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2026-04-29 - 15:38
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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 Wed Apr 29, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35993859910798,7cyclictest3683163-21latency_hist11:30:000
35993859910596,7cyclictest3634597-21latency_hist09:00:010
35993859910596,7cyclictest3634597-21latency_hist09:00:010
35993899910296,4cyclictest3593203-21kworker/u8:0+events_unbound07:20:011
35993859910088,9cyclictest1213033-21systemd-journal09:55:000
3599385999588,5cyclictest3670192-21kworker/u8:0+flush-179:010:50:260
3599385999588,5cyclictest3670192-21kworker/u8:0+flush-179:010:50:250
3599385998777,7cyclictest3657386-21latency_hist10:10:010
3599385998777,7cyclictest3657386-21latency_hist10:10:010
3599389998678,6cyclictest3627973-21latency_hist08:40:001
3599389998561,22cyclictest3705959-21latency_hist12:40:001
3599385998374,7cyclictest3655801-21latency_hist10:05:010
3599385998372,8cyclictest3675446-21/usr/sbin/munin11:05:230
3599385998072,6cyclictest3624783-21latency_hist08:30:010
3599389997969,8cyclictest510-21rs:main1
3599389997869,6cyclictest3649436-21latency_hist09:45:001
3599389997869,6cyclictest3649436-21latency_hist09:45:001
3599385997764,10cyclictest3680226-21/usr/sbin/munin11:20:230
3599389997568,5cyclictest3638085-21kworker/u8:1+flush-179:009:10:161
3599389997560,13cyclictest3634637-21kworker/u8:3+flush-179:009:40:001
3599385997365,5cyclictest3663218-21kworker/u8:0+flush-179:010:30:260
3599389997262,8cyclictest3696661-21apt-get12:10:121
3599389997162,6cyclictest3660821-21/usr/sbin/munin10:20:231
3599385997165,5cyclictest3651056-21kworker/u8:2+flush-179:009:55:230
3599389997062,6cyclictest3620040-21kworker/u8:0+flush-179:009:00:211
3599389997060,7cyclictest1213033-21systemd-journal11:04:551
3599389997058,9cyclictest3679948-21kworker/u8:2+flush-179:012:20:001
3599385996859,6cyclictest3643071-21latency_hist09:25:010
3599385996832,19cyclictest3643078-21turbostat09:29:550
3599385996761,4cyclictest3620263-21apt-get08:15:110
3599385996756,8cyclictest3636188-21latency_hist09:05:020
3599389996658,6cyclictest3686869-21apt-get11:40:101
3599385996557,6cyclictest3651021-21latency_hist09:50:010
3599385996556,7cyclictest3665648-21apt-get10:35:100
3599385996454,9cyclictest0-21swapper/007:44:590
3599385996358,4cyclictest3647875-21kworker/u8:4+flush-179:009:40:260
3599385996358,4cyclictest3647875-21kworker/u8:4+flush-179:009:40:260
3599385996254,6cyclictest3688454-21apt-get11:45:110
3599389996152,7cyclictest3604327-21apt-get07:25:131
3599389996151,8cyclictest3633251-21apt-get08:55:131
3599389996151,8cyclictest3633251-21apt-get08:55:121
3599389996150,8cyclictest3613897-21apt-get07:55:121
3599385996142,16cyclictest3686593-21latency_hist11:40:020
3599389996052,7cyclictest3679948-21kworker/u8:2+flush-179:011:35:011
3599389996050,7cyclictest3678616-21/usr/sbin/munin11:15:171
3599385996053,5cyclictest3681608-21kworker/u8:3+flush-179:011:55:170
3599385995953,5cyclictest1213033-21systemd-journal12:07:050
