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2026-03-26 - 18:37
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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 376 highest latencies:
System (updated Thu Mar 26, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19060589911185,22cyclictest1969984-21latency_hist10:25:011
1906058999986,10cyclictest1966526-21latency_hist10:15:021
1906058999861,24cyclictest1932274-21latency_hist08:30:011
1906056999787,8cyclictest1930686-21latency_hist08:25:020
1906058999387,4cyclictest1969964-21kworker/u8:1+flush-179:010:30:241
1906058999080,7cyclictest1949839-21latency_hist09:25:011
1906056998882,4cyclictest2003655-21kworker/u8:0+flush-179:012:10:210
1906056998780,6cyclictest2003722-21kworker/u8:3+flush-179:012:20:000
1906058998573,6cyclictest1966513-21kworker/u8:2+events_unbound10:15:021
1906058998369,12cyclictest1990662-21kworker/u8:0+flush-179:011:35:011
1906056998375,6cyclictest1990662-21kworker/u8:0+flush-179:012:00:010
1906056998375,6cyclictest1990662-21kworker/u8:0+flush-179:012:00:000
1906058997969,7cyclictest1924318-21latency_hist08:05:021
1906056997869,7cyclictest2011876-21/usr/sbin/munin12:35:230
1906056997770,5cyclictest1902447-21kworker/u8:1+events_unbound07:20:120
1906056997769,6cyclictest1914733-21apt-get07:35:110
1906056997768,7cyclictest510-21rs:main0
1906056997670,5cyclictest1945101-21kworker/u8:3+events_unbound09:55:240
1906056997670,5cyclictest1945101-21kworker/u8:3+events_unbound09:55:240
1906056997467,5cyclictest1905457-21kworker/u8:3+events_unbound07:50:210
1906056997467,4cyclictest1945101-21kworker/u8:3+flush-179:009:20:210
1906056997365,7cyclictest1929054-21kworker/u8:2+flush-179:008:29:550
1906058997262,8cyclictest1999150-21apt-get11:55:111
1906058997262,8cyclictest1999150-21apt-get11:55:101
1906058997262,8cyclictest1921121-21latency_hist07:55:001
1906056997265,5cyclictest1912376-21kworker/u8:0+flush-179:008:10:140
1906056997166,4cyclictest1-21systemd11:20:000
1906056997063,5cyclictest1912376-21kworker/u8:0+events_unbound08:35:180
1906056997058,8cyclictest1995461-21latency_hist11:45:010
1906058996860,5cyclictest1905457-21kworker/u8:3+events_unbound07:25:031
1906056996863,4cyclictest1981798-21kworker/u8:0+flush-179:011:09:560
1906056996862,4cyclictest1969964-21kworker/u8:1+events_unbound10:55:230
1906058996757,7cyclictest1982722-21latency_hist11:05:011
1906056996761,3cyclictest1945101-21kworker/u8:3+flush-179:009:25:190
1906058996662,3cyclictest1937075-21kworker/u8:1+flush-179:008:54:561
1906056996656,8cyclictest2010305-21apt-get12:30:120
1906056996560,3cyclictest1964921-21kworker/u8:0+events_unbound10:15:140
1906058996456,6cyclictest1925937-21kworker/u8:3+events_unbound08:15:001
1906058996455,7cyclictest1961497-21apt-get10:00:001
1906058996455,7cyclictest1961497-21apt-get10:00:001
1906056996458,4cyclictest1971621-21kworker/u8:3+flush-179:010:45:210
1906056996457,5cyclictest1986150-21kworker/u8:3+flush-179:011:25:200
1906056996356,5cyclictest1990662-21kworker/u8:0+flush-179:011:35:210
1906056996256,4cyclictest1969964-21kworker/u8:1+flush-179:010:40:000
1906056996255,6cyclictest2003722-21kworker/u8:3+events_unbound12:25:200
