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2026-05-30 - 14:50
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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 Sat May 30, 2026 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
389968599118114,3cyclictest3985013-21kworker/u8:1+events_unbound00:04:010
389968799112101,8cyclictest3921870-21latency_hist20:20:011
38996859910898,7cyclictest3955824-21latency_hist22:05:000
38996879910796,8cyclictest3957410-21latency_hist22:10:021
38996859910692,10cyclictest1213033-21systemd-journal23:30:150
389968599106101,4cyclictest3957445-21kworker/u8:2+events_unbound22:20:240
38996859910388,11cyclictest3939637-21latency_hist21:15:000
38996859910196,4cyclictest3992990-21kworker/u8:3+flush-179:000:20:010
38996859910196,4cyclictest3970433-21kworker/u8:3+flush-179:022:55:230
3899687999892,4cyclictest3928733-21kworker/u8:0+flush-179:021:05:251
3899685999691,4cyclictest3899606-21kworker/u8:2+flush-179:019:20:210
3899685999489,3cyclictest3985013-21kworker/u8:1+flush-179:000:05:150
3899685999387,4cyclictest3904360-21kworker/u8:0+events_unbound19:35:240
3899685999086,3cyclictest3985013-21kworker/u8:1+flush-179:000:35:240
3899685998985,3cyclictest3951080-21kworker/u8:0+events_unbound22:25:130
3899685998984,4cyclictest3985013-21kworker/u8:1+flush-179:000:30:230
3899685998880,3cyclictest3979924-21kworker/u8:0+events_unbound23:45:230
3899687998780,6cyclictest3970433-21kworker/u8:3+flush-179:022:50:001
3899687998778,6cyclictest3943128-21kworker/u8:3+flush-179:021:30:001
3899685998682,3cyclictest3943125-21kworker/u8:1+events_unbound21:45:230
3899685998682,3cyclictest3931728-21kworker/u8:3+events_unbound20:50:230
3899685998682,3cyclictest3910209-21kworker/u8:1+events_unbound19:50:150
3899685998680,4cyclictest3928733-21kworker/u8:0+flush-179:020:55:160
3899685998678,5cyclictest3917890-21kworker/u8:1+events_unbound20:35:010
3899687998566,16cyclictest3904360-21kworker/u8:0+flush-179:019:25:151
3899685998580,4cyclictest3965608-21kworker/u8:2+flush-179:023:25:250
3899687998474,8cyclictest3982041-21kworker/u8:3+events_unbound23:40:001
3899687998373,5cyclictest3904360-21kworker/u8:0+flush-179:019:50:011
3899685998372,8cyclictest510-21rs:main0
3899685998278,3cyclictest3955859-21kworker/u8:3+events_unbound22:09:560
3899685998277,4cyclictest3943128-21kworker/u8:3+flush-179:021:35:250
3899685998176,4cyclictest3962223-21kworker/u8:1+flush-179:022:30:140
3899685998175,4cyclictest3917890-21kworker/u8:1+events_unbound20:40:210
3899685998173,6cyclictest3975436-21apt-get23:05:130
3899685998173,5cyclictest3907576-21kworker/u8:4+events_unbound19:40:140
3899687998074,4cyclictest3913892-21kworker/u8:2+flush-179:020:00:001
3899687997966,12cyclictest3989759-21kworker/u8:2+events_unbound23:50:011
389968799791,74cyclictest1-21systemd22:33:131
3899685997974,3cyclictest3921288-21kworker/u8:0+events_unbound20:20:150
3899685997974,3cyclictest3898572-21kworker/u8:1+events_unbound19:10:200
3899685997973,4cyclictest3910209-21kworker/u8:1+events_unbound19:55:160
3899685997968,7cyclictest3968814-21latency_hist22:45:000
