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2026-05-24 - 00:19
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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 May 23, 2026 12:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28359369911199,9cyclictest2873106-21latency_hist09:05:010
283593699110103,5cyclictest2887690-21latency_hist09:50:010
283593699110103,5cyclictest2887690-21latency_hist09:50:010
28359369910898,7cyclictest2897253-21latency_hist10:20:010
28359369910894,11cyclictest1213033-21systemd-journal11:59:590
2835936991080,106cyclictest1-21systemd10:40:000
28359369910693,10cyclictest2923244-21apt-get11:40:000
28359409910599,4cyclictest2898821-21kworker/u8:1+flush-179:010:30:261
28359409910597,7cyclictest2939466-21kworker/u8:3+flush-179:012:40:001
28359409910498,4cyclictest2920089-21kworker/u8:3+flush-179:012:15:001
28359409910397,4cyclictest2852646-21kworker/u8:1+events_unbound08:05:001
28359369910089,9cyclictest2873603-21/usr/sbin/munin09:05:230
2835940999989,7cyclictest2925096-21latency_hist11:45:011
2835940999791,4cyclictest2910546-21kworker/u8:3+events_unbound11:10:011
2835940999791,4cyclictest2879768-21kworker/u8:1+flush-179:009:30:001
2835940999790,5cyclictest2937835-21latency_hist12:25:021
2835940999691,4cyclictest2876523-21kworker/u8:0+events_unbound10:25:261
2835940999287,4cyclictest2908619-21kworker/u8:1+events_unbound11:55:241
2835940999282,8cyclictest2892730-21apt-get10:05:111
2835940999186,4cyclictest2870919-21kworker/u8:0+flush-179:008:55:261
2835940999182,6cyclictest2898821-21kworker/u8:1+events_unbound10:35:141
2835936999181,7cyclictest2915271-21latency_hist11:15:010
2835940999084,5cyclictest2814660-21kworker/u8:1+flush-179:007:20:011
2835936998981,5cyclictest2939423-21latency_hist12:30:010
2835936998981,5cyclictest2898821-21kworker/u8:1+flush-179:010:30:150
2835940998781,4cyclictest2916915-21kworker/u8:2+events_unbound11:25:181
2835940998778,7cyclictest2921643-21latency_hist11:35:011
2835940998679,5cyclictest2941010-21latency_hist12:35:001
2835936998678,6cyclictest2852411-21latency_hist08:00:020
2835940998580,4cyclictest2876523-21kworker/u8:0+events_unbound09:40:241
2835940998478,5cyclictest2861987-21kworker/u8:3+flush-179:008:30:241
2835940998476,6cyclictest2900668-21kworker/u8:2+flush-179:010:40:201
2835936998479,4cyclictest2845765-21kworker/u8:1+flush-179:007:40:000
2835936998474,7cyclictest2892487-21latency_hist10:05:010
2835940998377,4cyclictest2840596-21latency_hist07:25:021
2835940998277,4cyclictest2920089-21kworker/u8:3+flush-179:012:05:011
2835940998175,4cyclictest2920089-21kworker/u8:3+flush-179:011:50:201
2835940998174,5cyclictest2843762-21kworker/u8:3+flush-179:008:00:001
2835940998075,3cyclictest2910473-21kworker/u8:0+events_unbound11:05:001
2835940998070,8cyclictest2926681-21latency_hist11:50:011
2835936998069,8cyclictest2916915-21kworker/u8:2+flush-179:011:30:230
2835940997971,6cyclictest2870919-21kworker/u8:0+events_unbound09:05:011
2835940997873,4cyclictest2934616-21kworker/u8:1+events_unbound12:25:241
2835940997870,7cyclictest2821074-21kworker/u8:0+flush-179:007:15:001
2835936997869,7cyclictest2821074-21kworker/u8:0+events_unbound07:20:250
2835936997868,8cyclictest2860622-21apt-get08:25:120
