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2026-09-14 - 17:37
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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 rackeslot6.osadl.org (updated Mon Sep 14, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
212399599144131,10cyclictest2210127-21kworker/u8:3+flush-179:011:45:000
212399699124113,7cyclictest2221271-21kworker/u8:3+flush-179:012:15:001
212399599117107,8cyclictest2205375-21latency_hist11:20:010
212399599117105,9cyclictest2156071-21latency_hist08:50:010
21239969911694,20cyclictest1213033-21systemd-journal09:10:001
212399599115109,4cyclictest2127114-21kworker/u8:0+flush-179:007:19:590
212399699114104,7cyclictest2206970-21latency_hist11:25:011
212399599114104,7cyclictest2177767-21/usr/sbin/munin09:55:250
212399599114100,11cyclictest2185507-21latency_hist10:20:020
21239969911284,24cyclictest2166385-21kworker/u8:2+flush-179:009:50:201
21239959911198,10cyclictest2202731-21diskstats11:10:140
212399599111105,4cyclictest2135179-21kworker/u8:3+flush-179:007:55:170
2123995991101,103cyclictest1-21systemd10:50:010
21239969910996,10cyclictest2140161-21apt-get08:00:121
212399599109103,4cyclictest2210127-21kworker/u8:3+flush-179:011:55:250
212399599109103,4cyclictest2210127-21kworker/u8:3+flush-179:011:55:250
21239969910798,6cyclictest2188972-21kworker/u8:3+flush-179:010:45:201
21239959910698,5cyclictest2210127-21kworker/u8:3+flush-179:011:35:230
21239969910595,7cyclictest2164518-21kworker/u8:1+flush-179:009:20:151
21239959910595,8cyclictest2221271-21kworker/u8:3+flush-179:012:30:200
21239959910496,5cyclictest2144708-21kworker/u8:2+flush-179:008:35:220
21239969910394,6cyclictest2144664-21latency_hist08:15:001
21239959910296,4cyclictest2208075-21kworker/u8:0+events_unbound12:10:010
21239959910294,5cyclictest2135179-21kworker/u8:3+events_unbound08:00:140
21239969910089,8cyclictest2183896-21latency_hist10:15:011
21239959910093,4cyclictest2144708-21kworker/u8:2+flush-179:008:15:220
2123996999887,8cyclictest2162699-21apt-get09:10:001
2123996999787,8cyclictest2133799-21apt-get07:40:111
2124000999588,5cyclictest2230839-21turbostat12:40:003
2123995999586,7cyclictest2127114-21kworker/u8:0+flush-179:007:30:200
2123995999488,4cyclictest2172556-21kworker/u8:0+flush-179:009:40:260
2123995999487,6cyclictest2205424-21kworker/u8:1+flush-179:011:30:200
2123995999486,6cyclictest2164518-21kworker/u8:1+flush-179:009:15:150
2123995999386,5cyclictest2229225-21kworker/u8:0+events_unbound12:40:010
2123995999285,5cyclictest2195289-21kworker/u8:2+flush-179:011:05:210
2123996999177,12cyclictest1213033-21systemd-journal09:35:001
2123996999082,5cyclictest2167715-21kworker/u8:3+flush-179:009:35:261
2123996999067,20cyclictest1213033-21systemd-journal10:29:561
2123995999082,5cyclictest2151012-21kworker/u8:1+flush-179:008:55:240
2123995999082,5cyclictest2151012-21kworker/u8:1+flush-179:008:55:240
2123996998979,8cyclictest2197878-21kworker/u8:0+flush-179:011:05:001
2123996998977,10cyclictest2174123-21kworker/u8:1+events_unbound10:00:011
2123995998982,5cyclictest2159775-21apt-get09:00:120
2123996998883,3cyclictest1489062-21kworker/u8:4+flush-179:007:15:171
2123995998878,8cyclictest2172515-21latency_hist09:40:010
