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2026-06-10 - 21:49
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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 Jun 10, 2026 12:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
179365199121110,8cyclictest1853129-21latency_hist10:15:011
179365199116107,6cyclictest1867517-21kworker/u8:1+events_unbound11:20:001
17936519911290,17cyclictest1806452-21kworker/u8:3+flush-179:008:35:011
179364999111102,6cyclictest1815977-21latency_hist08:20:020
179364999111102,6cyclictest1815977-21latency_hist08:20:010
17936519910385,13cyclictest510-21rs:main1
1793649999888,7cyclictest1822341-21apt-get08:40:010
1793649999588,5cyclictest1825787-21latency_hist08:50:010
1793651999486,6cyclictest1827384-21apt-get08:55:031
1793649999484,7cyclictest1829200-21kworker/u8:0+flush-179:009:00:160
1793649999484,7cyclictest1829200-21kworker/u8:0+flush-179:009:00:150
1793649999385,5cyclictest1866394-21kworker/u8:0+events_unbound11:00:000
1793649999181,7cyclictest1885319-21kworker/u8:3+flush-179:012:00:210
1793651998982,5cyclictest1875919-21/usr/sbin/munin11:25:251
1793649998981,6cyclictest1872519-21kworker/u8:0+flush-179:011:50:210
1793649998677,7cyclictest1867517-21kworker/u8:1+flush-179:011:10:200
1793651998272,7cyclictest1213033-21systemd-journal12:05:011
1793651998267,11cyclictest1213033-21systemd-journal09:55:221
179364999811,77cyclictest1-21systemd12:30:010
1793649998075,4cyclictest1806452-21kworker/u8:3+flush-179:008:10:230
1793649998073,5cyclictest1849986-21kworker/u8:0+flush-179:010:20:000
1793649997973,5cyclictest1837243-21kworker/u8:3+flush-179:010:40:230
1793651997870,5cyclictest1885275-21latency_hist11:55:011
1793649997871,5cyclictest1837243-21kworker/u8:3+events_unbound10:05:150
1793649997870,6cyclictest1837243-21kworker/u8:3+flush-179:009:50:000
1793649997764,10cyclictest1891882-21kworker/u8:1+flush-179:012:30:220
1793649997662,9cyclictest1837243-21kworker/u8:3+events_unbound09:35:150
1793651997464,7cyclictest1872519-21kworker/u8:0+events_unbound11:50:001
1793649997465,7cyclictest1867517-21kworker/u8:1+flush-179:011:20:150
1793649997462,9cyclictest1880450-21apt-get11:38:350
1793649997462,9cyclictest1880450-21apt-get11:38:350
1793651997370,1cyclictest1798476-21kworker/u8:2+flush-179:007:40:011
1793649997367,4cyclictest1857936-21kworker/u8:2+flush-179:010:45:230
1793651997164,5cyclictest1837243-21kworker/u8:3+flush-179:009:30:131
1793649997160,8cyclictest1846746-21latency_hist09:55:020
1793649997158,10cyclictest1836156-21diskstats09:20:150
1793651996960,7cyclictest1848610-21apt-get10:00:121
1793649996964,3cyclictest1812832-21kworker/u8:2+flush-179:008:30:140
1793649996961,5cyclictest1827354-21kworker/u8:1+flush-179:009:15:150
1793651996749,13cyclictest1791900-21kworker/u8:0+events_unbound07:30:131
1793649996761,5cyclictest1893292-21kworker/u8:3+events_unbound12:35:240
1793649996758,7cyclictest1791900-21kworker/u8:0+flush-179:007:35:000
1793649996756,8cyclictest1834037-21kworker/u8:0+flush-179:009:55:210
1793649996754,10cyclictest1213033-21systemd-journal07:30:010
1793651996659,5cyclictest1-21systemd10:45:001
1793651996658,6cyclictest1834037-21kworker/u8:0+events_unbound09:45:001