2835940997771,5cyclictest2900668-21kworker/u8:2+events_unbound10:45:191
2835940997768,6cyclictest2887725-21kworker/u8:3+events_unbound10:00:221
2835940997768,4cyclictest2908619-21kworker/u8:1+events_unbound11:35:181
2835940997767,8cyclictest510-21rs:main1
2835936997772,4cyclictest2843762-21kworker/u8:3+flush-179:007:45:140
2835940997568,5cyclictest2920089-21kworker/u8:3+events_unbound12:15:191
2835940997568,5cyclictest2849213-21latency_hist07:50:011
2835940997468,4cyclictest2843416-21kworker/u8:0+flush-179:008:20:191
2835940997466,5cyclictest2876523-21kworker/u8:0+flush-179:010:50:211
2835940997466,5cyclictest2855021-21kworker/u8:2+flush-179:008:15:211
2835940997368,4cyclictest2861987-21kworker/u8:3+flush-179:008:35:261
2835940997353,5cyclictest2876523-21kworker/u8:0+events_unbound09:35:161
2835936997364,7cyclictest2879733-21latency_hist09:25:010
2835936997364,5cyclictest2843762-21kworker/u8:3+events_unbound07:45:020
2835936997364,5cyclictest2843762-21kworker/u8:3+events_unbound07:45:010
2835940997267,4cyclictest2876523-21kworker/u8:0+flush-179:010:15:251
2835940997163,5cyclictest2843416-21kworker/u8:0+flush-179:008:10:221
2835936997159,10cyclictest2866992-21apt-get08:45:120
2835941997038,2cyclictest0-21swapper/208:26:592
2835940997065,4cyclictest2876578-21kworker/u8:2+events_unbound09:20:221
2835940997065,3cyclictest2886655-21kworker/u8:2+flush-179:010:10:211
2835940997060,7cyclictest1213033-21systemd-journal08:05:211
2835936997063,5cyclictest2842440-21apt-get07:30:110
2835936997060,8cyclictest2876523-21kworker/u8:0+flush-179:009:40:010
2835940996964,3cyclictest2861987-21kworker/u8:3+events_unbound08:50:201
2835940996963,4cyclictest2930539-21kworker/u8:0+flush-179:012:05:211
2835936996961,6cyclictest2835828-21kworker/u8:2+flush-179:007:25:230
2835940996862,5cyclictest2887725-21kworker/u8:3+flush-179:009:55:261
2835940996856,9cyclictest2881865-21diskstats09:30:151
2835936996860,6cyclictest2898841-21latency_hist10:25:010
2835936996859,7cyclictest2916868-21latency_hist11:20:010
2835940996660,5cyclictest2876523-21kworker/u8:0+events_unbound10:20:171
2835936996660,4cyclictest2910473-21kworker/u8:0+flush-179:011:05:220
2835936996658,6cyclictest2930539-21kworker/u8:0+flush-179:012:15:160
2835940996559,5cyclictest2843416-21kworker/u8:0+events_unbound07:35:031
2835936996560,4cyclictest2920089-21kworker/u8:3+events_unbound12:10:220
2835936996560,4cyclictest2821074-21kworker/u8:0+flush-179:007:10:160
2835936996558,4cyclictest2886655-21kworker/u8:2+flush-179:010:10:210
4577091640,13ptp4l441ktimers/307:10:013
2835940996458,4cyclictest2861987-21kworker/u8:3+events_unbound09:10:201
2835940996457,4cyclictest2916915-21kworker/u8:2+events_unbound11:20:201
2835940996454,5cyclictest2843762-21kworker/u8:3+events_unbound07:50:211
2835936996457,5cyclictest2907066-21latency_hist10:50:000
2835941996360,2cyclictest0-21swapper/208:02:592
2835940996348,12cyclictest2847381-21apt-get07:45:001
2835940996348,12cyclictest2847381-21apt-get07:45:001
2835936996357,5cyclictest2843416-21kworker/u8:0+flush-179:008:05:260
2835936996353,5cyclictest2855021-21kworker/u8:2+flush-179:008:15:220
2835936996352,9cyclictest2936793-21diskstats12:20:150