3899685997873,4cyclictest3979924-21kworker/u8:0+flush-179:023:35:210
3899685997868,7cyclictest3899565-21latency_hist19:10:010
3899685997771,4cyclictest3893515-21kworker/u8:0+flush-179:019:15:190
3899687997566,7cyclictest3951080-21kworker/u8:0+events_unbound22:25:221
3899687997535,34cyclictest714-21Xorg00:08:591
3899687997467,4cyclictest3931663-21kworker/u8:2+events_unbound21:35:011
3899685997470,3cyclictest3921288-21kworker/u8:0+events_unbound20:30:130
3899685997469,3cyclictest3917890-21kworker/u8:1+events_unbound20:10:180
3899687997364,6cyclictest3901179-21latency_hist19:15:011
3899687997363,8cyclictest3904375-21latency_hist19:25:011
3899685997368,4cyclictest3928733-21kworker/u8:0+flush-179:020:45:220
3899685997368,3cyclictest3943128-21kworker/u8:3+events_unbound21:30:190
3899687997257,11cyclictest3979968-21apt-get23:20:001
3899685997268,3cyclictest4001193-21kworker/u8:0+events_unbound00:25:260
3899685997268,3cyclictest3928733-21kworker/u8:0+events_unbound21:15:260
3899685997166,4cyclictest3913892-21kworker/u8:2+flush-179:020:05:280
3899685997164,5cyclictest3931663-21kworker/u8:2+events_unbound21:00:200
3899685997160,8cyclictest3958995-21latency_hist22:15:020
3899687997062,5cyclictest3913914-21latency_hist19:55:001
3899687996957,8cyclictest3904410-21kworker/u8:3+flush-179:019:30:211
3899685996863,4cyclictest3967193-21kworker/u8:0+flush-179:022:50:250
3899685996863,4cyclictest3904360-21kworker/u8:0+events_unbound20:00:240
3899685996861,5cyclictest1213033-21systemd-journal22:40:010
3899685996861,5cyclictest1213033-21systemd-journal22:40:000
3899685996858,7cyclictest3905961-21latency_hist19:30:010
3899687996763,2cyclictest3898572-21kworker/u8:1+events_unbound19:15:211
3899687996755,9cyclictest3967193-21kworker/u8:0+flush-179:023:00:001
3899687996744,17cyclictest3904360-21kworker/u8:0+flush-179:020:00:221
3899685996762,4cyclictest3965608-21kworker/u8:2+flush-179:022:45:250
3899685996762,4cyclictest3943128-21kworker/u8:3+flush-179:021:50:250
3899685996761,5cyclictest3992990-21kworker/u8:3+events_unbound00:20:170
3899687996659,4cyclictest3975180-21latency_hist23:05:011
3899687996656,7cyclictest3930098-21latency_hist20:45:011
3899685996661,4cyclictest3957445-21kworker/u8:2+flush-179:022:19:550
3899687996559,4cyclictest4002797-21apt-get00:30:111
3899687996457,5cyclictest3941513-21latency_hist21:20:011
3899685996459,4cyclictest3928733-21kworker/u8:0+flush-179:021:20:140
3899685996459,4cyclictest3910209-21kworker/u8:1+flush-179:019:45:200
3899685996358,4cyclictest3985013-21kworker/u8:1+flush-179:023:55:260
3899685996355,6cyclictest3979968-21apt-get23:20:010
3899687996257,3cyclictest3943125-21kworker/u8:1+flush-179:021:55:121
3899687996255,5cyclictest3951080-21kworker/u8:0+events_unbound22:25:011
3899687996254,6cyclictest3943128-21kworker/u8:3+flush-179:021:45:191
3899685996255,5cyclictest3917890-21kworker/u8:1+flush-179:020:30:010
3899687996155,4cyclictest3999626-21apt-get00:20:111
3899685996150,9cyclictest3921288-21kworker/u8:0+flush-179:020:15:210
3899687996052,6cyclictest3992932-21latency_hist00:00:011
3899687996051,6cyclictest3967193-21kworker/u8:0+flush-179:023:05:191
