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2026-04-18 - 16:38
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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 highest latencies:
System rackeslot6.osadl.org (updated Sat Apr 18, 2026 12:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2371173999186,4cyclictest2437511-21kworker/u8:3+events_unbound10:45:230
2371173999184,5cyclictest2434359-21latency_hist10:25:010
2371173998783,3cyclictest2451914-21kworker/u8:3+flush-179:011:34:550
2371173998782,4cyclictest2440709-21kworker/u8:1+events_unbound11:05:240
2371173998778,6cyclictest2403841-21latency_hist08:50:010
2371177998680,5cyclictest2440709-21kworker/u8:1+flush-179:011:24:561
2371177998678,6cyclictest2443898-21latency_hist10:55:011
2371177998578,5cyclictest2414993-21latency_hist09:25:021
2371173998577,6cyclictest2422949-21latency_hist09:50:020
2371177998171,4cyclictest2390620-21kworker/u8:2+events_unbound08:10:001
2371177998168,10cyclictest1213033-21systemd-journal08:32:551
2371173998176,4cyclictest2437511-21kworker/u8:3+events_unbound11:00:240
2371173998176,4cyclictest2437511-21kworker/u8:3+events_unbound11:00:240
2371173998176,4cyclictest2434912-21kworker/u8:2+flush-179:010:39:550
2371173998173,6cyclictest2419771-21latency_hist09:40:010
2371177998072,5cyclictest2388739-21latency_hist08:05:001
2371173998076,3cyclictest2422925-21kworker/u8:0+events_unbound10:14:560
2371173998075,4cyclictest2471198-21kworker/u8:2+events_unbound12:35:260
2371173998075,4cyclictest2447085-21kworker/u8:0+events_unbound11:50:240
2371173998070,7cyclictest2400704-21kworker/u8:3+flush-179:008:55:010
2371173998070,4cyclictest2447085-21kworker/u8:0+events_unbound11:35:250
2371177997857,10cyclictest2451914-21kworker/u8:3+flush-179:011:35:001
2371177997755,19cyclictest2397214-21latency_hist08:30:011
2371173997665,4cyclictest2387114-21kworker/u8:1+events_unbound08:20:240
2371177997568,5cyclictest2471198-21kworker/u8:2+flush-179:012:19:561
2371177997567,6cyclictest2451877-21latency_hist11:20:011
2371177997566,6cyclictest2462982-21kworker/u8:2+flush-179:012:09:551
2371173997570,4cyclictest2462982-21kworker/u8:2+events_unbound11:55:240
2371173997469,4cyclictest2400704-21kworker/u8:3+events_unbound09:05:450
237117399741,71cyclictest1-21systemd10:05:000
2371177997165,5cyclictest2440708-21kworker/u8:0+flush-179:010:45:001
2371177997062,6cyclictest2410210-21latency_hist09:10:011
2371173997066,3cyclictest2447085-21kworker/u8:0+events_unbound12:26:540
2371173997065,4cyclictest2451838-21kworker/u8:2+events_unbound11:18:570
2371173997065,4cyclictest2400704-21kworker/u8:3+events_unbound08:56:560
2371173996864,3cyclictest2400704-21kworker/u8:3+events_unbound08:40:230
2371173996864,3cyclictest2397744-21kworker/u8:1+flush-179:010:09:560
2371173996863,4cyclictest2434912-21kworker/u8:2+events_unbound10:30:240
2371173996863,4cyclictest2434912-21kworker/u8:2+events_unbound10:25:230
2371173996863,4cyclictest2400704-21kworker/u8:3+events_unbound09:27:560
2371177996761,4cyclictest2400704-21kworker/u8:3+flush-179:008:45:261
2371173996762,4cyclictest2447085-21kworker/u8:0+events_unbound12:07:550
2371173996762,4cyclictest2382352-21kworker/u8:3+events_unbound07:51:560
