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2026-06-24 - 18:55
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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 24, 2026 12:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
191460499135127,6cyclictest1970765-21kworker/u8:0+flush-179:010:05:001
191460499127118,6cyclictest1985350-21latency_hist10:50:011
19146009911199,9cyclictest1964413-21latency_hist09:45:010
191460499110103,5cyclictest1975600-21kworker/u8:1+events_unbound11:00:011
19146009910892,12cyclictest1213033-21systemd-journal11:50:010
19146009910379,13cyclictest1951674-21apt-get09:05:120
19146049910290,9cyclictest1213033-21systemd-journal11:35:011
19146009910293,6cyclictest1213033-21systemd-journal08:20:010
19146009910293,6cyclictest1213033-21systemd-journal08:20:000
1914604999892,4cyclictest1986970-21kworker/u8:2+flush-179:011:10:231
1914604999892,4cyclictest1986970-21kworker/u8:2+flush-179:011:10:221
1914604999386,5cyclictest2007329-21kworker/u8:0+flush-179:012:10:231
1914604999386,5cyclictest1970765-21kworker/u8:0+flush-179:010:15:151
1914604999385,6cyclictest1980854-21diskstats10:35:151
1914604999380,3cyclictest1934699-21kworker/u8:1+flush-179:008:35:261
1914600999282,7cyclictest1940275-21latency_hist08:30:010
1914604999183,6cyclictest2004487-21kworker/u8:2+events_unbound11:55:011
1914600999181,8cyclictest1967836-21apt-get09:55:110
1914604999083,5cyclictest1998121-21kworker/u8:3+flush-179:012:05:251
1914604999083,5cyclictest1975600-21kworker/u8:1+flush-179:011:20:151
1914604999082,6cyclictest2001241-21kworker/u8:2+events_unbound11:40:001
1914604999081,7cyclictest2009258-21kworker/u8:1+flush-179:012:25:011
1914600999081,6cyclictest1916096-21kworker/u8:1+flush-179:007:35:010
1914604998982,5cyclictest1978714-21kworker/u8:3+flush-179:010:50:221
1914604998978,8cyclictest1213033-21systemd-journal07:20:001
1914604998881,5cyclictest1965976-21kworker/u8:1+flush-179:009:55:261
1914604998880,5cyclictest1924097-21latency_hist07:40:001
1914604998879,6cyclictest2007329-21kworker/u8:0+flush-179:012:15:151
1914600998875,10cyclictest1213033-21systemd-journal10:55:000
1914604998777,6cyclictest1956236-21kworker/u8:2+flush-179:009:25:211
1914604998776,8cyclictest1978714-21kworker/u8:3+flush-179:011:10:011
1914604998579,4cyclictest1934699-21kworker/u8:1+flush-179:008:15:211
1914604998579,4cyclictest1934699-21kworker/u8:1+flush-179:008:15:211
1914604998578,4cyclictest1998121-21kworker/u8:3+flush-179:011:40:211
1914600998577,6cyclictest2001262-21latency_hist11:40:010
1914604998376,5cyclictest1998121-21kworker/u8:3+flush-179:011:45:211
1914600998372,7cyclictest1975600-21kworker/u8:1+events_unbound11:30:000
1914604998273,6cyclictest1970811-21kworker/u8:2+events_unbound10:25:221
1914600998173,5cyclictest1975600-21kworker/u8:1+flush-179:011:20:180
1914600998171,8cyclictest1213033-21systemd-journal11:20:000
1914604998072,5cyclictest1977140-21latency_hist10:25:011
1914604997971,5cyclictest1971013-21/usr/sbin/munin10:05:241
1914604997870,6cyclictest1925953-21apt-get07:45:111
1914600997872,4cyclictest1925698-21latency_hist07:45:000
1914600997870,6cyclictest1991967-21apt-get11:10:110
1914600997870,6cyclictest1991967-21apt-get11:10:100
1914604997771,4cyclictest1919558-21apt-get07:25:111
1914604997767,7cyclictest1963008-21cat09:40:021