2835936996257,4cyclictest2916915-21kworker/u8:2+flush-179:011:20:150
2835936996256,4cyclictest2843416-21kworker/u8:0+events_unbound08:10:180
2835936996154,5cyclictest2861987-21kworker/u8:3+flush-179:008:40:170
2835936996153,6cyclictest1213033-21systemd-journal09:42:040
2835940996053,5cyclictest2886655-21kworker/u8:2+events_unbound09:45:201
2835940996053,5cyclictest2886655-21kworker/u8:2+events_unbound09:45:201
2835936996053,5cyclictest2930539-21kworker/u8:0+flush-179:012:05:220
2835936996050,8cyclictest2930132-21apt-get12:00:110
2835945995957,1cyclictest0-21swapper/308:02:583
2835936995953,5cyclictest2876523-21kworker/u8:0+events_unbound09:15:240
2835936995953,4cyclictest2910473-21kworker/u8:0+flush-179:011:00:060
2835936995952,5cyclictest2879768-21kworker/u8:1+flush-179:009:50:230
2835936995949,8cyclictest2920089-21kworker/u8:3+events_unbound11:45:170
2835940995853,4cyclictest2910473-21kworker/u8:0+events_unbound11:15:231
2835940995853,4cyclictest2861987-21kworker/u8:3+events_unbound08:40:161
2835940995753,3cyclictest2855021-21kworker/u8:2+flush-179:008:45:251
2835936995751,4cyclictest2855021-21kworker/u8:2+flush-179:008:20:120
2835936995750,5cyclictest2916915-21kworker/u8:2+flush-179:011:25:210
2835936995546,6cyclictest2853996-21latency_hist08:05:010
2835940995448,4cyclictest2843416-21kworker/u8:0+flush-179:008:25:201
2835936995449,4cyclictest2887725-21kworker/u8:3+events_unbound09:55:250
2835940995345,6cyclictest2887725-21kworker/u8:3+flush-179:009:55:001
2835936995348,4cyclictest2910473-21kworker/u8:0+flush-179:010:59:560
2835936995348,4cyclictest2876523-21kworker/u8:0+flush-179:009:14:550
2835940995247,4cyclictest2861987-21kworker/u8:3+events_unbound09:00:231
2835936995246,4cyclictest2861987-21kworker/u8:3+flush-179:008:55:170
2835936995146,4cyclictest2920089-21kworker/u8:3+flush-179:011:50:170
2835936995146,4cyclictest2876523-21kworker/u8:0+events_unbound10:25:200
2835936995146,4cyclictest2843762-21kworker/u8:3+flush-179:007:50:220
2835940995046,3cyclictest2876523-21kworker/u8:0+flush-179:009:15:251
2835940994945,3cyclictest2908619-21kworker/u8:1+flush-179:010:55:231
2835936994944,4cyclictest2934616-21kworker/u8:1+flush-179:012:35:210
2835936994844,3cyclictest2900668-21kworker/u8:2+flush-179:010:52:060
2835936994843,4cyclictest2900668-21kworker/u8:2+events_unbound10:40:250
2835936994742,4cyclictest2876523-21kworker/u8:0+events_unbound09:25:150
2835936994641,4cyclictest2934616-21kworker/u8:1+flush-179:012:30:220
2835936994641,4cyclictest2861987-21kworker/u8:3+events_unbound08:35:250
2835936994640,4cyclictest2821074-21kworker/u8:0+flush-179:007:10:020
2835936994638,6cyclictest2861987-21kworker/u8:3+events_unbound08:50:180
2835940994540,4cyclictest2835828-21kworker/u8:2+events_unbound07:30:161
2835936994536,7cyclictest510-21rs:main0
2835945994436,6cyclictest2921648-21turbostat11:35:003
283594199440,41cyclictest0-21swapper/211:57:592
283594199430,2cyclictest0-21swapper/209:39:552
2835936994236,5cyclictest2821074-21kworker/u8:0+flush-179:007:15:250
2835945994139,1cyclictest0-21swapper/308:46:593
283594599410,40cyclictest0-21swapper/311:57:593
283594599410,39cyclictest2871502-21turbostat09:00:003
2835941994138,2cyclictest0-21swapper/211:10:582
