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2026-07-23 - 06:04
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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 Jul 23, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
357576799150142,5cyclictest3621040-21kworker/u8:3+events_unbound21:30:250
357577199141129,8cyclictest3604883-21latency_hist20:40:011
357576799130123,5cyclictest3604915-21kworker/u8:1+flush-179:021:25:000
357576799130122,6cyclictest3652059-21kworker/u8:0+flush-179:023:15:000
357576799129120,6cyclictest3652059-21kworker/u8:0+events_unbound23:25:250
357576799128122,4cyclictest3604915-21kworker/u8:1+flush-179:020:55:220
357577199126116,7cyclictest3656858-21latency_hist23:30:011
357576799126116,7cyclictest3596640-21latency_hist20:15:000
357577199121106,11cyclictest3625864-21kworker/u8:3+flush-179:022:00:001
357576799114107,5cyclictest3668318-21kworker/u8:1+events_unbound00:05:010
35757719911297,12cyclictest1213033-21systemd-journal00:04:001
357577199112101,9cyclictest3627425-21latency_hist21:50:011
3575767991121,108cyclictest1-21systemd20:45:000
357576799110100,7cyclictest3587097-21kworker/u8:0+flush-179:020:05:010
35757679910999,7cyclictest3613095-21latency_hist21:05:020
3575767991091,105cyclictest1-21systemd00:40:000
357576799108102,4cyclictest3665123-21kworker/u8:0+flush-179:000:05:190
357576799108102,4cyclictest3640400-21kworker/u8:1+flush-179:022:40:140
35757719910689,12cyclictest3608055-21latency_hist20:50:011
357576799106100,4cyclictest3561173-21kworker/u8:1+flush-179:019:49:590
35757719910596,6cyclictest3593209-21latency_hist20:05:011
35757679910499,3cyclictest3617290-21kworker/u8:2+flush-179:021:40:240
35757719910393,7cyclictest3603271-21latency_hist20:35:001
35757719910387,12cyclictest510-21rs:main1
35757679910397,4cyclictest3604915-21kworker/u8:1+flush-179:021:25:220
35757679910396,4cyclictest3645166-21kworker/u8:2+events_unbound22:50:250
35757679910391,7cyclictest3661936-21kworker/u8:2+events_unbound23:55:260
35757679910391,7cyclictest3661936-21kworker/u8:2+events_unbound23:55:250
35757719910189,9cyclictest3665123-21kworker/u8:0+flush-179:000:20:001
35757679910094,4cyclictest3561173-21kworker/u8:1+flush-179:019:40:230
35757679910092,6cyclictest3660551-21kworker/u8:0+flush-179:023:45:000
35757679910091,6cyclictest3625864-21kworker/u8:3+flush-179:022:10:230
3575767999888,8cyclictest3561173-21kworker/u8:1+flush-179:019:15:220
3575771999789,6cyclictest3614937-21apt-get21:10:131
3575771999786,8cyclictest1213033-21systemd-journal20:00:001
3575767999788,6cyclictest3652059-21kworker/u8:0+flush-179:023:20:250
3575767999784,10cyclictest1213033-21systemd-journal22:20:010
3575767999690,4cyclictest3572707-21kworker/u8:2+flush-179:019:10:220
3575767999689,6cyclictest3561173-21kworker/u8:1+events_unbound19:30:230
3575767999689,5cyclictest3640400-21kworker/u8:1+events_unbound22:35:000
3575767999588,5cyclictest3625864-21kworker/u8:3+flush-179:021:50:200
3575767999486,5cyclictest3655303-21kworker/u8:1+events_unbound23:35:270
3575767999483,6cyclictest3652059-21kworker/u8:0+flush-179:023:15:240
3575771999383,7cyclictest3624248-21latency_hist21:40:011
3575771999383,7cyclictest3614683-21latency_hist21:10:011