1793651996657,7cyclictest1798476-21kworker/u8:2+flush-179:007:55:201
1793649996658,5cyclictest1878835-21kworker/u8:1+flush-179:011:40:240
1793649996657,6cyclictest1857936-21kworker/u8:2+events_unbound10:55:000
1793651996555,8cyclictest1872519-21kworker/u8:0+events_unbound12:10:001
1793651996554,9cyclictest1798476-21kworker/u8:2+flush-179:007:55:011
1793649996553,8cyclictest1213033-21systemd-journal08:41:350
1793651996351,9cyclictest1213033-21systemd-journal09:10:001
1793649996357,4cyclictest1858156-21apt-get10:30:110
1793649996357,3cyclictest1872519-21kworker/u8:0+events_unbound11:15:230
1793649996353,7cyclictest1806452-21kworker/u8:3+flush-179:008:00:000
1793651996254,6cyclictest1837243-21kworker/u8:3+flush-179:010:20:001
1793651996250,10cyclictest1213033-21systemd-journal08:55:011
1793649996259,2cyclictest1890094-21kworker/u8:2+events_unbound12:10:140
1793649996255,4cyclictest1787300-21kworker/u8:1+events_unbound07:15:100
1793649996254,6cyclictest1806452-21kworker/u8:3+flush-179:008:20:240
1793651996149,9cyclictest1213033-21systemd-journal11:38:351
1793651996149,9cyclictest1213033-21systemd-journal11:38:341
1793649996154,5cyclictest1791900-21kworker/u8:0+events_unbound07:50:220
1793649996153,6cyclictest1891882-21kworker/u8:1+flush-179:012:25:000
4577091600,37ptp4l61490irq/134-eno1-TxRx-007:05:053
1793651996051,7cyclictest1835600-21latency_hist09:20:011
1793649996055,3cyclictest1872519-21kworker/u8:0+flush-179:012:05:240
1793649996051,7cyclictest1890094-21kworker/u8:2+flush-179:012:15:210
1793651995950,7cyclictest1851529-21latency_hist10:10:011
1793651995948,8cyclictest1806452-21kworker/u8:3+flush-179:008:20:221
1793649995849,7cyclictest1857936-21kworker/u8:2+flush-179:011:25:240
1793649995849,7cyclictest1213033-21systemd-journal10:30:010
1793654995754,2cyclictest0-21swapper/210:53:002
1793649995752,4cyclictest1830813-21kworker/u8:2+flush-179:009:05:200
1793649995751,4cyclictest1830813-21kworker/u8:2+flush-179:009:25:210
1793649995751,4cyclictest1830813-21kworker/u8:2+flush-179:009:25:200
1793649995751,4cyclictest1798476-21kworker/u8:2+flush-179:007:45:000
1793649995751,4cyclictest1213033-21systemd-journal11:09:340
1793649995749,6cyclictest1849986-21kworker/u8:0+flush-179:010:10:140
1793651995646,7cyclictest510-21rs:main1
1793649995649,5cyclictest1791900-21kworker/u8:0+flush-179:007:10:130
1793649995644,9cyclictest1797100-21apt-get07:20:110
1793649995550,4cyclictest1857936-21kworker/u8:2+flush-179:010:38:340
1793649995550,4cyclictest1837243-21kworker/u8:3+events_unbound10:05:000
1793649995549,4cyclictest1837243-21kworker/u8:3+flush-179:010:20:200
1793649995549,4cyclictest1834037-21kworker/u8:0+flush-179:009:30:190
1793649995448,4cyclictest1857936-21kworker/u8:2+flush-179:011:30:360
1793649995448,4cyclictest1806452-21kworker/u8:3+flush-179:008:55:250
1793651995346,5cyclictest1806452-21kworker/u8:3+events_unbound08:45:251
1793651995245,6cyclictest1791900-21kworker/u8:0+flush-179:007:10:031
1793649995248,3cyclictest1834037-21kworker/u8:0+events_unbound09:40:200
1793651995145,4cyclictest1213033-21systemd-journal09:22:341
1793651995143,6cyclictest1837243-21kworker/u8:3+flush-179:010:20:241
1793651995143,6cyclictest1809867-21apt-get08:00:111