1914600997763,11cyclictest1993329-21kworker/u8:0+events_unbound11:45:000
1914604997668,5cyclictest2017210-21kworker/u8:3+events_unbound12:35:001
1914604997667,6cyclictest1213033-21systemd-journal08:10:001
1914604997565,7cyclictest1963363-21kworker/u8:2+events_unbound09:45:231
1914604997562,4cyclictest1943428-21kworker/u8:0+events_unbound08:45:251
1914604997562,4cyclictest1943428-21kworker/u8:0+events_unbound08:45:241
1914600997565,8cyclictest1987190-21apt-get10:55:090
1914604997367,4cyclictest1930441-21kworker/u8:2+flush-179:008:25:281
1914604997365,6cyclictest1213033-21systemd-journal11:30:001
1914604997164,5cyclictest1940261-21kworker/u8:3+events_unbound08:55:231
1914604997161,7cyclictest1930441-21kworker/u8:2+events_unbound08:20:031
1914604997161,7cyclictest1930441-21kworker/u8:2+events_unbound08:20:031
1914604997160,8cyclictest1925686-21kworker/u8:0+flush-179:007:45:001
1914604997160,6cyclictest1986970-21kworker/u8:2+flush-179:011:00:211
1914604997156,5cyclictest1998121-21kworker/u8:3+events_unbound12:05:001
1914604997063,5cyclictest1925686-21kworker/u8:0+flush-179:007:50:151
1914604996963,4cyclictest2009258-21kworker/u8:1+flush-179:012:35:201
1914604996959,7cyclictest1965976-21kworker/u8:1+flush-179:009:55:001
1914604996948,11cyclictest1913036-21kworker/u8:0+flush-179:007:20:191
1914600996955,10cyclictest1213033-21systemd-journal08:45:010
1914604996862,4cyclictest1986970-21kworker/u8:2+flush-179:011:15:171
1914604996860,6cyclictest1949790-21kworker/u8:0+flush-179:009:15:151
1914604996860,5cyclictest2009258-21kworker/u8:1+flush-179:012:25:231
1914600996854,10cyclictest1951407-21kworker/u8:1+flush-179:009:15:220
1914604996762,3cyclictest1925686-21kworker/u8:0+flush-179:008:10:121
1914600996756,9cyclictest1982394-21cp10:40:020
1914604996661,4cyclictest1951407-21kworker/u8:1+flush-179:009:20:251
1914604996659,5cyclictest1967616-21kworker/u8:3+flush-179:010:10:241
1914600996654,9cyclictest1981923-21apt-get10:40:000
1914604996549,8cyclictest1940261-21kworker/u8:3+events_unbound09:00:251
1914600996558,5cyclictest1959407-21kworker/u8:3+flush-179:009:35:240
1914600996554,8cyclictest1916096-21kworker/u8:1+flush-179:007:40:000
1914600996538,13cyclictest1972399-21systemd-run10:10:000
1914604996458,4cyclictest1959407-21kworker/u8:3+flush-179:009:35:171
1914600996461,2cyclictest0-21swapper/011:58:590
1914600996452,9cyclictest1213033-21systemd-journal10:30:000
1914604996352,7cyclictest1951407-21kworker/u8:1+flush-179:009:30:221
1914600996355,6cyclictest1986970-21kworker/u8:2+flush-179:011:00:150
1914604996257,4cyclictest1943428-21kworker/u8:0+flush-179:008:50:241
1914604996257,4cyclictest1925686-21kworker/u8:0+flush-179:007:55:191
1914604996257,4cyclictest1925686-21kworker/u8:0+flush-179:007:55:181
1914600996253,6cyclictest1267077-21kworker/u8:2+flush-179:007:10:240
1914600996152,6cyclictest1998121-21kworker/u8:3+flush-179:012:05:280
1914600996150,8cyclictest1213033-21systemd-journal08:24:560
1914600996150,8cyclictest1213033-21systemd-journal08:24:550
1914604996053,6cyclictest2004487-21kworker/u8:2+flush-179:011:58:411
1914600995951,7cyclictest1974201-21apt-get10:15:100
1914600995949,7cyclictest2007329-21kworker/u8:0+flush-179:012:10:140
1914600995750,5cyclictest1945310-21apt-get08:45:110
1914600995750,5cyclictest1945310-21apt-get08:45:110