3575767999386,5cyclictest3625864-21kworker/u8:3+flush-179:022:05:170
3575767999385,6cyclictest3669955-21kworker/u8:3+events_unbound00:20:240
3575767999385,6cyclictest3640400-21kworker/u8:1+events_unbound22:45:170
3575771999282,8cyclictest3665329-21apt-get23:55:131
3575771999282,8cyclictest3665329-21apt-get23:55:121
3575767999183,6cyclictest3604915-21kworker/u8:1+events_unbound21:05:270
3575771998980,6cyclictest3561173-21kworker/u8:1+flush-179:019:20:251
3575771998974,11cyclictest510-21rs:main1
3575767998983,4cyclictest3601921-21kworker/u8:2+flush-179:020:35:230
3575767998979,7cyclictest3617290-21kworker/u8:2+events_unbound21:20:010
3575767998882,4cyclictest3655303-21kworker/u8:1+flush-179:023:30:150
3575767998878,8cyclictest3645739-21kworker/u8:3+events_unbound23:10:010
3575767998777,7cyclictest3627440-21apt-get21:50:000
3575767998777,6cyclictest3589990-21kworker/u8:2+flush-179:019:55:230
3575771998675,8cyclictest3580723-21apt-get19:25:101
3575767998679,4cyclictest3625864-21kworker/u8:3+flush-179:022:25:150
3575767998676,7cyclictest3598508-21kworker/u8:1+flush-179:020:20:130
3575767998673,6cyclictest3589990-21kworker/u8:2+flush-179:020:05:260
3575771998575,7cyclictest3644375-21apt-get22:50:131
3575771998478,4cyclictest3625864-21kworker/u8:3+flush-179:022:25:191
3575771998471,9cyclictest3652059-21kworker/u8:0+flush-179:023:24:591
3575767998477,4cyclictest3625818-21kworker/u8:0+flush-179:021:55:230
3575767998476,5cyclictest3665123-21kworker/u8:0+flush-179:000:25:140
3575767998375,5cyclictest3616268-21latency_hist21:15:010
3575771998167,10cyclictest3589990-21kworker/u8:2+events_unbound20:10:261
3575767998173,6cyclictest3561173-21kworker/u8:1+flush-179:019:21:250
3575767998173,5cyclictest3604915-21kworker/u8:1+flush-179:020:50:250
3575767998171,5cyclictest3625818-21kworker/u8:0+flush-179:022:00:210
3575767998071,7cyclictest3587097-21kworker/u8:0+flush-179:020:15:220
3575767998070,7cyclictest3655303-21kworker/u8:1+flush-179:023:49:590
3575771997973,4cyclictest3608034-21kworker/u8:3+events_unbound21:00:231
3575767997973,4cyclictest3658692-21kworker/u8:3+flush-179:023:55:010
3575767997972,4cyclictest3638299-21kworker/u8:0+flush-179:023:00:150
3575771997869,5cyclictest3625864-21kworker/u8:3+flush-179:021:50:241
3575767997871,4cyclictest3617290-21kworker/u8:2+flush-179:021:35:160
3575767997866,8cyclictest1213033-21systemd-journal19:55:000
3575771997773,3cyclictest3655303-21kworker/u8:1+events_unbound23:35:011
3575767997671,4cyclictest3598508-21kworker/u8:1+flush-179:020:30:170
3575767997669,5cyclictest3587097-21kworker/u8:0+flush-179:020:45:140
3575771997563,8cyclictest3676008-21kworker/u8:2+events_unbound00:30:231
3575771997563,8cyclictest3676008-21kworker/u8:2+events_unbound00:30:221
3575771997464,7cyclictest3638299-21kworker/u8:0+flush-179:023:00:261
3575767997366,5cyclictest3645166-21kworker/u8:2+flush-179:022:55:220
3575767997363,8cyclictest3600092-21apt-get20:25:130
3575767997363,8cyclictest3600092-21apt-get20:25:120
3575771997259,11cyclictest3583681-21kworker/u8:2+flush-179:019:40:011
3575771997168,2cyclictest3665123-21kworker/u8:0+events_unbound00:35:211
3575771997159,9cyclictest510-21rs:main1
3575771997062,6cyclictest3631134-21apt-get22:00:111
