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2026-04-23 - 15:23
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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 Thu Apr 23, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
369415099125115,8cyclictest3714327-21kworker/u8:1+flush-179:008:20:010
369415099125115,8cyclictest3714327-21kworker/u8:1+flush-179:008:20:010
36941509910796,8cyclictest3737535-21kworker/u8:1+flush-179:009:30:010
36941529910595,6cyclictest3699035-21kworker/u8:0+flush-179:007:40:001
3694152999679,15cyclictest3714327-21kworker/u8:1+flush-179:008:15:251
3694152999679,15cyclictest3714327-21kworker/u8:1+flush-179:008:15:251
3694152999386,5cyclictest3776518-21kworker/u8:0+flush-179:011:40:151
3694150999280,10cyclictest3755315-21apt-get10:20:010
3694150999280,10cyclictest3755315-21apt-get10:20:010
3694152999181,7cyclictest3742316-21latency_hist09:40:021
3694152998174,5cyclictest3739175-21kworker/u8:3+flush-179:010:05:241
3694150998070,8cyclictest3690704-21kworker/u8:2+flush-179:007:25:010
3694150997872,4cyclictest3693414-21kworker/u8:3+flush-179:007:40:160
3694152997768,7cyclictest1213033-21systemd-journal10:30:001
3694150997770,5cyclictest3765366-21kworker/u8:2+events_unbound11:35:140
3694150997670,4cyclictest3699035-21kworker/u8:0+flush-179:007:30:000
3694150997667,6cyclictest3765387-21latency_hist10:50:020
3694152997567,6cyclictest3789276-21latency_hist12:05:001
3694152997461,11cyclictest1213033-21systemd-journal10:04:591
3694152997458,14cyclictest3737535-21kworker/u8:1+flush-179:009:30:261
3694152997365,5cyclictest3699035-21kworker/u8:0+flush-179:007:45:141
3694150997367,4cyclictest3731158-21kworker/u8:2+flush-179:009:20:170
3694150997366,5cyclictest3726635-21kworker/u8:0+flush-179:009:00:200
3694152997261,9cyclictest1213033-21systemd-journal09:20:001
3694152997163,6cyclictest3776518-21kworker/u8:0+flush-179:011:30:001
3694152997162,6cyclictest3723194-21kworker/u8:0+flush-179:008:40:221
3694150997163,6cyclictest3765366-21kworker/u8:2+events_unbound11:15:230
3694152997045,7cyclictest3721617-21latency_hist08:35:011
3694150996962,5cyclictest3720009-21kworker/u8:2+events_unbound08:50:010
3694152996861,5cyclictest3727060-21kworker/u8:3+flush-179:008:55:151
3694152996855,10cyclictest1213033-21systemd-journal11:55:011
3694152996762,4cyclictest3690704-21kworker/u8:2+flush-179:007:15:261
3694152996658,5cyclictest3790908-21kworker/u8:1+flush-179:012:15:221
3694152996653,10cyclictest3748706-21apt-get10:00:011
3694152996653,10cyclictest3748706-21apt-get10:00:011
3694150996658,6cyclictest3727060-21kworker/u8:3+flush-179:008:50:240
3694152996552,5cyclictest3739175-21kworker/u8:3+flush-179:009:49:591
3694150996562,2cyclictest0-21swapper/007:18:590
3694150996561,3cyclictest3699035-21kworker/u8:0+flush-179:007:49:550
3694150996560,4cyclictest3752383-21kworker/u8:1+flush-179:010:30:210
3694150996556,7cyclictest3771994-21/usr/sbin/munin11:10:220
3694152996456,6cyclictest3699035-21kworker/u8:0+events_unbound07:55:141
3694150996454,8cyclictest3760861-21apt-get10:35:090
3694150996452,10cyclictest3718477-21true08:25:000
3694152996356,5cyclictest3713917-21apt-get08:10:111
3694152996355,5cyclictest3784528-21kworker/u8:3+events_unbound12:30:231
