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2026-05-12 - 07:56
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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 Tue May 12, 2026 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40237399113101,8cyclictest454179-21kworker/u8:2+flush-179:021:55:011
4023739910795,8cyclictest414978-21latency_hist19:50:021
4023739910195,4cyclictest495879-21kworker/u8:2+flush-179:000:03:591
402373999571,16cyclictest462171-21kworker/u8:1+flush-179:022:25:261
40236999931,89cyclictest501-21systemd-logind00:04:000
402373998978,9cyclictest459234-21apt-get22:05:111
40236999891,83cyclictest438078-21munin-run21:00:010
402369998879,7cyclictest455829-21kworker/u8:0+flush-179:022:25:010
402369998676,7cyclictest457386-21latency_hist22:00:000
402373998576,6cyclictest413390-21latency_hist19:45:011
402373998575,7cyclictest505693-21latency_hist00:30:011
402373998474,7cyclictest405429-21latency_hist19:20:001
402373998470,12cyclictest441222-21apt-get21:09:591
402369998474,7cyclictest449424-21latency_hist21:35:010
402369998474,7cyclictest449424-21latency_hist21:35:000
402369998277,3cyclictest408577-21kworker/u8:1+flush-179:019:45:160
402369998276,4cyclictest408577-21kworker/u8:1+flush-179:019:35:010
402369998275,5cyclictest412470-21kworker/u8:0+flush-179:020:05:170
402369998175,4cyclictest389072-21kworker/u8:2+flush-179:019:25:170
402369998173,6cyclictest495815-40logrotate00:00:010
402373998069,9cyclictest451285-21apt-get21:40:141
402369997971,6cyclictest510-21rs:main0
402369997872,4cyclictest431635-21kworker/u8:1+flush-179:020:50:000
402369997772,4cyclictest419732-21kworker/u8:1+events_unbound20:19:590
402369997460,11cyclictest1213033-21systemd-journal00:20:020
402369997367,5cyclictest449407-21kworker/u8:3+flush-179:021:45:220
402369997366,5cyclictest458979-21latency_hist22:05:000
402369997365,6cyclictest428241-21apt-get20:30:010
402369997266,4cyclictest491037-21kworker/u8:2+flush-179:023:45:170
402373997060,7cyclictest433242-21kworker/u8:2+flush-179:021:25:171
402373997053,16cyclictest0-21swapper/119:58:001
402369997063,5cyclictest434883-21kworker/u8:0+flush-179:021:05:160
402369996962,5cyclictest486061-21kworker/u8:1+events_unbound23:40:010
402369996962,4cyclictest471945-21kworker/u8:2+events_unbound22:55:160
402373996861,5cyclictest495879-21kworker/u8:2+flush-179:000:05:271
402373996859,6cyclictest389072-21kworker/u8:2+flush-179:019:10:241
402373996857,9cyclictest428739-21apt-get20:30:121
402369996760,5cyclictest428203-21kworker/u8:0+events_unbound20:35:010
402369996660,4cyclictest389072-21kworker/u8:2+flush-179:019:10:210
402373996556,6cyclictest473294-21latency_hist22:50:011
402369996559,4cyclictest486061-21kworker/u8:1+flush-179:023:30:140
402369996557,6cyclictest502242-21latency_hist00:20:010
402369996458,4cyclictest443098-21kworker/u8:1+flush-179:021:50:150
402373996353,7cyclictest452851-21/usr/sbin/munin21:45:251
402369996353,8cyclictest444919-21apt-get21:20:130
402369996256,4cyclictest412470-21kworker/u8:0+flush-179:019:40:210
402369996255,5cyclictest462171-21kworker/u8:1+flush-179:022:40:160
402369996253,7cyclictest460565-21latency_hist22:10:020
402373996149,9cyclictest423440-21apt-get20:15:141
402369996156,4cyclictest433242-21kworker/u8:2+flush-179:021:35:220
402369996153,7cyclictest470158-21kworker/u8:0+flush-179:023:15:020
402369996049,8cyclictest471945-21kworker/u8:2+events_unbound22:45:230
402369995955,3cyclictest1-21systemd22:35:000
402369995954,4cyclictest294879-21kworker/u8:0+flush-179:019:15:150
402373995849,7cyclictest454179-21kworker/u8:2+flush-179:022:10:221
402369995852,4cyclictest413434-21kworker/u8:2+flush-179:019:50:230
402369995851,6cyclictest460819-21apt-get22:10:120
402369995851,4cyclictest413434-21kworker/u8:2+flush-179:020:00:220
402373995751,4cyclictest448091-21apt-get21:30:121
