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2026-09-09 - 12:48
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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 Wed Sep 09, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
392307799151135,12cyclictest1213033-21systemd-journal19:35:001
392307599150138,9cyclictest3958033-21apt-get21:00:000
392307599143129,10cyclictest3966232-21latency_hist21:25:010
392307599136128,5cyclictest3986087-21kworker/u8:1+events_unbound22:35:000
392307799133120,9cyclictest3948435-21kworker/u8:1+events_unbound20:30:011
392307599133123,7cyclictest3983923-21kworker/u8:0+flush-179:022:15:260
392307799130120,7cyclictest3948435-21kworker/u8:1+flush-179:020:30:241
392307599128120,5cyclictest3965182-21kworker/u8:0+events_unbound21:45:000
392307599127121,5cyclictest3945331-21kworker/u8:3+flush-179:020:44:590
392307799126117,6cyclictest3995906-21latency_hist22:55:011
392307799126117,6cyclictest3995906-21latency_hist22:55:011
392307799125114,7cyclictest3935764-21kworker/u8:2+flush-179:020:00:171
392307599125118,5cyclictest3986087-21kworker/u8:1+events_unbound22:40:010
392307599125117,5cyclictest4008618-21kworker/u8:0+flush-179:023:55:010
392307599125115,7cyclictest3951639-21latency_hist20:40:010
392307799124112,9cyclictest3971258-21latency_hist21:40:011
392307599122115,5cyclictest3995887-21kworker/u8:0+flush-179:023:15:000
392307599121111,7cyclictest3976171-21kworker/u8:3+flush-179:022:00:250
392307599121111,7cyclictest3976171-21kworker/u8:3+flush-179:022:00:250
392307599121109,10cyclictest1213033-21systemd-journal22:00:000
392307599120111,7cyclictest3935764-21kworker/u8:2+flush-179:020:00:250
392307799119112,5cyclictest4016824-21kworker/u8:2+events_unbound00:00:001
392307599118110,5cyclictest4021676-21kworker/u8:1+flush-179:000:20:150
392307799117107,7cyclictest3965182-21kworker/u8:0+flush-179:021:50:241
392307599117111,5cyclictest4008618-21kworker/u8:0+flush-179:023:45:000
392307599117110,5cyclictest3945331-21kworker/u8:3+events_unbound20:50:240
392307799115105,7cyclictest3987696-21latency_hist22:30:021
392307599114103,9cyclictest510-21rs:main0
392307799113106,5cyclictest4014077-21kworker/u8:1+flush-179:000:04:011
392307799113105,5cyclictest3983923-21kworker/u8:0+events_unbound22:20:001
392307799112103,6cyclictest3260786-21kworker/u8:4+flush-179:019:50:231
392307799112102,7cyclictest3929600-21kworker/u8:1+flush-179:019:35:221
392307599112103,6cyclictest3992989-21apt-get22:45:100
392307799111100,8cyclictest4028062-21latency_hist00:35:001
39230759911199,9cyclictest1213033-21systemd-journal21:15:010
392307599111101,7cyclictest3926227-21kworker/u8:0+events_unbound19:25:140
392307599111101,7cyclictest3926227-21kworker/u8:0+events_unbound19:25:140
39230779911096,10cyclictest3940762-21apt-get20:05:121
392307599110103,5cyclictest3929600-21kworker/u8:1+flush-179:019:30:260
392307599110102,6cyclictest3986087-21kworker/u8:1+flush-179:022:40:250
392307599110102,5cyclictest3991023-21kworker/u8:3+flush-179:022:50:280
392307599110102,5cyclictest3991023-21kworker/u8:3+flush-179:022:50:270
392307599110101,6cyclictest4008618-21kworker/u8:0+events_unbound23:55:180
39230779910997,9cyclictest3945271-21latency_hist20:20:011
392307599109105,2cyclictest4021720-21kworker/u8:2+flush-179:000:30:180
392307599109104,3cyclictest3965182-21kworker/u8:0+flush-179:021:45:240
