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2026-03-15 - 20:52
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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 376 highest latencies:
System rackeslot6.osadl.org (updated Sun Mar 15, 2026 12:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
75246799109101,6cyclictest784254-21kworker/u8:2+events_unbound08:55:031
752467999893,3cyclictest777888-21kworker/u8:3+events_unbound09:00:231
752467999891,5cyclictest842097-21kworker/u8:0+events_unbound12:35:241
752467999582,5cyclictest777288-21kworker/u8:1+events_unbound08:30:191
752467999490,3cyclictest787699-21kworker/u8:4+events_unbound09:05:241
752467999078,5cyclictest753975-21kworker/u8:2+events_unbound07:25:201
752467998984,4cyclictest777888-21kworker/u8:3+events_unbound09:25:241
752466998980,6cyclictest765116-21latency_hist07:50:010
752467998876,9cyclictest266-21systemd-journal09:50:001
752467998579,4cyclictest850670-21kworker/u8:2+flush-179:012:25:231
752467998572,5cyclictest765373-21kworker/u8:1+events_unbound08:15:261
752467998567,12cyclictest760348-21kworker/u8:3+flush-179:007:40:151
752466998576,7cyclictest266-21systemd-journal08:15:000
752467998378,4cyclictest805573-21kworker/u8:1+flush-179:010:05:191
752467998168,10cyclictest266-21systemd-journal08:40:001
752467998076,3cyclictest777888-21kworker/u8:3+events_unbound09:30:231
752467998075,4cyclictest842097-21kworker/u8:0+flush-179:012:20:001
752467998075,4cyclictest777888-21kworker/u8:3+events_unbound09:35:211
752467997865,7cyclictest781083-21kworker/u8:0+events_unbound08:45:201
752467997772,4cyclictest845242-21kworker/u8:2+events_unbound12:00:201
752467997772,4cyclictest774714-21kworker/u8:2+events_unbound08:25:011
752467997772,4cyclictest766738-21kworker/u8:3+flush-179:008:05:231
752467997768,4cyclictest806477-21kworker/u8:3+events_unbound10:20:241
752467997668,5cyclictest809987-21kworker/u8:0+events_unbound10:15:191
752467997664,5cyclictest806477-21kworker/u8:3+events_unbound10:30:201
752467997569,4cyclictest809987-21kworker/u8:0+flush-179:010:35:191
752467997566,6cyclictest848420-21latency_hist12:10:011
752467997167,3cyclictest854833-21kworker/u8:1+flush-179:012:30:151
752467997165,4cyclictest765373-21kworker/u8:1+events_unbound08:10:201
752467997066,3cyclictest837255-21kworker/u8:1+flush-179:011:39:551
752467997063,5cyclictest805573-21kworker/u8:1+events_unbound09:55:221
752466997056,10cyclictest266-21systemd-journal11:09:590
752467996863,4cyclictest816354-21kworker/u8:2+flush-179:011:05:211
752467996863,4cyclictest816354-21kworker/u8:2+events_unbound10:40:181
752467996863,4cyclictest763550-21kworker/u8:2+events_unbound07:50:201
752467996862,4cyclictest777888-21kworker/u8:3+flush-179:008:40:191
752466996855,10cyclictest266-21systemd-journal07:40:220
752467996763,3cyclictest837255-21kworker/u8:1+flush-179:011:49:551
752467996761,5cyclictest753975-21kworker/u8:2+events_unbound07:20:221
752467996660,5cyclictest806477-21kworker/u8:3+events_unbound10:00:241
752467996659,6cyclictest819551-21kworker/u8:1+events_unbound10:45:251
752467996560,4cyclictest777288-21kworker/u8:1+events_unbound08:30:001
752467996555,7cyclictest792432-21latency_hist09:15:011
752467996552,4cyclictest760348-21kworker/u8:3+events_unbound07:35:171
752467996460,3cyclictest837255-21kworker/u8:1+flush-179:011:55:261
752466996454,7cyclictest266-21systemd-journal08:00:000
752467996359,3cyclictest827149-21kworker/u8:1+events_unbound11:10:241
752467996359,3cyclictest816354-21kworker/u8:2+events_unbound10:50:231
752467996257,4cyclictest777888-21kworker/u8:3+events_unbound08:50:271
752466996254,5cyclictest846835-21latency_hist12:05:010
752472996159,1cyclictest0-21swapper/311:55:593
752467996156,4cyclictest816354-21kworker/u8:2+flush-179:010:55:251
