795709993533,1cyclictest0-21swapper/309:46:593
1795709993530,4cyclictest1890131-21turbostat12:00:003
179570999350,1cyclictest0-21swapper/307:21:593
1795707993532,2cyclictest0-21swapper/209:22:592
1795707993532,2cyclictest0-21swapper/208:23:582
1795707993532,2cyclictest0-21swapper/208:17:592
179570799350,1cyclictest0-21swapper/212:15:002
1795705993530,4cyclictest1863922-21kworker/u8:3+flush-179:011:10:221
1795705993530,4cyclictest1863922-21kworker/u8:3+flush-179:011:10:211
1795703993530,4cyclictest1213033-21systemd-journal11:16:590
1795707993431,2cyclictest0-21swapper/211:19:552
1795707993431,2cyclictest0-21swapper/210:23:592
1795703993431,2cyclictest0-21swapper/011:23:590
1795703993326,5cyclictest0-21swapper/007:50:150
1795709993230,1cyclictest0-21swapper/312:39:553
1795709993230,1cyclictest0-21swapper/309:19:593
1795709993230,1cyclictest0-21swapper/308:34:593
1795709993230,1cyclictest0-21swapper/307:29:553
1795709993226,5cyclictest1873954-21turbostat11:10:003
1795707993230,1cyclictest0-21swapper/212:39:592
1795707993229,2cyclictest0-21swapper/212:15:592
1795707993229,2cyclictest0-21swapper/211:29:002
1795707993229,2cyclictest0-21swapper/207:28:582
1795707993229,2cyclictest0-21swapper/207:16:002
179570799320,30cyclictest0-21swapper/211:32:002
1795709993129,1cyclictest0-21swapper/311:29:553
1795709993129,1cyclictest0-21swapper/311:01:003
1795707993128,2cyclictest0-21swapper/207:36:002
179570599310,2cyclictest1890391-21apt-get12:00:141
231999300,2rtkit-daemon0-21swapper/009:29:170
1795709993028,1cyclictest0-21swapper/309:11:593
1795709993027,2cyclictest0-21swapper/310:40:023
1795709993025,4cyclictest1834488-21turbostat09:10:003
1795709993024,4cyclictest1890131-21turbostat12:04:563
1795707993027,2cyclictest0-21swapper/210:50:132
1795707993027,2cyclictest0-21swapper/209:12:592
179570799300,28cyclictest0-21swapper/210:30:122
1795705993027,2cyclictest0-21swapper/110:39:591
4577091290,7ptp4l441ktimers/308:45:013
1795709992926,2cyclictest0-21swapper/309:58:593
1795709992924,4cyclictest1875545-21turbostat11:15:003
1795709992924,4cyclictest1875545-21turbostat11:15:003
1795709992924,4cyclictest1855933-21turbostat10:15:003
179570999291,27cyclictest0-21swapper/307:35:143
1795707992926,2cyclictest0-21swapper/210:40:142
1795707992926,2cyclictest0-21swapper/209:50:012
1795707992926,2cyclictest0-21swapper/209:25:132
1795707992926,2cyclictest0-21swapper/209:03:002
1795707992926,2cyclictest0-21swapper/208:55:132
1795707992925,2cyclictest0-21swapper/210:55:592
179570799290,27cyclictest0-21swapper/211:40:132
179570799290,27cyclictest0-21swapper/211:20:132
179570799290,27cyclictest0-21swapper/210:10:142
179570799290,27cyclictest0-21swapper/209:40:032
179570799290,27cyclictest0-21swapper/208:00:142
179570799290,27cyclictest0-21swapper/207:10:142
179570799290,27cyclictest0-21swapper/207:10:132
179570799290,26cyclictest0-21swapper/210:25:592
4577091280,7ptp4l441ktimers/310:25:013
4577091280,6ptp4l441ktimers/312:15:003
4577091280,6ptp4l441ktimers/308:55:003
4577091280,6ptp4l441ktimers/308:55:003
4577091280,6ptp4l441ktimers/308:10:013
1795709992826,1cyclictest0-21swapper/311:54:583
1795709992826,1cyclictest0-21swapper/310:02:593
1795709992826,1cyclictest0-21swapper/309:20:133
1795709992826,1cyclictest0-21swapper/308:24:553
1795709992825,2cyclictest0-21swapper/307:40:133
179570999280,27cyclictest0-21swapper/309:50:013
179570999280,27cyclictest0-21swapper/308:55:143
179570999280,27cyclictest0-21swapper/308:00:143
179570999280,27cyclictest0-21swapper/307:53:593
179570999280,26cyclictest0-21swapper/312:20:133
179570999280,26cyclictest0-21swapper/311:35:143
179570999280,21cyclictest0-21swapper/309:25:133
1795707992826,1cyclictest0-21swapper/212:30:002
1795707992825,2cyclictest0-21swapper/210:48:592
179570799280,26cyclictest0-21swapper/212:03:582
179570799280,26cyclictest0-21swapper/211:10:132
179570799280,26cyclictest0-21swapper/211:10:122
4577091270,7ptp4l61490irq/134-eno1-TxRx-012:10:003
4577091270,6ptp4l441ktimers/311:50:003
4577091270,6ptp4l441ktimers/309:34:553
4577091270,6ptp4l441ktimers/308:15:003
1795709992722,4cyclictest1867342-21turbostat10:50:003
179570999270,1cyclictest0-21swapper/309:40:033
179570799270,25cyclictest0-21swapper/208:44:592
179570799270,1cyclictest0-21swapper/209:15:132
179570799270,1cyclictest0-21swapper/208:13:002
4577091260,6ptp4l441ktimers/310:20:013
4577091260,6ptp4l441ktimers/309:39:563
4577091260,5ptp4l441ktimers/311:35:013
179570999260,25cyclictest0-21swapper/312:30:593
1795707992623,2cyclictest0-21swapper/209:57:592
1795707992623,2cyclictest0-21swapper/208:51:582
1795707992623,2cyclictest0-21swapper/208:51:582
1795707992622,2cyclictest0-21swapper/211:47:592
179570799260,24cyclictest0-21swapper/208:06:592
4577091250,6ptp4l61490irq/134-eno1-TxRx-011:00:003
4577091250,5ptp4l61490irq/134-eno1-TxRx-009:05:003
4577091250,5ptp4l441ktimers/307:59:563
4577091250,4ptp4l441ktimers/308:39:553
1795707992523,1cyclictest0-21swapper/208:39:592
1795707992522,2cyclictest0-21swapper/210:19:002
4577091240,4ptp4l441ktimers/307:19:563
1795707992421,2cyclictest0-21swapper/209:49:552
1795707992420,2cyclictest0-21swapper/212:20:582
1795707992420,2cyclictest0-21swapper/211:50:132
1795707992420,2cyclictest0-21swapper/209:36:592
1795707992219,2cyclictest0-21swapper/210:35:592
1795705992217,4cyclictest1889401-21kworker/u8:1+flush-179:012:30:181
1795707992118,2cyclictest0-21swapper/207:21:002
1795707991917,1cyclictest0-21swapper/212:07:592
179570399192,13cyclictest1795704-21latency_hist07:10:010
1795707991815,2cyclictest0-21swapper/207:52:002
179570799106,3cyclictest351rcuc/211:10:012
17957079980,7cyclictest0-21swapper/209:06:442
17957079930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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