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2026-01-10 - 06:58
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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 Sat Jan 10, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7350929910696,6cyclictest751167-21latency_hist20:00:011
7350889910192,6cyclictest823546-21latency_hist23:45:010
7350889910192,6cyclictest823546-21latency_hist23:45:000
735088999488,5cyclictest752998-21kworker/u8:1+events_unbound21:00:000
735092999383,8cyclictest831550-21latency_hist00:10:011
735088998982,6cyclictest786403-21kworker/u8:1+events_unbound22:10:020
735088998577,6cyclictest825165-21kworker/u8:3+flush-179:000:20:010
735092998375,6cyclictest821951-21latency_hist23:40:021
735092998350,32cyclictest0-21swapper/121:27:591
735092998175,4cyclictest752746-21kworker/u8:0+flush-179:020:05:241
735088998177,2cyclictest1-21systemd19:15:000
735088998174,4cyclictest799708-21kworker/u8:2+events_unbound22:35:230
735088998171,7cyclictest781649-21latency_hist21:35:010
735088998075,3cyclictest786403-21kworker/u8:1+flush-179:021:50:200
735088997974,3cyclictest824279-21kworker/u8:2+flush-179:023:50:190
735092997762,5cyclictest737651-21kworker/u8:1+events_unbound19:25:021
735088997671,4cyclictest825165-21kworker/u8:3+events_unbound00:15:230
735088997670,5cyclictest802902-21kworker/u8:1+events_unbound23:15:240
735088997668,6cyclictest767075-21latency_hist20:50:010
735092997565,7cyclictest817181-21latency_hist23:25:001
735088997568,5cyclictest802902-21kworker/u8:1+events_unbound23:05:210
735088997468,4cyclictest825165-21kworker/u8:3+events_unbound00:35:130
735092997365,6cyclictest741662-21kworker/u8:2+flush-179:020:00:241
735088997363,4cyclictest741662-21kworker/u8:2+events_unbound19:40:220
735088997263,7cyclictest806273-21/usr/sbin/munin22:50:230
735088997164,6cyclictest812445-21kworker/u8:0+flush-179:023:30:000
735088997164,5cyclictest791236-21kworker/u8:3+events_unbound22:30:180
735088997164,5cyclictest783492-21kworker/u8:0+flush-179:021:40:230
735088997164,5cyclictest737651-21kworker/u8:1+events_unbound19:20:030
735092997065,4cyclictest740562-21kworker/u8:0+flush-179:019:34:551
735092997064,5cyclictest799708-21kworker/u8:2+flush-179:023:15:001
735092997064,5cyclictest787987-21kworker/u8:0+flush-179:021:59:551
735092997064,4cyclictest791236-21kworker/u8:3+flush-179:022:15:011
735088997063,6cyclictest779544-21kworker/u8:3+flush-179:021:50:000
735092996961,6cyclictest740562-21kworker/u8:0+flush-179:019:40:001
735092996960,7cyclictest740268-21/usr/sbin/munin19:25:241
735088996960,7cyclictest796456-21kworker/u8:0+flush-179:022:25:200
735092996862,4cyclictest799708-21kworker/u8:2+flush-179:023:00:011
735092996862,4cyclictest787987-21kworker/u8:0+events_unbound22:05:241
735088996860,6cyclictest792790-21latency_hist22:10:000
735092996761,4cyclictest744812-21kworker/u8:1+flush-179:019:50:011
735092996757,8cyclictest838180-21latency_hist00:30:021
735088996763,3cyclictest737651-21kworker/u8:1+events_unbound19:20:010
735088996761,4cyclictest799708-21kworker/u8:2+flush-179:023:05:010
735088996761,4cyclictest762165-21kworker/u8:0+flush-179:020:35:210
735092996662,3cyclictest799708-21kworker/u8:2+events_unbound22:40:191
735092996559,5cyclictest762165-21kworker/u8:0+events_unbound20:55:001