1914600995727,20cyclictest0-21swapper/010:50:010
1914600995646,7cyclictest1980314-21latency_hist10:35:010
1914604995546,7cyclictest1949790-21kworker/u8:0+events_unbound09:10:241
1914604995546,7cyclictest1949790-21kworker/u8:0+events_unbound09:10:241
1914600995549,4cyclictest2009258-21kworker/u8:1+flush-179:012:25:180
191460099550,53cyclictest1941869-21cron08:35:000
1914604995447,6cyclictest1934699-21kworker/u8:1+flush-179:008:40:241
1914604995446,6cyclictest1925686-21kworker/u8:0+flush-179:008:00:191
1914604995347,5cyclictest1975600-21kworker/u8:1+flush-179:010:44:561
1914600995344,7cyclictest1930441-21kworker/u8:2+flush-179:008:05:230
1914600995344,7cyclictest1913036-21kworker/u8:0+flush-179:007:25:230
1914604995245,5cyclictest1916096-21kworker/u8:1+flush-179:007:30:211
1914600995142,7cyclictest1975812-21apt-get10:20:100
1914600995141,8cyclictest2007892-21apt-get12:00:110
1914600995141,7cyclictest1940261-21kworker/u8:3+flush-179:009:00:140
1914600994943,4cyclictest1967616-21kworker/u8:3+flush-179:010:00:150
1914600994941,6cyclictest1913036-21kworker/u8:0+flush-179:007:15:210
4577091480,13ptp4l61490irq/134-eno1-TxRx-007:10:013
1914600994842,4cyclictest1943428-21kworker/u8:0+flush-179:008:50:190
191460099480,45cyclictest0-21swapper/011:50:110
1914604994742,4cyclictest1951407-21kworker/u8:1+flush-179:009:05:271
1914600994743,3cyclictest1960990-21systemd-run09:35:000
1914600994739,6cyclictest2012630-21/usr/sbin/munin12:15:210
1914600994738,6cyclictest2017210-21kworker/u8:3+events_unbound12:35:220
1914600994639,5cyclictest1940261-21kworker/u8:3+flush-179:008:55:220
1914600994538,5cyclictest1928867-21latency_hist07:55:020
1914600994537,6cyclictest1213033-21systemd-journal07:25:000
1914600994340,2cyclictest0-21swapper/007:46:590
191460099430,6cyclictest1959387-21perf09:30:000
1914600994236,5cyclictest1930441-21kworker/u8:2+flush-179:008:00:000
1914600994236,5cyclictest1930441-21kworker/u8:2+flush-179:008:00:000
1914600994234,6cyclictest1925686-21kworker/u8:0+flush-179:008:10:210
1914600994225,15cyclictest2018768-21/usr/sbin/munin12:35:000
191460099421,39cyclictest1999677-21apt11:35:010
1914609994139,1cyclictest0-21swapper/207:15:002
1914600994133,6cyclictest1213033-21systemd-journal09:50:420
1914600994132,7cyclictest1213033-21systemd-journal08:02:490
1914610994037,2cyclictest0-21swapper/309:09:593
1914604994032,6cyclictest1267077-21kworker/u8:2+flush-179:007:10:191
1914600994035,4cyclictest2015625-21systemd-run12:25:010
1914600994030,8cyclictest510-21rs:main0
191461099390,4cyclictest2020369-21turbostat12:40:003
191461099390,4cyclictest1973951-21turbostat10:15:003
191460999390,36cyclictest0-21swapper/210:04:592
1914600993932,5cyclictest1967616-21kworker/u8:3+flush-179:010:10:210
191461099380,37cyclictest0-21swapper/307:20:593
1914609993834,2cyclictest0-21swapper/211:58:592
1914609993833,3cyclictest0-21swapper/211:05:592
1914610993735,1cyclictest0-21swapper/311:05:593
1914610993734,2cyclictest0-21swapper/311:58:593
1914610993734,2cyclictest0-21swapper/308:41:003
1914610993732,4cyclictest0-21swapper/307:40:003
191461099370,36cyclictest0-21swapper/310:04:593
1914609993735,1cyclictest0-21swapper/209:09:592
1914609993734,2cyclictest0-21swapper/207:58:002
1914609993734,2cyclictest0-21swapper/207:57:592
1914609993733,2cyclictest0-21swapper/212:18:592