1906058996155,4cyclictest1912376-21kworker/u8:0+events_unbound08:45:001
1906058996154,6cyclictest1912376-21kworker/u8:0+flush-179:008:10:001
1906058996151,8cyclictest1986150-21kworker/u8:3+flush-179:011:25:211
1906056996155,4cyclictest1937075-21kworker/u8:1+flush-179:008:50:210
1906056996154,5cyclictest1912376-21kworker/u8:0+flush-179:007:40:190
1906056996153,5cyclictest1971621-21kworker/u8:3+events_unbound10:40:240
1906058996058,2cyclictest0-21swapper/107:47:581
1906056996052,5cyclictest1990662-21kworker/u8:0+events_unbound11:30:200
1906058995952,5cyclictest1990662-21kworker/u8:0+events_unbound11:45:251
1906058995950,7cyclictest1950076-21/usr/sbin/munin09:25:221
1906056995954,4cyclictest1954658-21kworker/u8:1+flush-179:009:50:170
1906056995953,4cyclictest1961396-21kworker/u8:1+flush-179:010:05:170
1906056995952,5cyclictest2000739-21kworker/u8:2+events_unbound12:00:240
1906056995952,5cyclictest1945101-21kworker/u8:3+flush-179:009:30:230
1906056995952,4cyclictest1938736-21kworker/u8:3+events_unbound09:00:010
1906058995852,4cyclictest1987553-21kworker/u8:4+flush-179:011:24:541
1906058995851,5cyclictest1938736-21kworker/u8:3+flush-179:009:00:201
1906058995850,5cyclictest1992254-21kworker/u8:1+events_unbound12:05:241
1906056995853,4cyclictest1937075-21kworker/u8:1+flush-179:008:44:560
1906056995848,8cyclictest2008460-21latency_hist12:25:010
1906056995844,11cyclictest1964921-21kworker/u8:0+events_unbound10:20:120
1906058995749,6cyclictest1956208-21latency_hist09:45:011
1906056995749,6cyclictest1985032-21kworker/u8:2+events_unbound11:14:590
1906056995651,4cyclictest1937075-21kworker/u8:1+flush-179:009:15:220
1906056995650,5cyclictest714-21Xorg07:47:590
1906056995650,5cyclictest1952774-21kworker/u8:2+events_unbound09:35:230
1906056995550,4cyclictest1905457-21kworker/u8:3+flush-179:007:15:260
1906056995548,5cyclictest1957784-21kworker/u8:0+events_unbound10:00:120
1906056995545,7cyclictest266-21systemd-journal09:48:570
1906056995544,8cyclictest1938676-21kworker/u8:2+events_unbound09:00:140
1906056995449,4cyclictest1995961-21kworker/u8:3+events_unbound11:50:230
1906056995448,4cyclictest1932805-21kworker/u8:3+flush-179:008:30:210
1906058995345,6cyclictest1902447-21kworker/u8:1+flush-179:007:25:011
1906058995245,5cyclictest1957784-21kworker/u8:0+flush-179:010:00:201
1906056995246,4cyclictest1969964-21kworker/u8:1+flush-179:010:30:210
1906058995148,2cyclictest266-21systemd-journal07:45:011
1906058995145,4cyclictest1971621-21kworker/u8:3+flush-179:010:45:171
1906058995145,4cyclictest1954658-21kworker/u8:1+events_unbound09:50:241
1906058995142,7cyclictest266-21systemd-journal08:59:591
1906056995141,7cyclictest1927725-21kworker/u8:1+events_unbound08:15:200
1906058995044,4cyclictest1971621-21kworker/u8:3+events_unbound10:50:141
1906058995043,5cyclictest1902447-21kworker/u8:1+flush-179:007:10:221
4577091490,24ptp4l61490irq/134-eno1-TxRx-007:05:273
1906058994940,7cyclictest1946898-21apt-get09:15:121
1906058994939,7cyclictest1916103-21latency_hist07:40:001
1906058994843,4cyclictest1921156-21kworker/u8:2+events_unbound07:55:241
1906058994842,4cyclictest1953271-21apt-get09:35:101
