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2026-08-09 - 14:28
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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 Sun Aug 09, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
361054799150140,8cyclictest3688534-21cp23:10:000
361054799144134,7cyclictest3661094-21latency_hist21:45:010
361054799135122,10cyclictest1213033-21systemd-journal21:10:000
361054999130118,8cyclictest3710275-21kworker/u8:1+flush-179:000:15:021
361054999129120,7cyclictest3644636-21latency_hist20:55:011
361054799123108,12cyclictest3705022-40gzip00:00:020
361054799119108,9cyclictest3698472-21kworker/u8:0+flush-179:023:45:250
361054799116108,5cyclictest3696617-21kworker/u8:3+flush-179:023:40:190
361054999115106,6cyclictest3623420-21latency_hist19:50:011
361054799115104,9cyclictest510-21rs:main0
361054799115104,8cyclictest3626600-21latency_hist20:00:010
361054999114104,6cyclictest3657636-21latency_hist21:35:001
361054799113105,5cyclictest3635201-21kworker/u8:2+flush-179:020:45:210
361054999112106,4cyclictest3639865-21latency_hist20:40:021
361054799111102,6cyclictest3635201-21kworker/u8:2+flush-179:020:25:230
36105499911084,24cyclictest3652445-21kworker/u8:1+flush-179:021:25:011
361054799109101,5cyclictest3696617-21kworker/u8:3+flush-179:000:03:590
36105499910691,13cyclictest3595173-21kworker/u8:3+flush-179:020:00:241
361054999106100,4cyclictest3615240-21kworker/u8:1+flush-179:019:40:151
36105479910496,5cyclictest3595173-21kworker/u8:3+flush-179:020:30:180
36105479910494,8cyclictest3708368-21latency_hist00:10:010
36105499910395,5cyclictest3696617-21kworker/u8:3+flush-179:000:00:011
36105499910293,6cyclictest3643049-21latency_hist20:50:011
36105479910295,5cyclictest3666796-21kworker/u8:0+flush-179:022:30:220
36105479910293,7cyclictest3662924-21kworker/u8:3+flush-179:022:10:240
36105479910190,7cyclictest1-21systemd21:05:010
36105479910094,4cyclictest3690297-21kworker/u8:2+flush-179:023:15:220
36105479910092,6cyclictest3680443-21kworker/u8:0+events_unbound22:55:000
36105479910088,9cyclictest510-21rs:main0
3610549999990,7cyclictest3620234-21latency_hist19:40:011
3610547999991,6cyclictest3649453-21kworker/u8:0+flush-179:021:15:220
3610549999788,7cyclictest3680468-21latency_hist22:45:021
3610547999789,5cyclictest3622905-21kworker/u8:0+flush-179:020:05:170
3610549999584,8cyclictest3629791-21latency_hist20:10:011
3610549999572,20cyclictest3661607-21apt-get21:45:101
3610547999487,5cyclictest3666796-21kworker/u8:0+flush-179:022:35:260
3610549999382,5cyclictest3656094-21kworker/u8:0+events_unbound21:35:211
3610549999283,6cyclictest3687069-21/usr/sbin/munin23:05:241
3610549999282,7cyclictest1213033-21systemd-journal20:25:001
3610547999286,4cyclictest3595173-21kworker/u8:3+flush-179:020:20:220
3610547999284,6cyclictest3680443-21kworker/u8:0+flush-179:022:55:210
3610549999185,4cyclictest3682050-21latency_hist22:50:011
3610547999184,5cyclictest3656094-21kworker/u8:0+flush-179:021:50:180
3610549999082,6cyclictest3675937-21apt-get22:30:111
3610549999069,19cyclictest3649453-21kworker/u8:0+flush-179:021:19:591
3610547999083,6cyclictest3718423-21kworker/u8:2+events_unbound00:40:000