3599385995951,6cyclictest3673655-21kworker/u8:1+events_unbound11:30:230
3599389995747,8cyclictest3663752-21apt-get10:25:571
3599385995746,9cyclictest3663840-21kworker/u8:2+flush-179:011:00:000
3599389995649,4cyclictest3673655-21kworker/u8:1+events_unbound11:35:021
3599389995645,9cyclictest3615505-21apt-get08:00:111
359938999560,1cyclictest0-21swapper/107:14:001
3599385995653,2cyclictest0-21swapper/009:19:590
3599385995650,4cyclictest3654248-21kworker/u8:3+flush-179:010:15:010
3599385995647,7cyclictest3701220-21kworker/u8:3+flush-179:012:40:010
3599385995644,9cyclictest3654248-21kworker/u8:3+flush-179:010:25:210
3599389995545,8cyclictest3616871-21kworker/u8:1+events_unbound08:20:001
3599389995448,4cyclictest3651056-21kworker/u8:2+flush-179:009:55:251
3599389995436,16cyclictest3691880-21apt-get11:55:111
3599389995347,5cyclictest3670192-21kworker/u8:0+flush-179:010:50:181
3599389995347,5cyclictest3670192-21kworker/u8:0+flush-179:010:50:171
3599389995345,6cyclictest3679948-21kworker/u8:2+flush-179:011:25:211
3599389995342,9cyclictest3608809-21kworker/u8:0+events_unbound07:44:591
3599385995342,9cyclictest1213033-21systemd-journal09:35:000
359938599531,37cyclictest714-21Xorg12:19:000
3599391995250,1cyclictest0-21swapper/209:19:592
3599385995244,7cyclictest3689796-21apt-get11:50:030
3599385995243,7cyclictest3667034-21kworker/u8:3+flush-179:011:05:010
3599389995145,5cyclictest3654248-21kworker/u8:3+flush-179:010:05:231
3599389995145,5cyclictest3654248-21kworker/u8:3+flush-179:010:05:231
3599389995145,5cyclictest3612034-21kworker/u8:3+flush-179:008:25:001
3599389995133,16cyclictest3636192-21turbostat09:09:551
3599385995142,7cyclictest1213033-21systemd-journal12:35:010
3599385995140,9cyclictest3612034-21kworker/u8:3+flush-179:008:15:010
4577091500,14ptp4l61490irq/134-eno1-TxRx-007:10:003
3599389995031,18cyclictest3608825-21ntp07:35:561
3599385995043,5cyclictest3679948-21kworker/u8:2+flush-179:012:20:250
3599389994942,5cyclictest3668823-21/usr/sbin/munin10:45:221
3599389994942,4cyclictest3654248-21kworker/u8:3+flush-179:010:10:251
3599385994942,5cyclictest3633021-21kworker/u8:2+flush-179:008:55:000
3599389994842,5cyclictest3663840-21kworker/u8:2+flush-179:010:35:151
3599389994740,5cyclictest3673655-21kworker/u8:1+flush-179:011:10:001
3599385994741,5cyclictest3593203-21kworker/u8:0+flush-179:007:15:230
3599389994643,2cyclictest3701164-21kworker/u8:1+flush-179:012:25:571
3599389994636,8cyclictest3618677-21apt-get08:10:111
3599389994622,22cyclictest3604072-21munin-run07:25:001
3599385994640,4cyclictest3679948-21kworker/u8:2+flush-179:012:00:050
359938599461,43cyclictest3668590-21idleruntime-cro10:45:000
3599389994540,4cyclictest3612034-21kworker/u8:3+flush-179:008:35:011
3599389994540,3cyclictest3668622-21systemd-run10:45:011
3599389994527,16cyclictest714-21Xorg09:28:591
3599385994516,26cyclictest714-21Xorg11:13:580
3599389994436,6cyclictest3618425-21munin-run08:10:001
3599389994436,5cyclictest1213033-21systemd-journal07:55:011
3599389994435,5cyclictest3655798-21cron10:05:011
359938999440,29cyclictest714-21Xorg09:53:591
3599385994437,5cyclictest3701442-21apt-get12:25:120
