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2026-04-26 - 19:07
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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 Apr 26, 2026 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
366124299119110,7cyclictest3701992-21latency_hist09:15:010
36612439910797,7cyclictest3768116-21latency_hist12:40:011
36612439910393,7cyclictest3719511-21latency_hist10:10:001
36612439910392,7cyclictest3661088-21kworker/u8:0+flush-179:007:39:591
3661243999482,9cyclictest3664339-21apt-get07:20:021
3661242999487,5cyclictest3741014-21kworker/u8:1+flush-179:011:15:250
3661242999286,5cyclictest3751950-21kworker/u8:0+flush-179:011:50:230
3661242999184,4cyclictest3684273-21kworker/u8:2+flush-179:009:30:010
3661242999183,5cyclictest3668056-21kworker/u8:3+events_unbound07:50:150
3661243999078,9cyclictest3716878-21diskstats10:00:141
3661242998781,5cyclictest3667678-21kworker/u8:1+events_unbound07:35:000
3661242998781,5cyclictest3667678-21kworker/u8:1+events_unbound07:35:000
3661242998777,6cyclictest3729043-21kworker/u8:2+flush-179:011:20:200
3661243998675,7cyclictest3684273-21kworker/u8:2+flush-179:008:55:001
3661243998672,10cyclictest3729043-21kworker/u8:2+flush-179:011:30:011
3661242998678,4cyclictest3693814-21kworker/u8:3+flush-179:009:05:210
3661242998678,4cyclictest3693814-21kworker/u8:3+flush-179:009:05:200
3661243998577,5cyclictest3727449-21kworker/u8:0+flush-179:010:35:011
3661242998579,4cyclictest3679430-21kworker/u8:0+flush-179:008:20:150
3661242998478,4cyclictest3656533-21kworker/u8:1+events_unbound07:15:010
3661242998476,6cyclictest3692430-21kworker/u8:1+flush-179:008:55:260
3661243998363,18cyclictest3684273-21kworker/u8:2+flush-179:009:00:001
3661242998377,4cyclictest3710006-21kworker/u8:3+flush-179:009:50:250
3661242998376,5cyclictest3661088-21kworker/u8:0+events_unbound07:15:250
3661242998274,6cyclictest3723753-21kworker/u8:2+flush-179:010:20:220
3661242998274,4cyclictest3679430-21kworker/u8:0+events_unbound08:40:150
3661242998173,5cyclictest3729043-21kworker/u8:2+flush-179:011:10:140
3661242998172,7cyclictest3703585-21latency_hist09:20:000
3661243998070,8cyclictest3714706-21kworker/u8:0+events_unbound09:55:001
3661242998075,4cyclictest3708347-21kworker/u8:1+flush-179:009:35:250
3661242998074,4cyclictest3684273-21kworker/u8:2+events_unbound09:30:220
3661242998072,6cyclictest3710006-21kworker/u8:3+events_unbound09:55:240
3661242997969,7cyclictest3763370-21kworker/u8:2+flush-179:012:30:200
3661242997969,7cyclictest3676494-21/usr/sbin/munin07:55:240
3661242997871,4cyclictest3684273-21kworker/u8:2+flush-179:009:00:140
3661242997870,6cyclictest3747148-21latency_hist11:35:020
3661242997870,6cyclictest3684273-21kworker/u8:2+flush-179:008:30:140
3661243997664,11cyclictest3729043-21kworker/u8:2+flush-179:010:59:551
3661242997670,4cyclictest3716293-21kworker/u8:1+events_unbound10:05:230
3661242997669,4cyclictest3693814-21kworker/u8:3+flush-179:009:20:260
3661242997668,6cyclictest3732301-21kworker/u8:3+flush-179:010:50:000
3661243997564,9cyclictest3674706-21kworker/u8:2+events_unbound08:00:001
3661242997567,5cyclictest3716293-21kworker/u8:1+flush-179:010:10:210
3661243997466,6cyclictest3761753-21latency_hist12:20:011
3661242997469,3cyclictest3737842-21kworker/u8:1+events_unbound11:05:200