3610547999082,6cyclictest3615240-21kworker/u8:1+flush-179:019:45:230
3610549998983,4cyclictest3662924-21kworker/u8:3+flush-179:022:10:271
3610547998983,4cyclictest3710275-21kworker/u8:1+flush-179:000:20:170
3610547998983,4cyclictest3682035-21kworker/u8:1+events_unbound23:35:010
3610547998983,4cyclictest3664559-21kworker/u8:1+flush-179:021:55:170
3610547998983,4cyclictest3615240-21kworker/u8:1+flush-179:019:40:170
3610547998982,5cyclictest3595173-21kworker/u8:3+flush-179:019:15:220
3610547998878,8cyclictest3657668-21http21:35:010
3610549998777,7cyclictest3661105-21apt-get21:45:001
3610547998782,4cyclictest3715502-21kworker/u8:0+flush-179:000:30:250
3610547998778,6cyclictest1-21systemd22:30:010
3610549998577,6cyclictest3704858-21apt-get00:00:041
3610549998576,6cyclictest3591940-21kworker/u8:2+events_unbound19:15:141
3610549998559,24cyclictest3595173-21kworker/u8:3+flush-179:020:35:001
3610547998580,4cyclictest3666796-21kworker/u8:0+flush-179:022:15:200
3610549998476,5cyclictest3654716-21apt-get21:25:131
3610547998478,5cyclictest3656094-21kworker/u8:0+events_unbound21:40:000
3610547998458,10cyclictest3701932-21apt-get23:50:120
3610549998376,5cyclictest3698472-21kworker/u8:0+flush-179:023:45:161
3610547998275,5cyclictest3595173-21kworker/u8:3+flush-179:020:40:010
3610547998274,5cyclictest3688413-21kworker/u8:0+flush-179:023:25:150
3610549998174,5cyclictest3680443-21kworker/u8:0+flush-179:023:00:001
3610549998173,5cyclictest3631636-21latency_hist20:15:011
3610547998175,4cyclictest3595173-21kworker/u8:3+flush-179:020:50:230
3610547998172,7cyclictest3651011-21apt-get21:15:000
3610549997969,8cyclictest3623675-21apt-get19:50:141
3610549997969,8cyclictest3623675-21apt-get19:50:131
3610549997969,7cyclictest1213033-21systemd-journal19:30:011
3610547997973,4cyclictest3628748-21kworker/u8:1+events_unbound20:10:140
3610547997870,6cyclictest3666796-21kworker/u8:0+flush-179:022:05:200
3610547997671,4cyclictest3641495-21kworker/u8:1+flush-179:020:55:220
3610547997670,4cyclictest3595173-21kworker/u8:3+flush-179:020:40:220
3610549997567,6cyclictest3651016-21latency_hist21:15:011
3610549997562,10cyclictest3710220-21apt-get00:15:001
3610549997562,10cyclictest3710220-21apt-get00:15:001
3610547997567,5cyclictest3708863-21kworker/u8:0+flush-179:000:10:220
3610547997567,5cyclictest3708863-21kworker/u8:0+flush-179:000:10:220
3610549997466,6cyclictest3635345-21apt-get20:25:121
3610547997465,6cyclictest1213033-21systemd-journal00:25:140
3610547997368,4cyclictest3682035-21kworker/u8:1+flush-179:023:20:230
3610547997366,5cyclictest3652445-21kworker/u8:1+flush-179:021:25:270
3610553997239,2cyclictest0-21swapper/223:16:582
3610549997266,4cyclictest3669286-21kworker/u8:1+flush-179:022:20:161
3610549997266,4cyclictest3669286-21kworker/u8:1+flush-179:022:20:151
3610549997265,5cyclictest3716851-21latency_hist00:35:011
3610549997265,5cyclictest3696617-21kworker/u8:3+events_unbound23:40:001
3610547997266,4cyclictest3595173-21kworker/u8:3+flush-179:019:20:240
3610549997163,6cyclictest1213033-21systemd-journal23:02:381
3610549996959,7cyclictest3682035-21kworker/u8:1+flush-179:023:20:211
3610547996963,4cyclictest3669286-21kworker/u8:1+flush-179:022:20:180
3610547996963,4cyclictest3669286-21kworker/u8:1+flush-179:022:20:170