3694150996358,4cyclictest3765366-21kworker/u8:2+events_unbound11:25:230
3694150996358,4cyclictest3714327-21kworker/u8:1+flush-179:008:39:550
3694150996357,4cyclictest3739175-21kworker/u8:3+flush-179:010:05:150
3694150996356,5cyclictest3784528-21kworker/u8:3+flush-179:012:30:170
3694150996255,6cyclictest3739175-21kworker/u8:3+flush-179:009:50:000
3694152996154,5cyclictest3752383-21kworker/u8:1+flush-179:010:50:011
3694152996151,7cyclictest3727986-21latency_hist08:55:011
3694150996153,6cyclictest3702164-21latency_hist07:35:000
3694150996153,6cyclictest3702164-21latency_hist07:35:000
3694152996054,5cyclictest3714327-21kworker/u8:1+flush-179:008:40:001
3694152996053,5cyclictest3765366-21kworker/u8:2+events_unbound11:35:241
3694152996051,6cyclictest3693414-21kworker/u8:3+events_unbound07:50:241
3694152996050,8cyclictest3791304-21cat12:10:021
3694150996052,6cyclictest3712741-21kworker/u8:3+flush-179:008:05:210
3694150995953,5cyclictest3693414-21kworker/u8:3+flush-179:007:35:220
3694152995853,4cyclictest3739175-21kworker/u8:3+flush-179:009:40:241
3694152995843,13cyclictest3699035-21kworker/u8:0+events_unbound08:00:151
3694150995854,3cyclictest714-21Xorg08:34:590
3694150995852,4cyclictest3739175-21kworker/u8:3+flush-179:009:40:220
3694152995751,4cyclictest3690704-21kworker/u8:2+flush-179:007:30:171
3694152995751,4cyclictest3690704-21kworker/u8:2+flush-179:007:30:161
3694150995753,3cyclictest3739175-21kworker/u8:3+flush-179:009:50:150
3694150995749,5cyclictest3748691-21latency_hist10:00:010
3694150995749,5cyclictest3748691-21latency_hist10:00:010
3694152995647,7cyclictest3736201-21/usr/sbin/munin09:20:241
3694150995649,5cyclictest3784472-21kworker/u8:2+events_unbound12:10:220
3694152995546,7cyclictest3699035-21kworker/u8:0+flush-179:007:45:001
3694150995550,4cyclictest3768617-21kworker/u8:0+flush-179:011:05:170
3694152995446,6cyclictest3757159-21kworker/u8:0+events_unbound10:40:231
3694150995443,8cyclictest510-21rs:main0
3694152995348,4cyclictest3750579-21kworker/u8:0+flush-179:010:10:191
3694152995346,5cyclictest3765366-21kworker/u8:2+events_unbound10:55:251
3694150995348,4cyclictest3752383-21kworker/u8:1+flush-179:010:44:550
3694150995348,4cyclictest3699035-21kworker/u8:0+events_unbound08:00:010
3694152995246,4cyclictest3695794-21latency_hist07:15:001
3694150995249,2cyclictest3720009-21kworker/u8:2+flush-179:008:30:000
3694150995247,4cyclictest3784528-21kworker/u8:3+events_unbound12:00:240
3694150995245,5cyclictest3727060-21kworker/u8:3+events_unbound08:55:130
3694152995146,4cyclictest3784472-21kworker/u8:2+flush-179:012:05:211
3694152995144,4cyclictest3776584-21kworker/u8:3+events_unbound11:30:151
3694152995143,5cyclictest3752383-21kworker/u8:1+flush-179:010:25:011
3694150995143,7cyclictest3746549-21kworker/u8:1+events_unbound10:00:200
4577091490,13ptp4l441ktimers/307:10:023
3694152994942,4cyclictest3784528-21kworker/u8:3+events_unbound12:35:171
3694152994843,4cyclictest3714327-21kworker/u8:1+flush-179:008:49:561
3694152994839,7cyclictest1213033-21systemd-journal11:50:001
3694150994842,4cyclictest3784472-21kworker/u8:2+events_unbound12:05:130
3694150994840,6cyclictest3765626-21/usr/sbin/munin10:50:150
3694152994742,4cyclictest3752383-21kworker/u8:1+flush-179:011:05:011
3694152994741,5cyclictest3773377-21kworker/u8:1+events_unbound11:20:251
