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2026-03-14 - 09:31
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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 Sat Mar 14, 2026 00:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
785481999584,8cyclictest869739-21latency_hist23:30:010
785481999484,7cyclictest824125-21kworker/u8:0+flush-179:021:15:000
785481999183,5cyclictest811651-21kworker/u8:0+events_unbound20:45:240
785481999081,6cyclictest882835-21latency_hist00:10:010
785485998880,5cyclictest821016-21kworker/u8:2+flush-179:021:15:021
785485998781,4cyclictest879516-21kworker/u8:0+events_unbound00:04:001
785485998780,4cyclictest768193-21kworker/u8:0+events_unbound19:20:011
785485998771,13cyclictest879362-40mandb00:00:001
785485998678,6cyclictest821016-21kworker/u8:2+flush-179:021:05:011
785481998566,16cyclictest886024-21latency_hist00:20:010
785485998377,4cyclictest811651-21kworker/u8:0+events_unbound20:35:221
785485998377,4cyclictest793376-21kworker/u8:1+events_unbound19:59:591
785485998270,4cyclictest784111-21kworker/u8:1+events_unbound19:15:011
785485998175,4cyclictest814068-21kworker/u8:1+flush-179:020:45:011
785485997972,4cyclictest811651-21kworker/u8:0+events_unbound20:30:221
785485997870,5cyclictest852266-21kworker/u8:3+events_unbound22:35:161
78548199780,76cyclictest1-21systemd20:15:010
785485997771,4cyclictest844263-21kworker/u8:1+flush-179:022:15:011
785485997769,6cyclictest844263-21kworker/u8:1+flush-179:023:20:011
785485997763,12cyclictest873169-21kworker/u8:3+flush-179:000:10:201
785485997666,7cyclictest877740-21latency_hist23:55:011
785481997565,8cyclictest266-21systemd-journal20:30:000
785485997465,7cyclictest817779-21latency_hist20:50:001
785485997364,7cyclictest791804-21latency_hist19:30:011
785481997364,6cyclictest844263-21kworker/u8:1+flush-179:022:45:240
785485997064,5cyclictest824125-21kworker/u8:0+events_unbound22:20:231
785485997062,6cyclictest811651-21kworker/u8:0+flush-179:020:50:211
785485996963,4cyclictest844263-21kworker/u8:1+flush-179:022:20:001
785485996963,4cyclictest806627-21kworker/u8:1+events_unbound20:15:001
785485996960,6cyclictest876156-21latency_hist23:50:011
785485996863,4cyclictest824125-21kworker/u8:0+flush-179:021:49:551
785485996862,4cyclictest831072-21kworker/u8:3+flush-179:021:50:241
785485996862,4cyclictest806627-21kworker/u8:1+flush-179:020:25:201
785485996760,5cyclictest887601-21kworker/u8:0+flush-179:000:29:561
785485996758,6cyclictest793376-21kworker/u8:1+flush-179:019:50:251
785481996645,5cyclictest845861-21latency_hist22:15:010
785485996559,4cyclictest844263-21kworker/u8:1+flush-179:022:35:001
785481996559,4cyclictest844263-21kworker/u8:1+flush-179:022:25:240
785481996558,4cyclictest814068-21kworker/u8:1+flush-179:020:40:240
785485996458,4cyclictest871312-21kworker/u8:2+flush-179:023:39:561
785485996458,4cyclictest793376-21kworker/u8:1+flush-179:020:05:001
785481996454,7cyclictest790217-21latency_hist19:25:010
785481996452,9cyclictest266-21systemd-journal00:00:010
785485996352,9cyclictest849314-21apt-get22:25:111
785481996358,3cyclictest873169-21kworker/u8:3+flush-179:023:49:550
785481996354,6cyclictest809863-21kworker/u8:3+flush-179:020:35:200
785481996353,8cyclictest834208-21latency_hist21:40:000
785481996340,7cyclictest844276-21latency_hist22:10:010
785485996152,6cyclictest804775-21kworker/u8:0+flush-179:020:15:201
785485996055,4cyclictest820936-21kworker/u8:0+flush-179:021:00:001
785485996054,5cyclictest787774-21kworker/u8:2+flush-179:020:10:011
785485996054,4cyclictest856769-21kworker/u8:0+flush-179:023:04:551
785485996054,4cyclictest824125-21kworker/u8:0+flush-179:021:59:551
785485996052,6cyclictest844263-21kworker/u8:1+flush-179:023:05:201
785485996050,8cyclictest858848-21apt-get22:55:111