3661242997469,3cyclictest3708347-21kworker/u8:1+flush-179:009:45:260
3661242997468,4cyclictest3763370-21kworker/u8:2+flush-179:012:35:230
3661243997366,5cyclictest3711557-21latency_hist09:45:001
3661243997365,6cyclictest3682626-21latency_hist08:15:001
3661242997367,5cyclictest3661088-21kworker/u8:0+events_unbound07:40:020
3661242997365,6cyclictest3751927-21latency_hist11:50:010
3661242997361,9cyclictest1213033-21systemd-journal11:40:010
3661242997361,9cyclictest1213033-21systemd-journal11:40:010
3661243997265,5cyclictest3679430-21kworker/u8:0+flush-179:008:20:171
3661242997166,4cyclictest3751972-21kworker/u8:3+flush-179:012:25:250
3661242997063,5cyclictest3727449-21kworker/u8:0+events_unbound10:35:270
3661242997063,4cyclictest3729043-21kworker/u8:2+events_unbound11:00:160
3661242996962,5cyclictest3668056-21kworker/u8:3+flush-179:008:00:230
3661242996962,4cyclictest3668056-21kworker/u8:3+events_unbound07:50:010
3661242996960,6cyclictest3732301-21kworker/u8:3+flush-179:010:55:210
3661242996960,6cyclictest3725887-21latency_hist10:30:000
366124399681,65cyclictest1-21systemd11:40:011
366124399681,65cyclictest1-21systemd11:40:011
3661242996863,3cyclictest3716293-21kworker/u8:1+flush-179:010:15:250
3661243996758,7cyclictest1213033-21systemd-journal09:11:311
3661242996758,6cyclictest3668056-21kworker/u8:3+events_unbound08:05:190
3661242996757,8cyclictest3686079-21apt-get08:25:130
3661242996756,5cyclictest3729043-21kworker/u8:2+events_unbound12:10:190
3661243996657,7cyclictest3668056-21kworker/u8:3+flush-179:008:05:001
3661243996559,4cyclictest3729043-21kworker/u8:2+flush-179:011:25:001
3661243996554,8cyclictest1213033-21systemd-journal11:45:001
3661243996457,5cyclictest3708347-21kworker/u8:1+events_unbound09:35:011
3661242996452,9cyclictest3666175-21latency_hist07:25:010
3661243996359,2cyclictest3710006-21kworker/u8:3+events_unbound10:00:021
3661243996356,5cyclictest3716293-21kworker/u8:1+events_unbound10:10:251
3661242996358,4cyclictest3751972-21kworker/u8:3+flush-179:011:55:140
3661243996253,7cyclictest3716293-21kworker/u8:1+events_unbound10:20:001
3661243996253,6cyclictest3709965-21latency_hist09:40:011
3661242996257,3cyclictest3679430-21kworker/u8:0+events_unbound08:15:140
3661243996154,4cyclictest3692430-21kworker/u8:1+events_unbound08:50:001
3661243996154,4cyclictest3692430-21kworker/u8:1+events_unbound08:49:591
3661243996153,6cyclictest3668056-21kworker/u8:3+flush-179:007:40:261
3661242996156,4cyclictest3693814-21kworker/u8:3+flush-179:008:50:260
3661243996052,6cyclictest3729043-21kworker/u8:2+flush-179:011:04:551
3661242996054,5cyclictest3723753-21kworker/u8:2+flush-179:010:30:140
3661242996052,6cyclictest3714706-21kworker/u8:0+flush-179:010:00:190
3661242995955,3cyclictest3671185-21users07:35:250
3661243995752,4cyclictest3760184-21kworker/u8:0+flush-179:012:20:171
3661243995750,5cyclictest3667678-21kworker/u8:1+flush-179:007:30:011
3661242995750,5cyclictest3729043-21kworker/u8:2+flush-179:012:00:200
3661242995750,5cyclictest3729043-21kworker/u8:2+flush-179:012:00:200
3661243995653,2cyclictest0-21swapper/107:31:591
3661243995653,2cyclictest0-21swapper/107:31:591
3661243995648,6cyclictest3668056-21kworker/u8:3+flush-179:008:05:241
3661243995647,7cyclictest3706774-21latency_hist09:30:011
3661242995651,4cyclictest3751972-21kworker/u8:3+events_unbound12:15:230