1914609993732,2cyclictest0-21swapper/208:40:592
191460999370,35cyclictest0-21swapper/212:33:592
191460999370,35cyclictest0-21swapper/212:09:592
191460999370,35cyclictest0-21swapper/207:20:592
191460999370,2cyclictest0-21swapper/209:17:592
191460999370,29cyclictest0-21swapper/207:36:592
1914604993734,2cyclictest1975600-21kworker/u8:1+flush-179:010:30:151
1914610993634,1cyclictest0-21swapper/312:18:583
191461099360,35cyclictest0-21swapper/310:52:003
191461099360,35cyclictest0-21swapper/309:34:593
191461099360,1cyclictest0-21swapper/312:10:003
191460999360,33cyclictest0-21swapper/212:10:592
191460999360,2cyclictest0-21swapper/210:05:132
191460999360,2cyclictest0-21swapper/208:20:022
191460999360,2cyclictest0-21swapper/208:20:012
191460999360,1cyclictest0-21swapper/208:37:582
1914600993634,1cyclictest0-21swapper/009:13:590
1914600993634,1cyclictest0-21swapper/009:13:590
191460099360,21cyclictest1956730-21sh09:20:160
191461099350,34cyclictest0-21swapper/308:39:553
191461099350,21cyclictest0-21swapper/310:40:023
191460999350,32cyclictest0-21swapper/211:42:592
191460999350,2cyclictest0-21swapper/211:50:102
1914604993530,4cyclictest1930441-21kworker/u8:2+flush-179:008:30:141
1914600993533,1cyclictest0-21swapper/011:08:590
1914600993529,4cyclictest1942116-21apt-get08:35:120
1914610993432,1cyclictest0-21swapper/310:34:553
1914610993432,1cyclictest0-21swapper/308:09:543
191461099340,29cyclictest0-21swapper/311:42:593
1914609993431,2cyclictest0-21swapper/210:34:552
1914609993430,2cyclictest0-21swapper/210:56:592
1914609993430,2cyclictest0-21swapper/208:09:552
191460999340,2cyclictest0-21swapper/211:10:132
191460999340,2cyclictest0-21swapper/211:10:132
191460999340,27cyclictest0-21swapper/210:40:022
1914610993331,1cyclictest0-21swapper/310:56:593
1914610993330,2cyclictest0-21swapper/307:32:593
1914610993225,5cyclictest0-21swapper/308:20:033
1914610993225,5cyclictest0-21swapper/308:20:023
191461099320,30cyclictest0-21swapper/311:10:133
191461099320,30cyclictest0-21swapper/311:10:123
191461099320,1cyclictest0-21swapper/312:10:593
1914609993228,2cyclictest0-21swapper/212:38:592
1914609993228,2cyclictest0-21swapper/207:32:582
1914609993226,5cyclictest0-21swapper/208:20:032
1914609993226,5cyclictest0-21swapper/208:20:022
1914610993129,1cyclictest0-21swapper/311:29:543
1914610993129,1cyclictest0-21swapper/308:29:563
191461099310,29cyclictest0-21swapper/310:05:133
191461099310,1cyclictest0-21swapper/311:50:113
1914609993127,2cyclictest0-21swapper/211:29:552
1914609993127,2cyclictest0-21swapper/208:29:552
4577091300,7ptp4l441ktimers/308:15:013
1914610993027,2cyclictest0-21swapper/310:45:123
1914610993023,6cyclictest0-21swapper/308:20:013
191461099300,27cyclictest0-21swapper/308:45:133
191461099300,27cyclictest0-21swapper/308:45:133
1914609993027,2cyclictest0-21swapper/210:35:132
191460999300,2cyclictest0-21swapper/212:24:552
191460999300,2cyclictest0-21swapper/210:50:142
191460999300,29cyclictest0-21swapper/209:30:132
1914610992926,2cyclictest0-21swapper/311:45:133
1914610992923,5cyclictest0-21swapper/308:20:023
191461099290,27cyclictest0-21swapper/310:35:123
191461099290,27cyclictest0-21swapper/310:15:123
191461099290,27cyclictest0-21swapper/309:45:133
191461099290,27cyclictest0-21swapper/309:40:033
191461099290,27cyclictest0-21swapper/309:35:153