3899687996047,8cyclictest3943125-21kworker/u8:1+flush-179:021:40:001
3899685996056,3cyclictest3970433-21kworker/u8:3+flush-179:023:04:560
3899687995853,2cyclictest3928733-21kworker/u8:0+events_unbound20:50:141
3899685995854,3cyclictest3982041-21kworker/u8:3+events_unbound23:40:220
3899685995853,4cyclictest3943128-21kworker/u8:3+events_unbound21:40:170
3899690995754,2cyclictest0-21swapper/200:13:592
3899687995646,9cyclictest3928733-21kworker/u8:0+flush-179:020:45:161
3899687995441,10cyclictest1213033-21systemd-journal20:25:001
3899687995346,5cyclictest3955859-21kworker/u8:3+events_unbound22:15:131
3899687995244,5cyclictest3943091-21latency_hist21:25:011
3899687995146,3cyclictest3985013-21kworker/u8:1+events_unbound00:20:011
3899685995141,8cyclictest3977020-21apt-get23:10:110
3899687995046,3cyclictest3979924-21kworker/u8:0+events_unbound23:50:231
389968799500,47cyclictest3927038-21apt-config20:35:021
3899685995045,4cyclictest3928733-21kworker/u8:0+events_unbound21:05:180
4577091490,13ptp4l441ktimers/319:10:013
3899687994841,5cyclictest3913892-21kworker/u8:2+flush-179:020:10:011
3899687994841,4cyclictest3904360-21kworker/u8:0+flush-179:019:35:151
3899687994839,6cyclictest3985013-21kworker/u8:1+flush-179:000:10:261
3899687994838,7cyclictest3921288-21kworker/u8:0+events_unbound20:25:231
389968799480,30cyclictest3927089-21cat20:35:021
3899685994842,5cyclictest3943125-21kworker/u8:1+flush-179:021:55:210
3899687994744,1cyclictest3931663-21kworker/u8:2+events_unbound21:00:131
3899687994738,7cyclictest3920279-21latency_hist20:15:011
3899685994736,4cyclictest3989759-21kworker/u8:2+events_unbound23:50:110
3899687994642,3cyclictest3989759-21kworker/u8:2+flush-179:000:00:021
3899687994642,3cyclictest3982041-21kworker/u8:3+flush-179:023:40:211
3899687994640,5cyclictest3951080-21kworker/u8:0+flush-179:021:54:121
3899687994636,6cyclictest321-21hwrng21:10:591
3899685994637,7cyclictest3943125-21kworker/u8:1+events_unbound21:25:110
3899687994541,3cyclictest3959026-21systemd-run22:15:001
3899687994539,5cyclictest3970433-21kworker/u8:3+events_unbound23:15:001
3899687994539,5cyclictest3943128-21kworker/u8:3+flush-179:021:40:241
3899687994537,6cyclictest3907576-21kworker/u8:4+flush-179:019:40:151
3899687994438,4cyclictest3967193-21kworker/u8:0+events_unbound22:50:251
3899687994425,17cyclictest3982496-21hwlatdetect23:25:161
3899685994434,8cyclictest3992990-21kworker/u8:3+flush-179:000:15:010
3899692994341,1cyclictest0-21swapper/300:13:593
3899687994333,8cyclictest3980475-21apt-get23:20:101
3899685994338,4cyclictest3904410-21kworker/u8:3+flush-179:019:30:270
389969099420,40cyclictest0-21swapper/222:44:582
389968799420,40cyclictest3983402-21turbostat23:34:551
389969299410,1cyclictest0-21swapper/321:40:583
3899687994132,7cyclictest4002542-21latency_hist00:30:011
3899687994127,13cyclictest0-21swapper/122:43:581
389969299390,37cyclictest3939653-21turbostat21:15:003
389969099390,36cyclictest0-21swapper/222:22:592
389968799394,11cyclictest2304-21lightdm-gtk-gre22:39:001
389968799394,11cyclictest2304-21lightdm-gtk-gre22:38:591
3899692993835,2cyclictest0-21swapper/323:21:593