3661242995651,4cyclictest3661088-21kworker/u8:0+events_unbound07:25:160
3661242995551,3cyclictest3729043-21kworker/u8:2+flush-179:011:40:200
3661242995548,5cyclictest3755157-21kworker/u8:1+events_unbound12:05:250
3661243995447,5cyclictest3729043-21kworker/u8:2+flush-179:011:45:151
3661243995447,5cyclictest3661088-21kworker/u8:0+flush-179:007:50:011
3661243995445,6cyclictest3729043-21kworker/u8:2+flush-179:011:35:001
3661243995342,8cyclictest3740775-21latency_hist11:15:001
3661242995348,4cyclictest3743952-21kworker/u8:0+events_unbound11:25:240
3661248995248,2cyclictest0-21swapper/207:31:592
3661248995248,2cyclictest0-21swapper/207:31:592
3661243995245,5cyclictest3755157-21kworker/u8:1+flush-179:012:05:161
3661243995145,4cyclictest3742376-21latency_hist11:20:011
3661243995140,8cyclictest3661088-21kworker/u8:0+flush-179:007:20:001
3661243995127,6cyclictest3755125-21latency_hist12:00:011
366124299510,49cyclictest1-21systemd12:25:010
3661243995043,5cyclictest3668056-21kworker/u8:3+events_unbound08:25:151
3661243995041,6cyclictest3727449-21kworker/u8:0+events_unbound10:35:161
3661242995040,7cyclictest3734150-21latency_hist10:55:000
3661243994942,5cyclictest3668056-21kworker/u8:3+events_unbound07:50:261
3661242994944,4cyclictest3729043-21kworker/u8:2+events_unbound10:40:220
4577091480,12ptp4l61490irq/134-eno1-TxRx-007:09:553
3661243994736,8cyclictest510-21rs:main1
3661243994736,8cyclictest510-21rs:main1
3661243994736,8cyclictest510-21rs:main1
3661243994640,4cyclictest3751972-21kworker/u8:3+flush-179:012:25:201
3661243994540,3cyclictest3703603-21systemctl09:20:001
3661242994540,4cyclictest3684273-21kworker/u8:2+flush-179:008:35:150
3661243994434,8cyclictest3729334-21apt-get10:40:101
366124399441,38cyclictest714-21Xorg07:11:591
3661242994338,4cyclictest3679430-21kworker/u8:0+events_unbound08:45:200
3661242994338,4cyclictest3679430-21kworker/u8:0+events_unbound08:45:190
3661242994338,4cyclictest3679430-21kworker/u8:0+events_unbound08:10:250
3661243994234,6cyclictest3710006-21kworker/u8:3+flush-179:009:45:151
3661249994138,2cyclictest0-21swapper/308:47:003
3661249994138,2cyclictest0-21swapper/308:46:593
3661243994136,4cyclictest3679430-21kworker/u8:0+events_unbound08:40:171
3661243994135,4cyclictest3751972-21kworker/u8:3+events_unbound12:10:151
3661243994134,5cyclictest3763370-21kworker/u8:2+events_unbound12:30:151
3661243994131,5cyclictest0-21swapper/111:05:591
3661249994038,1cyclictest0-21swapper/311:42:593
3661249994038,1cyclictest0-21swapper/310:02:003
3661249994035,4cyclictest3669621-21turbostat07:35:003
3661249994035,4cyclictest3669621-21turbostat07:35:003
3661248994037,2cyclictest0-21swapper/210:29:002
366124899400,37cyclictest0-21swapper/212:36:592
3661243994035,3cyclictest3756748-21systemd-run12:05:001
3661243994035,3cyclictest3756748-21systemd-run12:05:001
3661242994035,4cyclictest3708347-21kworker/u8:1+events_unbound09:41:330
3661249993937,1cyclictest0-21swapper/308:02:583
366124999390,38cyclictest3756716-21turbostat12:05:003
366124999390,38cyclictest3756716-21turbostat12:05:003
366124999390,37cyclictest3739206-21turbostat11:10:003
366124399390,38cyclictest3730677-21turbostat10:49:551
3661248993835,2cyclictest0-21swapper/211:03:592
3661248993734,2cyclictest0-21swapper/208:37:002