1906056994842,5cyclictest1987553-21kworker/u8:4+events_unbound11:20:230
1906056994842,4cyclictest1961396-21kworker/u8:1+flush-179:010:15:000
1906056994839,7cyclictest1902447-21kworker/u8:1+flush-179:007:10:110
190606499470,5cyclictest1997315-21turbostat11:49:593
1906056994742,4cyclictest1912376-21kworker/u8:0+flush-179:008:45:200
1906056994740,5cyclictest1969964-21kworker/u8:1+events_unbound10:25:250
1906058994641,3cyclictest714-21Xorg10:37:591
1906058994639,5cyclictest1905457-21kworker/u8:3+flush-179:007:15:221
1906056994641,4cyclictest1971621-21kworker/u8:3+events_unbound10:50:180
1906056994641,3cyclictest1912376-21kworker/u8:0+events_unbound08:05:180
1906056994640,5cyclictest1937075-21kworker/u8:1+events_unbound09:10:130
1906058994538,5cyclictest2003722-21kworker/u8:3+events_unbound12:25:131
1906058994536,7cyclictest1912376-21kworker/u8:0+flush-179:008:45:181
1906058994438,4cyclictest1981798-21kworker/u8:0+flush-179:011:15:111
1906058994436,6cyclictest1992254-21kworker/u8:1+events_unbound12:05:001
4577091430,4ptp4l441ktimers/307:54:563
1906058994334,7cyclictest1945312-21apt-get09:10:101
1906058994334,7cyclictest1933865-21apt-get08:31:441
1906056994335,6cyclictest1969964-21kworker/u8:1+flush-179:011:00:130
190605699430,41cyclictest1912897-21apt07:30:000
1906060994239,2cyclictest0-21swapper/208:29:002
190606499410,39cyclictest1959656-21turbostat09:55:003
190606099410,1cyclictest0-21swapper/210:29:562
1906058994135,5cyclictest1945101-21kworker/u8:3+flush-179:009:45:251
1906058994134,5cyclictest1981144-21latency_hist11:00:011
190605899410,40cyclictest1984321-21turbostat11:14:561
1906056994139,1cyclictest0-21swapper/009:09:550
1906056994136,4cyclictest2003655-21kworker/u8:0+flush-179:012:09:550
190606499400,38cyclictest1995467-21turbostat11:45:003
190605899401,37cyclictest714-21Xorg12:11:581
190606499390,37cyclictest1981149-21turbostat11:04:553
190606099390,37cyclictest0-21swapper/210:19:592
1906058993934,3cyclictest2013243-21munin-run12:40:011
190605899390,37cyclictest714-21Xorg10:43:591
1906056993936,1cyclictest1952774-21kworker/u8:2+flush-179:009:40:210
1906056993934,4cyclictest1921156-21kworker/u8:2+flush-179:008:00:160
190606099380,36cyclictest0-21swapper/212:31:002
1906058993831,6cyclictest1966513-21kworker/u8:2+flush-179:010:25:201
1906058993831,5cyclictest1992507-21/usr/sbin/munin11:35:231
1906056993835,2cyclictest0-21swapper/007:57:590
1906064993732,4cyclictest1925911-21turbostat08:10:013
190606499370,36cyclictest0-21swapper/312:01:593
1906060993734,2cyclictest0-21swapper/210:59:592
1906060993734,2cyclictest0-21swapper/209:57:592
1906060993734,2cyclictest0-21swapper/209:57:592
190606099370,35cyclictest0-21swapper/208:17:582
190606099370,35cyclictest0-21swapper/207:59:002
190606099370,1cyclictest0-21swapper/211:38:592
190605899376,30cyclictest281ktimers/112:30:141
1906058993733,2cyclictest714-21Xorg11:41:581
190606499360,35cyclictest0-21swapper/312:16:593
190606499360,35cyclictest0-21swapper/311:09:563
190606499360,35cyclictest0-21swapper/310:25:003
190606499360,35cyclictest0-21swapper/308:46:583
190606499360,1cyclictest0-21swapper/308:27:593
1906060993633,2cyclictest0-21swapper/210:05:592