392307599108100,6cyclictest3976171-21kworker/u8:3+flush-179:022:05:200
39230759910799,5cyclictest4000664-21kworker/u8:1+flush-179:023:15:210
39230779910695,8cyclictest4000664-21kworker/u8:1+flush-179:023:20:001
392307799106100,4cyclictest4029664-21latency_hist00:40:021
39230759910699,5cyclictest3961688-21kworker/u8:1+flush-179:021:25:140
39230759910695,8cyclictest4007053-21latency_hist23:30:000
39230779910598,5cyclictest3983923-21kworker/u8:0+flush-179:022:35:151
39230779910597,5cyclictest3948435-21kworker/u8:1+flush-179:020:40:231
39230759910597,5cyclictest4018508-21kworker/u8:3+flush-179:000:05:220
3923075991050,102cyclictest1-21systemd20:00:000
39230779910492,9cyclictest3923026-21kworker/u8:2+flush-179:019:10:231
39230759910393,7cyclictest3935764-21kworker/u8:2+flush-179:020:25:230
39230759910294,6cyclictest3260786-21kworker/u8:4+events_unbound19:15:010
39230759910292,7cyclictest3932611-21kworker/u8:0+flush-179:019:45:180
39230779910195,4cyclictest3948435-21kworker/u8:1+flush-179:020:35:151
39230779910190,8cyclictest3992971-21/usr/sbin/munin22:45:221
39230779910189,9cyclictest3961688-21kworker/u8:1+flush-179:021:25:171
39230779910093,4cyclictest4021676-21kworker/u8:1+flush-179:000:15:251
39230779910092,6cyclictest4000664-21kworker/u8:1+flush-179:023:35:181
3923077999985,10cyclictest3953780-21diskstats20:45:171
3923075999894,3cyclictest4021676-21kworker/u8:1+events_unbound00:15:240
3923075999890,7cyclictest4000664-21kworker/u8:1+flush-179:023:35:000
3923077999788,6cyclictest3956409-21latency_hist20:55:001
3923075999788,6cyclictest3983923-21kworker/u8:0+events_unbound22:20:150
3923077999686,8cyclictest4020102-21latency_hist00:10:001
3923077999588,5cyclictest3976171-21kworker/u8:3+flush-179:021:55:241
3923075999588,5cyclictest3995887-21kworker/u8:0+events_unbound22:59:590
3923075999587,5cyclictest3935764-21kworker/u8:2+events_unbound20:15:160
3923075999586,7cyclictest3945331-21kworker/u8:3+events_unbound21:00:030
3923077999282,7cyclictest3926227-21kworker/u8:0+flush-179:019:25:151
3923077999282,7cyclictest3926227-21kworker/u8:0+flush-179:019:25:151
3923075999284,5cyclictest3965182-21kworker/u8:0+events_unbound21:35:160
3923075999283,6cyclictest3932611-21kworker/u8:0+events_unbound20:20:200
3923075999184,5cyclictest4000664-21kworker/u8:1+flush-179:023:20:150
3923077999086,3cyclictest3967800-21kworker/u8:2+events_unbound22:15:011
3923077999085,3cyclictest3976171-21kworker/u8:3+flush-179:022:05:221
3923075999082,6cyclictest1213033-21systemd-journal00:00:170
3923077998983,4cyclictest3945331-21kworker/u8:3+flush-179:021:00:181
3923077998980,6cyclictest3965182-21kworker/u8:0+flush-179:021:20:261
3923075998982,5cyclictest3967800-21kworker/u8:2+flush-179:022:15:000
3923075998982,5cyclictest3959900-21kworker/u8:2+flush-179:021:05:160
3923075998980,6cyclictest3932611-21kworker/u8:0+flush-179:020:10:160
3923077998873,11cyclictest1213033-21systemd-journal22:40:181
3923077998782,4cyclictest4014077-21kworker/u8:1+flush-179:023:50:231
3923075998781,4cyclictest3948435-21kworker/u8:1+flush-179:020:30:280
3923075998778,6cyclictest3967800-21kworker/u8:2+flush-179:021:50:210
3923075998777,7cyclictest3959900-21kworker/u8:2+flush-179:021:15:220
3923075998777,7cyclictest3959900-21kworker/u8:2+flush-179:021:15:220
3923077998681,4cyclictest3965182-21kworker/u8:0+flush-179:021:30:201
