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2026-07-01 - 20:43
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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 Wed Jul 01, 2026 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
412008299142131,8cyclictest16042-21latency_hist11:50:010
412008399135125,8cyclictest4155030-21latency_hist09:00:011
412008299122116,4cyclictest4171255-21kworker/u8:3+events_unbound10:00:000
41200839912097,21cyclictest4155301-21apt-get09:00:121
412008399120110,7cyclictest4147307-21kworker/u8:4+flush-179:009:15:001
412008299119109,7cyclictest4189003-21latency_hist10:45:010
412008299118107,8cyclictest4193739-21kworker/u8:0+events_unbound12:05:240
412008299118107,8cyclictest4193739-21kworker/u8:0+events_unbound12:05:240
412008299114109,4cyclictest4147307-21kworker/u8:4+flush-179:008:55:280
41200829911297,11cyclictest4156631-21latency_hist09:05:010
412008299112102,7cyclictest4190588-21latency_hist10:50:000
412008299112100,9cyclictest4139111-21latency_hist08:10:000
41200829911195,12cyclictest510-21rs:main0
41200829910792,5cyclictest27437-21kworker/u8:1+events_unbound12:25:150
41200829910697,6cyclictest4103576-21kworker/u8:0+events_unbound07:20:210
41200829910599,4cyclictest4163267-21kworker/u8:1+flush-179:009:25:260
41200829910499,4cyclictest4189239-21kworker/u8:2+flush-179:011:10:240
41200839910293,6cyclictest4163298-21kworker/u8:2+flush-179:009:55:161
41200829910297,4cyclictest4163267-21kworker/u8:1+flush-179:009:45:230
41200829910291,8cyclictest4193739-21kworker/u8:0+flush-179:011:40:230
4120083999991,5cyclictest6499-21latency_hist11:20:021
4120082999993,4cyclictest4128466-21kworker/u8:0+flush-179:007:55:240
4120082999991,5cyclictest4193739-21kworker/u8:0+events_unbound12:00:190
4120082999990,6cyclictest4193739-21kworker/u8:0+events_unbound12:10:200
4120082999893,4cyclictest4163298-21kworker/u8:2+flush-179:009:40:240
4120082999793,3cyclictest4193739-21kworker/u8:0+events_unbound12:15:250
4120082999792,4cyclictest4140730-21kworker/u8:2+events_unbound08:20:250
4120082999792,3cyclictest4171255-21kworker/u8:3+flush-179:010:00:200
4120082999689,6cyclictest4147307-21kworker/u8:4+events_unbound09:05:020
4120082999590,4cyclictest4140730-21kworker/u8:2+flush-179:008:25:220
4120082999586,7cyclictest4103576-21kworker/u8:0+events_unbound07:20:010
4120082999582,10cyclictest4129559-21latency_hist07:40:020
4120082999582,10cyclictest4129559-21latency_hist07:40:010
4120083999383,8cyclictest26125-21apt-get12:20:111
4120083999379,10cyclictest1213033-21systemd-journal12:20:011
4120082999388,4cyclictest4163298-21kworker/u8:2+flush-179:010:10:240
4120083999283,6cyclictest4171255-21kworker/u8:3+flush-179:010:05:261
4120083999184,5cyclictest4193739-21kworker/u8:0+events_unbound11:20:231
4120083999184,5cyclictest4193739-21kworker/u8:0+events_unbound11:20:221
4120083999173,9cyclictest4184209-21kworker/u8:1+events_unbound10:30:011
4120082999182,6cyclictest4189239-21kworker/u8:2+events_unbound11:00:190
4120082999079,7cyclictest3040-21latency_hist11:10:010
4120083998979,8cyclictest4186063-21apt-get10:35:121
4120083998978,9cyclictest4139367-21apt-get08:10:121
4120082998883,4cyclictest4163298-21kworker/u8:2+events_unbound10:20:220
4120082998876,9cyclictest4140730-21kworker/u8:2+flush-179:008:45:210