752466996152,7cyclictest266-21systemd-journal09:20:010
752467996050,8cyclictest826394-21apt-get11:00:101
752466996043,12cyclictest266-21systemd-journal10:20:000
752466995951,5cyclictest806477-21kworker/u8:3+flush-179:010:10:200
752467995854,4cyclictest763550-21kworker/u8:2+flush-179:007:55:211
752467995853,4cyclictest763550-21kworker/u8:2+flush-179:007:45:191
752467995852,5cyclictest753975-21kworker/u8:2+flush-179:007:30:201
752466995850,6cyclictest782636-21latency_hist08:45:010
752467995752,4cyclictest842097-21kworker/u8:0+events_unbound12:20:201
75246699571,39cyclictest848437-21idleruntime-cro12:10:000
752467995652,3cyclictest827149-21kworker/u8:1+flush-179:011:15:201
752467995651,3cyclictest816354-21kworker/u8:2+events_unbound11:30:141
752467995648,6cyclictest794027-21latency_hist09:20:021
752467995646,8cyclictest839134-21apt-get11:40:121
752467995551,3cyclictest837255-21kworker/u8:1+flush-179:011:54:561
752466995549,4cyclictest816354-21kworker/u8:2+flush-179:010:40:170
752466995543,8cyclictest510-21rs:main0
752466995345,6cyclictest799058-21apt-get09:35:090
752467995248,3cyclictest809987-21kworker/u8:0+events_unbound10:11:231
752466995143,5cyclictest801998-21latency_hist09:45:010
752466995125,17cyclictest803597-21turbostat09:54:550
752466995045,3cyclictest816354-21kworker/u8:2+events_unbound11:30:000
752466995045,3cyclictest816354-21kworker/u8:2+events_unbound11:30:000
752466995038,10cyclictest818163-21apt-get10:35:110
752467994843,4cyclictest809987-21kworker/u8:0+flush-179:010:25:241
752466994842,4cyclictest774714-21kworker/u8:2+events_unbound08:20:240
752466994736,8cyclictest755551-21latency_hist07:20:010
4577091470,13ptp4l61490irq/134-eno1-TxRx-007:10:003
752467994642,3cyclictest763550-21kworker/u8:2+events_unbound08:00:251
752466994639,5cyclictest816576-21apt-get10:30:110
75246699460,43cyclictest822704-21turbostat10:54:550
752467994541,3cyclictest777888-21kworker/u8:3+flush-179:009:40:251
752467994539,4cyclictest848449-21kworker/u8:1+events_unbound12:10:221
752466994539,4cyclictest832462-21kworker/u8:3+events_unbound11:35:230
752466994537,6cyclictest826130-21latency_hist11:00:010
752467994436,6cyclictest816354-21kworker/u8:2+events_unbound11:25:231
752467994436,6cyclictest816354-21kworker/u8:2+events_unbound11:25:221
75246699448,32cyclictest832765-21apt-get11:20:100
752466994439,4cyclictest827149-21kworker/u8:1+flush-179:011:15:000
75246699440,43cyclictest0-21swapper/011:57:590
752472994336,6cyclictest857983-21turbostat12:40:013
752467994339,3cyclictest795664-21systemd-run09:25:011
752467994339,3cyclictest795664-21systemd-run09:25:001
752466994232,7cyclictest266-21systemd-journal11:20:010
752466994138,2cyclictest0-21swapper/009:21:000
752466994138,2cyclictest0-21swapper/009:20:590
752466994138,2cyclictest0-21swapper/008:00:590
752466994137,2cyclictest714-21Xorg11:31:000
752466994136,3cyclictest814744-21apt10:25:000
752466994133,6cyclictest760313-21latency_hist07:35:010
752466994124,15cyclictest815552-21latency10:25:200
752466994123,14cyclictest0-21swapper/008:05:130
75246699411,38cyclictest822688-21munin-run10:50:000
752472994038,1cyclictest0-21swapper/309:34:003
75247299400,39cyclictest0-21swapper/311:51:593
75246999400,1cyclictest0-21swapper/210:36:582
752466994036,2cyclictest763550-21kworker/u8:2+events_unbound07:50:240
752466994032,6cyclictest777288-21kworker/u8:1+flush-179:008:25:220
752466994027,11cyclictest780076-21fschecks_time08:35:150
752467993935,3cyclictest714-21Xorg09:53:581
75246799390,3cyclictest753944-21turbostat07:19:551
752466993928,8cyclictest800378-21kworker/u8:0+flush-179:009:55:250
75246699392,6cyclictest0-21swapper/011:46:590
752466993924,13cyclictest774152-21phc2sys08:15:240
75246699390,38cyclictest714-21Xorg09:00:590
75246699390,2cyclictest714-21Xorg11:44:590