785485996050,7cyclictest855422-21latency_hist22:45:011
785485996039,19cyclictest787774-21kworker/u8:2+flush-179:019:20:211
785481996052,6cyclictest800267-21apt-get19:55:130
785485995953,4cyclictest842945-21apt-get22:05:101
785481995949,7cyclictest802159-21diskstats20:00:130
785485995853,4cyclictest856769-21kworker/u8:0+flush-179:023:30:221
785485995852,4cyclictest890833-21kworker/u8:2+flush-179:000:35:211
785481995850,7cyclictest887601-21kworker/u8:0+flush-179:000:25:000
785481995848,8cyclictest844263-21kworker/u8:1+flush-179:023:25:000
785485995752,4cyclictest787774-21kworker/u8:2+flush-179:019:40:201
785485995749,6cyclictest266-21systemd-journal21:33:191
785485995748,6cyclictest814068-21kworker/u8:1+flush-179:021:05:181
785485995649,5cyclictest821016-21kworker/u8:2+events_unbound21:25:141
785481995648,6cyclictest884422-21latency_hist00:15:010
785485995544,7cyclictest790263-21kworker/u8:3+flush-179:019:30:191
785481995545,7cyclictest824125-21kworker/u8:0+events_unbound21:45:020
785485995445,7cyclictest873169-21kworker/u8:3+flush-179:000:15:231
785481995447,5cyclictest856769-21kworker/u8:0+flush-179:023:15:220
785481995446,6cyclictest824125-21kworker/u8:0+flush-179:021:30:010
785481995446,6cyclictest266-21systemd-journal23:09:550
785481995442,10cyclictest266-21systemd-journal19:44:590
785485995346,5cyclictest824125-21kworker/u8:0+events_unbound21:40:131
785485995346,5cyclictest806627-21kworker/u8:1+events_unbound20:25:001
785485995346,4cyclictest831072-21kworker/u8:3+flush-179:021:35:211
785481995345,6cyclictest824125-21kworker/u8:0+events_unbound22:00:020
785485995244,6cyclictest856769-21kworker/u8:0+events_unbound23:15:011
785485995243,6cyclictest873169-21kworker/u8:3+flush-179:023:40:191
785481995247,3cyclictest832629-21dump-pmu-power21:35:000
785481995243,7cyclictest787774-21kworker/u8:2+events_unbound20:10:010
785485995145,4cyclictest884659-21kworker/u8:4+flush-179:000:30:141
785485995139,4cyclictest856769-21kworker/u8:0+events_unbound23:20:221
785485995041,7cyclictest839221-21kworker/u8:1+events_unbound22:00:031
785481995043,5cyclictest817815-21kworker/u8:3+flush-179:020:55:140
785481995041,6cyclictest856769-21kworker/u8:0+events_unbound23:00:180
785485994944,4cyclictest844263-21kworker/u8:1+flush-179:022:45:261
785485994943,4cyclictest873169-21kworker/u8:3+flush-179:000:20:161
785481994943,4cyclictest793376-21kworker/u8:1+flush-179:019:45:200
785481994941,6cyclictest821016-21kworker/u8:2+flush-179:021:10:010
785485994842,4cyclictest794676-21ntp_kernel_pll_19:35:201
785481994841,5cyclictest892414-21latency_hist00:40:000
4577091480,13ptp4l441ktimers/319:09:553
78548799470,38cyclictest820973-21turbostat21:00:003
785485994741,4cyclictest873169-21kworker/u8:3+events_unbound00:05:131
785481994740,5cyclictest800010-21latency_hist19:55:020
785481994738,6cyclictest871312-21kworker/u8:2+events_unbound23:35:140
785481994639,5cyclictest824125-21kworker/u8:0+flush-179:022:15:260
785481994637,7cyclictest856769-21kworker/u8:0+events_unbound23:30:180
785481994541,3cyclictest814068-21kworker/u8:1+events_unbound21:05:000
785481994541,3cyclictest788670-21systemd-run19:20:010
785481994539,5cyclictest787774-21kworker/u8:2+flush-179:019:35:220
78548699430,40cyclictest0-21swapper/219:19:542
785485994336,5cyclictest856769-21kworker/u8:0+flush-179:022:50:151
785481994336,5cyclictest793376-21kworker/u8:1+flush-179:019:35:010
78548599420,40cyclictest825801-21munin-run21:15:001
785481994235,5cyclictest824125-21kworker/u8:0+events_unbound21:40:200
785481994235,5cyclictest824125-21kworker/u8:0+events_unbound21:15:230
785481994233,6cyclictest844263-21kworker/u8:1+events_unbound22:30:130
785481994131,7cyclictest785389-21latency_hist19:10:020
78548199411,2cyclictest714-21Xorg22:53:000
