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2026-08-16 - 18:50
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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 Sun Aug 16, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
304430799155145,7cyclictest3117158-21latency_hist10:55:001
304430799152141,8cyclictest3060425-21latency_hist08:00:021
304430799148137,8cyclictest3066788-21latency_hist08:20:021
304430399146135,7cyclictest3128803-21kworker/u8:3+flush-179:011:35:010
304430799143133,7cyclictest3125141-21latency_hist11:20:011
304430799142131,7cyclictest3055656-21latency_hist07:45:011
304430399140129,8cyclictest3143141-21latency_hist12:15:020
304430399134124,7cyclictest3073163-21apt-get08:40:010
304430399123112,8cyclictest3118758-21latency_hist11:00:000
304430799122113,6cyclictest3108948-21latency_hist10:30:011
304430799121112,6cyclictest3104426-21kworker/u8:2+flush-179:010:20:001
304430399119109,7cyclictest3063864-21kworker/u8:1+flush-179:008:45:170
304430799118110,5cyclictest3121938-21latency_hist11:10:011
304430799118106,8cyclictest3143377-21kworker/u8:2+flush-179:012:20:221
304430399118105,10cyclictest3045811-21latency_hist07:15:020
304430399118105,10cyclictest3045811-21latency_hist07:15:010
304430399115108,4cyclictest3055704-21kworker/u8:3+flush-179:007:55:250
304430399114104,6cyclictest3131973-21kworker/u8:2+flush-179:011:50:230
304430399113103,7cyclictest3063864-21kworker/u8:1+flush-179:008:20:200
304430399111101,6cyclictest3085730-21kworker/u8:0+events_unbound09:55:010
30443039910998,6cyclictest3040908-21kworker/u8:1+flush-179:007:45:260
304430399109101,6cyclictest3138334-21kworker/u8:0+flush-179:012:25:210
304430399109101,5cyclictest3093012-21kworker/u8:1+flush-179:009:40:220
30443079910884,21cyclictest510-21rs:main1
304430399108100,6cyclictest3085730-21kworker/u8:0+flush-179:009:20:220
30443039910699,4cyclictest3052420-21kworker/u8:2+events_unbound07:35:240
30443039910696,7cyclictest1213033-21systemd-journal09:35:010
30443039910694,9cyclictest3068421-21kworker/u8:0+flush-179:008:25:220
3044303991060,101cyclictest1-21systemd11:50:000
30443079910496,5cyclictest3148178-21apt-get12:30:111
30443039910491,11cyclictest3078443-21latency_hist08:55:010
30443079910393,8cyclictest3056197-21diskstats07:45:161
30443079910392,7cyclictest3080852-21diskstats09:00:161
30443039910294,5cyclictest3104426-21kworker/u8:2+flush-179:010:35:180
30443039910294,5cyclictest3085730-21kworker/u8:0+events_unbound10:09:590
30443039910090,7cyclictest3100998-21latency_hist10:05:010
30443039910090,7cyclictest3100998-21latency_hist10:05:010
3044303999987,8cyclictest3063606-21latency_hist08:10:000
3044303999790,4cyclictest3131973-21kworker/u8:2+flush-179:011:40:200
3044303999587,5cyclictest3049243-21kworker/u8:0+flush-179:007:25:000
3044307999384,7cyclictest3055704-21kworker/u8:3+flush-179:008:05:211
3044303999284,4cyclictest3042898-21kworker/u8:2+flush-179:007:15:180
3044303999283,6cyclictest3049243-21kworker/u8:0+flush-179:007:25:240
3044307999184,4cyclictest3063864-21kworker/u8:1+flush-179:008:40:171
3044303999184,5cyclictest3133841-21kworker/u8:1+flush-179:011:55:180
3044303999182,6cyclictest3085730-21kworker/u8:0+flush-179:009:55:220