1793651995047,2cyclictest714-21Xorg11:58:591
1793649995047,2cyclictest1809048-21kworker/u8:1+events_unbound08:00:230
1793651994938,9cyclictest1869549-21kworker/u8:3+flush-179:011:10:001
1793649994945,3cyclictest1806452-21kworker/u8:3+flush-179:008:25:200
1793651994840,5cyclictest1803493-21apt-get07:40:101
1793649994843,4cyclictest1806452-21kworker/u8:3+flush-179:008:54:540
1793649994843,3cyclictest1791900-21kworker/u8:0+flush-179:007:48:350
1793651994744,2cyclictest714-21Xorg11:24:581
1793651994742,3cyclictest1-21systemd10:40:011
1793649994640,4cyclictest1878835-21kworker/u8:1+flush-179:011:45:020
1793649994640,4cyclictest1811161-21kworker/u8:0+events_unbound08:05:140
1793651994541,3cyclictest1894881-21systemd-run12:25:001
1793649994540,4cyclictest1791900-21kworker/u8:0+flush-179:007:35:190
1793651994440,3cyclictest1816022-21systemd-run08:20:011
1793651994440,3cyclictest1816022-21systemd-run08:20:001
1793651994437,5cyclictest1830832-21latency_hist09:05:021
1793651994437,5cyclictest1830832-21latency_hist09:05:011
1793649994438,5cyclictest1878835-21kworker/u8:1+flush-179:011:57:350
179365499430,1cyclictest0-21swapper/209:05:582
1793651994238,3cyclictest714-21Xorg08:36:591
1793651994238,3cyclictest1878893-21systemd-run11:35:001
179365199421,37cyclictest714-21Xorg09:37:581
1793656994139,1cyclictest0-21swapper/311:49:553
1793656994134,5cyclictest1877280-21turbostat11:30:003
1793656994133,6cyclictest1830841-21turbostat09:05:013
1793656994133,6cyclictest1830841-21turbostat09:05:003
179365199416,34cyclictest0-21swapper/109:28:581
179365199416,34cyclictest0-21swapper/109:28:581
1793651994137,3cyclictest1814411-21systemd-run08:15:011
1793651994131,8cyclictest1856567-21apt-get10:25:091
1793649994137,3cyclictest1830813-21kworker/u8:2+flush-179:009:14:350
1793656994034,4cyclictest1851536-21turbostat10:10:013
179365699400,39cyclictest1893266-21turbostat12:20:003
179365699400,38cyclictest1829248-21turbostat09:00:013
179365699400,1cyclictest0-21swapper/307:53:593
1793654994037,2cyclictest0-21swapper/211:56:582
1793651994034,4cyclictest1819157-21latency_hist08:30:001
1793656993934,3cyclictest1820755-21turbostat08:35:013
1793656993932,5cyclictest1811216-21turbostat08:05:003
179365699390,3cyclictest1870913-21turbostat11:14:553
179365699390,37cyclictest1899625-21turbostat12:40:003
179365699390,37cyclictest1835624-21turbostat09:20:003
1793654993935,2cyclictest0-21swapper/208:01:002
1793651993936,2cyclictest714-21Xorg10:55:591
179365199390,3cyclictest1800021-21munin-run07:30:001
1793656993836,1cyclictest0-21swapper/310:52:593
1793656993832,5cyclictest1857915-21turbostat10:30:003
179365699380,37cyclictest1890067-21turbostat12:10:003
179365699380,36cyclictest0-21swapper/308:16:003
179365699380,36cyclictest0-21swapper/308:15:593
179365499380,36cyclictest0-21swapper/212:22:592
179365499380,36cyclictest0-21swapper/207:27:592
179365499380,35cyclictest0-21swapper/210:59:542
179365499380,35cyclictest0-21swapper/208:58:582
179365199385,32cyclictest0-21swapper/108:40:121
1793651993835,2cyclictest1857936-21kworker/u8:2+events_unbound10:45:251
1793656993734,2cyclictest0-21swapper/310:34:543
1793654993735,1cyclictest0-21swapper/211:19:592