3575771997061,6cyclictest3572707-21kworker/u8:2+flush-179:019:10:231
3575771997058,10cyclictest3646248-21diskstats22:55:151
3575767997065,4cyclictest3561173-21kworker/u8:1+flush-179:019:35:230
3575771996958,8cyclictest3575656-21latency_hist19:10:021
3575767996861,5cyclictest3632454-21kworker/u8:1+events_unbound22:20:180
3575771996757,7cyclictest3561173-21kworker/u8:1+flush-179:019:45:001
3575767996758,7cyclictest3670166-21latency_hist00:15:000
357577499660,64cyclictest0-21swapper/319:59:003
3575771996655,8cyclictest3625864-21kworker/u8:3+events_unbound22:10:001
3575771996457,5cyclictest3655303-21kworker/u8:1+flush-179:023:40:241
3575771996451,9cyclictest3632454-21kworker/u8:1+flush-179:022:20:221
3575771996253,6cyclictest3665072-21latency_hist23:55:001
3575771996250,9cyclictest3625864-21kworker/u8:3+flush-179:022:10:181
3575771996151,8cyclictest3610136-21/usr/sbin/munin20:55:161
3575767996156,3cyclictest1213033-21systemd-journal19:27:240
3575771995947,10cyclictest3621040-21kworker/u8:3+events_unbound21:30:171
3575767995952,5cyclictest3669955-21kworker/u8:3+flush-179:000:15:150
3575771995852,4cyclictest3625864-21kworker/u8:3+flush-179:022:15:231
3575771995849,7cyclictest3561173-21kworker/u8:1+events_unbound19:30:191
357577199580,56cyclictest3640936-21turbostat22:44:551
3575771995446,5cyclictest3674952-21latency_hist00:30:011
3575771995347,4cyclictest3645739-21kworker/u8:3+flush-179:023:10:261
3575771995246,5cyclictest3598508-21kworker/u8:1+events_unbound20:25:251
3575771995246,5cyclictest3598508-21kworker/u8:1+events_unbound20:25:241
3575771995244,6cyclictest3655303-21kworker/u8:1+flush-179:023:45:231
3575771995240,9cyclictest3617290-21kworker/u8:2+flush-179:021:20:201
3575771995043,5cyclictest1213033-21systemd-journal19:50:011
357577199501,44cyclictest0-21swapper/121:15:141
3575767995045,4cyclictest3676008-21kworker/u8:2+flush-179:000:30:220
3575767995045,4cyclictest3676008-21kworker/u8:2+flush-179:000:30:210
4577091490,13ptp4l441ktimers/319:10:013
3575774994941,6cyclictest3640431-21turbostat22:30:013
3575771994942,5cyclictest3652327-21apt-get23:15:141
357577199490,48cyclictest0-21swapper/100:09:591
3575771994842,5cyclictest3587097-21kworker/u8:0+flush-179:020:15:251
3575771994837,8cyclictest3655303-21kworker/u8:1+events_unbound23:35:201
3575774994543,1cyclictest0-21swapper/321:51:593
3575771994539,5cyclictest3669955-21kworker/u8:3+flush-179:000:20:211
3575771994539,5cyclictest3561173-21kworker/u8:1+flush-179:019:15:261
3575771994533,9cyclictest1213033-21systemd-journal20:05:121
3575771994236,5cyclictest3598508-21kworker/u8:1+flush-179:020:20:181
3575774994139,1cyclictest0-21swapper/322:57:593
357577299410,1cyclictest0-21swapper/222:24:592
3575771994128,12cyclictest3588549-21latency_hist19:50:001
357577199411,25cyclictest3649358-21ls23:05:131
357577199410,27cyclictest0-21swapper/121:45:001
357577499400,39cyclictest3624252-21turbostat21:40:003
3575774993937,1cyclictest0-21swapper/322:43:593
3575774993937,1cyclictest0-21swapper/300:07:003
3575774993936,1cyclictest0-21swapper/300:31:593
3575774993936,1cyclictest0-21swapper/300:31:583
357577499390,37cyclictest3624252-21turbostat21:44:553
357577299390,36cyclictest0-21swapper/222:35:002