735092996558,5cyclictest762165-21kworker/u8:0+flush-179:020:40:011
735092996556,6cyclictest788012-21latency_hist21:55:021
735092996358,4cyclictest735005-21kworker/u8:0+flush-179:019:15:001
735088996356,5cyclictest796456-21kworker/u8:0+events_unbound22:40:210
735088996356,5cyclictest752998-21kworker/u8:1+flush-179:021:05:200
735088996356,5cyclictest752998-21kworker/u8:1+flush-179:021:05:200
735088996355,6cyclictest824279-21kworker/u8:2+flush-179:023:55:200
735088996354,7cyclictest787987-21kworker/u8:0+flush-179:021:55:200
735088996257,4cyclictest825165-21kworker/u8:3+events_unbound00:30:250
735088996257,4cyclictest825165-21kworker/u8:3+events_unbound00:30:240
735088996250,7cyclictest775257-21kworker/u8:2+events_unbound21:20:180
4577091620,16ptp4l441ktimers/319:05:513
735092996153,6cyclictest825130-21latency_hist23:50:011
735092996150,9cyclictest828329-40mandb00:00:011
735092996149,11cyclictest825165-21kworker/u8:3+flush-179:000:39:551
735088996155,5cyclictest791236-21kworker/u8:3+events_unbound22:15:030
735092996055,4cyclictest775257-21kworker/u8:2+flush-179:021:19:551
735092996049,9cyclictest804708-21apt-get22:45:111
735088996054,4cyclictest786403-21kworker/u8:1+events_unbound22:00:200
735088996054,4cyclictest752998-21kworker/u8:1+events_unbound20:15:190
735088996054,4cyclictest752998-21kworker/u8:1+events_unbound20:15:190
735088996053,5cyclictest741662-21kworker/u8:2+events_unbound19:40:000
735092995953,4cyclictest752998-21kworker/u8:1+events_unbound20:20:011
735092995953,4cyclictest752998-21kworker/u8:1+events_unbound20:20:001
735092995951,6cyclictest834146-21kworker/u8:0+flush-179:000:20:001
735088995951,6cyclictest820610-21apt-get23:35:090
735092995853,4cyclictest799708-21kworker/u8:2+flush-179:022:35:171
735092995849,7cyclictest795435-21diskstats22:15:131
735088995752,4cyclictest752746-21kworker/u8:0+events_unbound20:10:010
735092995644,10cyclictest799708-21kworker/u8:2+flush-179:022:34:551
735088995650,5cyclictest741662-21kworker/u8:2+flush-179:020:15:010
735088995650,4cyclictest796456-21kworker/u8:0+events_unbound22:45:150
735092995551,3cyclictest818813-21kworker/u8:3+flush-179:023:34:551
735092995551,3cyclictest762165-21kworker/u8:0+events_unbound21:25:001
735092995545,7cyclictest833139-21latency_hist00:15:011
735088995549,5cyclictest775257-21kworker/u8:2+events_unbound21:25:020
735088995452,1cyclictest0-21swapper/020:24:590
735088995446,6cyclictest812445-21kworker/u8:0+flush-179:023:30:210
735092995348,4cyclictest779544-21kworker/u8:3+flush-179:021:39:551
735088995347,5cyclictest812445-21kworker/u8:0+events_unbound23:45:190
735088995345,6cyclictest748217-21kworker/u8:3+flush-179:019:50:180
735092995247,4cyclictest802902-21kworker/u8:1+flush-179:023:15:231
735092995246,5cyclictest752998-21kworker/u8:1+flush-179:020:59:551
735088995242,8cyclictest767329-21apt-get20:50:110
735092995145,4cyclictest759100-21kworker/u8:2+events_unbound20:25:201
735088995145,5cyclictest786403-21kworker/u8:1+events_unbound22:20:180
735088995145,5cyclictest786403-21kworker/u8:1+events_unbound22:20:180
735088995143,6cyclictest812445-21kworker/u8:0+events_unbound23:20:180
735088995044,5cyclictest812445-21kworker/u8:0+flush-179:023:10:200
735088995043,4cyclictest776617-21latency_hist21:20:010