402373995751,4cyclictest448091-21apt-get21:30:111
402369995752,4cyclictest470158-21kworker/u8:0+flush-179:000:09:550
402369995751,4cyclictest486061-21kworker/u8:1+flush-179:023:40:160
402369995748,7cyclictest470158-21kworker/u8:0+events_unbound22:55:000
402369995648,6cyclictest508884-21latency_hist00:40:010
402373995549,4cyclictest483097-21latency_hist23:20:011
402373995548,5cyclictest491095-21kworker/u8:3+flush-179:023:55:241
402369995540,12cyclictest1213033-21systemd-journal22:20:000
402373995448,4cyclictest470158-21kworker/u8:0+events_unbound23:15:011
402373995448,4cyclictest470158-21kworker/u8:0+events_unbound23:15:011
402373995446,6cyclictest454179-21kworker/u8:2+events_unbound21:55:231
402373995440,4cyclictest431635-21kworker/u8:1+events_unbound20:55:251
402369995447,5cyclictest411816-21latency_hist19:40:000
402369995445,6cyclictest434883-21kworker/u8:0+flush-179:021:00:230
402373995345,6cyclictest423219-21kworker/u8:3+events_unbound20:30:001
402369995348,4cyclictest470158-21kworker/u8:0+flush-179:023:14:550
402369995348,4cyclictest470158-21kworker/u8:0+flush-179:023:14:550
402369995346,4cyclictest419732-21kworker/u8:1+flush-179:020:20:080
402369995345,6cyclictest462171-21kworker/u8:1+events_unbound22:40:000
402373995246,4cyclictest1213033-21systemd-journal20:02:191
402373995144,5cyclictest443098-21kworker/u8:1+flush-179:021:20:241
402373995138,10cyclictest1213033-21systemd-journal23:25:001
402373995045,4cyclictest468507-21kworker/u8:2+events_unbound22:35:001
402373995043,5cyclictest500632-21kworker/u8:1+flush-179:000:20:021
402373995042,6cyclictest504141-21kworker/u8:3+flush-179:000:30:251
402373995041,7cyclictest504141-21kworker/u8:3+flush-179:000:35:221
402373995041,6cyclictest468507-21kworker/u8:2+flush-179:022:35:251
402369995043,5cyclictest433242-21kworker/u8:2+flush-179:021:10:260
402373994943,4cyclictest1213033-21systemd-journal19:52:151
402373994940,7cyclictest492880-21/usr/sbin/munin23:50:231
402373994935,12cyclictest486061-21kworker/u8:1+events_unbound23:35:011
402369994943,5cyclictest433242-21kworker/u8:2+flush-179:021:25:250
402369994941,6cyclictest476521-21kworker/u8:3+events_unbound23:05:000
4577091480,13ptp4l61490irq/134-eno1-TxRx-019:10:003
402373994841,5cyclictest413434-21kworker/u8:2+flush-179:020:10:011
402369994844,3cyclictest439671-21kworker/u8:3+flush-179:021:15:180
402369994838,7cyclictest389072-21kworker/u8:2+flush-179:019:20:190
402373994743,3cyclictest431716-21systemd-run20:40:011
402373994742,4cyclictest389072-21kworker/u8:2+flush-179:019:20:211
40237399471,34cyclictest502263-21apt-get00:20:021
402373994640,5cyclictest462171-21kworker/u8:1+flush-179:022:40:201
402373994640,4cyclictest470158-21kworker/u8:0+flush-179:023:50:001
402373994640,4cyclictest402264-21kworker/u8:3+flush-179:019:30:011
402369994641,4cyclictest433242-21kworker/u8:2+flush-179:020:50:210
402369994640,4cyclictest483364-21apt-get23:20:100
402373994437,5cyclictest443098-21kworker/u8:1+events_unbound21:40:001
402369994438,5cyclictest428203-21kworker/u8:0+events_unbound20:35:250
402369994438,4cyclictest462171-21kworker/u8:1+flush-179:022:25:270
40237699420,41cyclictest0-21swapper/320:12:593
40237699420,3cyclictest505703-21turbostat00:30:003
402373994237,4cyclictest476521-21kworker/u8:3+flush-179:023:00:221
402369994234,6cyclictest470158-21kworker/u8:0+flush-179:023:25:250
40237699410,39cyclictest481250-21turbostat23:15:003
40237699410,39cyclictest481250-21turbostat23:15:003
402373994133,6cyclictest1213033-21systemd-journal20:45:361
40237399411,38cyclictest714-21Xorg21:15:581
402369994136,4cyclictest484-21dbus-daemon19:59:590
402369994132,7cyclictest500652-21latency_hist00:15:000
40237699400,39cyclictest444661-21turbostat21:20:013
402373994035,3cyclictest714-21Xorg20:08:591
402373994033,5cyclictest510-21rs:main1
402373994030,8cyclictest473549-21apt-get22:50:131