366124899370,35cyclictest0-21swapper/210:54:592
366124899370,2cyclictest0-21swapper/208:18:002
3661243993734,2cyclictest0-21swapper/109:24:591
3661249993634,1cyclictest0-21swapper/312:34:553
3661249993634,1cyclictest0-21swapper/312:10:593
3661249993634,1cyclictest0-21swapper/310:40:003
366124999360,35cyclictest0-21swapper/310:54:553
366124999360,35cyclictest0-21swapper/308:14:593
366124999360,35cyclictest0-21swapper/307:44:543
3661248993633,2cyclictest0-21swapper/211:59:592
3661248993633,2cyclictest0-21swapper/207:58:592
366124899360,2cyclictest0-21swapper/211:46:592
366124899360,2cyclictest0-21swapper/207:18:582
366124399362,30cyclictest3724548-21apt-get10:25:141
3661249993533,1cyclictest0-21swapper/311:19:553
3661249993533,1cyclictest0-21swapper/307:13:593
366124999350,1cyclictest0-21swapper/312:09:553
3661248993533,1cyclictest0-21swapper/207:14:592
3661248993532,2cyclictest0-21swapper/208:50:592
3661243993530,4cyclictest3689013-21turbostat08:39:551
3661249993432,1cyclictest0-21swapper/309:09:593
3661249993432,1cyclictest0-21swapper/309:09:583
3661249993432,1cyclictest0-21swapper/309:04:003
3661243993428,5cyclictest3679430-21kworker/u8:0+flush-179:008:15:181
3661249993331,1cyclictest0-21swapper/310:44:553
3661249993331,1cyclictest0-21swapper/308:33:593
3661249993331,1cyclictest0-21swapper/307:29:583
3661249993327,5cyclictest3719520-21turbostat10:10:003
3661248993330,2cyclictest0-21swapper/211:14:592
3661248993330,2cyclictest0-21swapper/211:07:592
3661243993330,2cyclictest0-21swapper/109:00:591
366124399330,1cyclictest0-21swapper/110:22:581
3661249993227,4cyclictest3748761-21turbostat11:40:013
3661249993227,4cyclictest3748761-21turbostat11:40:013
3661248993230,1cyclictest0-21swapper/209:24:582
3661248993229,2cyclictest0-21swapper/210:39:552
3661249993129,1cyclictest0-21swapper/309:36:583
3661249993129,1cyclictest0-21swapper/309:30:593
3661248993128,2cyclictest0-21swapper/210:13:592
3661243993126,3cyclictest3752620-21hwlatdetect11:50:161
3661249993027,2cyclictest0-21swapper/307:39:593
3661248993028,1cyclictest0-21swapper/209:05:012
3661248993027,2cyclictest0-21swapper/210:05:152
3661248993027,2cyclictest0-21swapper/209:56:592
3661248993027,2cyclictest0-21swapper/208:22:582
366124899300,29cyclictest0-21swapper/210:15:142
366124899300,27cyclictest0-21swapper/211:25:132
366124899300,27cyclictest0-21swapper/211:20:142
366124899300,27cyclictest0-21swapper/210:45:142
366124899300,27cyclictest0-21swapper/207:40:032
366124899300,27cyclictest0-21swapper/207:20:022
366124899300,26cyclictest0-21swapper/208:00:132
3661243993024,4cyclictest3689043-21latency_hist08:35:001
4577091290,7ptp4l441ktimers/312:30:003
4577091290,7ptp4l441ktimers/310:20:003
4577091290,7ptp4l441ktimers/309:00:013
4577091290,7ptp4l441ktimers/308:30:013
4577091290,7ptp4l441ktimers/308:20:003
4577091290,6ptp4l441ktimers/308:10:003
366124999290,28cyclictest0-21swapper/310:10:133
366124999290,27cyclictest0-21swapper/309:45:153
3661248992926,2cyclictest0-21swapper/209:47:002
3661248992926,2cyclictest0-21swapper/209:18:002
366124899290,28cyclictest0-21swapper/211:30:142
366124899290,27cyclictest0-21swapper/212:25:132
366124899290,27cyclictest0-21swapper/212:20:142
366124899290,27cyclictest0-21swapper/211:15:592
366124899290,27cyclictest0-21swapper/209:40:132
366124899290,27cyclictest0-21swapper/208:29:592