3899692993833,4cyclictest3991349-21turbostat23:55:003
389969299380,37cyclictest3923489-21turbostat20:25:003
389969099380,36cyclictest0-21swapper/223:35:002
389969099380,36cyclictest0-21swapper/219:22:592
389969099380,35cyclictest0-21swapper/223:23:592
389969099380,35cyclictest0-21swapper/223:00:002
389969099380,35cyclictest0-21swapper/219:45:012
3899692993735,1cyclictest0-21swapper/323:07:593
3899692993735,1cyclictest0-21swapper/319:43:583
3899692993734,2cyclictest0-21swapper/322:12:593
389969299370,35cyclictest0-21swapper/322:31:593
389969299370,35cyclictest0-21swapper/320:15:583
389969099370,35cyclictest0-21swapper/223:14:552
389969099370,35cyclictest0-21swapper/222:39:592
389969099370,35cyclictest0-21swapper/222:39:592
3899692993634,1cyclictest0-21swapper/323:49:553
3899692993634,1cyclictest0-21swapper/322:00:593
3899692993634,1cyclictest0-21swapper/321:49:593
3899692993634,1cyclictest0-21swapper/319:35:593
3899692993631,4cyclictest3943101-21turbostat21:25:003
389969299360,35cyclictest0-21swapper/319:17:003
389969299360,35cyclictest0-21swapper/300:23:593
389969299360,1cyclictest0-21swapper/320:37:583
3899690993634,1cyclictest0-21swapper/222:30:002
3899690993634,1cyclictest0-21swapper/220:20:002
3899690993633,2cyclictest0-21swapper/220:27:592
389968799363,12cyclictest2304-21lightdm-gtk-gre22:01:001
3899692993533,1cyclictest0-21swapper/321:32:003
3899692993533,1cyclictest0-21swapper/321:25:583
3899692993533,1cyclictest0-21swapper/320:59:593
3899692993533,1cyclictest0-21swapper/320:05:003
3899692993530,4cyclictest3930111-21turbostat20:45:003
389969299350,1cyclictest0-21swapper/322:08:593
3899690993532,2cyclictest0-21swapper/220:39:562
3899690993532,2cyclictest0-21swapper/220:10:012
3899690993431,2cyclictest0-21swapper/222:54:552
3899690993431,2cyclictest0-21swapper/200:31:592
3899690993430,2cyclictest0-21swapper/221:08:592
3899690993430,2cyclictest0-21swapper/219:15:592
3899692993331,1cyclictest0-21swapper/319:23:593
3899690993331,1cyclictest0-21swapper/200:25:002
3899690993330,2cyclictest0-21swapper/221:57:592
389969099330,31cyclictest0-21swapper/222:06:592
3899690993229,2cyclictest0-21swapper/200:01:592
3899687993226,4cyclictest4005223-21phc2sys00:35:211
3899692993129,1cyclictest0-21swapper/322:44:583
3899692993128,2cyclictest0-21swapper/300:39:593
3899687993126,3cyclictest0-21swapper/120:55:131
3899692993028,1cyclictest0-21swapper/300:05:593
3899692993027,2cyclictest0-21swapper/323:39:593
3899690993027,2cyclictest0-21swapper/221:50:122
3899690993027,2cyclictest0-21swapper/220:53:592
3899690993027,2cyclictest0-21swapper/200:25:152
389969099300,2cyclictest0-21swapper/221:34:542
389969099300,28cyclictest0-21swapper/222:30:022
389969099300,28cyclictest0-21swapper/219:30:122
4577091290,8ptp4l441ktimers/322:50:003
4577091290,4ptp4l441ktimers/321:19:563
3899692992927,1cyclictest0-21swapper/319:29:563
3899692992924,4cyclictest3984985-21turbostat23:35:013
3899692992924,4cyclictest3973599-21turbostat23:00:013
389969299290,27cyclictest0-21swapper/321:55:113
389969299290,27cyclictest0-21swapper/319:10:123