40237399400,3cyclictest489458-21turbostat23:44:561
402369994035,4cyclictest495879-21kworker/u8:2+flush-179:000:25:170
402369994035,4cyclictest428203-21kworker/u8:0+events_unbound20:40:160
40237699390,38cyclictest507298-21turbostat00:35:003
40237699390,38cyclictest428244-21turbostat20:30:013
402374993936,2cyclictest0-21swapper/200:39:542
402373993936,2cyclictest0-21swapper/119:38:591
402373993933,5cyclictest476521-21kworker/u8:3+flush-179:023:05:161
402373993933,5cyclictest434883-21kworker/u8:0+flush-179:021:00:241
40237399390,2cyclictest408849-21/usr/sbin/munin19:30:111
402369993933,5cyclictest476521-21kworker/u8:3+events_unbound23:05:250
402376993833,4cyclictest455787-21turbostat21:55:013
402376993832,5cyclictest431674-21turbostat20:40:003
40237699380,4cyclictest452618-21turbostat21:45:003
40237699380,37cyclictest419770-21turbostat20:05:003
402374993836,1cyclictest0-21swapper/223:13:592
402374993836,1cyclictest0-21swapper/223:13:592
402373993834,3cyclictest714-21Xorg20:23:001
402373993833,4cyclictest500632-21kworker/u8:1+flush-179:000:14:551
402373993832,4cyclictest455829-21kworker/u8:0+flush-179:022:15:241
402374993735,1cyclictest0-21swapper/221:10:002
40237499370,35cyclictest0-21swapper/223:32:592
40237499370,35cyclictest0-21swapper/223:03:592
40237499370,35cyclictest0-21swapper/221:19:592
40237499370,35cyclictest0-21swapper/220:03:582
40237499370,35cyclictest0-21swapper/219:44:592
40237499370,2cyclictest0-21swapper/220:29:552
40237499370,2cyclictest0-21swapper/219:15:592
402369993732,3cyclictest470158-21kworker/u8:0+events_unbound23:50:240
402376993634,1cyclictest0-21swapper/322:14:553
402376993634,1cyclictest0-21swapper/320:57:593
402376993634,1cyclictest0-21swapper/319:36:593
402376993632,3cyclictest476502-21turbostat23:04:553
402376993630,5cyclictest434852-21turbostat20:50:003
40237699360,35cyclictest0-21swapper/323:49:593
40237699360,35cyclictest0-21swapper/319:41:593
40237699360,35cyclictest0-21swapper/319:14:553
402374993633,2cyclictest0-21swapper/222:26:582
402373993631,4cyclictest459026-21latency_hist22:05:011
402376993533,1cyclictest0-21swapper/323:39:593
402376993533,1cyclictest0-21swapper/321:14:583
402376993533,1cyclictest0-21swapper/300:05:593
402374993532,2cyclictest0-21swapper/223:15:592
402374993532,2cyclictest0-21swapper/223:07:592
402373993529,4cyclictest281ktimers/122:20:121
4577091340,4ptp4l441ktimers/323:55:013
402376993432,1cyclictest0-21swapper/322:53:593
402376993432,1cyclictest0-21swapper/319:30:003
402376993427,5cyclictest470107-21turbostat22:40:003
40237699340,1cyclictest0-21swapper/319:34:563
402374993431,2cyclictest0-21swapper/200:16:582
402373993431,2cyclictest714-21Xorg20:51:001
402373993428,5cyclictest428203-21kworker/u8:0+events_unbound20:40:231
40236999341,31cyclictest421782-21date20:10:010
40236999340,32cyclictest714-21Xorg21:43:580
402376993331,1cyclictest0-21swapper/321:05:593
402376993331,1cyclictest0-21swapper/320:42:003
402376993331,1cyclictest0-21swapper/300:00:593
40237499333,28cyclictest0-21swapper/220:55:132
402374993330,2cyclictest0-21swapper/221:52:592
402376993230,1cyclictest0-21swapper/323:26:593
402376993230,1cyclictest0-21swapper/322:09:563
402374993229,2cyclictest0-21swapper/223:56:592
402376993129,1cyclictest0-21swapper/323:18:593
402376993128,2cyclictest0-21swapper/320:20:593
402376993126,4cyclictest451033-21turbostat21:40:003
402373993123,6cyclictest402218-21latency_hist19:10:021
402376993028,1cyclictest0-21swapper/322:15:593
402376993028,1cyclictest0-21swapper/320:19:553
402376993027,2cyclictest0-21swapper/322:02:593
40237699300,29cyclictest438028-21turbostat21:04:563
40237699300,29cyclictest0-21swapper/323:55:593
40237499300,2cyclictest0-21swapper/200:20:142
40237499300,29cyclictest0-21swapper/222:04:592
402373993024,5cyclictest470158-21kworker/u8:0+events_unbound23:25:241
