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2026-06-08 - 00:05
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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 792 highest latencies:
System rackeslot6.osadl.org (updated Sun Jun 07, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
198709699117109,5cyclictest2006381-21latency_hist08:10:000
198709699115104,8cyclictest2011145-21kworker/u8:1+flush-179:008:30:220
19870999910896,9cyclictest2094720-21latency_hist12:40:011
19870999910799,6cyclictest2080091-21kworker/u8:3+flush-179:012:20:241
19870969910792,11cyclictest1213033-21systemd-journal09:15:000
19870999910393,6cyclictest2024165-21latency_hist09:05:011
19870969910293,7cyclictest2027734-21kworker/u8:2+events_unbound09:20:000
19870969910290,9cyclictest2011166-21latency_hist08:25:020
19870969910290,9cyclictest2011166-21latency_hist08:25:010
19870969910091,7cyclictest2031080-21kworker/u8:1+flush-179:009:30:010
1987096999988,8cyclictest1996585-21latency_hist07:40:020
1987099999888,7cyclictest1213033-21systemd-journal07:55:001
1987099999887,7cyclictest2061322-21apt-get11:00:001
1987096999785,9cyclictest1990231-21kworker/u8:2+flush-179:007:20:230
1987099999687,6cyclictest2086479-21latency_hist12:15:001
1987099999686,7cyclictest2016194-21latency_hist08:40:011
1987099999678,16cyclictest2045397-21kworker/u8:3+flush-179:010:34:591
1987096999689,4cyclictest2058355-21kworker/u8:1+events_unbound11:15:010
1987099999488,4cyclictest2046967-21latency_hist10:15:011
1987096999284,5cyclictest2006426-21kworker/u8:3+flush-179:008:25:230
1987096999284,5cyclictest2006426-21kworker/u8:3+flush-179:008:25:230
1987096999183,6cyclictest2006637-21apt-get08:10:110
1987099998878,8cyclictest2073202-21kworker/u8:1+events_unbound12:30:001
1987096998883,4cyclictest2073202-21kworker/u8:1+flush-179:012:10:250
1987096998678,5cyclictest2080091-21kworker/u8:3+events_unbound12:05:170
1987099998579,4cyclictest1213033-21systemd-journal11:35:011
1987099998575,7cyclictest2058355-21kworker/u8:1+flush-179:010:50:241
1987099998575,7cyclictest2058355-21kworker/u8:1+flush-179:010:50:241
1987096998576,6cyclictest1984183-21kworker/u8:0+flush-179:007:15:250
1987096998479,3cyclictest2032876-21kworker/u8:0+flush-179:009:40:150
1987096998476,5cyclictest2053321-21kworker/u8:0+flush-179:011:25:150
1987096998474,7cyclictest1998168-21latency_hist07:45:000
1987099998272,7cyclictest1972663-21kworker/u8:1+flush-179:007:10:261
1987096998175,4cyclictest2024139-21kworker/u8:0+flush-179:009:05:160
1987096998167,11cyclictest2073234-21apt-get11:35:010
1987096998076,3cyclictest2080091-21kworker/u8:3+flush-179:012:25:230
1987096998074,4cyclictest2069519-21kworker/u8:2+flush-179:011:35:240
1987096998074,4cyclictest2009532-21kworker/u8:0+flush-179:008:20:000
1987096998072,5cyclictest2073202-21kworker/u8:1+events_unbound11:50:240
1987096998068,8cyclictest2037400-21kworker/u8:2+flush-179:009:55:200
1987099997970,6cyclictest1999753-21latency_hist07:50:021
1987096997972,4cyclictest2019381-21latency_hist08:50:010
1987096997971,6cyclictest2037400-21kworker/u8:2+events_unbound10:39:590
1987096997970,6cyclictest2017766-21kworker/u8:2+events_unbound09:00:000
1987099997869,6cyclictest2048587-21latency_hist10:20:001