3923077998679,5cyclictest3260786-21kworker/u8:4+flush-179:019:15:181
3923075998681,3cyclictest3260786-21kworker/u8:4+flush-179:019:40:220
3923075998580,4cyclictest4021676-21kworker/u8:1+flush-179:000:30:010
3923075998579,5cyclictest3932611-21kworker/u8:0+events_unbound20:05:250
3923077998475,6cyclictest3995887-21kworker/u8:0+events_unbound23:10:001
3923075998375,5cyclictest4010291-21kworker/u8:3+events_unbound23:45:150
3923077998277,3cyclictest3991023-21kworker/u8:3+flush-179:023:25:001
3923075998271,9cyclictest1213033-21systemd-journal22:30:000
3923075998170,4cyclictest3260786-21kworker/u8:4+events_unbound19:50:220
3923077998074,5cyclictest3959900-21kworker/u8:2+flush-179:021:05:191
3923075998075,3cyclictest3260786-21kworker/u8:4+events_unbound19:15:170
3923077997972,4cyclictest3976171-21kworker/u8:3+events_unbound22:00:261
3923077997972,4cyclictest3976171-21kworker/u8:3+events_unbound22:00:251
3923077997969,8cyclictest3932611-21kworker/u8:0+flush-179:019:50:011
3923077997965,9cyclictest4008618-21kworker/u8:0+flush-179:023:45:211
3923075997871,5cyclictest3948435-21kworker/u8:1+flush-179:020:45:160
3923077997770,5cyclictest3959900-21kworker/u8:2+flush-179:021:15:161
3923077997770,5cyclictest3959900-21kworker/u8:2+flush-179:021:15:161
3923077997770,5cyclictest3935764-21kworker/u8:2+flush-179:019:55:171
3923075997772,4cyclictest3260786-21kworker/u8:4+flush-179:019:35:260
3923075997764,4cyclictest3991023-21kworker/u8:3+flush-179:023:05:150
3923075997761,6cyclictest4008618-21kworker/u8:0+events_unbound00:10:190
3923077997669,4cyclictest3965182-21kworker/u8:0+flush-179:021:45:181
3923077997666,8cyclictest4008618-21kworker/u8:0+flush-179:000:10:241
3923075997667,4cyclictest3260786-21kworker/u8:4+events_unbound19:20:230
3923077997467,5cyclictest4011832-21latency_hist23:45:001
3923077997462,10cyclictest3995887-21kworker/u8:0+events_unbound23:10:131
3923075997468,4cyclictest4021720-21kworker/u8:2+flush-179:000:35:220
3923077997363,7cyclictest1213033-21systemd-journal00:25:011
3923075997368,4cyclictest4000664-21kworker/u8:1+flush-179:023:35:230
3923077997062,5cyclictest4021676-21kworker/u8:1+flush-179:000:25:261
3923077997061,6cyclictest3260786-21kworker/u8:4+events_unbound19:20:171
3923077997060,7cyclictest3958021-21latency_hist21:00:021
3923075996965,3cyclictest3965182-21kworker/u8:0+flush-179:021:30:300
3923084996859,7cyclictest4024899-21turbostat00:25:003
3923077996860,6cyclictest3986087-21kworker/u8:1+flush-179:022:30:211
3923077996554,9cyclictest1213033-21systemd-journal21:40:181
3923077996255,5cyclictest3995887-21kworker/u8:0+events_unbound23:00:141
3923077996150,8cyclictest3945524-21/usr/sbin/munin20:20:231
3923077996149,9cyclictest1213033-21systemd-journal21:10:151
3923077996055,4cyclictest4000664-21kworker/u8:1+flush-179:023:29:561
3923077996052,5cyclictest3991023-21kworker/u8:3+flush-179:023:30:211
3923077996051,6cyclictest3922971-21latency_hist19:10:011
3923077995950,5cyclictest3260786-21kworker/u8:4+events_unbound19:40:251
3923084995452,1cyclictest0-21swapper/319:16:583
3923077995450,3cyclictest3983923-21kworker/u8:0+events_unbound22:20:161
3923081995047,2cyclictest0-21swapper/223:13:582
3923077995045,4cyclictest3995887-21kworker/u8:0+flush-179:022:59:561
4577091480,13ptp4l441ktimers/319:10:013
3923077994739,6cyclictest3932611-21kworker/u8:0+flush-179:020:15:011