3694152994739,6cyclictest3773377-21kworker/u8:1+flush-179:011:15:201
3694150994742,4cyclictest3790908-21kworker/u8:1+events_unbound12:25:250
3694150994741,5cyclictest3693414-21kworker/u8:3+flush-179:007:50:210
3694150994741,4cyclictest3765366-21kworker/u8:2+flush-179:011:20:220
3694152994641,4cyclictest3750579-21kworker/u8:0+flush-179:010:15:171
3694152994641,4cyclictest3750579-21kworker/u8:0+flush-179:010:15:161
3694152994640,4cyclictest3698991-21latency_hist07:25:011
3694150994641,4cyclictest3755289-21kworker/u8:2+flush-179:010:20:150
369415099461,42cyclictest3779729-21dump-pmu-power11:35:000
3694152994540,4cyclictest3790908-21kworker/u8:1+flush-179:012:24:551
3694152994539,4cyclictest3790908-21kworker/u8:1+flush-179:012:25:231
3694152994536,8cyclictest3752383-21kworker/u8:1+flush-179:011:05:141
3694150994540,4cyclictest3731158-21kworker/u8:2+events_unbound09:35:230
3694150994539,5cyclictest3795422-21kworker/u8:0+flush-179:012:20:240
3694150994537,4cyclictest3699035-21kworker/u8:0+events_unbound08:00:230
369415499440,41cyclictest0-21swapper/209:11:592
3694152994430,10cyclictest1213033-21systemd-journal08:25:001
3694150994439,3cyclictest191rcuc/009:10:200
3694150994437,5cyclictest3784528-21kworker/u8:3+flush-179:012:35:240
3694150994437,5cyclictest3782908-21latency_hist11:45:010
3694150994437,5cyclictest3723194-21kworker/u8:0+events_unbound08:40:140
3694150994337,4cyclictest3765366-21kworker/u8:2+events_unbound11:00:190
3694150994336,5cyclictest3715244-21cron08:15:010
369415499420,40cyclictest0-21swapper/211:08:592
3694152994235,5cyclictest3745758-21apt-get09:50:121
3694152994234,6cyclictest3734904-21kworker/u8:0+events_unbound09:25:151
3694150994236,4cyclictest3776518-21kworker/u8:0+flush-179:011:55:160
369415099420,5cyclictest3752140-21turbostat10:14:550
3694156994136,4cyclictest3768591-21turbostat10:59:593
369415699410,40cyclictest0-21swapper/309:11:593
3694152994136,4cyclictest3726635-21kworker/u8:0+flush-179:009:05:161
3694152994135,5cyclictest3693414-21kworker/u8:3+events_unbound07:25:241
369415299410,4cyclictest3786082-21turbostat11:59:551
3694150994136,4cyclictest3765366-21kworker/u8:2+flush-179:010:55:150
3694150994135,5cyclictest3731158-21kworker/u8:2+events_unbound09:15:230
369415699400,39cyclictest0-21swapper/311:08:593
3694152994036,3cyclictest3731183-21munin-run09:05:001
3694150994034,5cyclictest3752383-21kworker/u8:1+events_unbound10:25:020
369415499390,36cyclictest0-21swapper/207:14:562
369415499390,2cyclictest0-21swapper/207:54:552
3694152993936,2cyclictest3714327-21kworker/u8:1+flush-179:009:10:201
3694152993934,4cyclictest3759055-21kworker/u8:3+flush-179:010:40:011
3694154993834,2cyclictest0-21swapper/212:22:592
3694152993835,2cyclictest3765366-21kworker/u8:2+events_unbound10:50:211
3694152993833,4cyclictest3760612-21munin-run10:34:591
3694150993836,2cyclictest3714327-21kworker/u8:1+flush-179:009:05:250
3694156993734,2cyclictest0-21swapper/312:22:583
3694156993733,2cyclictest0-21swapper/311:18:593
369415699370,1cyclictest0-21swapper/308:27:593
369415699370,1cyclictest0-21swapper/307:15:583
3694154993734,2cyclictest0-21swapper/211:00:002
3694154993733,2cyclictest0-21swapper/212:34:542
3694154993733,2cyclictest0-21swapper/211:18:592
