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2025-12-14 - 14:31
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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 Dec 14, 2025 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41871109911086,20cyclictest41386-21latency_hist21:40:011
4187112999056,32cyclictest0-21swapper/200:20:592
4187107998447,34cyclictest714-21Xorg00:20:590
4187107998172,7cyclictest49611-21latency_hist22:05:010
4187107997870,6cyclictest83817-21latency_hist23:50:010
4187107997671,4cyclictest2961779-21kworker/u8:2+flush-179:019:15:360
4187107997666,7cyclictest23616-21latency_hist20:45:010
4187107997468,4cyclictest56016-21kworker/u8:3+events_unbound22:55:250
4187110997367,4cyclictest22049-21kworker/u8:2+flush-179:020:45:261
4187107997165,4cyclictest56016-21kworker/u8:3+flush-179:023:20:000
4187107997164,4cyclictest87064-21kworker/u8:1+events_unbound00:04:000
4187107996963,5cyclictest56016-21kworker/u8:3+flush-179:023:30:000
4187107996863,4cyclictest36587-21kworker/u8:1+events_unbound22:20:260
4187107996863,4cyclictest36587-21kworker/u8:1+events_unbound22:20:250
4187110996755,10cyclictest77990-21diskstats23:30:141
4187110996660,4cyclictest36587-21kworker/u8:1+flush-179:021:50:001
4187107996661,4cyclictest41428-21kworker/u8:3+events_unbound21:45:250
4187107996659,5cyclictest27024-21kworker/u8:0+events_unbound21:00:150
4187107996561,3cyclictest4188626-21kworker/u8:4+flush-179:019:50:260
4187107996357,4cyclictest56016-21kworker/u8:3+flush-179:022:30:230
4187107996255,6cyclictest80682-21kworker/u8:3+flush-179:023:50:240
4187107996152,7cyclictest35002-21/usr/sbin/munin21:20:220
4187112996057,2cyclictest0-21swapper/223:23:592
4187107996054,3cyclictest46141-21kworker/u8:2+flush-179:021:55:030
4187107996054,3cyclictest46141-21kworker/u8:2+flush-179:021:55:020
4187107996049,8cyclictest95530-21/usr/sbin/munin00:25:220
4187110995852,5cyclictest714-21Xorg22:42:591
4187110995752,3cyclictest61056-21kworker/u8:0+flush-179:022:45:201
4187112995624,1cyclictest0-21swapper/220:51:592
4187110995546,7cyclictest90547-21kworker/u8:3+flush-179:000:40:001
4187107995545,7cyclictest27024-21kworker/u8:0+flush-179:021:15:210
4187115995452,1cyclictest0-21swapper/322:42:593
418711099541,31cyclictest25456-21apt-get20:50:151
4187107995448,4cyclictest4174491-21kworker/u8:0+flush-179:019:25:170
4187110995343,8cyclictest85659-21apt-get23:55:131
4187110995342,9cyclictest77189-21latency_hist23:30:011
4187107995345,6cyclictest70562-21latency_hist23:10:010
4187107995345,6cyclictest70562-21latency_hist23:10:010
4187110995244,6cyclictest6097-21latency_hist19:50:011
4187107995248,3cyclictest87064-21kworker/u8:1+flush-179:000:05:230
4187115995149,1cyclictest0-21swapper/321:47:003
4187110995146,4cyclictest46141-21kworker/u8:2+events_unbound22:10:231
4187107995148,2cyclictest0-21swapper/023:23:590
4187107995145,4cyclictest90547-21kworker/u8:3+flush-179:000:30:190
4187107995145,4cyclictest15617-21kworker/u8:2+events_unbound20:30:010
4187110995034,15cyclictest0-21swapper/119:52:581