2371173996762,4cyclictest2364739-21kworker/u8:1+flush-179:007:30:560
2371173996761,5cyclictest2460379-21kworker/u8:1+flush-179:011:48:570
2371173996662,3cyclictest2440709-21kworker/u8:1+events_unbound10:55:220
2371173996661,4cyclictest2451914-21kworker/u8:3+events_unbound11:25:560
2371173996661,4cyclictest2412032-21kworker/u8:0+events_unbound09:20:240
2371173996661,4cyclictest2372643-21kworker/u8:2+events_unbound07:47:570
2371173996661,4cyclictest2372643-21kworker/u8:2+events_unbound07:47:570
2371173996661,4cyclictest2364739-21kworker/u8:1+events_unbound07:25:560
2371177996559,4cyclictest2440709-21kworker/u8:1+flush-179:011:10:001
2371177996552,12cyclictest2451914-21kworker/u8:3+flush-179:011:40:001
2371173996561,3cyclictest2440709-21kworker/u8:1+events_unbound10:42:560
2371173996560,4cyclictest2467432-21kworker/u8:1+events_unbound12:13:570
2371173996557,3cyclictest2467432-21kworker/u8:1+events_unbound12:15:040
2371179996461,2cyclictest0-21swapper/208:31:582
2371177996457,4cyclictest2397744-21kworker/u8:1+flush-179:009:20:001
2371177996456,6cyclictest2387161-21latency_hist08:00:011
2371173996460,3cyclictest2397744-21kworker/u8:1+events_unbound08:33:560
2371173996455,3cyclictest2400704-21kworker/u8:3+events_unbound09:30:200
2371177996360,2cyclictest0-21swapper/109:58:591
2371177996353,8cyclictest2471501-21apt-get12:20:111
2371173996352,9cyclictest2387407-21apt-get08:00:120
2371173996257,4cyclictest2447085-21kworker/u8:0+events_unbound12:00:550
2371177996156,4cyclictest2422925-21kworker/u8:0+flush-179:010:29:551
2371177996153,6cyclictest2427730-21latency_hist10:05:011
2371177996151,7cyclictest2416613-21kworker/u8:2+flush-179:009:40:221
2371173996157,3cyclictest2440709-21kworker/u8:1+events_unbound11:10:590
2371173996157,3cyclictest2422925-21kworker/u8:0+events_unbound09:53:560
2371173996157,3cyclictest2397744-21kworker/u8:1+events_unbound09:04:550
2371173996157,3cyclictest2364739-21kworker/u8:1+events_unbound07:23:560
2371173996156,4cyclictest2422925-21kworker/u8:0+events_unbound09:56:560
2371173996156,4cyclictest2387114-21kworker/u8:1+events_unbound08:06:560
2371173996055,4cyclictest2471198-21kworker/u8:2+events_unbound12:20:180
2371173996055,4cyclictest2387114-21kworker/u8:1+events_unbound08:14:550
2371177995949,8cyclictest2372643-21kworker/u8:2+flush-179:007:50:011
2371177995949,8cyclictest2372643-21kworker/u8:2+flush-179:007:50:001
2371173995955,3cyclictest2440709-21kworker/u8:1+events_unbound11:22:570
2371173995955,3cyclictest2397744-21kworker/u8:1+events_unbound09:12:580
2371177995850,6cyclictest2364739-21kworker/u8:1+flush-179:007:20:251
2371177995848,7cyclictest2447085-21kworker/u8:0+flush-179:011:05:011
2371177995848,7cyclictest2447085-21kworker/u8:0+flush-179:011:05:011
2371173995854,3cyclictest2447085-21kworker/u8:0+events_unbound11:40:250
2371173995853,4cyclictest2372698-21kworker/u8:3+events_unbound07:17:560
2371177995746,8cyclictest1213033-21systemd-journal12:28:551
2371173995753,3cyclictest2440709-21kworker/u8:1+events_unbound10:50:250
2371173995753,3cyclictest2422925-21kworker/u8:0+events_unbound10:17:560
2371173995752,4cyclictest2387055-21kworker/u8:0+events_unbound07:55:560