2835936994132,7cyclictest1213033-21systemd-journal08:35:010
2835945994034,5cyclictest2898850-21turbostat10:25:003
283594599400,39cyclictest0-21swapper/309:09:593
283594199400,38cyclictest0-21swapper/209:09:592
283594199400,35cyclictest0-21swapper/209:34:552
2835945993936,2cyclictest0-21swapper/311:10:593
2835941993935,2cyclictest0-21swapper/212:07:592
2835941993935,2cyclictest0-21swapper/207:39:552
283594199390,36cyclictest0-21swapper/212:39:562
2835936993934,4cyclictest2876523-21kworker/u8:0+flush-179:009:30:150
2835945993836,1cyclictest0-21swapper/308:26:593
283594599380,37cyclictest0-21swapper/309:34:553
283594599380,1cyclictest0-21swapper/310:14:553
2835941993834,2cyclictest0-21swapper/212:17:592
2835941993834,2cyclictest0-21swapper/208:06:592
283594199380,36cyclictest0-21swapper/211:27:592
283594199380,36cyclictest0-21swapper/208:50:592
2835936993834,3cyclictest2876523-21kworker/u8:0+events_unbound10:05:200
2835945993731,5cyclictest2905218-21turbostat10:49:543
283594599370,35cyclictest0-21swapper/312:04:593
2835941993733,2cyclictest0-21swapper/210:49:552
283594199370,35cyclictest0-21swapper/208:39:002
283594199370,2cyclictest0-21swapper/212:05:002
2835945993634,1cyclictest0-21swapper/308:38:593
2835945993634,1cyclictest0-21swapper/307:42:003
2835945993634,1cyclictest0-21swapper/307:41:593
2835941993632,2cyclictest0-21swapper/210:25:592
283594199360,2cyclictest0-21swapper/210:14:562
2835945993533,1cyclictest0-21swapper/312:08:003
2835945993533,1cyclictest0-21swapper/309:55:593
2835945993533,1cyclictest0-21swapper/308:06:593
2835941993532,2cyclictest0-21swapper/209:59:552
2835941993531,2cyclictest0-21swapper/211:04:562
2835941993531,2cyclictest0-21swapper/210:19:562
2835940993531,3cyclictest2908619-21kworker/u8:1+events_unbound11:14:551
2835945993432,1cyclictest0-21swapper/312:17:583
2835945993432,1cyclictest0-21swapper/307:39:553
2835941993330,2cyclictest0-21swapper/211:20:002
2835941993329,2cyclictest0-21swapper/208:16:592
2835941993329,2cyclictest0-21swapper/207:50:592
2835945993230,1cyclictest0-21swapper/310:25:593
2835945993129,1cyclictest0-21swapper/310:19:563
2835941993128,2cyclictest0-21swapper/207:43:002
2835941993128,2cyclictest0-21swapper/207:42:592
2835941993127,2cyclictest0-21swapper/210:34:562
283594199310,2cyclictest0-21swapper/210:00:142
283594199310,29cyclictest0-21swapper/210:45:012
4577091300,7ptp4l441ktimers/309:30:013
2835945993027,2cyclictest0-21swapper/311:04:563
283594599300,29cyclictest0-21swapper/310:00:143
283594599300,28cyclictest0-21swapper/307:45:023
2835941993027,2cyclictest0-21swapper/211:40:032
2835941993027,2cyclictest0-21swapper/209:20:132
283594199300,2cyclictest0-21swapper/207:45:022
283594199300,28cyclictest0-21swapper/212:10:102
283594199300,27cyclictest0-21swapper/211:45:122
4577091290,7ptp4l61490irq/134-eno1-TxRx-011:25:003
2835945992927,1cyclictest0-21swapper/311:20:003
2835945992927,1cyclictest0-21swapper/307:50:593
2835945992926,2cyclictest0-21swapper/310:45:013
2835945992926,2cyclictest0-21swapper/309:00:123
2835945992925,3cyclictest2900444-21turbostat10:34:553
283594599290,28cyclictest67-21kworker/3:1+events11:50:133
283594599290,27cyclictest0-21swapper/311:40:013
283594599290,21cyclictest0-21swapper/310:55:033