1987096997869,6cyclictest2073202-21kworker/u8:1+flush-179:012:15:210
1987096997770,5cyclictest2037400-21kworker/u8:2+flush-179:010:20:200
1987096997769,5cyclictest2058355-21kworker/u8:1+flush-179:010:50:210
1987096997769,5cyclictest2058355-21kworker/u8:1+flush-179:010:50:210
1987096997661,6cyclictest2088126-21kworker/u8:2+events_unbound12:30:240
1987096997569,4cyclictest1984183-21kworker/u8:0+flush-179:008:05:000
1987099997459,12cyclictest2002933-21latency_hist08:00:011
1987096997466,5cyclictest2058355-21kworker/u8:1+flush-179:011:20:210
1987096997464,8cyclictest2037400-21kworker/u8:2+events_unbound09:45:230
1987096997464,7cyclictest2073202-21kworker/u8:1+flush-179:011:55:150
1987099997366,4cyclictest2083306-21latency_hist12:05:021
1987096997367,4cyclictest2037400-21kworker/u8:2+flush-179:010:30:150
1987096997367,4cyclictest2037400-21kworker/u8:2+flush-179:010:15:220
1987096997366,4cyclictest2053321-21kworker/u8:0+events_unbound10:40:250
1987096997364,6cyclictest1990231-21kworker/u8:2+flush-179:007:30:190
1987099997161,8cyclictest2042459-21apt-get10:00:111
1987096997164,5cyclictest2017766-21kworker/u8:2+flush-179:008:50:160
1987099997060,7cyclictest1213033-21systemd-journal11:40:001
1987096997065,4cyclictest2011145-21kworker/u8:1+flush-179:008:44:550
1987096997064,4cyclictest2058355-21kworker/u8:1+flush-179:011:00:210
1987096997054,5cyclictest2053321-21kworker/u8:0+flush-179:011:15:150
1987099996958,9cyclictest1984183-21kworker/u8:0+flush-179:007:35:011
1987099996958,8cyclictest2053321-21kworker/u8:0+flush-179:011:15:221
1987096996964,4cyclictest2031080-21kworker/u8:1+events_unbound09:25:000
1987096996964,3cyclictest2042158-21kworker/u8:0+flush-179:010:10:140
1987099996858,7cyclictest2084893-21latency_hist12:10:001
1987096996762,4cyclictest2073202-21kworker/u8:1+flush-179:012:35:250
1987096996759,5cyclictest2017766-21kworker/u8:2+flush-179:009:00:230
1987096996757,8cyclictest1999783-21kworker/u8:2+events_unbound07:55:230
1987096996660,4cyclictest1984183-21kworker/u8:0+flush-179:007:13:370
4577091650,30ptp4l441ktimers/307:05:253
1987099996558,5cyclictest2017766-21kworker/u8:2+flush-179:008:45:161
1987099996555,8cyclictest2048833-21apt-get10:20:121
1987096996559,4cyclictest2037400-21kworker/u8:2+flush-179:010:00:240
1987096996557,5cyclictest2075050-21kworker/u8:0+flush-179:011:45:140
1987096996555,7cyclictest1213033-21systemd-journal12:05:000
1987096996458,4cyclictest1999783-21kworker/u8:2+flush-179:007:50:220
1987096996455,5cyclictest2042158-21kworker/u8:0+flush-179:010:05:130
1987096996154,4cyclictest2032876-21kworker/u8:0+flush-179:009:35:010
1987099996053,5cyclictest2044048-21apt-get10:05:111
1987100995956,2cyclictest0-21swapper/211:32:582
1987099995949,8cyclictest2008222-21apt-get08:15:131
1987099995948,8cyclictest2017766-21kworker/u8:2+flush-179:008:55:161
1987096995953,4cyclictest1984183-21kworker/u8:0+events_unbound07:45:250
1987104995754,2cyclictest0-21swapper/311:32:593
1987099995750,5cyclictest1213033-21systemd-journal09:26:361
1987096995750,5cyclictest1992505-21kworker/u8:1+flush-179:007:25:190
1987096995748,7cyclictest2073202-21kworker/u8:1+events_unbound11:40:160
1987099995645,9cyclictest1995206-21apt-get07:35:121
1987096995651,4cyclictest2058355-21kworker/u8:1+events_unbound11:05:280
