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2026-06-04 - 23:31
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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 Thu Jun 04, 2026 12:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
218294199121110,8cyclictest2200365-21latency_hist08:05:011
218294199115105,7cyclictest2186021-21latency_hist07:20:001
218293999115107,6cyclictest2237902-21kworker/u8:0+flush-179:010:10:000
21829419910998,8cyclictest2197169-21latency_hist07:55:011
21829419910896,9cyclictest2213360-21/usr/sbin/munin08:45:001
21829399910897,8cyclictest2235625-21latency_hist09:55:020
218293999108100,5cyclictest2189177-21kworker/u8:3+flush-179:007:40:000
21829399910697,7cyclictest2211774-21latency_hist08:40:020
21829419910291,8cyclictest2278900-21kworker/u8:0+flush-179:012:20:011
2182939999875,5cyclictest2227675-21latency_hist09:30:010
2182939999690,4cyclictest2219701-21kworker/u8:2+flush-179:009:15:220
2182939999584,8cyclictest2187614-21latency_hist07:25:000
2182939999487,5cyclictest2271150-21kworker/u8:1+flush-179:012:00:010
218293999941,89cyclictest1-21systemd12:09:590
2182939999279,10cyclictest1213033-21systemd-journal09:50:000
2182941999080,7cyclictest2277280-21latency_hist12:05:001
2182941998963,23cyclictest2288698-21apt-get12:40:001
2182939998781,4cyclictest2250272-21kworker/u8:0+flush-179:011:10:230
2182939998679,5cyclictest2189177-21kworker/u8:3+events_unbound07:30:250
2182939998477,5cyclictest2278900-21kworker/u8:0+flush-179:012:15:220
2182939998378,4cyclictest2213594-21kworker/u8:0+flush-179:009:00:000
2182939998175,4cyclictest2201935-21kworker/u8:1+flush-179:008:30:140
2182939997968,8cyclictest2270915-21latency_hist11:45:010
2182939997872,4cyclictest2211820-21kworker/u8:3+flush-179:008:45:220
2182939997872,4cyclictest2211820-21kworker/u8:3+flush-179:008:45:210
2182939997872,4cyclictest2189177-21kworker/u8:3+flush-179:007:40:200
2182939997771,5cyclictest2271150-21kworker/u8:1+flush-179:011:45:180
2182939997771,4cyclictest2229250-21kworker/u8:3+events_unbound10:15:010
2182939997768,7cyclictest2245189-21latency_hist10:25:000
2182941997670,4cyclictest2250272-21kworker/u8:0+events_unbound11:00:001
2182941997668,6cyclictest2200905-21diskstats08:05:141
2182941997667,7cyclictest2183090-21apt-get07:10:121
2182941997667,7cyclictest2183090-21apt-get07:10:121
2182939997670,5cyclictest2219701-21kworker/u8:2+flush-179:009:30:240
2182939997670,5cyclictest2219701-21kworker/u8:2+flush-179:009:30:230
2182939997569,4cyclictest2189177-21kworker/u8:3+flush-179:008:00:160
2182941997467,5cyclictest2195823-21kworker/u8:2+flush-179:007:55:161
2182939997266,4cyclictest2229250-21kworker/u8:3+flush-179:010:00:230
2182941997160,9cyclictest2232708-21apt-get09:45:121
2182939997166,4cyclictest2163915-21kworker/u8:1+flush-179:007:19:550
2182939997062,6cyclictest2205133-21latency_hist08:20:010
2182941996953,14cyclictest2255643-21kworker/u8:1+events_unbound11:05:011
2182939996964,3cyclictest2256626-21kworker/u8:2+flush-179:011:05:230
2182939996863,3cyclictest2266108-21kworker/u8:0+flush-179:011:35:220
2182939996861,5cyclictest2219701-21kworker/u8:2+flush-179:009:14:280
2182939996857,8cyclictest1213033-21systemd-journal11:30:280
2182939996857,8cyclictest1213033-21systemd-journal11:30:270
2182944996764,2cyclictest0-21swapper/208:37:592