2123996998776,8cyclictest2208075-21kworker/u8:0+flush-179:012:05:151
2123995998681,3cyclictest2188972-21kworker/u8:3+flush-179:010:35:250
2123995998678,5cyclictest2188972-21kworker/u8:3+flush-179:010:50:160
2123996998578,4cyclictest2177327-21kworker/u8:3+flush-179:010:05:201
2123996998574,8cyclictest2218369-21apt-get12:00:111
2123996998569,13cyclictest1213033-21systemd-journal07:33:371
2123996998474,7cyclictest2221271-21kworker/u8:3+flush-179:012:35:161
2123996998473,8cyclictest2195289-21kworker/u8:2+events_unbound10:50:131
2123996998372,8cyclictest2164518-21kworker/u8:1+events_unbound09:15:231
2123995998374,6cyclictest2140569-21kworker/u8:0+flush-179:008:05:220
2123996998270,10cyclictest2227911-21apt-get12:30:111
2123996998268,12cyclictest2135179-21kworker/u8:3+flush-179:007:50:011
2123995998074,3cyclictest1-21systemd08:55:000
2123996997970,6cyclictest2111435-21kworker/u8:1+events_unbound07:25:141
2123996997970,6cyclictest1489062-21kworker/u8:4+flush-179:007:20:181
2123996997871,5cyclictest2143079-21latency_hist08:10:021
2123996997770,5cyclictest2128771-21kworker/u8:2+flush-179:007:35:181
2123996997669,5cyclictest2182289-21kworker/u8:0+flush-179:010:35:001
2123996997668,5cyclictest2175686-21latency_hist09:50:001
2123996997668,5cyclictest2149684-21/usr/sbin/munin08:30:221
2123996997466,6cyclictest2188972-21kworker/u8:3+flush-179:010:40:221
2123996997466,5cyclictest2144708-21kworker/u8:2+events_unbound08:50:241
2123996997465,6cyclictest2195289-21kworker/u8:2+events_unbound11:10:021
2123996997465,6cyclictest2167715-21kworker/u8:3+flush-179:009:25:211
212399699740,72cyclictest1-21systemd09:01:371
2123995997469,4cyclictest2111435-21kworker/u8:1+events_unbound07:25:250
2123995997467,5cyclictest2182289-21kworker/u8:0+flush-179:010:30:240
2123995997466,6cyclictest2213388-21kworker/u8:1+events_unbound12:25:180
2123996997365,6cyclictest2224480-21latency_hist12:20:011
2123996997361,9cyclictest1213033-21systemd-journal08:40:021
2123995997366,5cyclictest2182289-21kworker/u8:0+flush-179:010:25:240
212399599730,71cyclictest1-21systemd10:25:000
2123996997263,6cyclictest2174101-21latency_hist09:45:011
2123995997265,5cyclictest2195289-21kworker/u8:2+flush-179:011:25:210
2123995997265,5cyclictest2174123-21kworker/u8:1+events_unbound09:50:240
2123995997264,6cyclictest2188972-21kworker/u8:3+events_unbound10:40:200
2123995997263,7cyclictest1213033-21systemd-journal12:15:000
2123995997164,5cyclictest2119391-21kworker/u8:0+events_unbound07:10:220
2123996997061,6cyclictest2151012-21kworker/u8:1+events_unbound08:35:151
2123996997060,7cyclictest2198758-21latency_hist11:00:011
2123996996964,4cyclictest2119391-21kworker/u8:0+events_unbound07:10:241
2123995996966,2cyclictest1489062-21kworker/u8:4+events_unbound07:20:230
2123995996963,4cyclictest2151012-21kworker/u8:1+flush-179:008:40:180
2123995996959,8cyclictest2213388-21kworker/u8:1+events_unbound12:00:180
2123996996858,8cyclictest2182289-21kworker/u8:0+events_unbound10:15:141
2123996996755,9cyclictest1213033-21systemd-journal11:35:181
2123995996761,4cyclictest2197878-21kworker/u8:0+flush-179:011:00:210
2123995996761,4cyclictest2160060-21kworker/u8:0+flush-179:009:10:150
2123995996760,6cyclictest2111435-21kworker/u8:1+flush-179:007:50:210