3044303999083,5cyclictest3120355-21latency_hist11:05:010
3044303998981,5cyclictest3125093-21kworker/u8:1+flush-179:011:25:170
3044303998980,7cyclictest3138640-21apt-get12:00:130
3044303998880,5cyclictest3085730-21kworker/u8:0+events_unbound09:30:010
3044307998779,6cyclictest3132275-21apt-get11:40:091
3044303998776,8cyclictest3081892-21kworker/u8:2+flush-179:009:10:220
3044303998678,5cyclictest3063864-21kworker/u8:1+flush-179:008:30:220
3044307998577,5cyclictest3113763-21kworker/u8:2+flush-179:010:45:271
3044307998575,7cyclictest1213033-21systemd-journal09:50:001
3044303998578,5cyclictest3076649-21kworker/u8:0+flush-179:009:05:000
3044303998478,4cyclictest3138334-21kworker/u8:0+events_unbound12:25:000
3044303998478,4cyclictest3100862-21kworker/u8:1+flush-179:010:20:180
3044303998478,4cyclictest3055704-21kworker/u8:3+flush-179:008:00:170
3044303998375,6cyclictest3148159-21kworker/u8:1+flush-179:012:30:210
3044303998375,5cyclictest3144744-21latency_hist12:20:010
3044307998276,5cyclictest3143377-21kworker/u8:2+events_unbound12:30:001
3044307998273,7cyclictest3128336-21awk11:30:001
3044307998270,9cyclictest3093038-21latency_hist09:40:011
3044307998270,9cyclictest3093038-21latency_hist09:40:011
3044303998276,4cyclictest3113763-21kworker/u8:2+flush-179:010:45:190
3044303998275,5cyclictest3049243-21kworker/u8:0+flush-179:007:40:210
3044303998275,4cyclictest3131973-21kworker/u8:2+flush-179:011:39:560
3044303998275,4cyclictest3040908-21kworker/u8:1+events_unbound07:30:240
3044303998268,10cyclictest1213033-21systemd-journal08:55:020
3044307998172,6cyclictest3100862-21kworker/u8:1+flush-179:010:05:261
3044303998171,7cyclictest3140208-21/usr/sbin/munin12:05:180
3044303998071,6cyclictest3055641-21kworker/u8:2+flush-179:007:50:160
3044307997973,4cyclictest3130667-21apt-get11:35:111
3044307997968,9cyclictest3122193-21apt-get11:10:111
3044307997968,8cyclictest3138334-21kworker/u8:0+flush-179:012:15:231
3044303997973,4cyclictest3112114-21kworker/u8:1+flush-179:010:40:220
3044307997870,5cyclictest3052439-21latency_hist07:35:011
3044307997869,7cyclictest3125370-21/usr/sbin/munin11:20:171
3044307997769,6cyclictest3086934-21apt-get09:20:121
3044307997669,5cyclictest3063864-21kworker/u8:1+flush-179:008:45:241
3044307997666,7cyclictest3128286-21kworker/u8:0+flush-179:011:30:021
3044303997668,6cyclictest3055704-21kworker/u8:3+flush-179:008:15:230
3044303997665,6cyclictest3138334-21kworker/u8:0+events_unbound12:35:230
3044303997663,10cyclictest1213033-21systemd-journal09:40:010
3044303997663,10cyclictest1213033-21systemd-journal09:40:010
3044307997565,6cyclictest3040908-21kworker/u8:1+flush-179:007:15:011
3044303997567,6cyclictest3094886-21apt-get09:45:130
3044307997462,9cyclictest3093012-21kworker/u8:1+flush-179:009:40:211
3044307997364,6cyclictest3071541-21kworker/u8:2+flush-179:008:35:141
3044307997262,6cyclictest3104167-21latency_hist10:15:011
3044303997265,5cyclictest3104426-21kworker/u8:2+events_unbound10:15:270
3044303997265,5cyclictest3085730-21kworker/u8:0+events_unbound10:10:160
3044303997262,8cyclictest3081933-21kworker/u8:3+flush-179:009:10:000
3044307997063,5cyclictest3085730-21kworker/u8:0+flush-179:009:55:261