190606099360,1cyclictest0-21swapper/209:14:582
1906064993533,1cyclictest0-21swapper/308:00:593
1906064993532,2cyclictest0-21swapper/307:24:593
190606499350,34cyclictest0-21swapper/309:39:553
1906060993532,2cyclictest0-21swapper/212:19:002
1906058993531,3cyclictest714-21Xorg10:06:591
1906058993528,5cyclictest1981798-21kworker/u8:0+events_unbound11:05:281
1906058993526,6cyclictest2007130-21apt-get12:20:101
4577091340,3ptp4l61490irq/134-eno1-TxRx-010:55:113
1906064993429,4cyclictest1914482-21turbostat07:35:003
1906060993431,2cyclictest0-21swapper/211:51:592
1906064993331,1cyclictest0-21swapper/312:21:003
190606499330,2cyclictest0-21swapper/310:10:123
190606499330,27cyclictest0-21swapper/308:35:133
1906060993331,1cyclictest0-21swapper/208:04:582
1906060993330,2cyclictest0-21swapper/209:07:592
1906060993330,2cyclictest0-21swapper/208:52:592
1906058993330,2cyclictest714-21Xorg09:06:001
1906058993326,5cyclictest0-21swapper/109:30:141
1906056993328,4cyclictest1902447-21kworker/u8:1+events_unbound07:33:330
190606499320,26cyclictest0-21swapper/307:35:123
1906060993229,2cyclictest0-21swapper/210:31:592
1906060993229,2cyclictest0-21swapper/210:21:592
1906060993229,2cyclictest0-21swapper/208:11:002
1906060993229,2cyclictest0-21swapper/207:48:582
190606099320,30cyclictest0-21swapper/211:33:592
1906058993225,5cyclictest0-21swapper/108:35:141
1906058993222,8cyclictest1913145-21apt-get07:30:101
190605899320,7cyclictest714-21Xorg08:16:591
231999310,19rtkit-daemon1904669-21acpi07:05:100
1906064993129,1cyclictest0-21swapper/307:14:003
1906064993124,5cyclictest0-21swapper/310:00:123
190606499310,29cyclictest0-21swapper/308:15:133
1906060993128,2cyclictest0-21swapper/211:40:592
1906060993128,2cyclictest0-21swapper/211:05:592
1906060993128,2cyclictest0-21swapper/208:42:592
1906058993124,6cyclictest2003722-21kworker/u8:3+flush-179:012:15:211
1906058993123,6cyclictest510-21rs:main1
1906064993027,2cyclictest0-21swapper/309:55:013
1906064993027,2cyclictest0-21swapper/309:55:013
1906064993027,2cyclictest0-21swapper/308:41:003
1906064993025,4cyclictest0-21swapper/307:55:113
190606499300,29cyclictest0-21swapper/310:30:133
190606499300,28cyclictest0-21swapper/310:05:133
1906060993027,2cyclictest0-21swapper/210:50:142
1906060993027,2cyclictest0-21swapper/207:20:032
190606099300,28cyclictest0-21swapper/210:40:122
190606099300,28cyclictest0-21swapper/209:35:122
1906058993022,6cyclictest1929337-21/usr/sbin/munin08:20:231
1906064992927,1cyclictest0-21swapper/311:30:133
1906064992927,1cyclictest0-21swapper/309:43:593
1906064992927,1cyclictest0-21swapper/309:31:003
1906064992923,5cyclictest0-21swapper/310:15:033
1906064992922,5cyclictest2000491-21turbostat12:00:013
1906064992922,5cyclictest2000491-21turbostat12:00:003
190606499290,27cyclictest0-21swapper/312:10:133
190606499290,27cyclictest0-21swapper/311:20:133
1906060992926,2cyclictest0-21swapper/207:32:582
190606099290,27cyclictest0-21swapper/209:50:132
190606099290,27cyclictest0-21swapper/208:45:122
190606099290,27cyclictest0-21swapper/207:10:112
190606099290,1cyclictest0-21swapper/211:45:022
4577091280,7ptp4l441ktimers/310:55:003