3923084994640,5cyclictest3927788-21turbostat19:25:003
3923084994536,7cyclictest3951648-21turbostat20:40:003
3923081994441,2cyclictest0-21swapper/200:38:592
392308199430,41cyclictest0-21swapper/219:15:002
392308499400,39cyclictest0-21swapper/300:05:593
392308499400,1cyclictest0-21swapper/321:12:593
3923081994037,2cyclictest0-21swapper/222:32:592
3923084993836,1cyclictest0-21swapper/323:29:543
3923084993836,1cyclictest0-21swapper/300:04:593
392308499380,1cyclictest0-21swapper/321:34:553
392308199380,36cyclictest0-21swapper/219:39:592
392308499370,36cyclictest0-21swapper/300:19:593
3923081993734,2cyclictest0-21swapper/220:49:542
392308199370,35cyclictest0-21swapper/219:32:582
392308499360,1cyclictest0-21swapper/323:58:583
392308499360,1cyclictest0-21swapper/321:58:583
3923081993634,1cyclictest0-21swapper/223:54:592
3923081993633,2cyclictest0-21swapper/222:51:002
3923081993633,2cyclictest0-21swapper/222:51:002
3923081993633,2cyclictest0-21swapper/221:44:562
3923081993633,2cyclictest0-21swapper/220:15:592
3923081993633,2cyclictest0-21swapper/200:26:592
392308199360,1cyclictest0-21swapper/221:03:002
392308199360,1cyclictest0-21swapper/220:54:592
3923084993533,1cyclictest0-21swapper/319:42:593
392308499350,34cyclictest0-21swapper/321:54:593
3923081993532,2cyclictest0-21swapper/220:27:592
3923084993432,1cyclictest0-21swapper/322:38:593
3923084993432,1cyclictest0-21swapper/322:33:003
3923084993432,1cyclictest0-21swapper/322:08:583
3923084993432,1cyclictest0-21swapper/319:58:593
392308499340,21cyclictest0-21swapper/320:55:143
3923081993432,1cyclictest0-21swapper/223:25:002
3923081993431,2cyclictest0-21swapper/222:36:002
4577091330,2ptp4l61490irq/134-eno1-TxRx-021:05:133
392308499330,27cyclictest0-21swapper/320:20:133
392308499330,26cyclictest0-21swapper/320:05:133
3923081993331,1cyclictest0-21swapper/221:09:592
3923081993330,2cyclictest0-21swapper/222:45:592
3923081993330,2cyclictest0-21swapper/220:59:552
3923084993230,1cyclictest0-21swapper/319:36:003
392308499320,26cyclictest0-21swapper/322:00:143
392308499320,26cyclictest0-21swapper/322:00:143
3923081993230,1cyclictest0-21swapper/223:44:592
3923081993230,1cyclictest0-21swapper/220:39:592
3923084993129,1cyclictest0-21swapper/322:42:583
3923084993127,1cyclictest0-21swapper/321:00:143
392308499310,30cyclictest0-21swapper/300:38:593
3923081993128,2cyclictest0-21swapper/222:21:002
3923081993128,2cyclictest0-21swapper/221:55:592
392308199310,29cyclictest0-21swapper/222:41:592
4577091300,7ptp4l441ktimers/319:30:013
4577091300,7ptp4l441ktimers/319:30:013
3923084993025,1cyclictest0-21swapper/320:50:133
392308499302,2cyclictest3997509-21turbostat22:59:593
3923084993022,6cyclictest4000697-21turbostat23:10:003
392308499300,28cyclictest0-21swapper/323:50:133
392308499300,26cyclictest0-21swapper/322:25:123
3923081993028,1cyclictest0-21swapper/223:29:592
3923081993027,2cyclictest0-21swapper/223:55:032
3923081993027,2cyclictest0-21swapper/221:54:552
3923081993027,2cyclictest0-21swapper/200:10:132
392308199300,29cyclictest0-21swapper/222:10:112
3923084992927,1cyclictest0-21swapper/320:41:583
3923084992927,1cyclictest0-21swapper/319:10:153
3923081992926,2cyclictest0-21swapper/222:05:132
3923081992926,2cyclictest0-21swapper/221:20:152
3923081992926,2cyclictest0-21swapper/221:15:152
3923081992926,2cyclictest0-21swapper/221:15:152