2123995996758,6cyclictest2221271-21kworker/u8:3+flush-179:012:20:200
2123996996664,1cyclictest0-21swapper/111:33:001
2123996996659,5cyclictest2221271-21kworker/u8:3+events_unbound12:20:241
2123996996656,7cyclictest2177327-21kworker/u8:3+flush-179:010:20:121
2123996996655,8cyclictest2144708-21kworker/u8:2+events_unbound08:25:221
2123995996661,4cyclictest2197878-21kworker/u8:0+flush-179:010:55:210
2123995996661,4cyclictest2177327-21kworker/u8:3+events_unbound10:05:250
2123995996659,5cyclictest2146510-21kworker/u8:0+events_unbound08:20:250
2123995996655,9cyclictest2161363-21apt-get09:05:120
2123996996555,7cyclictest2210127-21kworker/u8:3+events_unbound11:50:191
2123995996559,5cyclictest2210127-21kworker/u8:3+events_unbound11:50:230
2123995996559,4cyclictest2208075-21kworker/u8:0+flush-179:011:45:150
2123995996557,6cyclictest2166385-21kworker/u8:2+flush-179:010:00:150
2123995996556,7cyclictest2174123-21kworker/u8:1+flush-179:009:45:210
2123995996459,4cyclictest2128771-21kworker/u8:2+events_unbound07:35:260
2123995996456,7cyclictest2151012-21kworker/u8:1+flush-179:008:35:010
2123996996355,5cyclictest2154520-21kworker/u8:3+flush-179:008:55:141
2123996996355,5cyclictest2154520-21kworker/u8:3+flush-179:008:55:131
2123996996252,8cyclictest2210127-21kworker/u8:3+flush-179:011:40:221
2123996996153,6cyclictest2146266-21latency_hist08:20:011
2123995996153,6cyclictest2140569-21kworker/u8:0+flush-179:008:10:160
2123995996055,4cyclictest2195289-21kworker/u8:2+flush-179:011:20:220
2124000995957,1cyclictest0-21swapper/308:50:583
2123996995952,5cyclictest2221271-21kworker/u8:3+events_unbound12:25:141
2123999995855,2cyclictest0-21swapper/208:01:002
2123996995835,21cyclictest2213595-21apt-get11:45:101
2124000995648,6cyclictest2206983-21turbostat11:25:013
2123996995649,4cyclictest2210127-21kworker/u8:3+flush-179:011:55:161
2123996995649,4cyclictest2210127-21kworker/u8:3+flush-179:011:55:161
2124000995553,1cyclictest0-21swapper/309:43:003
2123996995548,5cyclictest2135179-21kworker/u8:3+flush-179:007:55:201
2123996995544,9cyclictest2111435-21kworker/u8:1+flush-179:007:55:001
2123995995552,2cyclictest2167715-21kworker/u8:3+events_unbound09:25:190
2124000995452,1cyclictest0-21swapper/309:17:593
2123995995449,4cyclictest2221271-21kworker/u8:3+events_unbound12:15:190
2123995995449,4cyclictest2167715-21kworker/u8:3+flush-179:009:30:210
2123996995347,4cyclictest2195289-21kworker/u8:2+events_unbound11:05:201
2123995995349,3cyclictest2164518-21kworker/u8:1+flush-179:009:20:260
2123999995249,2cyclictest0-21swapper/210:31:592
2123996995043,5cyclictest2188972-21kworker/u8:3+events_unbound10:35:171
2123996995042,6cyclictest1213033-21systemd-journal08:24:371
2123995995044,4cyclictest2128771-21kworker/u8:2+flush-179:007:40:170
4577091490,13ptp4l441ktimers/307:09:563
4577091490,13ptp4l441ktimers/307:09:563
2123996994941,6cyclictest2207225-21apt-get11:25:111
2124000994745,1cyclictest0-21swapper/308:36:583
2123995994643,2cyclictest2182289-21kworker/u8:0+events_unbound10:10:170
212400099430,42cyclictest0-21swapper/310:19:003
2123996994335,6cyclictest2203759-21kworker/u8:0+events_unbound11:15:161
212400099420,40cyclictest2190537-21turbostat10:35:013
212400099410,39cyclictest2167742-21turbostat09:24:593
2123999994138,2cyclictest0-21swapper/210:25:592