4120082998782,4cyclictest9708-21kworker/u8:1+flush-179:011:50:230
4120082998780,5cyclictest4119950-21kworker/u8:2+flush-179:007:10:200
4120082998681,3cyclictest4140730-21kworker/u8:2+flush-179:008:50:220
4120082998580,3cyclictest4171255-21kworker/u8:3+flush-179:010:15:210
4120083998480,3cyclictest32200-21kworker/u8:0+events_unbound12:40:001
4120082998480,3cyclictest4124750-21kworker/u8:1+flush-179:007:30:240
4120082998474,8cyclictest4193779-21latency_hist11:00:020
4120082998474,8cyclictest4193779-21latency_hist11:00:020
4120082998378,4cyclictest27437-21kworker/u8:1+flush-179:012:35:260
4120082998377,5cyclictest4124750-21kworker/u8:1+flush-179:008:00:270
4120082998374,7cyclictest1213033-21systemd-journal07:30:000
4120083998273,6cyclictest4119950-21kworker/u8:2+flush-179:007:15:161
4120082998279,2cyclictest191rcuc/007:50:010
4120082998176,4cyclictest4163298-21kworker/u8:2+events_unbound09:50:220
4120082998175,4cyclictest4128466-21kworker/u8:0+events_unbound07:50:140
4120082998076,3cyclictest4157129-21kworker/u8:0+events_unbound09:15:250
4120082998074,4cyclictest4140730-21kworker/u8:2+flush-179:008:30:250
4120082997975,3cyclictest4140730-21kworker/u8:2+flush-179:008:15:240
4120083997767,8cyclictest16300-21apt-get11:50:101
4120082997772,3cyclictest4163267-21kworker/u8:1+flush-179:009:30:110
4120082997672,3cyclictest4159489-21kworker/u8:1+events_unbound09:10:250
4120082997671,4cyclictest4866-21kworker/u8:3+events_unbound11:25:220
4120082997667,3cyclictest4171255-21kworker/u8:3+events_unbound10:05:150
4120082997571,3cyclictest4182612-21kworker/u8:0+flush-179:010:25:280
4120083997460,11cyclictest510-21rs:main1
4120083997366,5cyclictest4128466-21kworker/u8:0+events_unbound07:40:241
4120083997365,6cyclictest4119950-21kworker/u8:2+flush-179:007:30:011
4120083997360,10cyclictest328-21diskstats11:00:151
4120082997369,3cyclictest4182612-21kworker/u8:0+events_unbound10:30:240
4120083997160,8cyclictest27437-21kworker/u8:1+flush-179:012:30:261
4120083997156,12cyclictest4140730-21kworker/u8:2+flush-179:008:25:151
4120082997163,6cyclictest4190603-21kworker/u8:3+events_unbound10:55:010
4120083997058,9cyclictest4124750-21kworker/u8:1+events_unbound07:55:001
4120083996963,3cyclictest4193739-21kworker/u8:0+events_unbound11:55:141
4120082996964,4cyclictest4163298-21kworker/u8:2+flush-179:009:35:260
4120082996955,11cyclictest1213033-21systemd-journal11:25:010
4120082996955,11cyclictest1213033-21systemd-journal11:25:010
4120089996860,6cyclictest17642-21turbostat11:55:003
4120083996859,6cyclictest18622-21kworker/u8:2+flush-179:012:05:141
4120083996859,6cyclictest18622-21kworker/u8:2+flush-179:012:05:131
4120083996858,8cyclictest11518-21apt-get11:35:101
4120082996863,4cyclictest4128466-21kworker/u8:0+flush-179:008:10:180
4120082996863,4cyclictest4128466-21kworker/u8:0+events_unbound07:40:250
4120082996855,5cyclictest4147307-21kworker/u8:4+events_unbound09:20:170
4120083996555,7cyclictest4161657-21latency_hist09:20:011
4120082996559,4cyclictest4184252-21kworker/u8:3+flush-179:010:35:190
4120083996461,2cyclictest4193794-21basename11:00:011
4120083996461,2cyclictest4193794-21basename11:00:001
4120083996457,5cyclictest4140730-21kworker/u8:2+flush-179:008:30:181
4120083996455,7cyclictest4172806-21latency_hist09:55:011