4187107995045,3cyclictest90547-21kworker/u8:3+flush-179:000:35:240
4187107995042,6cyclictest25236-21kworker/u8:1+flush-179:020:55:200
4577091490,13ptp4l441ktimers/319:10:003
4187110994840,6cyclictest72409-21latency_hist23:15:001
4187110994840,6cyclictest266-21systemd-journal00:04:111
4187110994840,6cyclictest1311-21kworker/u8:1+flush-179:019:40:011
4187110994828,4cyclictest65795-21turbostat22:59:551
4187107994842,4cyclictest64242-21kworker/u8:2+flush-179:023:05:000
4187107994839,7cyclictest266-21systemd-journal00:00:010
4187110994739,6cyclictest31569-21latency_hist21:10:011
4187110994738,8cyclictest72664-21apt-get23:15:101
4187107994742,4cyclictest25236-21kworker/u8:1+flush-179:020:54:540
4187107994740,5cyclictest90544-21kworker/u8:2+flush-179:000:20:010
4187107994740,5cyclictest7717-21kworker/u8:1+flush-179:020:10:010
4187107994740,5cyclictest2915-21latency_hist19:40:000
4187107994739,6cyclictest62847-21/usr/sbin/munin22:45:220
4187107994738,7cyclictest46141-21kworker/u8:2+flush-179:022:05:230
4187110994639,5cyclictest4188626-21kworker/u8:4+flush-179:021:20:171
4187107994640,4cyclictest15617-21kworker/u8:2+flush-179:020:20:170
4187107994637,7cyclictest22049-21kworker/u8:2+events_unbound20:45:240
4187110994441,1cyclictest92098-21latency_hist00:15:011
4187110994434,8cyclictest44819-21apt-get21:50:131
4187107994438,5cyclictest40039-21apt-get21:35:120
4187110994334,7cyclictest510-21rs:main1
4187110994334,7cyclictest266-21systemd-journal21:35:001
418711099430,41cyclictest20424-21turbostat20:39:561
418711099430,41cyclictest20424-21turbostat20:39:561
4187107994338,4cyclictest27024-21kworker/u8:0+events_unbound21:10:230
4187107994337,4cyclictest61056-21kworker/u8:0+flush-179:022:40:250
4187107994332,6cyclictest0-21swapper/021:50:580
4187115994240,1cyclictest0-21swapper/322:58:003
4187110994235,5cyclictest266-21systemd-journal21:16:211
418711099421,37cyclictest4187257-21apt-get19:10:101
4187107994237,4cyclictest2955-21kworker/u8:2+flush-179:019:40:220
4187107994233,7cyclictest19069-21/usr/sbin/munin20:30:240
418711299410,39cyclictest0-21swapper/222:06:592
4187110994134,5cyclictest7919-21/usr/sbin/munin19:55:211
4187110994133,6cyclictest36587-21kworker/u8:1+flush-179:021:45:001
4187107994135,5cyclictest4174491-21kworker/u8:0+flush-179:019:10:210
418710799410,39cyclictest77204-21turbostat23:34:550
4187115994033,6cyclictest0-21swapper/319:52:593
418711599400,38cyclictest15649-21turbostat20:19:593
4187112994037,2cyclictest0-21swapper/222:22:592
4187112994037,2cyclictest0-21swapper/222:22:582
4187110994035,4cyclictest92352-21apt-get00:15:131
418711099401,37cyclictest714-21Xorg20:17:001
4187107994034,5cyclictest46141-21kworker/u8:2+flush-179:022:15:250
4187107994034,4cyclictest86970-21kworker/u8:0+flush-179:000:10:150
4187110993934,3cyclictest714-21Xorg21:02:591
4187110993931,6cyclictest18831-21latency_hist20:30:001
418711099390,37cyclictest714-21Xorg19:21:001
4187107993936,2cyclictest0-21swapper/019:22:000
4187107993934,4cyclictest36587-21kworker/u8:1+flush-179:022:35:040