752472993836,1cyclictest0-21swapper/307:50:593
752472993832,5cyclictest837279-21turbostat11:35:013
752472993832,5cyclictest832505-21turbostat11:20:003
75246999380,36cyclictest0-21swapper/207:48:592
75246999380,30cyclictest0-21swapper/210:48:002
752466993835,2cyclictest714-21Xorg07:37:590
752466993835,2cyclictest0-21swapper/012:10:590
752466993833,3cyclictest792464-21systemd-run09:15:000
752466993833,3cyclictest266-21systemd-journal07:30:000
752466993820,17cyclictest790666-21timerwakeupswit09:05:240
752469993734,2cyclictest0-21swapper/211:46:592
752469993734,2cyclictest0-21swapper/211:15:592
75246999370,35cyclictest0-21swapper/212:15:592
752466993730,5cyclictest806477-21kworker/u8:3+flush-179:010:00:210
75246699371,32cyclictest808622-21apt-get10:05:130
752472993634,1cyclictest0-21swapper/309:09:543
75247299360,35cyclictest0-21swapper/311:21:583
75247299360,35cyclictest0-21swapper/309:04:563
75247299360,35cyclictest0-21swapper/308:19:583
75247299360,1cyclictest0-21swapper/312:04:553
752469993633,2cyclictest0-21swapper/207:24:562
75246699364,26cyclictest2304-21lightdm-gtk-gre12:39:590
75246699363,28cyclictest2304-21lightdm-gtk-gre07:10:590
752466993630,4cyclictest842097-21kworker/u8:0+events_unbound12:25:010
752466993629,5cyclictest855044-21apt-get12:30:110
752466993627,7cyclictest802253-21apt-get09:45:110
752466993618,17cyclictest0-21swapper/008:30:110
75246699361,7cyclictest757151-21/usr/sbin/munin07:25:000
752472993532,2cyclictest0-21swapper/310:53:583
752472993532,2cyclictest0-21swapper/308:41:593
752469993532,2cyclictest0-21swapper/212:29:552
752469993532,2cyclictest0-21swapper/212:24:552
752469993532,2cyclictest0-21swapper/210:22:582
752469993532,2cyclictest0-21swapper/207:34:552
75246699354,8cyclictest714-21Xorg12:25:590
752466993525,7cyclictest266-21systemd-journal08:49:210
752466993520,13cyclictest0-21swapper/011:50:130
752472993432,1cyclictest0-21swapper/310:07:593
75246699341,31cyclictest908065-21snmpd08:55:030
752472993331,1cyclictest0-21swapper/312:16:593
752472993331,1cyclictest0-21swapper/308:09:003
752469993331,1cyclictest0-21swapper/210:54:592
752469993330,2cyclictest0-21swapper/211:53:592
75246699339,4cyclictest851720-21date12:20:000
752466993328,3cyclictest827758-21systemd-run11:05:010
752472993230,1cyclictest0-21swapper/307:29:553
752472993226,4cyclictest853207-21turbostat12:25:003
752469993229,2cyclictest0-21swapper/210:43:592
75246699322,5cyclictest714-21Xorg09:35:000
752466993210,3cyclictest0-21swapper/009:25:140
752472993129,1cyclictest0-21swapper/310:31:593
752472993129,1cyclictest0-21swapper/309:39:543
752469993129,1cyclictest0-21swapper/208:39:592
752469993128,2cyclictest0-21swapper/208:29:552
752467993124,6cyclictest266-21systemd-journal11:24:551
75246799311,28cyclictest714-21Xorg07:13:591
75247299300,1cyclictest0-21swapper/311:07:583
752469993028,1cyclictest0-21swapper/207:20:012
752469993027,2cyclictest0-21swapper/212:10:132
752469993027,2cyclictest0-21swapper/211:57:592
752469993027,2cyclictest0-21swapper/211:35:132
75246999300,2cyclictest0-21swapper/212:35:122
752472992927,1cyclictest0-21swapper/308:48:593
75247299290,27cyclictest0-21swapper/310:15:133
75247299290,27cyclictest0-21swapper/309:20:133
75247299290,27cyclictest0-21swapper/309:20:123
75247299290,1cyclictest0-21swapper/308:35:133
752469992926,2cyclictest0-21swapper/210:55:132
752469992926,2cyclictest0-21swapper/207:40:122
75246999290,2cyclictest0-21swapper/209:20:122
75246999290,2cyclictest0-21swapper/209:20:122
75246999290,28cyclictest0-21swapper/212:30:132
75246999290,28cyclictest0-21swapper/210:25:132
75246999290,27cyclictest0-21swapper/211:05:122
75246999290,27cyclictest0-21swapper/210:00:122
75246999290,27cyclictest0-21swapper/209:55:152
75246999290,27cyclictest0-21swapper/208:50:142
75246999290,27cyclictest0-21swapper/208:00:122