3610547996862,4cyclictest3682035-21kworker/u8:1+flush-179:023:00:190
3610547996856,10cyclictest1213033-21systemd-journal19:55:000
3610547996856,10cyclictest1213033-21systemd-journal19:55:000
3610547996760,5cyclictest3635201-21kworker/u8:2+flush-179:021:45:140
3610549996656,8cyclictest3698472-21kworker/u8:0+events_unbound23:45:001
3610549996557,6cyclictest3695047-21latency_hist23:30:021
3610549996553,9cyclictest3618380-21latency_hist19:35:011
3610549996457,5cyclictest3662924-21kworker/u8:3+flush-179:021:55:271
3610549996455,6cyclictest3633239-21latency_hist20:20:011
3610547996458,4cyclictest3675654-21kworker/u8:2+flush-179:022:40:230
3610547996458,4cyclictest3595173-21kworker/u8:3+events_unbound19:10:180
3610549996357,5cyclictest3675654-21kworker/u8:2+flush-179:022:40:011
3610549996357,4cyclictest3644890-21apt-get20:55:121
3610549996354,7cyclictest3703306-21kworker/u8:2+flush-179:000:20:221
3610547996356,6cyclictest3635201-21kworker/u8:2+flush-179:021:24:380
3610549996253,6cyclictest3595173-21kworker/u8:3+flush-179:019:10:231
3610549996251,9cyclictest3690297-21kworker/u8:2+events_unbound23:30:261
3610547996252,8cyclictest3626870-21apt-get20:00:140
3610549996155,5cyclictest3675715-21kworker/u8:3+events_unbound22:50:241
3610549996155,5cyclictest3666796-21kworker/u8:0+flush-179:022:25:241
3610549996154,5cyclictest3696617-21kworker/u8:3+flush-179:000:07:101
3610549996053,5cyclictest3666796-21kworker/u8:0+flush-179:022:15:231
3610549996053,5cyclictest3641495-21kworker/u8:1+flush-179:021:00:221
3610549996053,5cyclictest3635201-21kworker/u8:2+flush-179:020:40:191
3610547995953,4cyclictest3682035-21kworker/u8:1+flush-179:023:35:270
3610549995853,4cyclictest3717108-21apt-get00:35:121
3610549995853,4cyclictest3656094-21kworker/u8:0+flush-179:021:50:211
3610547995853,4cyclictest3680443-21kworker/u8:0+flush-179:022:45:260
3610547995852,5cyclictest3618361-21kworker/u8:0+events_unbound19:35:230
3610549995749,5cyclictest3688413-21kworker/u8:0+flush-179:023:10:211
3610547995750,5cyclictest3688413-21kworker/u8:0+events_unbound23:10:170
3610549995649,5cyclictest3641495-21kworker/u8:1+flush-179:021:05:241
3610555995547,6cyclictest3666127-21turbostat21:59:593
3610549995548,5cyclictest3662924-21kworker/u8:3+flush-179:022:10:001
3610547995448,5cyclictest3622905-21kworker/u8:0+flush-179:020:15:190
3610549995341,7cyclictest3622905-21kworker/u8:0+events_unbound19:55:211
3610547995348,4cyclictest3703306-21kworker/u8:2+events_unbound00:15:180
3610547995347,5cyclictest3591940-21kworker/u8:2+events_unbound19:25:220
3610549995045,4cyclictest3703306-21kworker/u8:2+flush-179:000:25:251
4577091490,13ptp4l441ktimers/319:10:013
3610555994824,1cyclictest0-21swapper/321:24:583
3610553994843,2cyclictest0-21swapper/220:18:592
3610549994843,4cyclictest3662924-21kworker/u8:3+flush-179:022:04:381
3610549994840,7cyclictest3696617-21kworker/u8:3+flush-179:023:50:241
3610549994836,9cyclictest3690520-21apt-get23:15:121
3610555994441,2cyclictest0-21swapper/320:18:593
3610549994438,5cyclictest3595173-21kworker/u8:3+flush-179:019:20:271
3610555994239,2cyclictest0-21swapper/300:07:593
361055599410,40cyclictest3628209-21turbostat20:05:003