3923081992926,2cyclictest0-21swapper/200:30:132
392308199290,27cyclictest0-21swapper/223:30:132
392308199290,27cyclictest0-21swapper/221:10:142
392308199290,1cyclictest0-21swapper/219:15:152
231999290,16rtkit-daemon3922463-21ntp_states19:05:290
4577091280,7ptp4l61490irq/134-eno1-TxRx-021:25:003
4577091280,7ptp4l61490irq/134-eno1-TxRx-020:30:003
4577091280,6ptp4l441ktimers/322:25:013
4577091280,5ptp4l441ktimers/323:15:003
4577091280,5ptp4l441ktimers/319:55:003
3923084992826,1cyclictest0-21swapper/323:45:133
3923084992826,1cyclictest0-21swapper/320:10:593
392308499280,2cyclictest0-21swapper/321:40:103
392308499280,1cyclictest0-21swapper/323:00:593
3923081992826,1cyclictest0-21swapper/222:19:592
392308199280,27cyclictest0-21swapper/223:15:122
392308199280,27cyclictest0-21swapper/221:35:142
392308199280,26cyclictest0-21swapper/221:30:022
392308199280,26cyclictest0-21swapper/219:20:122
4577091270,6ptp4l61490irq/134-eno1-TxRx-023:44:593
4577091270,6ptp4l61490irq/134-eno1-TxRx-023:25:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-022:14:553
4577091270,6ptp4l441ktimers/321:39:563
4577091270,6ptp4l441ktimers/319:34:563
4577091270,5ptp4l441ktimers/323:20:003
4577091270,5ptp4l441ktimers/322:55:013
4577091270,5ptp4l441ktimers/322:55:003
4577091270,5ptp4l441ktimers/322:49:563
4577091270,5ptp4l441ktimers/321:29:593
4577091270,5ptp4l441ktimers/320:20:003
4577091270,5ptp4l441ktimers/319:49:563
392308499270,26cyclictest0-21swapper/321:48:003
392308499270,25cyclictest4008647-21turbostat23:35:003
392308199270,24cyclictest0-21swapper/223:09:562
4577091260,5ptp4l441ktimers/320:04:553
3923081992623,2cyclictest0-21swapper/223:47:592
3923081992623,2cyclictest0-21swapper/219:28:592
3923081992623,2cyclictest0-21swapper/219:28:592
392308199260,24cyclictest0-21swapper/222:03:002
392308199260,24cyclictest0-21swapper/222:02:592
392308199260,24cyclictest0-21swapper/220:21:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-000:15:003
4577091250,4ptp4l441ktimers/323:39:563
4577091250,4ptp4l441ktimers/321:19:563
4577091250,4ptp4l441ktimers/321:19:563
4577091250,4ptp4l441ktimers/300:34:563
3923084992523,1cyclictest0-21swapper/300:29:563
3923081992523,1cyclictest0-21swapper/219:59:592
392308199250,2cyclictest0-21swapper/221:28:592
392308199250,24cyclictest0-21swapper/200:22:592
4577091240,5ptp4l441ktimers/320:34:553
4577091240,4ptp4l61490irq/134-eno1-TxRx-022:19:563
4577091240,4ptp4l441ktimers/320:49:553
3923081992422,1cyclictest0-21swapper/223:04:592
3923081992422,1cyclictest0-21swapper/220:43:592
3923081992421,2cyclictest0-21swapper/223:36:592
3923081992421,2cyclictest0-21swapper/222:57:582
3923081992421,2cyclictest0-21swapper/222:27:592
3923081992017,2cyclictest0-21swapper/219:49:552
3923081992017,2cyclictest0-21swapper/219:42:002
3923081992017,2cyclictest0-21swapper/200:17:592
3923081991917,1cyclictest0-21swapper/220:12:592
3923081991916,2cyclictest0-21swapper/220:03:592
3923081991513,1cyclictest0-21swapper/220:34:582
3923081991512,2cyclictest0-21swapper/200:00:132
3923081991311,1cyclictest0-21swapper/200:09:592
39230819997,1cyclictest0-21swapper/221:45:582
39230819997,1cyclictest0-21swapper/219:50:142
39230819963,2cyclictest0-21swapper/220:06:022
39230819940,4cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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