2835941992925,2cyclictest0-21swapper/208:31:592
283594199290,2cyclictest0-21swapper/211:50:122
283594199290,2cyclictest0-21swapper/208:45:132
283594199290,27cyclictest0-21swapper/210:05:132
283594199290,27cyclictest0-21swapper/209:40:132
283594199290,27cyclictest0-21swapper/208:20:112
283594199290,27cyclictest0-21swapper/207:10:142
283594199290,22cyclictest0-21swapper/208:11:592
4577091280,7ptp4l61490irq/134-eno1-TxRx-011:30:003
4577091280,7ptp4l441ktimers/312:30:013
4577091280,7ptp4l441ktimers/311:40:003
4577091280,6ptp4l441ktimers/308:10:023
2835945992826,1cyclictest0-21swapper/308:50:133
2835945992825,2cyclictest0-21swapper/308:16:593
283594599280,27cyclictest0-21swapper/311:45:123
283594599280,27cyclictest0-21swapper/310:05:133
283594599280,27cyclictest0-21swapper/309:40:133
283594599280,27cyclictest0-21swapper/309:35:143
283594599280,27cyclictest0-21swapper/309:20:133
283594599280,27cyclictest0-21swapper/308:20:113
283594599280,27cyclictest0-21swapper/307:10:133
283594599280,21cyclictest0-21swapper/312:10:113
2835941992825,2cyclictest0-21swapper/211:20:132
2835941992825,2cyclictest0-21swapper/209:00:122
2835941992824,2cyclictest0-21swapper/208:57:592
2835941992824,2cyclictest0-21swapper/207:27:592
283594199280,2cyclictest0-21swapper/210:55:022
4577091270,6ptp4l441ktimers/312:25:013
4577091270,6ptp4l441ktimers/310:40:003
4577091270,6ptp4l441ktimers/308:00:013
283594599270,26cyclictest0-21swapper/310:53:003
2835941992724,2cyclictest0-21swapper/212:32:592
2835941992724,2cyclictest0-21swapper/211:40:002
2835941992724,2cyclictest0-21swapper/210:39:552
2835941992724,2cyclictest0-21swapper/208:40:132
283594199270,2cyclictest0-21swapper/211:32:582
283594199270,24cyclictest0-21swapper/210:52:592
4577091260,6ptp4l441ktimers/309:20:013
4577091260,6ptp4l441ktimers/308:35:013
2835945992623,2cyclictest2941026-21turbostat12:35:013
2835941992623,2cyclictest0-21swapper/210:24:552
2835941992623,2cyclictest0-21swapper/207:16:592
283594199260,24cyclictest0-21swapper/212:25:122
283594199260,24cyclictest0-21swapper/209:20:002
4577091250,4ptp4l61490irq/134-eno1-TxRx-007:35:003
4577091250,4ptp4l61490irq/134-eno1-TxRx-007:30:003
2835945992524,1cyclictest0-21swapper/309:47:593
2835945992524,1cyclictest0-21swapper/309:47:593
2835945992523,1cyclictest0-21swapper/311:06:593
2835945992523,1cyclictest0-21swapper/309:52:593
2835945992522,2cyclictest0-21swapper/308:40:133
2835941992523,1cyclictest0-21swapper/207:20:592
2835941992522,2cyclictest0-21swapper/211:09:552
2835941992522,2cyclictest0-21swapper/209:28:592
2835941992521,2cyclictest0-21swapper/207:58:592
4577091240,3ptp4l441ktimers/309:15:013
4577091240,3ptp4l441ktimers/307:24:553
2835941992421,2cyclictest0-21swapper/209:45:592
2835941992421,2cyclictest0-21swapper/209:45:592
4577091230,3ptp4l441ktimers/312:39:563
4577091230,3ptp4l441ktimers/307:19:553
2835941992319,2cyclictest0-21swapper/209:51:592
2835941992118,1cyclictest0-21swapper/209:15:002
231999210,11rtkit-daemon908065-21snmpd07:05:131
2835941991411,2cyclictest0-21swapper/207:33:592
28359419996,2cyclictest351rcuc/212:24:552
28359419930,2cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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