2371177995644,10cyclictest1213033-21systemd-journal07:38:541
2371173995550,4cyclictest2471198-21kworker/u8:2+events_unbound12:32:560
2371173995550,4cyclictest2372643-21kworker/u8:2+events_unbound07:13:560
2371173995450,3cyclictest2387114-21kworker/u8:1+events_unbound08:17:030
2371177995345,5cyclictest1213033-21systemd-journal07:15:111
2371173995348,4cyclictest2372643-21kworker/u8:2+events_unbound07:44:540
2371177995248,3cyclictest2400704-21kworker/u8:3+flush-179:009:14:551
2371177995244,5cyclictest2466202-21latency_hist12:05:001
2371173995248,3cyclictest2390620-21kworker/u8:2+events_unbound08:35:150
2371177995145,4cyclictest2447085-21kworker/u8:0+events_unbound12:00:011
2371177995144,5cyclictest2400704-21kworker/u8:3+flush-179:009:05:001
2371177995144,4cyclictest2477605-21sendmail12:40:001
2371177995042,6cyclictest1213033-21systemd-journal11:55:011
2371177995040,8cyclictest1213033-21systemd-journal08:58:541
4577091480,13ptp4l441ktimers/307:09:593
2371177994740,5cyclictest2372643-21kworker/u8:2+events_unbound07:45:011
2371182994644,1cyclictest0-21swapper/308:31:583
2371177994641,4cyclictest2400704-21kworker/u8:3+flush-179:009:34:551
2371177994638,5cyclictest2405428-21latency_hist08:55:021
2371177994637,7cyclictest2431397-21/usr/sbin/munin10:15:181
2371173994642,3cyclictest2397744-21kworker/u8:1+events_unbound09:16:560
2371173994641,4cyclictest2397744-21kworker/u8:1+events_unbound09:42:570
2371177994534,8cyclictest1213033-21systemd-journal10:40:011
2371173994541,3cyclictest2390620-21kworker/u8:2+events_unbound08:26:560
2371177994436,6cyclictest2372643-21kworker/u8:2+flush-179:007:50:231
2371177994429,11cyclictest1213033-21systemd-journal11:49:551
2371173994339,3cyclictest2364739-21kworker/u8:1+events_unbound07:36:560
2371177994235,5cyclictest2400704-21kworker/u8:3+flush-179:009:25:211
237117799422,36cyclictest2418423-21apt-get09:35:141
237118299410,39cyclictest2448689-21turbostat11:10:003
237118299410,1cyclictest0-21swapper/309:44:593
2371179994138,2cyclictest0-21swapper/210:56:592
2371179993936,2cyclictest0-21swapper/209:22:592
2371179993935,2cyclictest0-21swapper/208:44:592
2371177993935,2cyclictest714-21Xorg10:31:591
2371179993835,2cyclictest0-21swapper/209:12:582
2371179993834,2cyclictest0-21swapper/211:39:542
237117999380,36cyclictest0-21swapper/208:35:592
2371177993835,2cyclictest0-21swapper/111:29:591
2371177993835,2cyclictest0-21swapper/109:53:591
2371177993830,6cyclictest2440709-21kworker/u8:1+flush-179:011:10:211
2371177993829,7cyclictest2358093-21kworker/u8:0+flush-179:007:10:221
237117799380,37cyclictest714-21Xorg09:46:591
2371182993732,4cyclictest2435959-21turbostat10:30:003
2371179993735,1cyclictest0-21swapper/212:20:002
2371179993734,2cyclictest0-21swapper/212:08:592
2371179993734,2cyclictest0-21swapper/210:35:592
2371179993734,2cyclictest0-21swapper/208:46:592
2371179993734,2cyclictest0-21swapper/207:34:542
2371179993733,2cyclictest0-21swapper/211:10:592
2371177993733,3cyclictest714-21Xorg08:38:591
2371177993732,4cyclictest2392186-21apt-get08:15:041
2371177993727,7cyclictest1213033-21systemd-journal10:57:551
237117799370,36cyclictest0-21swapper/112:14:551
237118299360,35cyclictest0-21swapper/311:42:593
237118299360,35cyclictest0-21swapper/308:50:593