735092994944,4cyclictest820591-21kworker/u8:1+flush-179:023:54:551
735092994944,4cyclictest759100-21kworker/u8:2+flush-179:020:30:231
735092994943,5cyclictest796456-21kworker/u8:0+events_unbound22:20:231
735092994943,5cyclictest796456-21kworker/u8:0+events_unbound22:20:231
735092994943,4cyclictest752998-21kworker/u8:1+flush-179:021:05:151
735092994943,4cyclictest752998-21kworker/u8:1+flush-179:021:05:151
73508899490,48cyclictest1-21systemd21:05:010
735092994843,4cyclictest799708-21kworker/u8:2+flush-179:022:54:551
735092994843,3cyclictest752998-21kworker/u8:1+events_unbound20:15:011
735092994842,5cyclictest762165-21kworker/u8:0+events_unbound21:10:151
735092994842,4cyclictest820591-21kworker/u8:1+events_unbound23:40:221
735092994842,4cyclictest820591-21kworker/u8:1+events_unbound23:40:221
735092994841,6cyclictest802902-21kworker/u8:1+flush-179:023:05:201
735088994844,3cyclictest838217-21systemd-run00:30:010
735088994841,6cyclictest744812-21kworker/u8:1+events_unbound19:45:190
735092994742,4cyclictest796456-21kworker/u8:0+flush-179:022:29:541
735092994741,4cyclictest828578-21kworker/u8:4+flush-179:000:00:151
735092994641,4cyclictest741662-21kworker/u8:2+events_unbound19:40:181
735092994640,4cyclictest783492-21kworker/u8:0+events_unbound21:40:211
73508899460,45cyclictest211irq_work/020:44:590
735088994540,4cyclictest740562-21kworker/u8:0+events_unbound19:30:240
735088994540,4cyclictest737651-21kworker/u8:1+events_unbound19:25:160
735088994539,4cyclictest759100-21kworker/u8:2+events_unbound20:30:140
73508899450,43cyclictest714-21Xorg19:56:590
735088994439,4cyclictest820591-21kworker/u8:1+flush-179:000:00:240
735088994439,4cyclictest762165-21kworker/u8:0+events_unbound21:10:200
735095994338,4cyclictest831557-21turbostat00:10:003
73509599430,35cyclictest0-21swapper/321:57:593
73509599430,35cyclictest0-21swapper/321:04:553
735095994134,6cyclictest0-21swapper/322:53:593
735095994134,6cyclictest0-21swapper/321:39:003
735095994133,7cyclictest0-21swapper/322:50:003
73509599410,39cyclictest810826-21turbostat23:05:013
735092994136,4cyclictest812445-21kworker/u8:0+flush-179:023:25:251
735092994136,4cyclictest748217-21kworker/u8:3+flush-179:019:54:561
735092994135,4cyclictest738167-21cron19:20:001
73509599400,38cyclictest747989-21turbostat19:50:023
73509599400,38cyclictest741628-21turbostat19:30:003
735093994034,5cyclictest0-21swapper/200:39:592
735092994034,4cyclictest752998-21kworker/u8:1+events_unbound21:00:231
73508899400,3cyclictest809212-21latency_hist22:59:590
735095993933,4cyclictest752769-21turbostat20:05:003
735095993932,6cyclictest751193-21turbostat20:00:003
73509599390,4cyclictest826723-21turbostat23:55:003
73509599390,37cyclictest818783-21turbostat23:30:013
73509599390,37cyclictest746404-21turbostat19:45:003
73509599390,37cyclictest743214-21turbostat19:35:003
735088993934,4cyclictest825165-21kworker/u8:3+flush-179:000:05:240
735095993835,2cyclictest0-21swapper/319:21:593
735095993833,4cyclictest799692-21turbostat22:30:003
735093993835,2cyclictest0-21swapper/222:55:592
73509399380,36cyclictest0-21swapper/220:37:592
73509399380,36cyclictest0-21swapper/200:31:592
73509399380,36cyclictest0-21swapper/200:31:592
735092993835,2cyclictest714-21Xorg21:45:591
735092993834,3cyclictest825165-21kworker/u8:3+events_unbound00:20:201