4577091280,7ptp4l441ktimers/308:35:003
1906064992826,1cyclictest0-21swapper/311:10:113
1906064992825,2cyclictest0-21swapper/312:36:583
1906064992825,2cyclictest0-21swapper/308:55:133
1906064992822,5cyclictest0-21swapper/307:19:553
190606499280,2cyclictest0-21swapper/307:25:023
190606499280,27cyclictest0-21swapper/309:20:133
190606499280,26cyclictest0-21swapper/309:15:143
190606499280,21cyclictest0-21swapper/308:50:123
1906060992825,2cyclictest0-21swapper/212:28:592
1906060992825,2cyclictest0-21swapper/211:10:592
1906060992825,2cyclictest0-21swapper/210:35:592
1906060992825,2cyclictest0-21swapper/210:15:012
1906060992825,2cyclictest0-21swapper/209:40:132
1906060992825,2cyclictest0-21swapper/208:06:592
1906060992825,2cyclictest0-21swapper/207:25:112
190606099280,2cyclictest0-21swapper/211:25:132
190606099280,2cyclictest0-21swapper/211:00:592
190606099280,2cyclictest0-21swapper/210:00:022
190606099280,27cyclictest0-21swapper/209:25:112
190606099280,26cyclictest0-21swapper/211:15:122
190606099280,26cyclictest0-21swapper/210:45:142
190606099280,25cyclictest0-21swapper/209:49:592
4577091270,6ptp4l441ktimers/312:10:013
1906064992725,1cyclictest0-21swapper/309:10:123
1906064992725,1cyclictest0-21swapper/309:04:593
1906064992725,1cyclictest0-21swapper/308:24:563
190606499270,1cyclictest0-21swapper/312:30:133
190606499270,1cyclictest0-21swapper/309:25:113
1906060992725,1cyclictest0-21swapper/211:25:002
4577091260,6ptp4l61490irq/134-eno1-TxRx-012:30:013
4577091260,6ptp4l61490irq/134-eno1-TxRx-010:44:563
4577091260,6ptp4l441ktimers/310:49:563
4577091260,6ptp4l441ktimers/310:30:003
190606499260,24cyclictest0-21swapper/308:10:123
190606499260,1cyclictest0-21swapper/309:48:593
1906060992623,2cyclictest0-21swapper/212:04:592
1906060992623,2cyclictest0-21swapper/209:17:592
1906060992623,2cyclictest0-21swapper/209:04:002
1906060992623,2cyclictest0-21swapper/208:34:552
1906060992623,2cyclictest0-21swapper/208:23:592
190606099260,2cyclictest0-21swapper/212:13:592
190606099260,2cyclictest0-21swapper/207:41:592
190606099260,1cyclictest0-21swapper/208:57:592
4577091250,6ptp4l61490irq/134-eno1-TxRx-010:40:003
4577091250,5ptp4l61490irq/134-eno1-TxRx-009:10:013
4577091250,5ptp4l441ktimers/311:29:563
4577091250,5ptp4l441ktimers/311:19:553
1906064992523,1cyclictest0-21swapper/311:36:003
1906060992522,2cyclictest0-21swapper/212:39:582
1906060992522,2cyclictest0-21swapper/212:09:542
190606099250,2cyclictest0-21swapper/207:54:002
190606099250,24cyclictest0-21swapper/207:35:592
4577091240,4ptp4l441ktimers/307:44:553
1906064992422,1cyclictest0-21swapper/311:53:593
1906060992320,2cyclictest0-21swapper/212:21:592
1906064992218,2cyclictest0-21swapper/307:47:593
1906060992219,2cyclictest0-21swapper/209:33:592
1906060991815,2cyclictest0-21swapper/208:36:592
190605899181,13cyclictest1906061-21latency_hist07:10:011
1906060991613,2cyclictest0-21swapper/209:21:592
1906060991613,2cyclictest0-21swapper/207:16:002
1906060991512,2cyclictest0-21swapper/211:59:562
1906060991512,2cyclictest0-21swapper/211:59:562
19060609940,3cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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