237118299360,1cyclictest0-21swapper/312:27:583
237117999360,1cyclictest0-21swapper/212:22:592
237117999360,1cyclictest0-21swapper/210:09:552
2371177993632,3cyclictest2387114-21kworker/u8:1+flush-179:008:20:191
2371182993533,1cyclictest0-21swapper/311:19:593
237118299350,34cyclictest0-21swapper/308:39:563
237118299350,34cyclictest0-21swapper/308:04:553
237118299350,1cyclictest0-21swapper/310:01:593
237118299350,1cyclictest0-21swapper/307:15:143
2371179993532,2cyclictest0-21swapper/212:01:592
2371177993532,2cyclictest0-21swapper/110:14:551
2371177993531,3cyclictest281ktimers/110:24:581
2371177993529,4cyclictest2364739-21kworker/u8:1+events_unbound07:25:161
2371177993528,5cyclictest2459834-21latency_hist11:45:011
2371177993528,5cyclictest2379063-21sh07:35:001
2371177993526,7cyclictest1213033-21systemd-journal12:35:001
2371182993432,1cyclictest0-21swapper/309:09:543
2371179993431,2cyclictest0-21swapper/210:04:552
2371177993429,3cyclictest0-21swapper/110:10:001
237117799341,30cyclictest0-21swapper/108:40:111
2371182993331,1cyclictest0-21swapper/312:21:593
237118299330,1cyclictest0-21swapper/310:55:143
237118299330,1cyclictest0-21swapper/310:10:033
2371179993330,2cyclictest0-21swapper/211:05:592
2371179993330,2cyclictest0-21swapper/209:55:582
2371179993330,2cyclictest0-21swapper/208:23:592
237117999330,27cyclictest0-21swapper/209:05:132
2371182993227,4cyclictest2432764-21turbostat10:20:003
2371182993225,6cyclictest0-21swapper/312:00:123
237118299320,2cyclictest0-21swapper/310:30:133
237118299320,26cyclictest0-21swapper/309:21:593
2371179993229,2cyclictest0-21swapper/208:12:592
2371179993226,5cyclictest0-21swapper/210:10:042
2371182993126,4cyclictest2458243-21turbostat11:40:003
2371179993128,2cyclictest0-21swapper/207:21:592
2371179993124,6cyclictest0-21swapper/208:05:022
2371179993124,6cyclictest0-21swapper/208:05:012
237117999310,21cyclictest0-21swapper/212:25:132
2371182993028,1cyclictest0-21swapper/309:39:553
2371182993028,1cyclictest0-21swapper/308:11:593
2371182993023,6cyclictest0-21swapper/307:50:133
237118299300,28cyclictest0-21swapper/308:45:133
2371179993027,2cyclictest0-21swapper/211:40:132
2371179993027,2cyclictest0-21swapper/209:35:152
2371179993027,2cyclictest0-21swapper/209:18:002
2371179993027,2cyclictest0-21swapper/207:52:002
2371179993027,2cyclictest0-21swapper/207:42:002
237117999300,2cyclictest0-21swapper/211:20:122
237117999300,2cyclictest0-21swapper/210:20:122
237117999300,28cyclictest0-21swapper/211:55:012
237117999300,28cyclictest0-21swapper/208:52:592
2371177993027,2cyclictest0-21swapper/110:48:591
237118299290,28cyclictest0-21swapper/311:55:133
237118299290,28cyclictest0-21swapper/308:05:023
237118299290,27cyclictest0-21swapper/310:20:123
237118299290,1cyclictest0-21swapper/309:48:003
2371179992926,2cyclictest0-21swapper/211:45:132
2371179992926,2cyclictest0-21swapper/207:10:592
237117999290,27cyclictest0-21swapper/207:25:142
4577091280,7ptp4l441ktimers/310:00:003
4577091280,6ptp4l441ktimers/311:00:013
4577091280,6ptp4l441ktimers/311:00:013
4577091280,6ptp4l441ktimers/310:50:003
2371182992825,2cyclictest0-21swapper/309:10:153
237118299280,26cyclictest0-21swapper/307:20:133