4120083996453,8cyclictest4124750-21kworker/u8:1+flush-179:007:35:011
412008399641,59cyclictest1-21systemd10:55:011
4120082996459,4cyclictest18622-21kworker/u8:2+flush-179:012:20:220
412008999630,1cyclictest0-21swapper/307:19:003
4120083996357,5cyclictest4193739-21kworker/u8:0+events_unbound12:10:251
4120082996356,5cyclictest29299-21apt-get12:30:110
4120083996255,5cyclictest4147307-21kworker/u8:4+flush-179:009:20:251
4120083996247,10cyclictest4124750-21kworker/u8:1+flush-179:008:00:151
4120082996054,5cyclictest9708-21kworker/u8:1+events_unbound11:36:120
4120082996044,5cyclictest4140730-21kworker/u8:2+events_unbound08:35:150
4120083995952,5cyclictest4163267-21kworker/u8:1+flush-179:009:35:001
4120083995948,8cyclictest4119950-21kworker/u8:2+flush-179:007:24:591
4120083995850,6cyclictest4140730-21kworker/u8:2+flush-179:008:40:001
4120083995746,7cyclictest4184209-21kworker/u8:1+flush-179:010:45:221
4120083995736,19cyclictest27437-21kworker/u8:1+flush-179:012:25:161
4120082995752,4cyclictest18622-21kworker/u8:2+flush-179:011:56:110
4120083995649,5cyclictest4163298-21kworker/u8:2+flush-179:010:10:201
4120083995443,8cyclictest1213033-21systemd-journal09:05:031
4120083995442,8cyclictest4182612-21kworker/u8:0+events_unbound10:40:231
4120082995447,5cyclictest5146-21apt-get11:15:110
4120083995348,3cyclictest4140730-21kworker/u8:2+flush-179:008:20:221
4120083995346,6cyclictest4193739-21kworker/u8:0+flush-179:012:00:231
4120083995342,8cyclictest4147307-21kworker/u8:4+flush-179:008:45:151
4120083995342,8cyclictest4140730-21kworker/u8:2+events_unbound08:15:141
4120083995248,3cyclictest4147307-21kworker/u8:4+flush-179:008:40:261
4120083995238,11cyclictest4180789-21latency_hist10:20:011
4120083995235,15cyclictest4189239-21kworker/u8:2+flush-179:011:08:411
4120083995228,21cyclictest1213033-21systemd-journal11:30:011
4120083995146,4cyclictest4163298-21kworker/u8:2+flush-179:009:35:241
4120083995043,5cyclictest4119950-21kworker/u8:2+flush-179:007:10:221
4120083994943,4cyclictest4147307-21kworker/u8:4+flush-179:009:25:171
4577091480,13ptp4l441ktimers/307:10:003
4120083994741,5cyclictest4182612-21kworker/u8:0+flush-179:010:30:231
4120083994739,6cyclictest4168304-21apt-get09:40:121
4120082994642,3cyclictest4147307-21kworker/u8:4+events_unbound08:40:120
4120083994534,8cyclictest4171255-21kworker/u8:3+flush-179:010:00:211
4120083994531,13cyclictest0-21swapper/111:13:581
412008399450,2cyclictest0-21swapper/111:45:141
4120083994217,4cyclictest0-21swapper/111:43:091
4120085994138,2cyclictest0-21swapper/208:32:592
412008999400,38cyclictest19240-21turbostat11:59:593
4120085994037,2cyclictest0-21swapper/209:52:592
4120085994035,4cyclictest0-21swapper/211:16:592
4120083994036,3cyclictest501-21systemd-logind08:10:001
4120083994033,5cyclictest4866-21kworker/u8:3+flush-179:011:25:211
412008999390,4cyclictest4148692-21turbostat08:40:013
4120085993935,2cyclictest0-21swapper/210:54:542
4120083993933,4cyclictest4124750-21kworker/u8:1+flush-179:007:45:221
412008399390,2cyclictest714-21Xorg09:49:591
4120085993832,5cyclictest0-21swapper/212:36:592
412008599380,36cyclictest0-21swapper/210:47:592
412008599380,36cyclictest0-21swapper/208:10:592
4120083993830,6cyclictest4128466-21kworker/u8:0+flush-179:007:35:221