785481994031,7cyclictest839221-21kworker/u8:1+events_unbound22:00:190
785487993937,1cyclictest0-21swapper/322:49:553
78548799390,37cyclictest871338-21turbostat23:35:003
785485993934,4cyclictest844263-21kworker/u8:1+events_unbound23:25:201
785485993932,5cyclictest824125-21kworker/u8:0+flush-179:021:20:251
785481993936,2cyclictest0-21swapper/020:18:590
4577091390,5ptp4l431rcuc/323:30:003
78548699380,36cyclictest0-21swapper/200:20:592
78548699380,35cyclictest0-21swapper/222:28:592
785481993834,2cyclictest714-21Xorg22:41:590
785481993831,5cyclictest873168-21kworker/u8:1+flush-179:023:55:000
785487993734,2cyclictest0-21swapper/320:46:593
785487993730,7cyclictest0-21swapper/319:32:593
78548799370,36cyclictest0-21swapper/322:18:003
78548799370,36cyclictest0-21swapper/300:24:553
785486993734,2cyclictest0-21swapper/223:08:592
78548699370,35cyclictest0-21swapper/221:58:592
78548699370,35cyclictest0-21swapper/220:25:592
785481993732,3cyclictest0-21swapper/000:03:590
785487993630,5cyclictest858600-21turbostat22:55:003
785487993629,6cyclictest853849-21turbostat22:40:003
78548799360,35cyclictest0-21swapper/322:34:593
78548799360,35cyclictest0-21swapper/320:21:593
78548799360,35cyclictest0-21swapper/319:27:593
78548799360,35cyclictest0-21swapper/300:08:593
78548799360,1cyclictest0-21swapper/322:00:593
78548799360,1cyclictest0-21swapper/319:13:593
785486993633,2cyclictest0-21swapper/222:04:592
785486993633,2cyclictest0-21swapper/221:09:552
785481993632,2cyclictest714-21Xorg19:25:590
78548799350,2cyclictest0-21swapper/321:25:013
78548799350,1cyclictest0-21swapper/321:59:593
785486993533,1cyclictest0-21swapper/221:35:002
785486993532,2cyclictest0-21swapper/222:44:552
785481993533,1cyclictest809863-21kworker/u8:3+events_unbound20:35:010
785481993531,2cyclictest714-21Xorg22:35:590
785486993431,2cyclictest0-21swapper/220:34:542
785486993431,2cyclictest0-21swapper/219:53:592
785486993431,2cyclictest0-21swapper/200:01:592
785485993428,4cyclictest793376-21kworker/u8:1+flush-179:019:45:191
78548799330,26cyclictest0-21swapper/322:40:123
78548799330,26cyclictest0-21swapper/321:25:023
78548799330,1cyclictest0-21swapper/300:28:593
785486993330,2cyclictest0-21swapper/223:46:592
785486993330,2cyclictest0-21swapper/223:01:592
785486993330,2cyclictest0-21swapper/221:36:592
785486993330,2cyclictest0-21swapper/219:44:552
785486993330,2cyclictest0-21swapper/200:36:592
785481993326,5cyclictest809838-21ls20:24:590
785481993326,4cyclictest0-21swapper/023:40:590
785487993229,2cyclictest0-21swapper/319:22:593
78548799320,31cyclictest0-21swapper/321:50:593
78548799320,26cyclictest0-21swapper/323:55:123
785486993229,2cyclictest0-21swapper/223:34:592
785486993229,2cyclictest0-21swapper/222:30:592
785486993229,2cyclictest0-21swapper/220:21:002
78548699320,2cyclictest0-21swapper/200:19:552
78548699320,29cyclictest0-21swapper/221:29:592
785481993227,3cyclictest844263-21kworker/u8:1+flush-179:023:10:200
785481993227,3cyclictest0-21swapper/021:55:000
785487993125,5cyclictest0-21swapper/323:45:113
785486993128,2cyclictest0-21swapper/200:30:122
78548699310,2cyclictest0-21swapper/220:06:592
231999310,5rtkit-daemon495-21gpm21:23:170
785487993027,2cyclictest0-21swapper/321:35:123
785487993025,4cyclictest0-21swapper/320:10:023
785487993025,4cyclictest0-21swapper/319:35:133
785487993024,5cyclictest798433-21turbostat19:50:003
78548799300,2cyclictest0-21swapper/321:10:123
785486993028,1cyclictest0-21swapper/221:45:002
785486993027,2cyclictest0-21swapper/223:16:592
785486993027,2cyclictest0-21swapper/221:45:032
785486993027,2cyclictest0-21swapper/221:00:122
785486993027,2cyclictest0-21swapper/220:11:592
785481993027,2cyclictest0-21swapper/022:20:120
785481993023,5cyclictest884659-21kworker/u8:4+events_unbound00:30:130