357577299390,36cyclictest0-21swapper/221:19:552
357577299390,36cyclictest0-21swapper/221:09:002
3575771993936,2cyclictest0-21swapper/122:49:591
357577199390,25cyclictest3605760-21memory20:40:191
3575774993836,1cyclictest0-21swapper/322:35:003
357577299380,36cyclictest0-21swapper/220:44:592
357577299380,35cyclictest0-21swapper/220:55:002
3575774993734,2cyclictest0-21swapper/319:38:593
3575772993734,2cyclictest0-21swapper/219:24:592
3575772993734,2cyclictest0-21swapper/200:02:592
3575774993634,1cyclictest0-21swapper/323:42:583
3575774993634,1cyclictest0-21swapper/322:35:593
3575774993634,1cyclictest0-21swapper/321:28:593
3575772993634,1cyclictest0-21swapper/222:39:592
357577299360,1cyclictest0-21swapper/221:59:592
357577299360,1cyclictest0-21swapper/221:41:592
4577091350,3ptp4l441ktimers/320:50:163
3575774993533,1cyclictest0-21swapper/323:38:003
3575774993533,1cyclictest0-21swapper/320:45:593
3575772993532,2cyclictest0-21swapper/222:44:592
3575772993532,2cyclictest0-21swapper/221:48:592
357577299350,1cyclictest0-21swapper/222:06:592
357577299350,1cyclictest0-21swapper/219:20:012
3575771993529,4cyclictest0-21swapper/122:34:591
3575774993432,1cyclictest0-21swapper/320:24:553
3575774993432,1cyclictest0-21swapper/320:06:593
3575774993431,1cyclictest0-21swapper/323:25:583
3575772993432,1cyclictest0-21swapper/220:30:002
3575772993432,1cyclictest0-21swapper/220:30:002
3575772993431,2cyclictest0-21swapper/222:16:592
3575772993431,2cyclictest0-21swapper/200:23:592
3575774993331,1cyclictest0-21swapper/322:03:593
3575774993331,1cyclictest0-21swapper/321:34:553
3575774993331,1cyclictest0-21swapper/319:30:593
3575774993330,2cyclictest0-21swapper/319:42:003
357577199332,25cyclictest2304-21lightdm-gtk-gre22:36:001
3575774993230,1cyclictest0-21swapper/322:52:003
3575774993230,1cyclictest0-21swapper/321:46:593
3575772993230,1cyclictest0-21swapper/222:59:592
3575772993230,1cyclictest0-21swapper/220:25:012
3575772993228,2cyclictest0-21swapper/200:40:002
3575774993129,1cyclictest0-21swapper/322:22:583
357577499310,1cyclictest0-21swapper/319:51:593
3575772993129,1cyclictest0-21swapper/223:20:002
3575772993128,2cyclictest0-21swapper/220:57:592
3575772993128,2cyclictest0-21swapper/220:00:002
4577091300,7ptp4l61490irq/134-eno1-TxRx-023:20:013
4577091300,7ptp4l441ktimers/321:20:013
4577091300,3ptp4l441ktimers/322:14:553
3575774993027,2cyclictest0-21swapper/300:15:103
357577499300,2cyclictest0-21swapper/320:35:143
3575772993027,2cyclictest0-21swapper/223:07:002
3575772993027,2cyclictest0-21swapper/219:45:152
357577299300,2cyclictest0-21swapper/222:50:142
357577299300,29cyclictest0-21swapper/219:30:132
357577299300,28cyclictest0-21swapper/219:25:122
357577299300,27cyclictest0-21swapper/223:25:142
357577299300,23cyclictest0-21swapper/220:05:012
4577091290,3ptp4l431rcuc/300:39:543
3575774992926,2cyclictest0-21swapper/322:45:143
357577499290,1cyclictest0-21swapper/323:00:153
357577499290,1cyclictest0-21swapper/320:59:553
3575772992927,1cyclictest0-21swapper/221:29:592
3575772992926,2cyclictest0-21swapper/221:35:142
357577299290,27cyclictest0-21swapper/223:45:132
357577299290,27cyclictest0-21swapper/221:00:122
357577299290,27cyclictest0-21swapper/220:10:132