2182939996762,3cyclictest2283104-21kworker/u8:2+flush-179:012:20:220
2182939996759,4cyclictest2201987-21kworker/u8:3+flush-179:008:20:170
2182939996759,4cyclictest2201987-21kworker/u8:3+flush-179:008:20:170
2182941996657,6cyclictest2187591-21kworker/u8:0+events_unbound07:25:251
2182941996644,19cyclictest2254983-21latency_hist10:55:011
2182939996660,4cyclictest2282100-21kworker/u8:1+flush-179:012:25:190
2182939996660,4cyclictest2250272-21kworker/u8:0+events_unbound10:50:140
2182939996558,5cyclictest2271150-21kworker/u8:1+events_unbound12:10:160
2182941996458,4cyclictest2219701-21kworker/u8:2+flush-179:009:15:131
2182941996455,7cyclictest2264801-21apt-get11:25:101
2182941996453,8cyclictest2245198-21apt-get10:25:001
2182939996459,4cyclictest2271150-21kworker/u8:1+events_unbound11:55:000
2182939996455,7cyclictest2222927-21kworker/u8:1+events_unbound09:40:000
2182939996450,10cyclictest2201935-21kworker/u8:1+flush-179:008:15:000
218293999640,1cyclictest0-21swapper/009:41:590
2182941996340,21cyclictest2252049-21/usr/sbin/munin10:45:171
2182939996357,4cyclictest2261332-21kworker/u8:1+flush-179:011:20:210
2182939996357,4cyclictest2250272-21kworker/u8:0+events_unbound10:45:010
2182939996356,5cyclictest2200343-21kworker/u8:0+flush-179:008:05:160
2182941996252,6cyclictest2271150-21kworker/u8:1+flush-179:012:05:171
2182939996257,4cyclictest2189177-21kworker/u8:3+flush-179:007:59:550
2182941996157,3cyclictest2248606-21kworker/u8:3+events_unbound10:40:231
2182939996152,7cyclictest2184419-21latency_hist07:15:010
2182939996152,7cyclictest2184419-21latency_hist07:15:000
2182939996150,5cyclictest2250272-21kworker/u8:0+flush-179:010:45:220
2182941996049,9cyclictest2234294-21apt-get09:50:111
2182941996048,9cyclictest2221564-21apt-get09:10:111
2182939996055,4cyclictest2286480-21kworker/u8:0+flush-179:012:36:040
2182939996053,4cyclictest2229250-21kworker/u8:3+flush-179:009:55:250
2182941995953,4cyclictest2280449-21latency_hist12:15:011
2182941995843,8cyclictest2282100-21kworker/u8:1+flush-179:012:25:181
2182939995847,8cyclictest2243861-21kworker/u8:1+events_unbound10:30:140
2182946995753,2cyclictest0-21swapper/312:11:593
2182941995749,6cyclictest2262966-21latency_hist11:20:011
2182939995750,5cyclictest2250272-21kworker/u8:0+events_unbound10:55:140
2182941995648,5cyclictest2201987-21kworker/u8:3+events_unbound08:20:021
2182941995648,5cyclictest2201987-21kworker/u8:3+events_unbound08:20:021
2182941995647,6cyclictest2266108-21kworker/u8:0+flush-179:011:50:141
2182941995544,9cyclictest2242248-21apt-get10:15:111
2182939995549,4cyclictest2213594-21kworker/u8:0+flush-179:008:50:210
2182939995451,2cyclictest2237902-21kworker/u8:0+events_unbound10:25:190
2182939995444,8cyclictest2218392-21apt-get09:00:090
2182941995345,6cyclictest2194001-21latency_hist07:45:011
2182939995343,4cyclictest2248606-21kworker/u8:3+events_unbound10:40:010
2182941995245,5cyclictest2187591-21kworker/u8:0+flush-179:007:45:221
2182941995244,6cyclictest2229250-21kworker/u8:3+flush-179:010:05:001
2182941995244,6cyclictest2229250-21kworker/u8:3+flush-179:009:35:211
2182941995238,11cyclictest2205147-21apt-get08:20:011
2182939995246,5cyclictest2211820-21kworker/u8:3+events_unbound08:40:240
2182939995245,5cyclictest2255643-21kworker/u8:1+flush-179:011:00:230
2182939995144,5cyclictest2219701-21kworker/u8:2+events_unbound09:20:240
2182941995047,2cyclictest0-21swapper/108:37:591