179365199377,19cyclictest1805067-21/usr/sbin/munin07:45:261
1793651993730,5cyclictest1845415-21apt-get09:50:111
1793656993634,1cyclictest0-21swapper/310:19:593
1793656993634,1cyclictest0-21swapper/310:10:593
179365699360,35cyclictest0-21swapper/309:39:553
179365699360,35cyclictest0-21swapper/308:40:593
179365699360,35cyclictest0-21swapper/307:34:593
179365699360,35cyclictest0-21swapper/307:18:593
1793654993633,2cyclictest0-21swapper/211:32:592
179365499360,34cyclictest0-21swapper/207:59:592
179365499360,1cyclictest0-21swapper/211:01:592
179365499360,1cyclictest0-21swapper/208:24:552
1793651993628,5cyclictest1867978-21apt-get11:00:121
1793656993533,1cyclictest0-21swapper/312:12:593
1793656993532,2cyclictest0-21swapper/307:42:593
179365699350,1cyclictest0-21swapper/312:23:593
179365699350,1cyclictest0-21swapper/308:06:583
1793654993532,2cyclictest0-21swapper/210:48:002
1793654993531,2cyclictest0-21swapper/209:50:592
179365499350,1cyclictest0-21swapper/212:31:592
179365499350,1cyclictest0-21swapper/210:11:582
179365199358,10cyclictest1896470-21munin-run12:30:011
179365199357,13cyclictest1798654-21cat07:25:011
1793651993530,4cyclictest1898021-21munin-run12:35:001
1793651993530,4cyclictest1791900-21kworker/u8:0+flush-179:007:10:181
1793649993532,2cyclictest1857936-21kworker/u8:2+events_unbound11:00:130
1793656993432,1cyclictest0-21swapper/308:54:583
1793654993431,2cyclictest0-21swapper/211:45:592
1793654993431,2cyclictest0-21swapper/211:07:002
1793654993431,2cyclictest0-21swapper/208:33:002
179365199349,10cyclictest1859493-21munin-run10:35:001
1793651993432,1cyclictest0-21swapper/109:48:001
179365199341,4cyclictest0-21swapper/112:35:131
1793651993410,8cyclictest714-21Xorg08:06:591
1793651993410,8cyclictest714-21Xorg07:16:591
1793656993327,5cyclictest1864283-21turbostat10:50:003
1793654993330,2cyclictest0-21swapper/211:40:582
1793654993330,2cyclictest0-21swapper/210:34:002
1793654993330,2cyclictest0-21swapper/210:21:592
1793651993328,4cyclictest1830813-21kworker/u8:2+flush-179:009:10:141
179365199332,4cyclictest0-21swapper/111:40:141
1793656993230,1cyclictest0-21swapper/311:32:003
1793654993229,2cyclictest0-21swapper/212:06:592
1793654993229,2cyclictest0-21swapper/209:31:592
1793654993229,2cyclictest0-21swapper/207:49:592
179365199329,8cyclictest714-21Xorg12:13:591
1793656993125,5cyclictest1882108-21turbostat11:45:003
1793656993125,5cyclictest1848351-21turbostat10:00:003
1793654993129,1cyclictest0-21swapper/209:05:002
1793654993129,1cyclictest0-21swapper/209:05:002
1793654993128,2cyclictest0-21swapper/208:14:542
1793654993128,2cyclictest0-21swapper/207:37:592
179365199317,12cyclictest1893272-21munin-run12:20:001
4577091300,7ptp4l441ktimers/309:54:563
4577091300,7ptp4l441ktimers/308:25:003
1793656993028,1cyclictest0-21swapper/309:05:593
1793656993027,2cyclictest0-21swapper/312:02:593
1793656993025,4cyclictest1819169-21turbostat08:30:003
179365699300,28cyclictest0-21swapper/311:00:033
179365699300,28cyclictest0-21swapper/309:20:123
1793654993028,1cyclictest0-21swapper/208:29:592
1793654993027,2cyclictest0-21swapper/211:25:132
1793654993027,2cyclictest0-21swapper/211:21:002
1793654993027,2cyclictest0-21swapper/210:38:582
1793654993027,2cyclictest0-21swapper/209:40:132