357577299290,27cyclictest0-21swapper/200:00:022
357577299290,27cyclictest0-21swapper/200:00:022
4577091280,7ptp4l61490irq/134-eno1-TxRx-023:55:003
4577091280,6ptp4l61490irq/134-eno1-TxRx-023:49:593
4577091280,6ptp4l441ktimers/321:25:003
4577091280,6ptp4l441ktimers/319:25:013
4577091280,6ptp4l441ktimers/300:05:013
3575774992826,1cyclictest0-21swapper/323:10:123
3575774992826,1cyclictest0-21swapper/322:15:123
3575774992826,1cyclictest0-21swapper/320:15:143
3575774992826,1cyclictest0-21swapper/319:12:003
3575774992826,1cyclictest0-21swapper/300:25:103
3575774992825,2cyclictest3582065-21turbostat19:30:003
357577499280,2cyclictest0-21swapper/320:25:143
357577499280,2cyclictest0-21swapper/320:25:133
357577499280,27cyclictest0-21swapper/323:20:143
357577499280,26cyclictest0-21swapper/320:30:023
357577499280,26cyclictest0-21swapper/300:20:133
357577499280,1cyclictest0-21swapper/319:15:133
3575772992825,2cyclictest0-21swapper/223:40:142
3575772992825,2cyclictest0-21swapper/223:36:592
357577299280,2cyclictest0-21swapper/223:30:002
357577299280,2cyclictest0-21swapper/221:30:142
357577299280,27cyclictest0-21swapper/220:05:022
357577299280,26cyclictest0-21swapper/220:39:592
357577299280,26cyclictest0-21swapper/219:40:132
4577091270,5ptp4l441ktimers/319:50:003
4577091270,5ptp4l441ktimers/300:15:003
3575774992725,1cyclictest0-21swapper/323:55:143
3575774992725,1cyclictest0-21swapper/323:55:133
3575774992725,1cyclictest0-21swapper/321:55:143
357577499270,26cyclictest0-21swapper/321:06:593
3575772992724,2cyclictest0-21swapper/223:54:582
3575772992724,2cyclictest0-21swapper/219:13:002
357577299270,26cyclictest0-21swapper/200:13:592
3575767992723,3cyclictest0-21swapper/022:40:000
4577091260,5ptp4l61490irq/134-eno1-TxRx-023:35:013
3575774992624,1cyclictest0-21swapper/321:01:003
3575774992623,2cyclictest0-21swapper/322:08:593
357577499260,25cyclictest0-21swapper/320:40:593
3575772992623,2cyclictest0-21swapper/222:49:002
3575772992623,2cyclictest0-21swapper/221:24:002
3575772992622,2cyclictest0-21swapper/221:54:592
357577299260,24cyclictest0-21swapper/223:10:592
357577299260,24cyclictest0-21swapper/220:48:582
357577299260,24cyclictest0-21swapper/220:15:132
357577299260,24cyclictest0-21swapper/200:15:582
4577091250,4ptp4l441ktimers/320:05:003
4577091250,3ptp4l441ktimers/320:14:553
3575774992523,1cyclictest0-21swapper/321:13:593
357577499250,24cyclictest0-21swapper/323:08:593
3575772992422,1cyclictest0-21swapper/222:13:592
3575772992421,2cyclictest0-21swapper/223:00:152
3575772992219,2cyclictest0-21swapper/219:50:122
3575772992018,1cyclictest0-21swapper/221:15:002
3575772992016,2cyclictest0-21swapper/200:32:592
3575772992016,2cyclictest0-21swapper/200:32:592
3575772991917,1cyclictest0-21swapper/223:21:002
3575772991916,2cyclictest0-21swapper/200:06:002
231999190,10rtkit-daemon908065-21snmpd19:07:480
3575772991513,1cyclictest0-21swapper/200:30:012
3575772991512,2cyclictest0-21swapper/222:02:592
357577299139,2cyclictest0-21swapper/219:38:592
3575772991311,1cyclictest0-21swapper/220:34:582
35757729974,2cyclictest0-21swapper/222:27:582
35757729930,2cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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