4187107993932,5cyclictest80682-21kworker/u8:3+flush-179:023:40:170
4187112993835,2cyclictest0-21swapper/221:54:592
418711299380,35cyclictest0-21swapper/223:59:552
4187110993833,4cyclictest266-21systemd-journal19:30:001
418711099381,34cyclictest59167-21apt-get22:35:031
418711099380,37cyclictest714-21Xorg22:02:591
418711099380,36cyclictest0-21swapper/100:32:591
418711099380,2cyclictest714-21Xorg00:24:591
4187107993835,2cyclictest0-21swapper/021:09:590
4187107993832,4cyclictest5634-21proc_pri19:45:240
4187107993832,4cyclictest36587-21kworker/u8:1+events_unbound21:25:150
4187112993734,2cyclictest0-21swapper/220:26:582
418711299370,35cyclictest0-21swapper/223:53:592
418711299370,35cyclictest0-21swapper/221:19:542
418711299370,35cyclictest0-21swapper/200:10:592
4187110993734,2cyclictest714-21Xorg22:25:591
4187110993734,2cyclictest0-21swapper/123:40:591
4187110993729,6cyclictest64174-21kworker/u8:1+flush-179:022:50:231
4187107993730,5cyclictest46141-21kworker/u8:2+events_unbound22:25:230
418710799371,6cyclictest4193889-21apt-get19:30:140
4187115993634,1cyclictest0-21swapper/323:33:003
4187115993634,1cyclictest0-21swapper/322:25:593
4187115993634,1cyclictest0-21swapper/321:33:593
4187115993633,2cyclictest0-21swapper/321:03:003
418711599360,35cyclictest0-21swapper/320:39:553
418711599360,35cyclictest0-21swapper/320:39:553
418711599360,35cyclictest0-21swapper/319:43:593
418711599360,35cyclictest0-21swapper/300:32:583
4187112993633,2cyclictest0-21swapper/223:12:592
4187112993632,2cyclictest0-21swapper/220:13:592
418711299360,1cyclictest0-21swapper/200:06:592
4187110993634,1cyclictest0-21swapper/122:32:591
4187110993631,4cyclictest4174491-21kworker/u8:0+flush-179:019:30:261
4187110993627,7cyclictest64242-21kworker/u8:2+flush-179:023:55:011
4187107993631,4cyclictest36587-21kworker/u8:1+flush-179:021:34:550
4187107993630,5cyclictest64174-21kworker/u8:1+events_unbound22:50:150
4187107993629,4cyclictest9269-21latency_hist20:00:000
4187115993533,1cyclictest0-21swapper/323:40:593
4187115993533,1cyclictest0-21swapper/322:32:593
4187115993532,2cyclictest0-21swapper/323:16:593
418711599350,1cyclictest0-21swapper/322:03:003
418711599350,1cyclictest0-21swapper/321:21:593
4187112993532,2cyclictest0-21swapper/220:03:592
4187112993531,2cyclictest0-21swapper/222:13:592
418711299350,1cyclictest0-21swapper/219:22:582
4187110993532,2cyclictest714-21Xorg23:36:591
4187110993532,2cyclictest714-21Xorg23:01:591
4187112993431,2cyclictest0-21swapper/220:55:582
4187112993430,2cyclictest0-21swapper/221:56:592
4187112993430,2cyclictest0-21swapper/221:56:592
4187110993430,3cyclictest17249-21munin-run20:25:001
4187110993429,4cyclictest48148-21latency_hist22:00:021
4187110993429,4cyclictest48148-21latency_hist22:00:011
4187110993429,4cyclictest27024-21kworker/u8:0+flush-179:021:25:281
418711099341,4cyclictest0-21swapper/121:10:131
418711099340,32cyclictest1-21systemd23:25:001
4187107993431,2cyclictest22061-21true20:40:010
4187107993431,2cyclictest22061-21true20:40:000