1793654993027,2cyclictest0-21swapper/208:53:592
1793654993027,2cyclictest0-21swapper/207:44:552
179365499300,28cyclictest0-21swapper/209:35:112
179365499300,28cyclictest0-21swapper/207:15:112
179365499300,27cyclictest0-21swapper/212:03:592
4577091290,7ptp4l61490irq/134-eno1-TxRx-009:15:013
4577091290,7ptp4l441ktimers/311:25:003
4577091290,7ptp4l441ktimers/310:05:003
1793656992927,1cyclictest0-21swapper/310:58:593
1793656992927,1cyclictest0-21swapper/309:44:593
1793656992926,2cyclictest0-21swapper/307:35:123
1793656992923,5cyclictest1822348-21turbostat08:40:013
1793656992922,5cyclictest1886870-21turbostat12:00:003
179365699290,28cyclictest0-21swapper/309:45:123
179365699290,27cyclictest0-21swapper/311:05:113
179365499290,28cyclictest0-21swapper/209:20:112
179365499290,27cyclictest0-21swapper/210:25:102
179365499290,27cyclictest0-21swapper/208:40:032
179365499290,27cyclictest0-21swapper/208:36:592
179365499290,27cyclictest0-21swapper/208:15:142
179365499290,27cyclictest0-21swapper/208:15:142
4577091280,5ptp4l441ktimers/311:20:013
4577091280,5ptp4l441ktimers/307:15:003
1793656992825,2cyclictest0-21swapper/308:13:593
179365699280,26cyclictest0-21swapper/310:35:123
1793654992825,2cyclictest0-21swapper/207:31:002
179365499280,2cyclictest0-21swapper/208:05:132
179365499280,26cyclictest0-21swapper/210:00:132
179365499280,26cyclictest0-21swapper/207:24:552
179365499280,26cyclictest0-21swapper/207:13:592
4577091270,6ptp4l61490irq/134-eno1-TxRx-010:24:553
4577091270,6ptp4l441ktimers/311:39:563
4577091270,6ptp4l441ktimers/311:39:563
4577091270,5ptp4l441ktimers/312:34:573
1793656992725,1cyclictest0-21swapper/309:28:593
1793656992725,1cyclictest0-21swapper/309:28:583
1793654992724,2cyclictest0-21swapper/212:13:592
1793654992724,2cyclictest0-21swapper/211:38:002
1793654992724,2cyclictest0-21swapper/211:37:592
1793654992724,2cyclictest0-21swapper/210:06:592
1793654992724,2cyclictest0-21swapper/209:28:592
1793654992724,2cyclictest0-21swapper/209:28:592
179365499270,1cyclictest0-21swapper/210:00:002
4577091260,6ptp4l441ktimers/308:50:013
4577091260,5ptp4l61490irq/134-eno1-TxRx-011:54:553
4577091260,5ptp4l61490irq/134-eno1-TxRx-008:00:003
4577091260,5ptp4l441ktimers/307:29:563
4577091260,5ptp4l441ktimers/307:24:553
1793656992624,1cyclictest0-21swapper/309:33:593
179365499260,2cyclictest0-21swapper/209:14:552
179365499260,24cyclictest0-21swapper/211:11:582
179365499260,24cyclictest0-21swapper/209:19:002
4577091250,4ptp4l61490irq/134-eno1-TxRx-010:44:563
4577091250,4ptp4l61490irq/134-eno1-TxRx-007:49:563
4577091240,4ptp4l61490irq/134-eno1-TxRx-012:29:563
231999210,12rtkit-daemon23940-21sendmail-mta07:08:150
1793654992118,2cyclictest0-21swapper/212:37:592
1793654992118,2cyclictest0-21swapper/210:43:592
1793654992115,3cyclictest1854729-21turbostat10:20:012
1793654991816,1cyclictest0-21swapper/208:50:002
1793654991815,2cyclictest0-21swapper/212:25:592
1793654991815,2cyclictest0-21swapper/211:54:552
1793654991815,2cyclictest0-21swapper/209:46:002
1793654991612,2cyclictest0-21swapper/212:15:592
1793654991412,1cyclictest0-21swapper/207:54:592
17936549930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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