2182941995045,4cyclictest2213594-21kworker/u8:0+flush-179:009:00:151
2182941995044,4cyclictest2219701-21kworker/u8:2+events_unbound09:25:191
2182939995047,2cyclictest2201935-21kworker/u8:1+flush-179:008:25:150
2182939995046,3cyclictest2261332-21kworker/u8:1+flush-179:011:25:190
2182939995036,11cyclictest1213033-21systemd-journal07:50:010
2182941994923,3cyclictest1-21systemd10:15:001
4577091480,13ptp4l441ktimers/307:10:013
2182941994840,6cyclictest2243861-21kworker/u8:1+events_unbound10:35:001
2182939994843,4cyclictest2189237-21systemd-run07:30:010
2182939994843,4cyclictest2189177-21kworker/u8:3+flush-179:007:50:240
2182941994740,6cyclictest2201935-21kworker/u8:1+flush-179:008:30:231
2182941994643,2cyclictest2201935-21kworker/u8:1+events_unbound08:25:211
2182941994640,4cyclictest2245334-21kworker/u8:2+flush-179:010:35:231
2182941994640,4cyclictest2219701-21kworker/u8:2+events_unbound09:30:181
2182941994640,4cyclictest2219701-21kworker/u8:2+events_unbound09:30:171
2182939994643,2cyclictest2237902-21kworker/u8:0+flush-179:010:15:140
2182939994634,9cyclictest2283104-21kworker/u8:2+flush-179:012:30:180
2182941994540,3cyclictest2237902-21kworker/u8:0+flush-179:010:25:151
2182941994539,5cyclictest2256626-21kworker/u8:2+flush-179:011:05:161
2182941994537,6cyclictest1213033-21systemd-journal08:10:181
2182941994534,9cyclictest2283655-21apt-get12:25:001
2182941994526,16cyclictest2216783-21apt-get08:55:111
218294199450,2cyclictest714-21Xorg11:35:591
2182939994541,3cyclictest2250272-21kworker/u8:0+events_unbound11:15:120
2182939994540,4cyclictest2218094-21kworker/u8:1+flush-179:009:05:160
2182939994540,4cyclictest2218094-21kworker/u8:1+flush-179:009:05:150
2182944994441,2cyclictest0-21swapper/207:57:592
2182941994438,5cyclictest2239078-21apt-get10:05:111
2182939994439,4cyclictest2271150-21kworker/u8:1+flush-179:012:04:560
218294499430,40cyclictest0-21swapper/212:29:562
2182941994338,4cyclictest2226126-21systemd-run09:25:001
2182941994337,4cyclictest2211820-21kworker/u8:3+events_unbound08:45:231
2182941994337,4cyclictest2211820-21kworker/u8:3+events_unbound08:45:221
2182941994333,7cyclictest2271150-21kworker/u8:1+flush-179:011:45:141
2182946994237,4cyclictest2194019-21turbostat07:44:593
2182941994237,4cyclictest2213594-21kworker/u8:0+flush-179:008:50:151
2182941994222,2cyclictest0-21swapper/107:39:591
2182941994220,3cyclictest321-21hwrng09:40:211
2182946994135,5cyclictest2248641-21turbostat10:35:003
218294699410,39cyclictest2234047-21turbostat09:50:003
218294699410,39cyclictest2211785-21turbostat08:40:013
218294699410,39cyclictest2205149-21turbostat08:20:003
2182946994034,5cyclictest2198787-21turbostat08:00:003
218294699400,4cyclictest2256600-21turbostat11:00:003
218294699400,39cyclictest2222907-21turbostat09:14:593
218294199400,36cyclictest2260018-21apt-get11:10:121
4577091390,3ptp4l441ktimers/310:45:133
2182946993934,4cyclictest2285507-21turbostat12:29:593
2182946993933,4cyclictest2266148-21turbostat11:30:013
2182946993835,2cyclictest0-21swapper/312:19:593
2182946993834,3cyclictest2203551-21turbostat08:15:003
2182944993835,2cyclictest0-21swapper/211:11:592
2182944993835,2cyclictest0-21swapper/209:39:592
218294199389,28cyclictest2189456-21apt-get07:30:131
218294699370,35cyclictest0-21swapper/310:06:593
218294499370,35cyclictest0-21swapper/212:34:582