191461099290,27cyclictest0-21swapper/307:50:123
191461099290,27cyclictest0-21swapper/307:45:123
191461099290,27cyclictest0-21swapper/307:15:123
1914609992926,2cyclictest0-21swapper/211:45:132
1914609992926,2cyclictest0-21swapper/211:16:582
1914609992926,2cyclictest0-21swapper/211:03:592
1914609992926,2cyclictest0-21swapper/210:45:122
1914609992926,2cyclictest0-21swapper/209:45:132
191460999290,27cyclictest0-21swapper/211:20:132
191460999290,27cyclictest0-21swapper/210:15:122
191460999290,27cyclictest0-21swapper/209:40:042
191460999290,27cyclictest0-21swapper/209:35:142
191460999290,27cyclictest0-21swapper/208:52:582
191460999290,27cyclictest0-21swapper/208:45:142
191460999290,27cyclictest0-21swapper/208:45:132
191460999290,27cyclictest0-21swapper/207:45:122
191460999290,26cyclictest0-21swapper/209:24:592
191460999290,26cyclictest0-21swapper/207:50:112
4577091280,6ptp4l61490irq/134-eno1-TxRx-009:55:003
4577091280,6ptp4l441ktimers/312:05:003
4577091280,6ptp4l441ktimers/310:00:013
1914610992826,1cyclictest0-21swapper/309:00:113
1914610992825,2cyclictest0-21swapper/312:22:003
1914609992825,2cyclictest0-21swapper/210:22:002
1914609992825,2cyclictest0-21swapper/209:00:112
1914609992825,2cyclictest0-21swapper/207:15:112
4577091270,6ptp4l61490irq/134-eno1-TxRx-010:25:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-008:35:003
4577091270,6ptp4l441ktimers/312:35:003
4577091270,6ptp4l441ktimers/310:30:003
4577091270,6ptp4l441ktimers/309:00:003
1914610992725,1cyclictest0-21swapper/311:20:133
191461099270,1cyclictest0-21swapper/309:25:003
1914609992724,2cyclictest0-21swapper/212:00:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-011:35:013
4577091260,6ptp4l61490irq/134-eno1-TxRx-007:59:553
4577091260,6ptp4l61490irq/134-eno1-TxRx-007:59:553
4577091260,6ptp4l61490irq/134-eno1-TxRx-007:30:003
4577091260,5ptp4l441ktimers/309:30:013
4577091260,5ptp4l441ktimers/309:19:553
4577091260,5ptp4l441ktimers/309:15:013
4577091260,5ptp4l441ktimers/309:15:003
231999260,3rtkit-daemon2318-21rtkit-daemon07:07:431
1914610992622,2cyclictest0-21swapper/312:26:003
191461099260,1cyclictest0-21swapper/308:52:593
1914609992622,2cyclictest0-21swapper/208:02:592
1914609992621,2cyclictest0-21swapper/209:53:592
1914609992621,2cyclictest0-21swapper/207:42:002
191460999260,24cyclictest0-21swapper/208:55:132
191460999260,24cyclictest0-21swapper/208:33:002
4577091250,4ptp4l441ktimers/311:19:553
4577091250,4ptp4l441ktimers/311:04:553
4577091250,4ptp4l441ktimers/308:05:013
4577091250,4ptp4l441ktimers/307:14:593
1914610992523,1cyclictest0-21swapper/311:39:593
1914609992521,2cyclictest0-21swapper/212:26:002
1914609992521,2cyclictest0-21swapper/211:32:592
1914610992422,1cyclictest0-21swapper/307:41:593
1914609992421,2cyclictest0-21swapper/208:14:592
1914609992321,1cyclictest0-21swapper/211:39:592
1914609992321,1cyclictest0-21swapper/210:29:592
191460099230,20cyclictest1914497-21latency_hist07:10:020
1914609991915,2cyclictest0-21swapper/209:27:002
1914609991714,2cyclictest0-21swapper/210:14:552
19146099985,2cyclictest0-21swapper/209:58:072
19146099985,2cyclictest0-21swapper/209:13:502
19146099985,2cyclictest0-21swapper/209:13:492
19146099970,6cyclictest0-21swapper/207:25:042
19146099940,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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