735092993834,3cyclictest759130-21munin-run20:25:001
735092993833,4cyclictest825165-21kworker/u8:3+flush-179:000:30:111
735092993833,4cyclictest825165-21kworker/u8:3+flush-179:000:30:111
735088993834,2cyclictest783257-21munin-run21:40:000
735095993735,1cyclictest0-21swapper/320:38:593
735095993731,5cyclictest0-21swapper/322:13:593
73509599370,36cyclictest0-21swapper/322:40:583
735093993734,2cyclictest0-21swapper/221:38:002
735093993734,2cyclictest0-21swapper/219:29:552
735093993732,4cyclictest0-21swapper/221:29:562
73509399370,35cyclictest0-21swapper/221:47:592
73509399370,35cyclictest0-21swapper/221:03:582
73509399370,35cyclictest0-21swapper/219:49:592
73509299370,36cyclictest0-21swapper/122:02:591
735088993732,4cyclictest759100-21kworker/u8:2+events_unbound20:25:240
735095993634,1cyclictest0-21swapper/321:25:003
735095993634,1cyclictest0-21swapper/320:33:593
73509599360,35cyclictest0-21swapper/323:59:003
73509599360,35cyclictest0-21swapper/320:18:593
73509599360,35cyclictest0-21swapper/320:18:593
73509599360,35cyclictest0-21swapper/300:29:593
735093993634,1cyclictest0-21swapper/221:25:002
735093993633,2cyclictest0-21swapper/221:52:592
735093993633,2cyclictest0-21swapper/220:41:002
735093993633,2cyclictest0-21swapper/219:57:592
735092993633,2cyclictest810819-21munin-run23:05:011
735092993633,2cyclictest714-21Xorg21:34:591
735095993533,1cyclictest0-21swapper/320:42:003
735095993533,1cyclictest0-21swapper/320:08:593
73509599350,34cyclictest0-21swapper/321:19:593
73509599350,1cyclictest0-21swapper/322:20:593
73509599350,1cyclictest0-21swapper/322:20:593
735093993532,2cyclictest0-21swapper/219:32:592
735092993529,5cyclictest752998-21kworker/u8:1+events_unbound20:40:131
735095993432,1cyclictest0-21swapper/319:54:563
735095993432,1cyclictest0-21swapper/300:20:593
735092993428,5cyclictest766616-21proc_pri20:45:231
735088993431,2cyclictest191rcuc/020:01:590
735095993331,1cyclictest0-21swapper/322:37:593
735095993331,1cyclictest0-21swapper/300:19:553
735095993326,6cyclictest0-21swapper/300:35:593
735093993330,2cyclictest0-21swapper/220:27:002
73509399330,31cyclictest0-21swapper/221:55:592
735088993328,4cyclictest714-21Xorg00:12:000
735095993227,5cyclictest0-21swapper/320:55:123
735093993230,1cyclictest0-21swapper/223:10:002
735093993230,1cyclictest0-21swapper/221:19:592
735093993229,2cyclictest0-21swapper/223:29:552
73509399320,30cyclictest0-21swapper/222:15:122
735095993128,2cyclictest0-21swapper/322:16:593
73509599310,30cyclictest0-21swapper/300:34:593
73509599310,30cyclictest0-21swapper/300:34:593
735093993123,7cyclictest0-21swapper/222:05:002
4577091310,7ptp4l441ktimers/322:35:013
735095993027,2cyclictest0-21swapper/323:23:593
735095993024,5cyclictest0-21swapper/319:15:113
735093993028,1cyclictest0-21swapper/223:15:002
735093993028,1cyclictest0-21swapper/220:10:002
735093993027,2cyclictest0-21swapper/219:39:552
735093993025,4cyclictest0-21swapper/223:00:132
735093993024,5cyclictest0-21swapper/219:15:112
4577091300,7ptp4l441ktimers/321:35:003
4577091300,7ptp4l441ktimers/320:15:013
4577091300,7ptp4l441ktimers/319:40:003
735095992927,1cyclictest0-21swapper/323:40:593
735095992927,1cyclictest0-21swapper/323:40:583
735095992926,2cyclictest0-21swapper/321:45:103