3044307997061,7cyclictest3133841-21kworker/u8:1+flush-179:011:50:011
3044303996964,4cyclictest3055704-21kworker/u8:3+flush-179:008:10:220
3044303996961,5cyclictest3107598-21kworker/u8:0+events_unbound10:30:140
3044307996762,4cyclictest3063864-21kworker/u8:1+flush-179:008:20:251
3044307996756,8cyclictest1213033-21systemd-journal09:26:361
3044303996757,4cyclictest3119003-21kworker/u8:0+events_unbound11:05:240
3044307996655,8cyclictest3044196-21latency_hist07:10:011
3044307996646,17cyclictest1213033-21systemd-journal11:02:371
3044307996559,5cyclictest3085730-21kworker/u8:0+flush-179:009:30:251
3044303996552,10cyclictest3081933-21kworker/u8:3+flush-179:009:15:220
3044307996453,9cyclictest3099646-21/usr/sbin/munin10:00:181
3044307996453,9cyclictest3099646-21/usr/sbin/munin10:00:171
3044303996459,4cyclictest3063864-21kworker/u8:1+flush-179:008:40:230
3044303996357,4cyclictest3104426-21kworker/u8:2+flush-179:010:25:220
3044303996348,10cyclictest3112114-21kworker/u8:1+flush-179:010:50:160
3044307996258,2cyclictest3055704-21kworker/u8:3+events_unbound08:00:141
3044307996256,4cyclictest3133841-21kworker/u8:1+flush-179:012:10:211
3044303996154,5cyclictest3112114-21kworker/u8:1+flush-179:011:10:020
3044307996051,7cyclictest3040908-21kworker/u8:1+flush-179:007:30:011
3044303996053,5cyclictest3113763-21kworker/u8:2+flush-179:011:15:230
3044307995955,3cyclictest3081933-21kworker/u8:3+flush-179:009:18:571
3044307995848,7cyclictest3052694-21apt-get07:35:111
3044307995749,5cyclictest3110536-21latency_hist10:35:011
3044307995446,6cyclictest3065192-21latency_hist08:15:011
3044307995312,39cyclictest3085071-21munin-run09:15:001
3044313995149,1cyclictest0-21swapper/308:37:003
3044307995144,5cyclictest3117413-21apt-get10:55:121
3044307995046,2cyclictest714-21Xorg07:21:591
3044307995045,3cyclictest3071541-21kworker/u8:2+flush-179:008:50:061
4577091490,12ptp4l61490irq/134-eno1-TxRx-007:09:553
3044307994737,8cyclictest0-21swapper/108:55:141
3044307994737,7cyclictest0-21swapper/112:00:151
3044307994640,4cyclictest3133841-21kworker/u8:1+flush-179:011:55:251
3044307994638,6cyclictest3085730-21kworker/u8:0+flush-179:009:50:161
3044307994635,9cyclictest3081892-21kworker/u8:2+flush-179:009:05:161
3044307994542,2cyclictest3138334-21kworker/u8:0+flush-179:012:35:211
3044307994539,4cyclictest3112125-21latency_hist10:40:011
3044307994537,5cyclictest3133841-21kworker/u8:1+events_unbound12:05:151
304430799444,36cyclictest0-21swapper/111:50:151
3044310994340,2cyclictest0-21swapper/209:22:592
304431099420,39cyclictest0-21swapper/209:34:592
3044313994035,4cyclictest3151130-21turbostat12:40:003
304431399400,5cyclictest3055660-21turbostat07:44:593
304431399400,39cyclictest3149525-21turbostat12:35:003
3044307994014,11cyclictest714-21Xorg07:52:591
3044303994035,4cyclictest3125093-21kworker/u8:1+flush-179:011:20:190
304431399390,5cyclictest3050861-21turbostat07:30:003
304431399390,4cyclictest3086669-21turbostat09:20:003
304431399390,38cyclictest3081908-21turbostat09:05:003
3044307993935,2cyclictest714-21Xorg07:11:591
3044307993935,2cyclictest714-21Xorg07:11:591
304430799390,3cyclictest714-21Xorg10:20:591
3044313993832,5cyclictest3138396-21turbostat12:00:013