4577091290,7ptp4l441ktimers/308:05:013
752472992826,1cyclictest0-21swapper/311:48:593
752472992826,1cyclictest0-21swapper/311:25:133
752472992826,1cyclictest0-21swapper/311:25:133
752472992826,1cyclictest0-21swapper/310:55:143
752472992826,1cyclictest0-21swapper/310:35:123
752472992826,1cyclictest0-21swapper/309:45:133
752472992826,1cyclictest0-21swapper/307:15:133
752472992825,2cyclictest0-21swapper/308:55:023
75247299280,27cyclictest0-21swapper/310:10:113
75247299280,27cyclictest0-21swapper/308:25:133
75247299280,27cyclictest0-21swapper/308:10:143
75247299280,26cyclictest0-21swapper/311:40:133
752469992825,2cyclictest0-21swapper/211:20:582
752469992825,2cyclictest0-21swapper/209:47:592
752469992825,2cyclictest0-21swapper/209:01:592
752469992825,2cyclictest0-21swapper/207:25:122
75246999280,26cyclictest0-21swapper/208:15:142
75246999280,25cyclictest0-21swapper/207:14:482
4577091280,7ptp4l441ktimers/312:10:013
4577091280,6ptp4l441ktimers/311:15:003
4577091280,6ptp4l441ktimers/309:55:013
752472992725,1cyclictest0-21swapper/312:30:133
752472992725,1cyclictest0-21swapper/310:40:143
752472992725,1cyclictest0-21swapper/308:33:583
752472992725,1cyclictest0-21swapper/308:20:123
75247299270,1cyclictest0-21swapper/310:00:123
752469992725,1cyclictest0-21swapper/210:35:002
752469992725,1cyclictest0-21swapper/209:35:002
752469992724,2cyclictest0-21swapper/211:10:592
752469992724,2cyclictest0-21swapper/209:18:592
75246999270,26cyclictest0-21swapper/208:14:592
75246999270,25cyclictest0-21swapper/208:47:592
75246999270,24cyclictest0-21swapper/210:14:562
4577091270,6ptp4l441ktimers/307:35:013
231999270,15rtkit-daemon752379-21munin-run07:10:010
752472992624,1cyclictest0-21swapper/307:44:593
752472992623,2cyclictest816333-21turbostat10:30:013
752469992624,1cyclictest0-21swapper/212:08:592
752469992624,1cyclictest0-21swapper/208:44:592
75246999260,24cyclictest0-21swapper/211:40:592
75246999260,24cyclictest0-21swapper/211:27:592
75246999260,24cyclictest0-21swapper/211:27:592
75246999260,24cyclictest0-21swapper/210:16:592
75246999260,24cyclictest0-21swapper/209:50:122
4577091260,6ptp4l61490irq/134-eno1-TxRx-012:15:003
4577091260,6ptp4l61490irq/134-eno1-TxRx-008:55:003
4577091260,6ptp4l441ktimers/311:40:003
4577091260,6ptp4l441ktimers/310:00:003
4577091260,6ptp4l441ktimers/309:30:003
4577091260,6ptp4l441ktimers/307:24:563
4577091260,5ptp4l441ktimers/312:30:013
752472992523,1cyclictest0-21swapper/309:13:583
75247299250,24cyclictest0-21swapper/307:36:593
75247299250,24cyclictest0-21swapper/307:14:003
752469992523,1cyclictest0-21swapper/208:24:592
752469992522,2cyclictest0-21swapper/207:56:592
752469992522,2cyclictest0-21swapper/207:52:592
752469992522,2cyclictest0-21swapper/207:40:002
75246999250,2cyclictest0-21swapper/209:12:582
75246999250,23cyclictest0-21swapper/209:29:592
4577091250,6ptp4l61490irq/134-eno1-TxRx-007:50:003
4577091250,5ptp4l61490irq/134-eno1-TxRx-011:05:023
4577091250,5ptp4l441ktimers/310:50:003
4577091250,5ptp4l441ktimers/309:19:563
4577091250,4ptp4l441ktimers/309:45:013
752472992422,1cyclictest0-21swapper/307:59:543
752472992321,1cyclictest0-21swapper/310:21:593
752469992321,1cyclictest0-21swapper/208:56:582
752469992321,1cyclictest0-21swapper/208:31:592
752469992320,2cyclictest0-21swapper/210:06:592
752469992320,2cyclictest0-21swapper/209:06:002
752469992119,1cyclictest0-21swapper/212:00:122
752469992118,2cyclictest0-21swapper/211:31:592
752469991917,1cyclictest0-21swapper/211:01:592
752469991916,2cyclictest0-21swapper/209:38:592
752467991712,3cyclictest0-21swapper/107:10:011
752469991513,1cyclictest0-21swapper/208:05:592
75246999107,2cyclictest0-21swapper/209:40:122
7524699930,2cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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