4187107993429,3cyclictest42088-21hwlatdetect21:40:180
4577091330,10ptp4l441ktimers/300:30:013
4187115993331,1cyclictest0-21swapper/323:01:593
418711599330,1cyclictest0-21swapper/319:33:593
4187112993331,1cyclictest0-21swapper/220:39:592
4187112993331,1cyclictest0-21swapper/220:39:582
4187112993330,2cyclictest0-21swapper/223:45:592
4187112993330,2cyclictest0-21swapper/222:52:592
4187112993330,2cyclictest0-21swapper/221:39:592
4187112993330,2cyclictest0-21swapper/200:34:552
4187112993330,2cyclictest0-21swapper/200:17:002
4187110993329,3cyclictest53477-21hwlatdetect22:15:171
4187110993326,5cyclictest4188626-21kworker/u8:4+flush-179:019:40:171
4187110993325,5cyclictest0-21swapper/123:06:591
4187110993325,5cyclictest0-21swapper/123:06:591
4187110993325,5cyclictest0-21swapper/100:06:591
4187110993324,8cyclictest0-21swapper/119:15:261
4187107993328,4cyclictest4188626-21kworker/u8:4+flush-179:020:10:160
4187107993326,6cyclictest14306-21http20:15:140
4187115993230,1cyclictest0-21swapper/323:36:593
4187115993230,1cyclictest0-21swapper/319:24:553
4187115993229,2cyclictest0-21swapper/320:46:003
418711599320,29cyclictest0-21swapper/320:30:173
4187112993229,2cyclictest0-21swapper/221:40:582
4187112993229,2cyclictest0-21swapper/200:35:592
4187112993228,2cyclictest0-21swapper/221:28:592
418711299320,30cyclictest0-21swapper/223:16:002
418711299320,2cyclictest0-21swapper/220:20:002
418711299320,29cyclictest0-21swapper/220:44:552
4187110993228,3cyclictest50243-21fschecks_time22:05:171
4187110993226,4cyclictest82487-21apt-get23:45:141
4187110993214,17cyclictest0-21swapper/100:25:171
4187115993128,2cyclictest0-21swapper/300:15:593
4187112993128,2cyclictest0-21swapper/222:58:592
4187107993126,4cyclictest64242-21kworker/u8:2+flush-179:023:39:560
4577091300,7ptp4l441ktimers/322:25:013
4577091300,7ptp4l441ktimers/322:25:003
4577091300,7ptp4l441ktimers/321:00:003
4577091300,7ptp4l441ktimers/320:05:013
4577091300,7ptp4l441ktimers/300:40:013
4577091300,6ptp4l441ktimers/322:55:003
4577091300,6ptp4l441ktimers/322:20:013
4187115993027,2cyclictest0-21swapper/319:15:253
4187115993025,2cyclictest0-21swapper/323:45:143
418711599300,28cyclictest0-21swapper/323:50:133
4187112993027,2cyclictest0-21swapper/222:35:582
4187112993027,2cyclictest0-21swapper/220:05:142
4187112993026,2cyclictest0-21swapper/220:33:002
4187112993024,2cyclictest0-21swapper/222:15:142
418711099300,29cyclictest0-21swapper/120:30:161
4187107993027,2cyclictest0-21swapper/020:03:000
4187107993026,3cyclictest71867-21kworker/u8:0+flush-179:023:10:260
4577091290,6ptp4l441ktimers/323:15:013
4577091290,6ptp4l441ktimers/322:10:013
4577091290,6ptp4l441ktimers/321:39:593
4577091290,6ptp4l441ktimers/321:10:013
4577091290,6ptp4l441ktimers/320:00:003
4577091290,5ptp4l441ktimers/300:10:003
4187115992926,2cyclictest0-21swapper/300:14:583
418711599290,27cyclictest0-21swapper/320:25:133
418711599290,21cyclictest0-21swapper/322:35:043
418711599290,21cyclictest0-21swapper/321:10:133
4187112992926,2cyclictest0-21swapper/219:18:592