3610549994133,6cyclictest3610394-21latency_hist19:10:031
3610553994036,2cyclictest0-21swapper/223:23:002
3610555993937,1cyclictest0-21swapper/323:16:593
361055399390,1cyclictest0-21swapper/223:39:592
3610553993834,2cyclictest0-21swapper/223:49:552
361055399380,36cyclictest0-21swapper/223:56:002
3610555993734,2cyclictest0-21swapper/321:49:553
361055599370,36cyclictest0-21swapper/319:38:593
361055599370,35cyclictest0-21swapper/322:37:593
3610553993733,2cyclictest0-21swapper/222:09:552
361055399370,35cyclictest0-21swapper/221:10:582
3610555993634,1cyclictest0-21swapper/323:23:003
3610555993634,1cyclictest0-21swapper/322:16:593
361055599360,29cyclictest0-21swapper/323:42:593
3610553993633,2cyclictest0-21swapper/200:06:592
3610555993533,1cyclictest0-21swapper/319:19:553
361055599350,1cyclictest0-21swapper/322:46:593
3610553993532,2cyclictest0-21swapper/200:39:592
3610553993531,2cyclictest0-21swapper/222:56:592
3610555993433,1cyclictest0-21swapper/323:46:583
3610553993430,2cyclictest0-21swapper/222:30:592
3610553993429,2cyclictest0-21swapper/200:14:002
3610553993429,2cyclictest0-21swapper/200:13:592
4577091330,5ptp4l441ktimers/322:44:563
3610555993331,1cyclictest0-21swapper/323:36:003
3610553993330,2cyclictest0-21swapper/219:33:592
3610555993231,1cyclictest0-21swapper/321:51:593
3610555993230,1cyclictest0-21swapper/322:09:543
3610553993229,2cyclictest0-21swapper/221:38:592
3610553993229,2cyclictest0-21swapper/200:24:592
3610553993229,1cyclictest0-21swapper/221:24:592
4577091310,9ptp4l441ktimers/321:09:563
3610555993129,1cyclictest0-21swapper/300:39:593
3610555993128,2cyclictest0-21swapper/322:56:593
3610553993129,1cyclictest0-21swapper/221:29:582
3610553993127,2cyclictest0-21swapper/220:22:592
361055399310,29cyclictest0-21swapper/223:40:132
361055399310,29cyclictest0-21swapper/221:05:132
361055399310,29cyclictest0-21swapper/220:50:142
361055399310,29cyclictest0-21swapper/219:54:592
361055399310,29cyclictest0-21swapper/219:54:592
361055399310,29cyclictest0-21swapper/219:35:012
4577091300,7ptp4l441ktimers/300:00:003
3610555993028,1cyclictest0-21swapper/322:30:593
3610555993027,2cyclictest0-21swapper/320:10:033
361055599300,23cyclictest0-21swapper/323:30:143
3610553993027,2cyclictest0-21swapper/219:23:592
3610553993027,2cyclictest0-21swapper/200:15:152
361055399300,2cyclictest0-21swapper/219:10:142
361055399300,28cyclictest0-21swapper/220:10:032
361055399300,1cyclictest0-21swapper/222:38:002
4577091290,7ptp4l441ktimers/319:55:003
4577091290,7ptp4l441ktimers/319:55:003
3610555992927,1cyclictest0-21swapper/321:14:593
3610555992927,1cyclictest0-21swapper/319:55:143
3610555992927,1cyclictest0-21swapper/319:33:593
3610555992927,1cyclictest0-21swapper/300:15:033
3610555992926,2cyclictest0-21swapper/300:25:003
3610555992926,2cyclictest0-21swapper/300:13:593
3610555992926,2cyclictest0-21swapper/300:13:593
3610555992926,2cyclictest0-21swapper/300:00:143
3610555992923,5cyclictest3646241-21turbostat21:00:013
361055599290,27cyclictest0-21swapper/321:35:013
361055599290,27cyclictest0-21swapper/320:50:143
361055599290,27cyclictest0-21swapper/320:25:013
361055599290,21cyclictest0-21swapper/321:15:033
3610553992927,1cyclictest0-21swapper/223:30:142