402376992927,1cyclictest0-21swapper/321:25:133
402376992927,1cyclictest0-21swapper/319:50:143
402376992927,1cyclictest0-21swapper/319:24:553
402376992926,2cyclictest0-21swapper/300:15:133
40237699290,28cyclictest0-21swapper/322:55:133
40237699290,28cyclictest0-21swapper/321:30:133
40237699290,28cyclictest0-21swapper/321:30:123
40237699290,1cyclictest0-21swapper/319:55:133
402374992927,1cyclictest0-21swapper/223:25:142
402374992926,2cyclictest0-21swapper/221:55:142
402374992926,2cyclictest0-21swapper/220:35:132
402374992926,2cyclictest0-21swapper/219:30:592
40237499290,2cyclictest0-21swapper/221:40:152
40237499290,28cyclictest0-21swapper/222:05:132
40237499290,27cyclictest0-21swapper/223:45:142
40237499290,27cyclictest0-21swapper/223:22:592
40237499290,27cyclictest0-21swapper/222:40:132
40237499290,27cyclictest0-21swapper/222:15:122
40237499290,27cyclictest0-21swapper/220:50:002
40237499290,27cyclictest0-21swapper/220:10:032
40237499290,27cyclictest0-21swapper/219:55:142
402376992826,1cyclictest0-21swapper/323:40:133
402376992826,1cyclictest0-21swapper/323:10:003
402376992826,1cyclictest0-21swapper/321:55:593
402376992826,1cyclictest0-21swapper/300:14:543
402376992825,2cyclictest0-21swapper/323:30:133
402376992825,2cyclictest0-21swapper/322:25:163
402376992824,3cyclictest468530-21sleep22:35:003
402376992822,5cyclictest421358-21turbostat20:10:013
40237699280,26cyclictest0-21swapper/320:30:023
40237699280,26cyclictest0-21swapper/319:45:143
402374992825,2cyclictest0-21swapper/221:31:592
402374992825,2cyclictest0-21swapper/221:31:592
402374992825,2cyclictest0-21swapper/219:20:122
40237499280,2cyclictest0-21swapper/221:10:002
40237499280,27cyclictest0-21swapper/223:50:132
402373992826,1cyclictest488121-21apt-get23:35:121
402373992821,5cyclictest470158-21kworker/u8:0+flush-179:022:55:221
40237699270,1cyclictest0-21swapper/322:46:003
40237699270,1cyclictest0-21swapper/321:20:143
40237499272,23cyclictest0-21swapper/200:29:592
4577091260,4ptp4l441ktimers/320:55:003
402376992624,1cyclictest0-21swapper/321:47:593
402374992623,2cyclictest0-21swapper/221:27:002
40237499260,2cyclictest351rcuc/200:09:592
40237499260,24cyclictest0-21swapper/219:25:592
40237499260,24cyclictest0-21swapper/200:12:592
4577091250,4ptp4l441ktimers/322:45:013
4577091250,4ptp4l441ktimers/300:39:553
402376992523,1cyclictest0-21swapper/319:17:593
40237699250,24cyclictest0-21swapper/300:20:043
402374992523,1cyclictest0-21swapper/221:00:132
402374992523,1cyclictest0-21swapper/220:20:002
402374992523,1cyclictest0-21swapper/219:54:002
402374992522,2cyclictest0-21swapper/222:20:112
40237499250,2cyclictest0-21swapper/222:32:002
40237499250,2cyclictest0-21swapper/220:08:002
40237499250,1cyclictest0-21swapper/220:24:592
4577091240,4ptp4l441ktimers/323:24:553
402376992422,1cyclictest0-21swapper/322:23:593
402374992320,2cyclictest0-21swapper/200:00:122
402374992320,1cyclictest0-21swapper/221:49:552
402374992319,2cyclictest0-21swapper/220:44:552
402374992119,1cyclictest0-21swapper/220:30:592
402374992118,2cyclictest0-21swapper/223:41:582
402374992116,3cyclictest0-21swapper/219:45:582
402374992018,1cyclictest0-21swapper/222:10:592
402374992017,2cyclictest0-21swapper/219:11:592
402374992017,2cyclictest0-21swapper/200:30:592
402374991917,1cyclictest0-21swapper/220:53:002
402374991614,1cyclictest0-21swapper/222:46:592
402374991613,2cyclictest351rcuc/222:57:262
402374991613,2cyclictest0-21swapper/223:40:012
402374991512,2cyclictest351rcuc/222:38:112
402374991512,2cyclictest0-21swapper/219:35:592
402374991411,2cyclictest351rcuc/221:20:312
40236999138,3cyclictest0-21swapper/019:10:010
40237499129,2cyclictest351rcuc/222:53:562
40237499129,2cyclictest351rcuc/221:35:052
4023749932,1cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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