212400099400,5cyclictest2226079-21turbostat12:25:003
212400099400,38cyclictest2213360-21turbostat11:45:003
2123999994037,2cyclictest0-21swapper/211:48:592
2123995994035,4cyclictest2111435-21kworker/u8:1+flush-179:007:45:230
2123995994035,3cyclictest714-21Xorg08:27:000
212400099390,4cyclictest2172500-21turbostat09:40:003
212400099390,38cyclictest0-21swapper/312:18:593
2123996993934,4cyclictest2166385-21kworker/u8:2+flush-179:010:00:191
2123999993835,2cyclictest0-21swapper/208:53:592
2124000993734,2cyclictest0-21swapper/310:54:593
2124000993732,4cyclictest2147868-21turbostat08:24:593
2123999993734,2cyclictest0-21swapper/211:34:552
2123999993734,2cyclictest0-21swapper/210:36:002
2123999993734,2cyclictest0-21swapper/207:46:002
2123999993734,2cyclictest0-21swapper/207:21:582
212399999370,35cyclictest0-21swapper/211:36:592
212399999370,35cyclictest0-21swapper/207:11:592
212399999370,1cyclictest0-21swapper/208:15:002
2124000993634,1cyclictest0-21swapper/311:07:593
212400099360,35cyclictest0-21swapper/307:30:003
212400099360,2cyclictest0-21swapper/309:53:583
2123999993634,1cyclictest0-21swapper/211:30:002
2123999993634,1cyclictest0-21swapper/209:39:592
2123999993633,2cyclictest0-21swapper/212:03:592
212399999360,35cyclictest0-21swapper/208:18:592
212399999360,1cyclictest0-21swapper/212:30:592
212399999360,1cyclictest0-21swapper/209:29:542
212399999360,1cyclictest0-21swapper/207:30:592
212399999360,1cyclictest0-21swapper/207:18:592
2123995993627,7cyclictest2123913-21latency_hist07:10:020
2123995993627,7cyclictest2123913-21latency_hist07:10:020
2124000993533,1cyclictest0-21swapper/309:30:003
212400099350,1cyclictest0-21swapper/311:52:593
212400099350,1cyclictest0-21swapper/308:04:583
212400099350,1cyclictest0-21swapper/307:51:593
2123999993533,1cyclictest0-21swapper/211:09:592
2123999993532,2cyclictest0-21swapper/208:06:592
212399999350,1cyclictest0-21swapper/211:40:592
212399999350,1cyclictest0-21swapper/210:03:592
212399999350,1cyclictest0-21swapper/208:29:592
2123999993432,1cyclictest0-21swapper/209:00:002
2123999993432,1cyclictest0-21swapper/208:59:592
2123999993431,2cyclictest0-21swapper/212:28:582
2123999993431,2cyclictest0-21swapper/207:28:002
2124000993330,2cyclictest0-21swapper/308:58:003
2124000993330,2cyclictest0-21swapper/308:58:003
2123999993330,2cyclictest0-21swapper/212:36:592
2123999993330,2cyclictest0-21swapper/209:44:552
2123999993330,2cyclictest0-21swapper/209:31:002
2123999993330,2cyclictest0-21swapper/208:42:592
2123996993325,6cyclictest2123999-21cyclictest07:10:011
2123996993325,6cyclictest2123999-21cyclictest07:10:011
2124000993230,1cyclictest0-21swapper/311:32:593
2123996993227,4cyclictest2151012-21kworker/u8:1+flush-179:008:47:371
2124000993129,1cyclictest0-21swapper/308:48:593
2124000993128,2cyclictest0-21swapper/308:09:593
2124000993127,2cyclictest0-21swapper/311:10:023
2123999993128,2cyclictest0-21swapper/210:25:002
2123999993127,2cyclictest0-21swapper/210:17:592
4577091300,7ptp4l441ktimers/311:20:003
4577091300,6ptp4l441ktimers/309:35:003
4577091300,6ptp4l441ktimers/308:20:003
2123999993027,2cyclictest0-21swapper/212:12:592
2123999993027,2cyclictest0-21swapper/211:54:552
2123999993027,2cyclictest0-21swapper/211:10:132