4120083993830,6cyclictest4128466-21kworker/u8:0+flush-179:007:35:221
4120089993734,2cyclictest0-21swapper/309:25:593
412008999370,35cyclictest0-21swapper/308:21:003
4120085993734,2cyclictest0-21swapper/211:08:592
412008599370,35cyclictest0-21swapper/208:49:552
412008599370,35cyclictest0-21swapper/208:23:582
412008599370,2cyclictest0-21swapper/207:48:592
4120089993634,1cyclictest0-21swapper/312:24:553
4120089993634,1cyclictest0-21swapper/309:48:593
412008999360,35cyclictest0-21swapper/310:18:593
4120085993633,2cyclictest0-21swapper/210:15:592
4577091350,3ptp4l441ktimers/311:10:123
4120089993533,1cyclictest0-21swapper/311:24:003
4120089993533,1cyclictest0-21swapper/311:24:003
4120089993533,1cyclictest0-21swapper/310:59:563
4120089993533,1cyclictest0-21swapper/310:59:563
4120089993533,1cyclictest0-21swapper/309:54:553
4120089993533,1cyclictest0-21swapper/308:43:593
412008999350,34cyclictest0-21swapper/311:29:583
4120085993533,1cyclictest0-21swapper/207:14:592
4120085993532,2cyclictest0-21swapper/210:12:592
4120085993532,2cyclictest0-21swapper/207:51:002
412008599350,1cyclictest0-21swapper/212:26:002
412008599350,1cyclictest0-21swapper/208:08:592
4120089993432,1cyclictest0-21swapper/311:36:593
4120089993432,1cyclictest0-21swapper/310:21:593
4120089993432,1cyclictest0-21swapper/307:29:593
4120089993432,1cyclictest0-21swapper/307:21:593
4120089993431,2cyclictest0-21swapper/307:55:593
4120089993427,5cyclictest4177598-21turbostat10:10:003
4120085993427,5cyclictest0-21swapper/212:14:002
4120083993433,1cyclictest0-21swapper/108:53:581
4120089993328,4cyclictest4121569-21turbostat07:15:003
4577091320,5ptp4l61490irq/134-eno1-TxRx-008:30:003
4120089993230,1cyclictest0-21swapper/310:29:593
4120089993230,1cyclictest0-21swapper/308:34:593
4120085993230,1cyclictest0-21swapper/212:01:582
4120085993229,2cyclictest0-21swapper/209:21:592
4120085993229,2cyclictest0-21swapper/209:13:592
4120085993228,2cyclictest0-21swapper/210:57:002
4120085993228,2cyclictest0-21swapper/210:57:002
4120085993225,6cyclictest0-21swapper/209:05:012
4120089993129,1cyclictest0-21swapper/309:39:553
4120085993125,5cyclictest0-21swapper/211:50:122
4120085993125,5cyclictest0-21swapper/210:20:032
4120085993124,6cyclictest0-21swapper/211:45:132
4120085993124,6cyclictest0-21swapper/209:05:012
4577091300,7ptp4l441ktimers/311:05:003
4120089993024,5cyclictest4190594-21turbostat10:49:593
412008999300,28cyclictest0-21swapper/312:10:123
412008999300,28cyclictest0-21swapper/310:40:113
4120085993027,2cyclictest0-21swapper/210:41:002
4120089992926,2cyclictest0-21swapper/311:40:113
4120089992926,2cyclictest0-21swapper/310:10:133
412008999290,28cyclictest0-21swapper/309:05:033
412008999290,27cyclictest0-21swapper/308:15:113
412008999290,27cyclictest0-21swapper/308:00:143
4120085992926,2cyclictest0-21swapper/209:48:592
4120085992926,2cyclictest0-21swapper/207:30:112
4120085992926,2cyclictest0-21swapper/207:25:152
4120085992926,2cyclictest0-21swapper/207:20:132
4120085992921,7cyclictest0-21swapper/209:40:592
412008599290,2cyclictest0-21swapper/209:35:122
412008599290,28cyclictest0-21swapper/211:25:122
412008599290,27cyclictest0-21swapper/211:30:112
412008599290,27cyclictest0-21swapper/211:04:592
412008599290,27cyclictest0-21swapper/208:55:152
412008599290,27cyclictest0-21swapper/207:40:132