1987096995651,4cyclictest2037400-21kworker/u8:2+flush-179:009:54:550
1987099995549,4cyclictest2028110-21apt-get09:15:121
1987099995341,7cyclictest2006360-21kworker/u8:2+flush-179:008:15:011
1987099995245,5cyclictest1986963-21latency_hist07:10:011
1987096995243,7cyclictest2056769-21/usr/sbin/munin10:45:180
1987099995143,6cyclictest2066330-21latency_hist11:15:021
1987099995142,7cyclictest2063419-21apt-get11:05:131
1987096995146,4cyclictest2045397-21kworker/u8:3+flush-179:010:29:560
1987096995146,4cyclictest2045397-21kworker/u8:3+flush-179:010:29:560
1987096995146,4cyclictest2031080-21kworker/u8:1+flush-179:009:35:240
1987099994940,7cyclictest2017766-21kworker/u8:2+events_unbound08:55:001
1987099994940,6cyclictest2003445-21/usr/sbin/munin08:00:161
1987099994939,7cyclictest2051749-21latency_hist10:30:011
1987099994939,7cyclictest2051749-21latency_hist10:30:011
1987099994840,6cyclictest2073202-21kworker/u8:1+flush-179:011:40:211
1987099994838,8cyclictest2080091-21kworker/u8:3+flush-179:012:00:001
1987096994844,3cyclictest2053321-21kworker/u8:0+flush-179:010:55:220
1987099994739,6cyclictest1213033-21systemd-journal09:55:011
1987099994738,6cyclictest2077174-21/usr/sbin/munin11:45:181
1987099994737,8cyclictest2053321-21kworker/u8:0+events_unbound11:25:241
1987096994742,3cyclictest1213033-21systemd-journal08:37:360
1987099994438,3cyclictest2024139-21kworker/u8:0+events_unbound09:10:011
1987099994436,5cyclictest321-21hwrng08:08:591
1987099994339,2cyclictest714-21Xorg10:36:591
1987099994336,5cyclictest2040850-21apt-get09:55:111
1987096994337,4cyclictest2080091-21kworker/u8:3+flush-179:012:20:200
198710499420,35cyclictest0-21swapper/307:39:593
1987099994238,3cyclictest2058355-21kworker/u8:1+flush-179:011:00:191
1987099994237,3cyclictest2069571-21gpgv11:25:001
1987099994236,4cyclictest1984183-21kworker/u8:0+flush-179:007:15:171
198710499410,39cyclictest2037431-21turbostat09:45:003
1987100994137,2cyclictest0-21swapper/210:49:562
1987099994136,4cyclictest2013044-21systemd-run08:30:001
1987099994136,4cyclictest2013044-21systemd-run08:30:001
1987099994135,5cyclictest2091536-21turbostat12:34:541
1987099994113,12cyclictest1992129-21cat07:25:141
1987104994038,1cyclictest0-21swapper/308:24:563
1987104994038,1cyclictest0-21swapper/308:24:553
198710499400,38cyclictest2058134-21turbostat10:50:013
198710499400,38cyclictest2045396-21turbostat10:09:593
198710499400,38cyclictest2039023-21turbostat09:49:593
198710499400,38cyclictest2009572-21turbostat08:20:003
1987099994032,6cyclictest2032876-21kworker/u8:0+flush-179:009:40:011
198710499390,4cyclictest2043799-21turbostat10:05:003
198710499390,37cyclictest2094707-21turbostat12:40:003
198710099390,36cyclictest0-21swapper/212:35:592
198710099390,36cyclictest0-21swapper/212:34:002
198710099390,36cyclictest0-21swapper/208:51:592
198710099390,36cyclictest0-21swapper/208:49:552
198710099390,36cyclictest0-21swapper/208:04:552
198710099390,36cyclictest0-21swapper/207:59:562
1987099993930,7cyclictest2086734-21apt-get12:15:111
1987104993832,5cyclictest2042204-21turbostat10:00:013
1987104993831,5cyclictest2088111-21turbostat12:20:003
198710499380,37cyclictest2067930-21turbostat11:20:003
1987100993835,1cyclictest0-21swapper/211:14:592