218294199370,36cyclictest0-21swapper/111:43:591
218294199370,1cyclictest0-21swapper/107:22:001
2182946993634,1cyclictest0-21swapper/309:54:563
2182946993634,1cyclictest0-21swapper/308:50:003
2182946993634,1cyclictest0-21swapper/308:49:593
2182946993634,1cyclictest0-21swapper/308:41:583
2182946993629,5cyclictest2186018-21turbostat07:20:003
218294699360,35cyclictest0-21swapper/311:18:593
218294699360,1cyclictest0-21swapper/309:59:553
2182944993632,2cyclictest0-21swapper/208:41:592
218294499360,1cyclictest0-21swapper/210:57:592
2182941993633,2cyclictest0-21swapper/111:34:591
2182941993633,2cyclictest0-21swapper/111:34:581
218294199361,2cyclictest0-21swapper/111:56:591
2182946993533,1cyclictest0-21swapper/312:21:593
2182946993533,1cyclictest0-21swapper/312:08:583
2182946993533,1cyclictest0-21swapper/311:49:593
2182946993533,1cyclictest0-21swapper/309:31:593
2182946993533,1cyclictest0-21swapper/309:31:593
2182946993533,1cyclictest0-21swapper/308:32:593
2182946993532,2cyclictest0-21swapper/311:04:553
2182946993532,2cyclictest0-21swapper/308:29:583
2182941993528,6cyclictest2219701-21kworker/u8:2+flush-179:009:05:191
2182941993528,6cyclictest2219701-21kworker/u8:2+flush-179:009:05:191
2182946993432,1cyclictest0-21swapper/312:33:003
2182946993432,1cyclictest0-21swapper/311:31:003
2182946993432,1cyclictest0-21swapper/311:31:003
2182946993432,1cyclictest0-21swapper/309:42:593
2182946993432,1cyclictest0-21swapper/309:04:553
2182946993432,1cyclictest0-21swapper/307:53:003
2182946993328,4cyclictest2288677-21turbostat12:40:003
2182946993326,5cyclictest2251828-21turbostat10:45:013
2182944993330,2cyclictest0-21swapper/209:26:002
2182944993330,1cyclictest0-21swapper/210:30:002
2182941993326,5cyclictest2229250-21kworker/u8:3+flush-179:009:59:291
2182941993324,7cyclictest2283104-21kworker/u8:2+flush-179:012:35:001
2182946993230,1cyclictest0-21swapper/307:33:003
2182944993229,2cyclictest0-21swapper/211:28:582
218294499320,30cyclictest0-21swapper/210:42:592
2182946993129,1cyclictest0-21swapper/310:14:583
2182946993128,2cyclictest0-21swapper/310:17:593
2182946993126,4cyclictest2275691-21turbostat12:00:013
2182946993125,5cyclictest2230870-21turbostat09:40:003
2182946993124,5cyclictest2218131-21turbostat09:00:003
2182944993128,2cyclictest0-21swapper/209:17:592
2182946993028,1cyclictest0-21swapper/310:26:003
2182946993028,1cyclictest0-21swapper/309:17:593
2182944993027,2cyclictest0-21swapper/211:00:112
2182944993027,2cyclictest0-21swapper/210:01:592
2182944993027,2cyclictest0-21swapper/207:35:112
218294499300,28cyclictest0-21swapper/208:30:582
4577091290,7ptp4l441ktimers/311:15:003
2182946992926,2cyclictest0-21swapper/307:20:113
2182946992925,2cyclictest0-21swapper/309:21:003
218294699290,28cyclictest0-21swapper/312:00:133
218294699290,28cyclictest0-21swapper/307:25:133
2182944992926,2cyclictest0-21swapper/210:37:592
2182944992926,2cyclictest0-21swapper/210:10:122
2182944992926,2cyclictest0-21swapper/210:05:132
2182944992926,2cyclictest0-21swapper/208:20:142
2182944992926,2cyclictest0-21swapper/208:20:132
2182944992925,2cyclictest0-21swapper/208:20:012
218294499290,28cyclictest0-21swapper/212:15:122
218294499290,28cyclictest0-21swapper/210:20:122
218294499290,27cyclictest0-21swapper/212:05:132
218294499290,27cyclictest0-21swapper/211:55:122
218294499290,27cyclictest0-21swapper/210:50:132