304431399380,4cyclictest3112143-21turbostat10:40:003
304431099380,35cyclictest0-21swapper/210:47:592
304431099380,35cyclictest0-21swapper/210:45:002
304431099380,35cyclictest0-21swapper/209:09:552
304431099380,35cyclictest0-21swapper/207:10:592
304431099380,35cyclictest0-21swapper/207:10:582
4577091370,6ptp4l441ktimers/309:15:013
3044313993735,1cyclictest0-21swapper/310:31:003
3044310993734,2cyclictest0-21swapper/211:16:592
3044310993734,2cyclictest0-21swapper/210:52:592
3044310993734,2cyclictest0-21swapper/208:21:592
3044310993734,2cyclictest0-21swapper/207:42:582
3044310993734,2cyclictest0-21swapper/207:33:592
304431099370,35cyclictest0-21swapper/210:30:002
304431099370,1cyclictest0-21swapper/210:03:592
304431099370,1cyclictest0-21swapper/210:03:582
3044313993634,1cyclictest0-21swapper/309:39:553
3044313993634,1cyclictest0-21swapper/309:39:553
3044313993634,1cyclictest0-21swapper/308:44:553
3044313993633,2cyclictest0-21swapper/311:47:593
3044313993633,2cyclictest0-21swapper/311:44:003
3044313993633,2cyclictest0-21swapper/308:09:563
3044313993631,4cyclictest3045816-21turbostat07:15:013
3044313993631,4cyclictest3045816-21turbostat07:15:003
3044310993633,2cyclictest0-21swapper/207:55:592
3044307993613,8cyclictest714-21Xorg08:28:581
304431399350,1cyclictest0-21swapper/309:42:593
3044310993532,2cyclictest0-21swapper/212:18:002
3044310993532,2cyclictest0-21swapper/211:26:592
3044310993532,2cyclictest0-21swapper/210:05:592
3044310993532,2cyclictest0-21swapper/209:17:002
3044313993432,1cyclictest0-21swapper/310:58:583
3044313993432,1cyclictest0-21swapper/309:25:593
3044313993432,1cyclictest0-21swapper/308:58:593
304431399340,4cyclictest3083497-21turbostat09:10:003
3044310993431,2cyclictest0-21swapper/211:00:592
3044313993331,1cyclictest0-21swapper/312:27:593
3044313993331,1cyclictest0-21swapper/311:01:003
3044313993331,1cyclictest0-21swapper/310:02:593
3044313993331,1cyclictest0-21swapper/310:02:593
3044313993326,5cyclictest3069990-21turbostat08:30:003
3044310993331,1cyclictest0-21swapper/210:15:002
3044310993330,2cyclictest0-21swapper/210:17:592
3044307993324,7cyclictest0-21swapper/108:35:011
3044313993227,4cyclictest3068393-21turbostat08:25:013
3044313993225,5cyclictest3143157-21turbostat12:15:013
3044310993229,2cyclictest0-21swapper/211:55:592
3044310993229,2cyclictest0-21swapper/208:50:592
3044310993229,2cyclictest0-21swapper/207:47:592
4577091310,7ptp4l441ktimers/308:35:003
3044313993129,1cyclictest0-21swapper/310:49:563
304431399310,30cyclictest0-21swapper/309:54:593
3044310993128,2cyclictest0-21swapper/211:33:002
4577091300,6ptp4l441ktimers/308:50:013
3044313993025,2cyclictest0-21swapper/310:05:153
304431399300,28cyclictest0-21swapper/310:50:033
304431399300,28cyclictest0-21swapper/307:15:033
3044310993027,2cyclictest0-21swapper/212:35:122
3044310993027,2cyclictest0-21swapper/207:23:002
304431099300,28cyclictest0-21swapper/209:10:132
4577091290,7ptp4l441ktimers/311:09:563
4577091290,6ptp4l441ktimers/311:35:003
4577091290,6ptp4l441ktimers/310:15:003
4577091290,6ptp4l441ktimers/307:25:003
3044313992927,1cyclictest0-21swapper/307:45:593
3044313992926,2cyclictest0-21swapper/310:15:163