3694154993733,2cyclictest0-21swapper/208:34:552
3694150993733,3cyclictest3784528-21kworker/u8:3+flush-179:011:50:200
369415099372,6cyclictest3694462-21apt-get07:10:110
3694156993634,1cyclictest0-21swapper/312:34:543
369415699360,35cyclictest0-21swapper/307:14:553
369415699360,1cyclictest0-21swapper/307:54:553
3694154993631,2cyclictest0-21swapper/210:07:002
3694156993533,1cyclictest0-21swapper/308:34:553
369415499350,1cyclictest0-21swapper/208:27:592
369415499350,1cyclictest0-21swapper/207:15:582
3694154993431,2cyclictest0-21swapper/212:19:582
3694154993431,2cyclictest0-21swapper/210:21:002
3694156993331,1cyclictest0-21swapper/312:19:593
3694156993331,1cyclictest0-21swapper/310:20:593
3694156993330,2cyclictest0-21swapper/310:06:593
3694156993329,2cyclictest0-21swapper/309:36:593
3694154993330,2cyclictest0-21swapper/209:18:592
3694156993229,2cyclictest0-21swapper/309:18:593
369415499320,30cyclictest0-21swapper/208:43:592
3694150993227,4cyclictest3737535-21kworker/u8:1+flush-179:009:30:170
369415699310,30cyclictest0-21swapper/308:43:593
3694154993128,2cyclictest0-21swapper/210:37:002
3694154993128,2cyclictest0-21swapper/209:37:002
3694154993127,2cyclictest0-21swapper/212:38:592
3694154993127,2cyclictest0-21swapper/209:07:582
369415499310,2cyclictest0-21swapper/210:15:132
369415499310,2cyclictest0-21swapper/210:15:132
369415499310,29cyclictest0-21swapper/208:15:152
369415499310,29cyclictest0-21swapper/208:15:142
369415499310,29cyclictest0-21swapper/208:05:122
3694152993128,2cyclictest3720087-21latency_hist08:30:001
3694156993028,1cyclictest0-21swapper/309:07:593
369415699300,29cyclictest0-21swapper/308:15:143
369415699300,29cyclictest0-21swapper/308:15:143
369415699300,28cyclictest0-21swapper/308:50:133
369415699300,21cyclictest0-21swapper/307:35:133
3694154993027,2cyclictest0-21swapper/209:40:122
3694154993026,2cyclictest0-21swapper/211:10:592
369415499300,2cyclictest0-21swapper/210:10:122
369415499300,28cyclictest0-21swapper/212:25:132
369415499300,28cyclictest0-21swapper/211:30:122
369415499300,28cyclictest0-21swapper/210:00:022
369415499300,28cyclictest0-21swapper/207:35:122
369415499300,28cyclictest0-21swapper/207:25:142
369415499300,27cyclictest0-21swapper/210:30:122
369415499300,21cyclictest0-21swapper/211:50:122
3694156992927,1cyclictest0-21swapper/312:39:003
3694156992927,1cyclictest0-21swapper/310:36:593
3694156992927,1cyclictest0-21swapper/310:20:003
3694156992927,1cyclictest0-21swapper/310:20:003
3694156992927,1cyclictest0-21swapper/309:40:133
3694156992926,2cyclictest0-21swapper/311:10:583
3694156992926,2cyclictest0-21swapper/310:30:123
369415699290,28cyclictest0-21swapper/311:50:123
369415699290,28cyclictest0-21swapper/310:10:123
369415699290,28cyclictest0-21swapper/308:05:123
369415699290,21cyclictest0-21swapper/310:50:123
3694154992926,2cyclictest0-21swapper/209:00:122
369415499290,2cyclictest0-21swapper/212:00:132
369415499290,28cyclictest0-21swapper/211:20:122
369415499290,28cyclictest0-21swapper/210:50:122
369415499290,28cyclictest0-21swapper/209:45:142
3694150992925,3cyclictest3790908-21kworker/u8:1+flush-179:012:15:170
3694156992826,1cyclictest0-21swapper/309:00:123
3694156992825,2cyclictest0-21swapper/312:10:013
3694156992825,2cyclictest0-21swapper/309:45:143
3694156992825,2cyclictest0-21swapper/309:34:593