412008599290,21cyclictest0-21swapper/209:55:122
4120083992915,12cyclictest281ktimers/107:55:131
4577091280,6ptp4l441ktimers/312:20:003
4577091280,6ptp4l441ktimers/309:15:003
4577091280,6ptp4l441ktimers/308:10:003
4577091280,5ptp4l441ktimers/309:35:003
4120089992826,1cyclictest0-21swapper/310:37:593
4120089992825,2cyclictest0-21swapper/311:46:593
412008999281,1cyclictest67-21kworker/3:1+events12:05:133
412008999281,1cyclictest67-21kworker/3:1+events12:05:133
412008999280,2cyclictest0-21swapper/309:40:133
412008999280,26cyclictest0-21swapper/307:35:153
412008999280,26cyclictest0-21swapper/307:35:143
4120085992825,2cyclictest0-21swapper/210:00:122
4120085992825,2cyclictest0-21swapper/207:17:592
412008599280,2cyclictest0-21swapper/211:10:012
412008599280,2cyclictest0-21swapper/210:30:142
412008599280,27cyclictest0-21swapper/210:25:142
412008599280,26cyclictest0-21swapper/207:57:592
4577091270,6ptp4l61490irq/134-eno1-TxRx-011:35:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-007:50:013
4120089992725,1cyclictest0-21swapper/312:35:593
4120089992725,1cyclictest0-21swapper/310:52:593
4120089992725,1cyclictest0-21swapper/309:20:593
412008999270,2cyclictest0-21swapper/308:56:593
412008999270,1cyclictest0-21swapper/312:04:583
4120085992724,2cyclictest0-21swapper/208:16:592
4120085992719,7cyclictest0-21swapper/208:36:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-010:04:553
4577091260,6ptp4l61490irq/134-eno1-TxRx-008:50:003
4577091260,6ptp4l441ktimers/307:54:553
4577091260,5ptp4l61490irq/134-eno1-TxRx-008:15:003
4577091260,5ptp4l441ktimers/312:35:003
4577091260,4ptp4l441ktimers/307:35:003
4120089992624,1cyclictest0-21swapper/311:10:003
4120085992624,1cyclictest0-21swapper/212:19:592
4120085992623,2cyclictest0-21swapper/208:27:002
412008599260,2cyclictest0-21swapper/209:35:002
412008599260,24cyclictest0-21swapper/211:59:592
4577091250,6ptp4l61490irq/134-eno1-TxRx-007:45:003
4577091250,5ptp4l441ktimers/310:35:003
4577091250,5ptp4l441ktimers/309:19:553
4577091250,5ptp4l441ktimers/308:54:563
4120089992523,1cyclictest0-21swapper/312:25:593
4120085992523,1cyclictest0-21swapper/211:40:002
4120085992523,1cyclictest0-21swapper/207:39:592
4120085992523,1cyclictest0-21swapper/207:39:582
4120085992522,2cyclictest0-21swapper/211:43:592
4120085992518,6cyclictest0-21swapper/209:26:592
4120082992521,3cyclictest0-21swapper/007:10:010
4577091240,4ptp4l61490irq/134-eno1-TxRx-009:59:563
4577091240,4ptp4l61490irq/134-eno1-TxRx-009:04:553
4120089992422,1cyclictest0-21swapper/311:16:583
4120085992421,2cyclictest0-21swapper/208:53:582
4120085992220,1cyclictest0-21swapper/212:35:002
4120085992220,1cyclictest0-21swapper/212:08:002
4120085992220,1cyclictest0-21swapper/212:07:592
4120085992220,1cyclictest0-21swapper/209:15:142
4120085992219,2cyclictest0-21swapper/210:38:592
4120085992219,2cyclictest0-21swapper/210:05:592
4120083992217,4cyclictest0-21swapper/107:10:011
4120085992012,6cyclictest0-21swapper/208:41:002
4120085991815,2cyclictest0-21swapper/208:02:592
4120085991311,1cyclictest0-21swapper/212:25:002
412008599130,10cyclictest0-21swapper/211:24:562
412008599130,10cyclictest0-21swapper/211:24:552
41200859970,1cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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