366124899290,24cyclictest0-21swapper/212:10:032
366124899290,19cyclictest0-21swapper/209:39:592
4577091280,7ptp4l441ktimers/312:39:593
4577091280,6ptp4l61490irq/134-eno1-TxRx-011:25:003
4577091280,6ptp4l441ktimers/311:15:003
4577091280,6ptp4l441ktimers/310:30:003
4577091280,6ptp4l441ktimers/309:20:003
4577091280,6ptp4l441ktimers/308:40:003
366124999280,27cyclictest0-21swapper/311:50:133
366124999280,27cyclictest0-21swapper/308:20:143
3661248992825,2cyclictest0-21swapper/210:58:592
3661248992825,2cyclictest0-21swapper/210:00:122
3661248992824,2cyclictest0-21swapper/210:42:592
366124899280,2cyclictest0-21swapper/209:30:132
366124899280,26cyclictest0-21swapper/207:25:152
4577091270,7ptp4l61490irq/134-eno1-TxRx-010:50:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-007:50:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-007:25:013
4577091270,5ptp4l61490irq/134-eno1-TxRx-012:00:013
4577091270,5ptp4l441ktimers/312:24:563
4577091270,5ptp4l441ktimers/309:29:563
4577091270,5ptp4l441ktimers/307:55:013
3661249992725,1cyclictest0-21swapper/309:50:583
3661249992725,1cyclictest0-21swapper/309:43:003
3661249992724,2cyclictest0-21swapper/311:32:583
366124999270,26cyclictest0-21swapper/310:30:133
366124999270,26cyclictest0-21swapper/309:15:003
366124999270,26cyclictest0-21swapper/307:15:143
366124999270,1cyclictest0-21swapper/310:55:143
366124999270,1cyclictest0-21swapper/307:55:133
366124899270,25cyclictest0-21swapper/208:35:002
366124899270,24cyclictest0-21swapper/212:15:132
366124899270,24cyclictest0-21swapper/208:50:002
366124899270,24cyclictest0-21swapper/208:50:002
4577091260,5ptp4l61490irq/134-eno1-TxRx-011:05:013
4577091260,5ptp4l441ktimers/311:49:553
4577091260,5ptp4l441ktimers/310:24:563
4577091260,5ptp4l441ktimers/308:44:563
3661249992624,1cyclictest0-21swapper/311:25:593
3661249992623,2cyclictest0-21swapper/308:55:003
366124999260,25cyclictest0-21swapper/309:55:593
3661248992623,2cyclictest0-21swapper/210:20:582
3661248992623,2cyclictest0-21swapper/209:06:002
3661248992623,2cyclictest0-21swapper/209:05:592
3661248992623,2cyclictest0-21swapper/208:40:582
3661248992623,2cyclictest0-21swapper/207:54:562
366124899260,2cyclictest0-21swapper/209:50:152
366124899260,24cyclictest0-21swapper/212:00:152
366124899260,24cyclictest0-21swapper/212:00:152
366124899260,24cyclictest0-21swapper/208:06:592
4577091250,4ptp4l61490irq/134-eno1-TxRx-012:19:553
3661249992523,1cyclictest0-21swapper/309:24:583
3661248992523,1cyclictest0-21swapper/209:00:002
3661248992522,2cyclictest0-21swapper/209:10:592
3661248992420,2cyclictest0-21swapper/212:05:592
3661248992320,2cyclictest0-21swapper/211:52:592
231999210,12rtkit-daemon495-21gpm07:06:550
3661248992018,1cyclictest0-21swapper/207:40:002
3661248991917,1cyclictest0-21swapper/211:44:592
3661248991916,2cyclictest0-21swapper/210:34:582
3661243991911,6cyclictest3661106-21latency_hist07:10:021
3661248991613,2cyclictest0-21swapper/208:13:592
3661248991512,2cyclictest0-21swapper/212:30:132
366124899129,2cyclictest0-21swapper/211:38:592
366124899129,2cyclictest0-21swapper/211:38:592
366124899129,2cyclictest0-21swapper/209:28:592
36612489970,2cyclictest0-21swapper/207:47:042
36612489930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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