3599385994436,5cyclictest3638549-21apt-get09:10:120
3599391994340,2cyclictest0-21swapper/212:24:562
3599391994334,7cyclictest0-21swapper/207:13:592
359939199430,40cyclictest0-21swapper/211:08:002
359939199430,2cyclictest0-21swapper/212:19:002
3599389994329,12cyclictest3679948-21kworker/u8:2+flush-179:012:05:061
3599389994323,19cyclictest0-21swapper/108:30:001
359938999431,40cyclictest714-21Xorg09:23:591
359938999430,42cyclictest0-21swapper/112:33:591
359938999430,42cyclictest0-21swapper/109:35:001
3599385994336,5cyclictest1213033-21systemd-journal08:08:050
3599385994334,7cyclictest3650482-21kworker/u8:1+flush-179:010:20:010
3599385994334,7cyclictest3620040-21kworker/u8:0+flush-179:008:40:150
3599385994331,11cyclictest3687248-21fschecks_time11:40:160
3599385994325,14cyclictest3621870-21apt-get08:20:120
3599389994236,5cyclictest484-21dbus-daemon11:24:591
3599389994224,16cyclictest3688567-21tr11:45:141
3599385994233,7cyclictest1213033-21systemd-journal08:30:020
3599394994139,1cyclictest0-21swapper/307:56:003
3599389994133,7cyclictest3667034-21kworker/u8:3+flush-179:011:10:211
3599385994135,5cyclictest3608854-21sendmail07:40:010
3599385994134,5cyclictest3650482-21kworker/u8:1+flush-179:010:20:040
3599385994134,5cyclictest3596315-21kworker/u8:3+flush-179:007:20:140
3599385994123,16cyclictest3636816-21grep09:05:130
3599389994035,3cyclictest3673651-21systemd-run11:00:001
3599389994034,4cyclictest3612094-21systemd07:50:011
3599389994029,8cyclictest3640114-21/usr/sbin/munin09:15:161
3599385994035,4cyclictest3626352-21kworker/u8:2+flush-179:008:35:200
3599385994031,6cyclictest1213033-21systemd-journal07:45:050
359938599401,30cyclictest714-21Xorg12:10:590
3599391993936,2cyclictest0-21swapper/212:33:592
3599391993936,2cyclictest0-21swapper/209:23:592
359939199390,36cyclictest0-21swapper/207:19:552
359939199390,35cyclictest0-21swapper/210:41:002
3599389993926,10cyclictest1213033-21systemd-journal10:35:011
3599394993836,1cyclictest0-21swapper/311:51:003
359939199380,35cyclictest0-21swapper/211:52:592
3599385993835,2cyclictest0-21swapper/007:11:590
3599385993833,3cyclictest0-21swapper/007:26:590
3599385993831,4cyclictest3613651-21cron07:55:010
3599391993734,2cyclictest0-21swapper/210:07:592
3599391993734,2cyclictest0-21swapper/210:07:592
359938999374,10cyclictest714-21Xorg12:00:581
359938999373,7cyclictest714-21Xorg11:51:001
3599389993734,2cyclictest0-21swapper/109:46:591
3599389993731,5cyclictest3654248-21kworker/u8:3+events_unbound10:15:241
3599389993713,3cyclictest0-21swapper/108:45:221
3599385993732,3cyclictest3606302-21fschecks_time07:30:130
3599385993718,17cyclictest0-21swapper/011:17:590
3599394993634,1cyclictest0-21swapper/311:19:563
3599394993634,1cyclictest0-21swapper/308:41:593
3599394993634,1cyclictest0-21swapper/308:25:593
359939499360,1cyclictest0-21swapper/311:10:003
359939499360,1cyclictest0-21swapper/308:07:593
3599391993634,1cyclictest0-21swapper/211:39:592
3599391993633,2cyclictest0-21swapper/211:33:592
3599391993633,2cyclictest0-21swapper/209:04:592
359938999362,6cyclictest714-21Xorg08:41:001