3044313992926,2cyclictest0-21swapper/310:00:003
3044313992926,2cyclictest0-21swapper/309:45:153
3044313992925,2cyclictest0-21swapper/311:35:043
3044310992927,1cyclictest0-21swapper/210:24:552
3044310992926,2cyclictest0-21swapper/212:10:142
3044310992926,2cyclictest0-21swapper/211:46:002
3044310992926,2cyclictest0-21swapper/211:35:122
3044310992926,2cyclictest0-21swapper/210:30:122
3044310992926,2cyclictest0-21swapper/208:40:012
3044310992926,2cyclictest0-21swapper/207:50:132
304431099290,27cyclictest0-21swapper/212:30:132
304431099290,27cyclictest0-21swapper/211:10:132
304431099290,27cyclictest0-21swapper/210:35:152
304431099290,27cyclictest0-21swapper/208:10:152
304431099290,1cyclictest0-21swapper/209:35:122
304431099290,1cyclictest0-21swapper/209:35:122
3044303992925,3cyclictest0-21swapper/007:10:020
4577091280,6ptp4l441ktimers/309:24:553
4577091280,6ptp4l441ktimers/308:54:563
3044313992826,1cyclictest0-21swapper/312:15:593
3044313992825,2cyclictest0-21swapper/310:25:133
3044313992825,2cyclictest0-21swapper/307:35:133
304431399280,27cyclictest0-21swapper/310:40:143
304431399280,27cyclictest0-21swapper/307:55:143
304431399280,21cyclictest0-21swapper/308:15:153
304431399280,1cyclictest0-21swapper/307:34:003
3044310992825,2cyclictest0-21swapper/212:25:582
3044310992825,2cyclictest0-21swapper/212:05:132
3044310992825,2cyclictest0-21swapper/211:07:592
3044310992825,2cyclictest0-21swapper/208:01:592
304431099280,26cyclictest0-21swapper/212:20:122
304431099280,26cyclictest0-21swapper/209:25:132
304431099280,26cyclictest0-21swapper/208:40:012
304431099280,26cyclictest0-21swapper/208:25:142
4577091270,6ptp4l441ktimers/308:14:553
4577091270,5ptp4l441ktimers/312:24:553
3044313992725,1cyclictest0-21swapper/312:01:593
3044313992724,2cyclictest0-21swapper/311:26:593
3044313992724,2cyclictest0-21swapper/308:00:123
304431399270,26cyclictest0-21swapper/311:18:003
3044310992724,2cyclictest0-21swapper/210:57:592
3044310992724,2cyclictest0-21swapper/209:40:592
3044310992724,2cyclictest0-21swapper/208:06:592
304431099270,25cyclictest0-21swapper/207:27:582
4577091260,5ptp4l61490irq/134-eno1-TxRx-007:55:003
4577091260,5ptp4l441ktimers/311:54:563
3044313992624,1cyclictest0-21swapper/312:08:593
3044310992623,2cyclictest0-21swapper/208:58:592
304431099260,2cyclictest0-21swapper/208:30:592
4577091250,4ptp4l441ktimers/311:24:563
3044310992523,1cyclictest0-21swapper/211:25:002
3044310992522,2cyclictest0-21swapper/209:52:592
3044310992422,1cyclictest0-21swapper/211:55:002
3044310992422,1cyclictest0-21swapper/211:40:592
3044310992421,2cyclictest0-21swapper/207:37:002
3044310992420,2cyclictest0-21swapper/209:45:152
3044310992320,2cyclictest0-21swapper/209:00:592
3044310992320,2cyclictest0-21swapper/208:49:552
3044313992215,5cyclictest3091454-21turbostat09:35:003
3044310992219,2cyclictest0-21swapper/207:17:002
3044313992118,2cyclictest0-21swapper/311:10:113
3044310991916,2cyclictest0-21swapper/209:55:592
4577091150,3ptp4l441ktimers/310:20:273
304431099129,2cyclictest0-21swapper/212:02:002
304431099129,2cyclictest0-21swapper/208:18:592
30443109930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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