3694156992825,2cyclictest0-21swapper/308:03:593
3694156992825,2cyclictest0-21swapper/307:25:133
3694156992822,5cyclictest3710226-21turbostat08:00:003
369415699280,2cyclictest0-21swapper/309:55:133
369415699280,2cyclictest0-21swapper/309:55:133
369415699280,27cyclictest0-21swapper/312:00:133
369415699280,26cyclictest0-21swapper/312:25:133
369415699280,26cyclictest0-21swapper/311:30:113
369415699280,26cyclictest0-21swapper/311:20:133
369415699280,26cyclictest0-21swapper/310:00:023
369415699280,1cyclictest0-21swapper/311:35:123
369415699280,1cyclictest0-21swapper/310:45:153
3694154992825,2cyclictest0-21swapper/212:10:012
3694154992825,2cyclictest0-21swapper/209:55:132
3694154992825,2cyclictest0-21swapper/209:55:122
369415499280,2cyclictest0-21swapper/211:46:002
369415499280,2cyclictest0-21swapper/211:35:122
369415499280,2cyclictest0-21swapper/210:45:142
369415499280,2cyclictest0-21swapper/210:27:582
369415499280,2cyclictest0-21swapper/208:50:132
3694152992824,3cyclictest3712707-21fschecks_time08:05:151
4577091270,6ptp4l61490irq/134-eno1-TxRx-012:10:003
3694156992724,2cyclictest0-21swapper/309:27:593
369415699270,25cyclictest0-21swapper/308:48:593
3694154992724,2cyclictest0-21swapper/208:03:592
3694154992723,2cyclictest0-21swapper/209:27:592
369415499270,2cyclictest0-21swapper/209:23:002
369415499270,25cyclictest0-21swapper/209:53:002
369415499270,24cyclictest0-21swapper/211:42:592
369415499270,19cyclictest0-21swapper/208:48:592
4577091260,5ptp4l441ktimers/307:24:563
4577091260,3ptp4l441ktimers/307:50:013
369415699260,2cyclictest0-21swapper/310:27:593
369415699260,1cyclictest0-21swapper/311:25:133
3694154992624,1cyclictest0-21swapper/209:34:592
3694152992621,4cyclictest0-21swapper/107:10:021
3694152992620,4cyclictest0-21swapper/111:15:011
4577091250,6ptp4l61490irq/134-eno1-TxRx-011:45:003
4577091250,4ptp4l441ktimers/308:40:003
4577091250,3ptp4l441ktimers/308:59:553
4577091250,3ptp4l441ktimers/308:25:003
3694156992523,1cyclictest0-21swapper/309:24:553
369415699250,24cyclictest0-21swapper/311:46:593
369415699250,24cyclictest0-21swapper/309:53:003
3694154992522,2cyclictest0-21swapper/207:20:592
369415499251,1cyclictest351rcuc/207:30:132
369415499251,1cyclictest351rcuc/207:30:132
369415499250,2cyclictest0-21swapper/211:25:132
4577091240,3ptp4l441ktimers/311:59:573
4577091240,3ptp4l441ktimers/311:04:563
4577091240,3ptp4l441ktimers/307:45:003
4577091240,2ptp4l441ktimers/307:35:003
4577091240,2ptp4l441ktimers/307:35:003
3694154992422,1cyclictest0-21swapper/208:00:002
3694154992420,2cyclictest0-21swapper/212:05:592
4577091230,3ptp4l61490irq/134-eno1-TxRx-010:44:553
4577091230,3ptp4l441ktimers/308:14:563
3694154992219,2cyclictest0-21swapper/211:58:592
3694154992218,2cyclictest0-21swapper/208:57:592
231999220,13rtkit-daemon495-21gpm07:09:450
3694154992017,2cyclictest0-21swapper/208:22:592
3694154991917,1cyclictest0-21swapper/208:40:002
3694154991917,1cyclictest0-21swapper/207:44:592
3694154991814,2cyclictest0-21swapper/211:00:122
369415499149,3cyclictest3715256-21turbostat08:15:002
3694154991411,2cyclictest0-21swapper/210:42:592
369415499118,2cyclictest351rcuc/207:45:142
36941549963,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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