3599389993613,6cyclictest3701182-21cron12:25:001
3599385993629,5cyclictest3599261-21latency_hist07:10:010
359938599362,6cyclictest714-21Xorg08:03:580
3599385993617,18cyclictest3670336-21readlink10:50:010
3599385993615,20cyclictest0-21swapper/007:55:250
3599394993533,1cyclictest0-21swapper/311:34:543
3599394993533,1cyclictest0-21swapper/309:34:593
3599394993533,1cyclictest0-21swapper/307:53:593
3599394993533,1cyclictest0-21swapper/307:47:583
3599394993533,1cyclictest0-21swapper/307:44:553
3599394993530,4cyclictest3649445-21turbostat09:49:553
359939499350,34cyclictest0-21swapper/310:29:553
359939499350,1cyclictest0-21swapper/312:05:003
359939499350,1cyclictest0-21swapper/309:20:593
359939199350,21cyclictest0-21swapper/208:54:552
359939199350,1cyclictest0-21swapper/212:10:582
359939199350,1cyclictest0-21swapper/212:07:002
359938999354,9cyclictest2304-21lightdm-gtk-gre08:52:591
359938599351,4cyclictest0-21swapper/009:35:130
3599394993432,1cyclictest0-21swapper/312:38:003
3599394993432,1cyclictest0-21swapper/309:55:593
359939499340,1cyclictest0-21swapper/307:11:593
3599391993432,1cyclictest0-21swapper/208:40:002
3599391993431,2cyclictest0-21swapper/207:30:592
3599391993430,2cyclictest0-21swapper/207:27:002
3599391993425,7cyclictest0-21swapper/211:25:592
3599391993421,10cyclictest0-21swapper/212:40:002
3599394993331,1cyclictest0-21swapper/311:44:563
3599394993331,1cyclictest0-21swapper/310:46:593
3599391993331,1cyclictest0-21swapper/207:40:002
3599391993329,3cyclictest0-21swapper/209:29:552
359939199330,31cyclictest0-21swapper/208:08:592
3599391993227,2cyclictest0-21swapper/209:46:592
359939199320,29cyclictest0-21swapper/208:33:592
3599394993129,1cyclictest0-21swapper/312:17:003
3599394993129,1cyclictest0-21swapper/307:39:563
3599391993128,2cyclictest0-21swapper/211:24:552
3599391993125,5cyclictest0-21swapper/208:20:112
359938599311,6cyclictest0-21swapper/008:45:590
3599391993028,1cyclictest0-21swapper/210:04:592
3599391993028,1cyclictest0-21swapper/207:55:002
3599391993027,2cyclictest0-21swapper/210:50:022
3599391993027,2cyclictest0-21swapper/210:50:022
3599391993026,3cyclictest0-21swapper/209:09:562
3599391993016,11cyclictest0-21swapper/210:00:002
4577091290,7ptp4l441ktimers/310:59:553
4577091290,7ptp4l441ktimers/310:55:003
4577091290,7ptp4l441ktimers/310:54:593
4577091290,7ptp4l441ktimers/309:45:003
4577091290,7ptp4l441ktimers/309:45:003
4577091290,6ptp4l441ktimers/310:35:013
3599394992927,1cyclictest0-21swapper/310:40:003
3599394992927,1cyclictest0-21swapper/309:08:593
3599394992927,1cyclictest0-21swapper/308:24:553
3599394992926,2cyclictest0-21swapper/312:20:133
3599391992926,2cyclictest0-21swapper/211:13:592
359939199290,27cyclictest0-21swapper/208:16:002
4577091280,7ptp4l441ktimers/311:49:593
4577091280,6ptp4l61490irq/134-eno1-TxRx-011:25:013
4577091280,6ptp4l441ktimers/309:15:003
4577091280,6ptp4l441ktimers/308:55:013
4577091280,6ptp4l441ktimers/307:34:563
3599394992826,1cyclictest0-21swapper/308:55:133
3599394992826,1cyclictest0-21swapper/308:55:133
359939499280,2cyclictest0-21swapper/309:25:133