418711299290,27cyclictest0-21swapper/223:00:152
418711299290,27cyclictest0-21swapper/222:25:132
418711299290,27cyclictest0-21swapper/221:20:142
418711299290,27cyclictest0-21swapper/219:30:022
418711099291,3cyclictest714-21Xorg20:10:581
4577091280,6ptp4l441ktimers/321:20:003
4577091280,6ptp4l441ktimers/320:14:563
4577091280,6ptp4l441ktimers/319:50:013
4577091280,6ptp4l441ktimers/300:05:003
4577091280,5ptp4l441ktimers/322:50:003
4187115992825,2cyclictest0-21swapper/320:50:143
418711599280,26cyclictest0-21swapper/321:55:023
418711599280,26cyclictest0-21swapper/321:55:023
418711599280,26cyclictest0-21swapper/321:50:133
418711599280,1cyclictest0-21swapper/323:25:153
4187112992825,2cyclictest0-21swapper/221:14:002
4187112992824,2cyclictest0-21swapper/220:21:582
4187112992824,2cyclictest0-21swapper/219:40:132
418711299280,26cyclictest0-21swapper/223:30:122
4187110992822,4cyclictest4188626-21kworker/u8:4+flush-179:020:05:161
4187107992819,6cyclictest0-21swapper/022:11:590
4577091270,6ptp4l441ktimers/321:45:013
4577091270,6ptp4l441ktimers/320:09:563
4577091270,6ptp4l441ktimers/319:39:553
4577091270,6ptp4l441ktimers/300:00:013
4577091270,5ptp4l441ktimers/319:29:563
4187115992725,1cyclictest0-21swapper/319:10:103
418711599270,26cyclictest0-21swapper/321:28:003
4187112992724,2cyclictest0-21swapper/221:47:592
4187112992724,2cyclictest0-21swapper/221:07:592
418711299270,26cyclictest0-21swapper/219:45:592
418711299270,25cyclictest0-21swapper/222:44:002
4187110992722,3cyclictest714-21Xorg22:21:581
4187110992722,3cyclictest714-21Xorg22:21:581
4577091260,5ptp4l441ktimers/323:09:563
4577091260,5ptp4l441ktimers/323:09:563
4577091260,4ptp4l441ktimers/300:25:013
4187112992624,1cyclictest0-21swapper/219:29:592
4187112992623,2cyclictest0-21swapper/223:05:142
4187112992623,2cyclictest0-21swapper/223:05:142
418711299260,2cyclictest0-21swapper/220:46:002
418711299260,2cyclictest0-21swapper/219:52:592
418711299260,24cyclictest0-21swapper/221:01:592
418711299260,24cyclictest0-21swapper/219:10:192
4577091250,4ptp4l441ktimers/323:24:553
4577091250,4ptp4l441ktimers/322:09:553
4577091250,4ptp4l441ktimers/320:44:563
4187112992523,1cyclictest0-21swapper/222:49:582
4187112992523,1cyclictest0-21swapper/200:04:592
4187112992522,2cyclictest0-21swapper/223:38:592
4187112992522,2cyclictest0-21swapper/219:55:592
4187112992522,2cyclictest0-21swapper/219:38:592
4577091240,3ptp4l441ktimers/320:24:553
4187112992422,1cyclictest0-21swapper/221:34:002
4187110992421,2cyclictest0-21swapper/120:43:581
4187112992320,2cyclictest0-21swapper/222:03:592
4187110992214,6cyclictest0-21swapper/120:00:241
4187112992018,1cyclictest0-21swapper/222:34:582
4187110992015,4cyclictest0-21swapper/119:10:021
4187112991916,2cyclictest0-21swapper/200:25:592
231999180,7rtkit-daemon2304-21lightdm-gtk-gre19:05:400
4187112991512,2cyclictest0-21swapper/223:28:592
41871129985,2cyclictest0-21swapper/223:40:142
41871129930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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