218294499290,27cyclictest0-21swapper/210:15:122
218294499290,27cyclictest0-21swapper/209:30:122
218294499290,27cyclictest0-21swapper/209:30:122
218294499290,27cyclictest0-21swapper/207:30:132
218294499290,27cyclictest0-21swapper/207:10:132
218294499290,27cyclictest0-21swapper/207:10:122
2182941992924,4cyclictest2262993-21kworker/u8:2+flush-179:011:22:291
4577091280,7ptp4l61490irq/134-eno1-TxRx-008:10:013
4577091280,7ptp4l441ktimers/310:05:003
4577091280,6ptp4l441ktimers/310:25:003
4577091280,6ptp4l441ktimers/307:40:003
2182946992826,1cyclictest0-21swapper/309:10:003
2182946992826,1cyclictest0-21swapper/309:09:593
2182946992825,2cyclictest0-21swapper/308:50:133
218294699280,27cyclictest0-21swapper/311:40:143
218294699280,26cyclictest0-21swapper/311:50:123
218294699280,26cyclictest0-21swapper/310:35:123
218294699280,26cyclictest0-21swapper/308:20:023
218294699280,26cyclictest0-21swapper/308:20:023
2182944992825,2cyclictest0-21swapper/211:23:592
2182944992825,2cyclictest0-21swapper/211:15:112
2182944992825,2cyclictest0-21swapper/209:41:592
218294499280,2cyclictest0-21swapper/209:01:592
218294499280,27cyclictest0-21swapper/208:55:122
218294499280,26cyclictest0-21swapper/207:45:122
218294499280,26cyclictest0-21swapper/207:20:002
4577091270,6ptp4l441ktimers/310:55:003
4577091270,5ptp4l441ktimers/309:30:013
218294699270,26cyclictest0-21swapper/311:35:113
218294699270,1cyclictest0-21swapper/307:13:593
218294699270,1cyclictest0-21swapper/307:13:583
2182944992724,2cyclictest0-21swapper/209:50:592
2182944992724,2cyclictest0-21swapper/207:25:582
2182944992724,2cyclictest0-21swapper/207:23:002
218294499270,1cyclictest0-21swapper/208:00:142
4577091260,4ptp4l441ktimers/307:50:013
2182944992623,2cyclictest0-21swapper/212:02:002
218294499260,24cyclictest0-21swapper/210:48:592
4577091250,5ptp4l441ktimers/311:24:543
4577091250,5ptp4l441ktimers/311:09:563
2182946992523,1cyclictest0-21swapper/308:04:563
2182944992522,2cyclictest0-21swapper/209:45:592
2182944992522,2cyclictest0-21swapper/208:50:592
218294499250,2cyclictest0-21swapper/208:11:592
2182944992422,1cyclictest0-21swapper/208:49:592
2182944992422,1cyclictest0-21swapper/208:49:592
2182944992421,2cyclictest0-21swapper/207:40:592
2182944992320,2cyclictest0-21swapper/211:43:592
2182944992320,2cyclictest0-21swapper/211:30:142
2182944992320,2cyclictest0-21swapper/211:30:142
2182944992320,2cyclictest0-21swapper/209:08:002
2182944992320,2cyclictest0-21swapper/209:07:592
2182944992220,1cyclictest0-21swapper/211:45:132
2182944992119,1cyclictest0-21swapper/212:39:592
2182944992118,2cyclictest0-21swapper/211:08:592
2182944992017,2cyclictest0-21swapper/211:50:122
2182944992017,2cyclictest0-21swapper/211:37:592
218294199203,16cyclictest2182806-21latency_hist07:10:011
2182944991916,2cyclictest0-21swapper/210:31:592
2182944991916,2cyclictest0-21swapper/208:25:132
2182944991816,1cyclictest0-21swapper/208:09:582
231999170,9rtkit-daemon1139113-21packagekitd07:09:560
2182944991714,2cyclictest0-21swapper/207:54:592
2182944991613,2cyclictest0-21swapper/209:55:132
2182944991612,2cyclictest0-21swapper/209:14:542
2182944991512,2cyclictest0-21swapper/209:24:552
218294499118,2cyclictest2280469-21turbostat12:15:002
21829449974,2cyclictest0-21swapper/212:22:102
21829449941,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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