359939499280,26cyclictest0-21swapper/311:35:033
359939499280,26cyclictest0-21swapper/308:10:143
359939499280,21cyclictest0-21swapper/307:15:143
359939499280,1cyclictest0-21swapper/309:35:123
3599391992825,2cyclictest0-21swapper/212:04:002
3599391992825,2cyclictest0-21swapper/211:49:562
3599391992825,2cyclictest0-21swapper/209:50:142
3599391992825,2cyclictest0-21swapper/209:41:592
3599391992825,2cyclictest0-21swapper/209:41:592
3599391992825,2cyclictest0-21swapper/209:32:592
3599391992825,2cyclictest0-21swapper/208:40:592
3599391992825,2cyclictest0-21swapper/207:44:002
359939199280,27cyclictest0-21swapper/207:55:132
4577091270,6ptp4l61490irq/134-eno1-TxRx-011:30:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-010:20:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-007:30:003
4577091270,6ptp4l441ktimers/312:35:013
4577091270,6ptp4l441ktimers/312:15:003
4577091270,6ptp4l441ktimers/310:09:563
4577091270,6ptp4l441ktimers/310:09:563
359939499270,26cyclictest0-21swapper/310:02:593
359939499270,26cyclictest0-21swapper/309:54:583
3599391992725,1cyclictest0-21swapper/209:40:002
3599391992715,10cyclictest0-21swapper/207:25:012
359939199270,25cyclictest0-21swapper/210:46:582
4577091260,6ptp4l61490irq/134-eno1-TxRx-012:09:593
4577091260,6ptp4l61490irq/134-eno1-TxRx-010:15:003
4577091260,6ptp4l61490irq/134-eno1-TxRx-008:39:563
4577091260,5ptp4l61490irq/134-eno1-TxRx-012:30:003
4577091260,5ptp4l61490irq/134-eno1-TxRx-010:45:013
4577091260,5ptp4l441ktimers/311:59:563
4577091260,5ptp4l441ktimers/310:24:543
3599394992624,1cyclictest0-21swapper/309:16:593
3599391992623,2cyclictest0-21swapper/211:00:592
3599391992623,2cyclictest0-21swapper/210:57:592
3599391992623,2cyclictest0-21swapper/207:46:002
4577091250,5ptp4l441ktimers/311:14:553
4577091250,4ptp4l61490irq/134-eno1-TxRx-008:19:553
4577091250,4ptp4l441ktimers/308:05:013
3599394992523,1cyclictest0-21swapper/309:00:143
3599391992523,1cyclictest0-21swapper/208:49:552
3599391992523,1cyclictest0-21swapper/208:05:012
3599391992522,2cyclictest0-21swapper/212:25:582
3599391992522,2cyclictest0-21swapper/209:10:132
4577091240,3ptp4l441ktimers/308:49:553
3599394992421,2cyclictest0-21swapper/308:30:133
4577091230,4ptp4l61490irq/134-eno1-TxRx-011:05:013
3599394992321,1cyclictest0-21swapper/307:21:593
3599391992320,2cyclictest0-21swapper/210:39:562
3599391992118,2cyclictest0-21swapper/210:26:592
3599391992017,2cyclictest0-21swapper/208:10:592
3599391991917,1cyclictest0-21swapper/211:59:582
3599391991915,2cyclictest0-21swapper/211:17:582
359938999190,16cyclictest0-21swapper/107:10:011
3599391991815,2cyclictest0-21swapper/208:58:592
3599391991815,2cyclictest0-21swapper/208:58:592
3599391991714,2cyclictest0-21swapper/208:25:592
3599391991611,4cyclictest0-21swapper/210:12:002
3599391991411,2cyclictest0-21swapper/211:41:592
359939199129,2cyclictest0-21swapper/210:15:592
3599391991210,1cyclictest0-21swapper/210:25:002
35993919960,4cyclictest3663822-21turbostat10:34:562
35993919940,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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