2371179992825,2cyclictest0-21swapper/212:35:142
2371179992825,2cyclictest0-21swapper/212:30:122
2371179992825,2cyclictest0-21swapper/210:17:592
2371179992825,2cyclictest0-21swapper/209:50:592
2371179992825,2cyclictest0-21swapper/207:36:592
2371179992820,7cyclictest0-21swapper/208:16:582
237117999280,26cyclictest0-21swapper/211:55:122
237117999280,26cyclictest0-21swapper/210:25:132
237117999280,26cyclictest0-21swapper/209:32:592
237117999280,26cyclictest0-21swapper/208:29:592
237117999280,25cyclictest0-21swapper/210:44:592
4577091270,6ptp4l61490irq/134-eno1-TxRx-011:30:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-007:40:013
4577091270,6ptp4l441ktimers/310:55:003
4577091270,6ptp4l441ktimers/310:45:013
4577091270,6ptp4l441ktimers/309:35:013
2371182992725,1cyclictest0-21swapper/308:15:043
2371182992724,2cyclictest0-21swapper/310:09:563
2371182992724,2cyclictest0-21swapper/307:27:003
237118299270,26cyclictest0-21swapper/310:35:143
237118299270,26cyclictest0-21swapper/308:44:593
237118299270,25cyclictest0-21swapper/311:32:583
237118299270,1cyclictest0-21swapper/311:20:123
2371179992724,2cyclictest0-21swapper/209:00:592
2371179992724,2cyclictest0-21swapper/207:47:592
2371179992724,2cyclictest0-21swapper/207:47:582
2371179992724,2cyclictest0-21swapper/207:15:592
237117999270,1cyclictest0-21swapper/210:50:592
2371177992717,8cyclictest1213033-21systemd-journal08:15:011
4577091260,7ptp4l441ktimers/307:35:003
4577091260,6ptp4l61490irq/134-eno1-TxRx-009:55:013
4577091260,6ptp4l61490irq/134-eno1-TxRx-008:24:553
4577091260,6ptp4l61490irq/134-eno1-TxRx-007:15:013
4577091260,6ptp4l441ktimers/311:55:013
4577091260,6ptp4l441ktimers/309:29:563
4577091260,6ptp4l441ktimers/309:19:553
4577091260,6ptp4l441ktimers/307:59:593
4577091260,5ptp4l441ktimers/309:05:003
4577091260,5ptp4l441ktimers/307:50:013
4577091260,5ptp4l441ktimers/307:50:013
237118299260,25cyclictest2467798-21turbostat12:09:593
237118299260,24cyclictest0-21swapper/308:56:593
2371179992624,1cyclictest0-21swapper/210:34:592
2371179992623,2cyclictest0-21swapper/209:28:582
4577091250,6ptp4l61490irq/134-eno1-TxRx-012:35:003
4577091250,6ptp4l61490irq/134-eno1-TxRx-011:15:003
4577091250,6ptp4l61490irq/134-eno1-TxRx-007:45:003
4577091250,5ptp4l61490irq/134-eno1-TxRx-012:20:013
4577091250,5ptp4l441ktimers/312:15:013
2371179992522,2cyclictest0-21swapper/208:55:132
2371179992517,2cyclictest0-21swapper/211:32:592
4577091240,5ptp4l61490irq/134-eno1-TxRx-012:39:553
2371179992421,2cyclictest0-21swapper/209:41:582
4577091230,4ptp4l61490irq/134-eno1-TxRx-011:49:553
4577091230,4ptp4l61490irq/134-eno1-TxRx-008:29:553
2371177992318,3cyclictest0-21swapper/107:10:011
2371173992320,2cyclictest0-21swapper/007:10:010
2371179992017,2cyclictest0-21swapper/211:26:592
2371179991915,2cyclictest0-21swapper/211:00:592
2371179991915,2cyclictest0-21swapper/211:00:592
2371179991815,2cyclictest0-21swapper/209:46:592
2371179991714,2cyclictest0-21swapper/211:18:592
237117999140,2cyclictest0-21swapper/207:59:062
237117999129,2cyclictest0-21swapper/212:10:132
23711799996,2cyclictest0-21swapper/210:48:592
23711799930,2cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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