198710099380,36cyclictest0-21swapper/211:28:002
1987099993834,2cyclictest714-21Xorg08:22:001
1987099993834,2cyclictest714-21Xorg08:21:591
1987099993831,6cyclictest2078778-21apt-get11:50:111
1987104993734,2cyclictest0-21swapper/309:13:593
1987104993734,2cyclictest0-21swapper/307:18:003
198710499370,35cyclictest0-21swapper/308:29:593
198710499370,35cyclictest0-21swapper/308:29:593
1987100993734,2cyclictest0-21swapper/209:29:592
1987100993734,1cyclictest0-21swapper/209:15:012
1987100993733,2cyclictest0-21swapper/211:59:002
1987100993733,2cyclictest0-21swapper/211:52:582
1987100993733,2cyclictest0-21swapper/210:30:592
1987100993733,2cyclictest0-21swapper/208:13:592
198710099370,35cyclictest0-21swapper/209:42:592
198710099370,35cyclictest0-21swapper/209:21:592
198710099370,34cyclictest0-21swapper/207:25:012
198710099370,2cyclictest0-21swapper/210:13:592
1987099993730,5cyclictest2016869-21kworker/u8:0+events_unbound08:40:231
1987099993730,5cyclictest0-21swapper/109:40:111
1987104993634,1cyclictest0-21swapper/311:26:593
1987104993634,1cyclictest0-21swapper/310:26:003
1987104993634,1cyclictest0-21swapper/310:26:003
1987104993634,1cyclictest0-21swapper/310:13:003
1987104993634,1cyclictest0-21swapper/309:50:593
1987104993633,2cyclictest0-21swapper/309:29:593
198710499360,35cyclictest0-21swapper/311:45:593
198710499360,35cyclictest0-21swapper/310:22:583
198710499360,35cyclictest0-21swapper/310:17:593
198710499360,35cyclictest0-21swapper/308:49:553
198710499360,35cyclictest0-21swapper/307:59:553
198710499360,29cyclictest0-21swapper/308:04:553
1987100993634,1cyclictest0-21swapper/212:20:012
1987100993634,1cyclictest0-21swapper/210:00:012
1987100993633,2cyclictest0-21swapper/211:45:002
1987100993632,2cyclictest0-21swapper/209:16:592
198710099360,2cyclictest0-21swapper/210:17:592
198710099360,2cyclictest0-21swapper/208:29:592
198710099360,2cyclictest0-21swapper/208:29:592
1987099993633,2cyclictest0-21swapper/109:33:591
1987104993532,2cyclictest0-21swapper/308:13:593
198710499350,34cyclictest0-21swapper/309:19:593
1987100993532,2cyclictest0-21swapper/209:45:592
1987100993532,2cyclictest0-21swapper/208:56:002
1987100993531,2cyclictest0-21swapper/208:31:592
198710099350,1cyclictest0-21swapper/212:08:592
1987099993530,4cyclictest2426-10pipewire-media-07:20:221
1987099993530,4cyclictest2025767-21apt-get09:10:031
1987099993529,4cyclictest714-21Xorg10:48:581
1987099993528,4cyclictest0-21swapper/108:31:591
1987104993432,1cyclictest0-21swapper/311:52:593
1987104993432,1cyclictest0-21swapper/311:14:593
1987100993430,2cyclictest0-21swapper/211:18:582
1987100993430,2cyclictest0-21swapper/210:05:592
1987100993430,2cyclictest0-21swapper/210:00:592
1987100993430,2cyclictest0-21swapper/208:16:002
1987104993331,1cyclictest0-21swapper/311:58:593
1987104993331,1cyclictest0-21swapper/311:44:593
1987104993331,1cyclictest0-21swapper/310:30:593
1987104993330,2cyclictest0-21swapper/308:56:003
1987100993330,2cyclictest0-21swapper/208:05:592
1987100993329,2cyclictest0-21swapper/207:36:592
198710099330,31cyclictest0-21swapper/207:12:592
1987099993330,2cyclictest0-21swapper/109:24:591
198710499320,30cyclictest0-21swapper/309:23:593
198710499320,24cyclictest0-21swapper/312:13:003