735095992921,7cyclictest0-21swapper/323:06:003
73509599290,27cyclictest0-21swapper/323:45:123
73509599290,1cyclictest0-21swapper/322:05:123
735093992927,1cyclictest0-21swapper/223:19:592
735093992927,1cyclictest0-21swapper/200:25:112
735093992926,2cyclictest0-21swapper/223:45:122
735093992926,2cyclictest0-21swapper/222:05:122
735093992926,2cyclictest0-21swapper/200:20:132
735093992926,2cyclictest0-21swapper/200:02:002
735093992923,5cyclictest0-21swapper/222:22:002
735093992923,5cyclictest0-21swapper/222:21:592
73509399290,28cyclictest0-21swapper/219:20:112
73509399290,27cyclictest0-21swapper/200:00:012
73509399290,21cyclictest0-21swapper/222:10:112
73509399290,1cyclictest0-21swapper/200:20:012
4577091290,7ptp4l61490irq/134-eno1-TxRx-000:05:013
4577091290,6ptp4l441ktimers/323:35:003
4577091290,6ptp4l441ktimers/322:04:593
735095992825,2cyclictest0-21swapper/321:40:123
735095992825,2cyclictest0-21swapper/321:25:013
73509599280,21cyclictest0-21swapper/320:50:123
735093992825,2cyclictest0-21swapper/222:40:122
735093992825,2cyclictest0-21swapper/222:35:142
735093992825,2cyclictest0-21swapper/220:58:592
735093992825,2cyclictest0-21swapper/220:50:122
4577091280,6ptp4l61490irq/134-eno1-TxRx-020:50:003
4577091280,6ptp4l61490irq/134-eno1-TxRx-019:15:003
4577091280,6ptp4l441ktimers/323:15:013
4577091280,6ptp4l441ktimers/321:14:593
73509599270,26cyclictest0-21swapper/320:27:593
735093992725,1cyclictest0-21swapper/221:34:592
735093992724,2cyclictest0-21swapper/223:44:002
735093992724,2cyclictest0-21swapper/223:43:592
735093992724,2cyclictest0-21swapper/222:50:132
735093992724,2cyclictest0-21swapper/222:48:592
73509399270,25cyclictest0-21swapper/220:17:592
73509399270,25cyclictest0-21swapper/220:17:592
4577091270,6ptp4l61490irq/134-eno1-TxRx-020:25:013
4577091270,5ptp4l61490irq/134-eno1-TxRx-021:09:563
4577091270,5ptp4l61490irq/134-eno1-TxRx-021:09:563
4577091270,5ptp4l441ktimers/322:59:553
735093992623,2cyclictest0-21swapper/200:08:582
73509399260,2cyclictest0-21swapper/222:30:592
73509399260,24cyclictest0-21swapper/222:27:582
4577091260,6ptp4l61490irq/134-eno1-TxRx-023:20:003
4577091260,5ptp4l61490irq/134-eno1-TxRx-023:40:003
735093992523,1cyclictest0-21swapper/223:55:002
735093992523,1cyclictest0-21swapper/220:25:002
735093992522,2cyclictest0-21swapper/223:36:592
735093992522,2cyclictest0-21swapper/221:13:592
735093992522,2cyclictest0-21swapper/220:45:592
735093992522,2cyclictest0-21swapper/220:02:592
735093992522,2cyclictest0-21swapper/219:13:592
73509399250,2cyclictest0-21swapper/220:13:592
4577091250,4ptp4l61490irq/134-eno1-TxRx-021:54:563
4577091250,4ptp4l61490irq/134-eno1-TxRx-000:14:553
735093992321,1cyclictest0-21swapper/221:09:002
735093992321,1cyclictest0-21swapper/221:09:002
735093992319,2cyclictest0-21swapper/200:13:592
231999220,13rtkit-daemon495-21gpm19:07:560
735093992118,2cyclictest0-21swapper/220:33:592
735093992118,2cyclictest0-21swapper/219:42:592
735093992017,2cyclictest0-21swapper/223:23:582
73509299192,13cyclictest735094-21latency_hist19:10:011
735093991816,1cyclictest0-21swapper/219:55:002
735093991815,2cyclictest0-21swapper/223:34:002
735093991814,2cyclictest784854-21turbostat21:45:002
7350939980,7cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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