3610553992926,2cyclictest0-21swapper/221:35:012
3610553992926,2cyclictest0-21swapper/220:59:592
3610553992926,2cyclictest0-21swapper/219:55:142
3610553992925,2cyclictest0-21swapper/219:45:142
361055399290,2cyclictest0-21swapper/221:15:032
361055399290,27cyclictest0-21swapper/223:00:132
361055399290,27cyclictest0-21swapper/222:40:132
361055399290,27cyclictest0-21swapper/221:50:102
361055399290,27cyclictest0-21swapper/221:45:132
361055399290,27cyclictest0-21swapper/220:35:122
361055399290,27cyclictest0-21swapper/200:30:582
4577091280,7ptp4l61490irq/134-eno1-TxRx-020:10:003
4577091280,6ptp4l61490irq/134-eno1-TxRx-020:30:003
4577091280,6ptp4l441ktimers/322:25:013
4577091280,6ptp4l441ktimers/322:25:003
3610555992826,1cyclictest0-21swapper/321:29:593
361055599280,27cyclictest0-21swapper/321:35:003
361055599280,27cyclictest0-21swapper/319:10:153
361055599280,26cyclictest0-21swapper/323:00:143
361055599280,26cyclictest0-21swapper/320:35:133
3610553992825,2cyclictest0-21swapper/223:10:122
3610553992825,2cyclictest0-21swapper/222:27:582
3610553992825,2cyclictest0-21swapper/220:25:012
3610553992825,2cyclictest0-21swapper/200:25:152
3610553992825,2cyclictest0-21swapper/200:00:142
361055399280,26cyclictest0-21swapper/221:55:582
4577091270,7ptp4l441ktimers/320:49:593
4577091270,6ptp4l61490irq/134-eno1-TxRx-022:30:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-000:35:003
4577091270,6ptp4l441ktimers/323:14:553
4577091270,6ptp4l441ktimers/323:10:003
4577091270,6ptp4l441ktimers/319:49:563
4577091270,5ptp4l61490irq/134-eno1-TxRx-022:55:003
4577091270,5ptp4l441ktimers/320:45:003
4577091270,5ptp4l441ktimers/320:35:003
3610555992724,2cyclictest0-21swapper/300:25:143
361055599270,1cyclictest0-21swapper/319:20:593
361055399270,24cyclictest0-21swapper/221:44:542
4577091260,5ptp4l441ktimers/323:54:563
4577091260,5ptp4l441ktimers/323:29:553
4577091260,5ptp4l441ktimers/321:44:553
4577091260,4ptp4l441ktimers/319:45:013
4577091260,4ptp4l441ktimers/319:30:013
3610553992623,2cyclictest0-21swapper/223:09:002
3610553992623,2cyclictest0-21swapper/222:48:592
3610553992623,2cyclictest0-21swapper/220:47:592
3610553992622,2cyclictest0-21swapper/222:53:002
4577091250,4ptp4l61490irq/134-eno1-TxRx-022:15:003
3610555992523,1cyclictest0-21swapper/321:00:143
3610553992422,1cyclictest0-21swapper/223:54:592
3610553992421,2cyclictest0-21swapper/220:03:592
361055399240,1cyclictest0-21swapper/219:20:002
231999230,13rtkit-daemon908065-21snmpd19:08:060
3610553992219,2cyclictest0-21swapper/219:25:152
3610553992017,2cyclictest0-21swapper/221:02:592
3610553992017,2cyclictest0-21swapper/220:35:002
3610553992016,2cyclictest0-21swapper/220:08:592
3610553991917,1cyclictest0-21swapper/222:25:002
3610553991917,1cyclictest0-21swapper/222:25:002
3610553991916,2cyclictest0-21swapper/222:12:592
3610553991815,2cyclictest0-21swapper/222:02:582
4577091160,3ptp4l61490irq/134-eno1-TxRx-022:00:173
3610553991512,2cyclictest0-21swapper/219:41:592
3610553991511,2cyclictest3695062-21turbostat23:30:012
3610553991310,2cyclictest0-21swapper/222:15:582
36105539974,2cyclictest0-21swapper/220:44:042
36105539930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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