1987100993229,2cyclictest0-21swapper/210:44:542
1987100993228,2cyclictest0-21swapper/211:21:592
1987100993228,2cyclictest0-21swapper/210:29:002
1987100993228,2cyclictest0-21swapper/210:28:592
1987100993228,2cyclictest0-21swapper/209:03:592
1987100993228,2cyclictest0-21swapper/208:21:592
1987100993228,2cyclictest0-21swapper/208:21:592
1987104993129,1cyclictest0-21swapper/308:31:593
1987104993128,2cyclictest0-21swapper/311:04:593
1987104993128,2cyclictest0-21swapper/308:05:593
1987100993128,2cyclictest0-21swapper/207:52:592
1987100993127,2cyclictest0-21swapper/210:55:592
1987100993127,2cyclictest0-21swapper/207:27:592
198710099310,2cyclictest0-21swapper/212:12:592
1987104993027,2cyclictest0-21swapper/312:20:123
1987104993027,2cyclictest0-21swapper/310:40:133
1987104993027,2cyclictest0-21swapper/307:53:003
1987104993026,2cyclictest0-21swapper/312:25:033
198710499300,27cyclictest0-21swapper/311:05:143
1987100993027,2cyclictest0-21swapper/212:25:022
1987100993027,2cyclictest0-21swapper/209:35:122
198710099300,28cyclictest0-21swapper/211:35:032
198709999305,10cyclictest2037797-21expr09:45:141
1987099993026,3cyclictest321-21hwrng10:40:231
4577091290,7ptp4l441ktimers/311:00:003
4577091290,6ptp4l441ktimers/310:54:593
4577091290,6ptp4l441ktimers/310:54:593
231999290,16rtkit-daemon1985960-21df_inode07:05:160
1987104992926,2cyclictest0-21swapper/312:32:593
1987104992926,2cyclictest0-21swapper/311:35:033
1987104992926,2cyclictest0-21swapper/311:21:593
1987104992926,2cyclictest0-21swapper/309:03:593
198710499290,27cyclictest0-21swapper/309:35:133
1987100992926,2cyclictest0-21swapper/211:49:542
1987100992926,2cyclictest0-21swapper/207:30:122
1987100992926,2cyclictest0-21swapper/207:18:592
198710099290,2cyclictest0-21swapper/211:00:022
198710099290,27cyclictest0-21swapper/212:20:122
198710099290,27cyclictest0-21swapper/207:45:132
198710099290,21cyclictest0-21swapper/211:05:152
4577091280,6ptp4l61490irq/134-eno1-TxRx-012:05:003
1987104992826,1cyclictest0-21swapper/308:51:593
1987104992826,1cyclictest0-21swapper/307:30:123
1987104992825,2cyclictest0-21swapper/307:45:133
1987104992825,2cyclictest0-21swapper/307:27:593
1987104992825,2cyclictest0-21swapper/307:14:593
1987100992824,2cyclictest0-21swapper/208:37:592
198710099280,25cyclictest0-21swapper/207:43:002
4577091270,6ptp4l61490irq/134-eno1-TxRx-010:40:003
1987104992725,1cyclictest0-21swapper/312:05:143
1987104992724,2cyclictest0-21swapper/308:42:593
1987100992724,2cyclictest0-21swapper/210:50:592
1987100992724,2cyclictest0-21swapper/210:50:592
1987099992724,1cyclictest0-21swapper/107:44:551
4577091260,6ptp4l441ktimers/309:35:013
4577091260,6ptp4l441ktimers/309:10:013
4577091260,6ptp4l441ktimers/307:44:563
4577091260,6ptp4l441ktimers/307:25:003
1987100992622,2cyclictest0-21swapper/209:54:542
198710099260,2cyclictest0-21swapper/212:01:592
198710099260,2cyclictest0-21swapper/208:42:002
198710099260,24cyclictest0-21swapper/210:22:592
1987104992522,2cyclictest0-21swapper/308:37:593
1987100992321,1cyclictest0-21swapper/209:05:592
1987100992118,2cyclictest0-21swapper/210:38:592
1987100992118,2cyclictest0-21swapper/209:31:592
19871009941,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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