785481993023,5cyclictest266-21systemd-journal00:28:210
4577091300,7ptp4l441ktimers/319:50:023
785487992927,1cyclictest0-21swapper/322:13:593
785487992926,2cyclictest0-21swapper/323:20:113
785487992926,2cyclictest0-21swapper/321:45:133
785487992926,2cyclictest0-21swapper/321:00:123
785487992926,2cyclictest0-21swapper/320:05:123
785487992926,2cyclictest0-21swapper/300:30:123
785487992924,4cyclictest832624-21turbostat21:35:003
78548799290,27cyclictest0-21swapper/320:40:123
785486992926,2cyclictest0-21swapper/221:15:012
785486992926,2cyclictest0-21swapper/219:30:112
78548699290,27cyclictest0-21swapper/222:05:112
78548699290,27cyclictest0-21swapper/221:25:012
78548699290,27cyclictest0-21swapper/221:15:012
78548699290,27cyclictest0-21swapper/219:35:132
78548699290,27cyclictest0-21swapper/200:10:132
785481992924,4cyclictest859691-21phc2sys-jitter22:55:220
785481992918,9cyclictest811651-21kworker/u8:0+flush-179:020:50:250
4577091290,7ptp4l441ktimers/320:40:003
4577091290,6ptp4l441ktimers/323:15:013
78548799280,2cyclictest0-21swapper/300:15:103
78548799280,27cyclictest0-21swapper/322:58:593
78548799280,26cyclictest0-21swapper/319:40:133
785486992825,2cyclictest0-21swapper/223:35:122
785486992825,2cyclictest0-21swapper/223:12:592
785486992825,2cyclictest0-21swapper/222:45:592
785486992825,2cyclictest0-21swapper/222:20:132
78548699280,2cyclictest0-21swapper/223:56:592
78548699280,26cyclictest0-21swapper/219:20:592
78548699280,20cyclictest0-21swapper/223:28:592
785481992824,2cyclictest714-21Xorg19:11:590
4577091280,7ptp4l441ktimers/300:15:013
4577091280,6ptp4l441ktimers/322:30:003
4577091280,5ptp4l441ktimers/323:05:013
4577091280,4ptp4l441ktimers/319:20:003
785487992725,1cyclictest0-21swapper/322:24:583
78548799270,1cyclictest0-21swapper/323:52:593
78548799270,1cyclictest0-21swapper/321:15:013
785486992724,2cyclictest0-21swapper/222:18:592
785486992724,2cyclictest0-21swapper/221:54:592
785486992724,2cyclictest0-21swapper/220:43:582
785486992724,2cyclictest0-21swapper/219:58:592
785486992723,2cyclictest0-21swapper/200:06:002
78548699270,25cyclictest0-21swapper/222:55:592
78548699270,24cyclictest0-21swapper/219:29:002
78548699270,1cyclictest0-21swapper/222:52:592
4577091270,6ptp4l61490irq/134-eno1-TxRx-023:20:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-021:45:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-020:20:023
4577091270,6ptp4l61490irq/134-eno1-TxRx-020:04:553
4577091270,5ptp4l441ktimers/322:09:553
4577091270,5ptp4l441ktimers/320:55:013
785487992624,1cyclictest0-21swapper/320:27:593
785487992621,4cyclictest872946-21turbostat23:40:013
785486992623,2cyclictest0-21swapper/219:12:002
78548699260,24cyclictest0-21swapper/220:15:592
4577091260,5ptp4l61490irq/134-eno1-TxRx-020:34:563
785487992523,1cyclictest0-21swapper/319:59:563
785486992522,2cyclictest0-21swapper/223:51:582
785486992522,2cyclictest0-21swapper/220:48:592
785486992520,2cyclictest0-21swapper/223:24:592
4577091250,6ptp4l61490irq/134-eno1-TxRx-000:05:003
4577091250,6ptp4l441ktimers/300:39:563
4577091250,4ptp4l441ktimers/321:09:563
231999250,13rtkit-daemon785358-21users19:05:311
785487992422,1cyclictest0-21swapper/323:43:593
78548799240,23cyclictest0-21swapper/323:04:593
785486992320,2cyclictest0-21swapper/220:56:002
785486992320,2cyclictest0-21swapper/220:39:562
785486992320,2cyclictest0-21swapper/220:00:592
785486992119,1cyclictest0-21swapper/223:42:592
785486992017,2cyclictest0-21swapper/222:35:592
785486992017,2cyclictest0-21swapper/220:54:002
785486991411,2cyclictest0-21swapper/200:27:582
78548699118,2cyclictest0-21swapper/222:12:592
7854869952,2cyclictest0-21swapper/219:46:402
7854869930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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