2123999993027,2cyclictest0-21swapper/209:55:022
212399999300,2cyclictest0-21swapper/208:30:132
212399999300,28cyclictest0-21swapper/209:00:032
4577091290,7ptp4l441ktimers/308:35:013
4577091290,6ptp4l441ktimers/310:50:003
4577091290,6ptp4l441ktimers/310:00:013
2124000992926,2cyclictest0-21swapper/310:20:013
212400099290,28cyclictest0-21swapper/309:45:133
212400099290,27cyclictest0-21swapper/310:00:123
2123999992926,2cyclictest0-21swapper/212:05:122
2123999992926,2cyclictest0-21swapper/207:35:142
212399999290,27cyclictest0-21swapper/209:50:122
212399999290,27cyclictest0-21swapper/207:50:122
4577091280,7ptp4l61490irq/134-eno1-TxRx-011:50:003
4577091280,6ptp4l61490irq/134-eno1-TxRx-011:40:003
4577091280,6ptp4l441ktimers/312:00:013
4577091280,6ptp4l441ktimers/312:00:013
4577091280,6ptp4l441ktimers/308:45:003
4577091280,6ptp4l441ktimers/307:50:003
4577091280,6ptp4l441ktimers/307:45:013
4577091280,5ptp4l441ktimers/312:35:013
4577091280,5ptp4l441ktimers/310:40:003
2124000992826,1cyclictest0-21swapper/310:55:023
2124000992825,2cyclictest0-21swapper/311:25:123
2124000992825,2cyclictest0-21swapper/307:55:143
212400099280,27cyclictest0-21swapper/311:00:133
212400099280,26cyclictest0-21swapper/312:25:133
212400099280,26cyclictest0-21swapper/310:05:133
212400099280,26cyclictest0-21swapper/309:10:033
2123999992825,2cyclictest0-21swapper/211:55:132
2123999992825,2cyclictest0-21swapper/211:55:132
2123999992825,2cyclictest0-21swapper/209:20:132
2123999992825,2cyclictest0-21swapper/209:10:122
2123999992825,2cyclictest0-21swapper/209:05:132
2123999992825,2cyclictest0-21swapper/207:43:002
212399999280,2cyclictest0-21swapper/211:15:142
212399999280,2cyclictest0-21swapper/209:18:592
4577091270,6ptp4l61490irq/134-eno1-TxRx-007:14:553
4577091270,5ptp4l441ktimers/312:10:013
4577091270,5ptp4l441ktimers/309:10:003
4577091270,5ptp4l441ktimers/309:04:593
4577091270,5ptp4l441ktimers/308:14:563
4577091270,4ptp4l441ktimers/307:19:553
212400099270,26cyclictest0-21swapper/312:13:593
212400099270,26cyclictest0-21swapper/310:41:593
212400099270,26cyclictest0-21swapper/308:28:003
212400099270,1cyclictest0-21swapper/310:10:113
212400099270,1cyclictest0-21swapper/307:20:133
4577091260,5ptp4l61490irq/134-eno1-TxRx-012:05:013
4577091260,5ptp4l61490irq/134-eno1-TxRx-010:29:563
212400099260,2cyclictest0-21swapper/307:38:593
2123999992623,2cyclictest0-21swapper/208:47:002
2123999992522,2cyclictest0-21swapper/212:20:592
212399999250,2cyclictest0-21swapper/207:55:142
2123999992422,1cyclictest0-21swapper/210:54:542
2123999992422,1cyclictest0-21swapper/210:46:592
2123999992421,2cyclictest0-21swapper/210:10:592
2123999992320,2cyclictest0-21swapper/210:58:592
2123999992320,2cyclictest0-21swapper/210:40:592
2123999992320,2cyclictest0-21swapper/210:08:592
2123999992220,1cyclictest0-21swapper/212:19:592
2123999992220,1cyclictest0-21swapper/208:40:012
2123999991916,2cyclictest0-21swapper/211:02:592
4577091150,3ptp4l441ktimers/307:30:003
2123999991110,1cyclictest0-21swapper/208:25:002
21239999997,1cyclictest0-21swapper/211:20:132
21239999985,2cyclictest0-21swapper/209:48:002
21239999930,2cyclictest0-21swapper/207:10:012
21239999930,2cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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