3899690992926,2cyclictest0-21swapper/223:39:592
3899690992926,2cyclictest0-21swapper/223:00:132
3899690992926,2cyclictest0-21swapper/222:00:122
3899690992926,2cyclictest0-21swapper/220:40:582
3899690992926,2cyclictest0-21swapper/220:22:582
389969099290,2cyclictest0-21swapper/223:50:122
389969099290,2cyclictest0-21swapper/223:45:122
389969099290,2cyclictest0-21swapper/221:10:122
389969099290,27cyclictest0-21swapper/219:10:122
4577091280,7ptp4l441ktimers/319:50:013
4577091280,6ptp4l441ktimers/323:45:003
3899692992826,1cyclictest0-21swapper/321:50:133
3899692992825,2cyclictest0-21swapper/323:00:123
3899692992825,2cyclictest0-21swapper/322:30:023
3899692992825,2cyclictest0-21swapper/322:15:123
389969299280,2cyclictest0-21swapper/323:20:013
389969299280,27cyclictest0-21swapper/319:30:123
389969299280,26cyclictest0-21swapper/322:20:123
3899690992825,2cyclictest0-21swapper/222:12:582
3899690992825,2cyclictest0-21swapper/200:35:132
389969099280,2cyclictest0-21swapper/221:15:012
389969099280,2cyclictest0-21swapper/220:34:002
4577091270,7ptp4l61490irq/134-eno1-TxRx-000:00:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-000:05:003
4577091270,6ptp4l441ktimers/322:55:003
4577091270,6ptp4l441ktimers/321:09:593
4577091270,6ptp4l441ktimers/320:00:003
4577091270,6ptp4l441ktimers/300:35:013
4577091270,6ptp4l441ktimers/300:30:013
4577091270,6ptp4l441ktimers/300:19:563
3899690992724,2cyclictest0-21swapper/221:45:122
4577091260,6ptp4l441ktimers/323:29:553
4577091260,6ptp4l441ktimers/320:15:013
4577091260,5ptp4l441ktimers/321:04:563
4577091260,5ptp4l441ktimers/320:54:553
4577091260,4ptp4l441ktimers/320:50:013
3899692992624,1cyclictest0-21swapper/323:14:553
3899692992624,1cyclictest0-21swapper/322:38:593
3899692992624,1cyclictest0-21swapper/322:38:593
3899690992623,2cyclictest0-21swapper/222:19:002
3899690992623,2cyclictest0-21swapper/220:10:132
389969099260,2cyclictest0-21swapper/222:46:002
389969099260,24cyclictest0-21swapper/223:27:592
389969099260,24cyclictest0-21swapper/221:24:592
389969099260,24cyclictest0-21swapper/221:04:002
389969099260,24cyclictest0-21swapper/219:50:592
389969099260,24cyclictest0-21swapper/219:25:592
389969099260,24cyclictest0-21swapper/200:06:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-020:29:553
4577091250,5ptp4l441ktimers/320:34:553
389969299250,23cyclictest0-21swapper/319:50:133
389969299250,1cyclictest0-21swapper/320:07:593
3899690992523,1cyclictest0-21swapper/221:44:592
3899690992522,2cyclictest0-21swapper/223:57:592
3899690992522,2cyclictest0-21swapper/219:46:592
4577091240,5ptp4l61490irq/134-eno1-TxRx-021:40:013
3899690992422,1cyclictest0-21swapper/223:09:592
3899690992321,1cyclictest0-21swapper/220:50:012
3899690992320,2cyclictest0-21swapper/219:37:592
3899690992118,2cyclictest0-21swapper/220:59:582
3899690992017,2cyclictest0-21swapper/219:55:592
3899690991815,2cyclictest0-21swapper/223:43:592
3899690991715,1cyclictest0-21swapper/223:19:592
3899690991714,2cyclictest0-21swapper/221:38:002
3899690991714,2cyclictest0-21swapper/221:27:592
389968799170,16cyclictest0-21swapper/119:10:011
3899690991613,2cyclictest0-21swapper/200:20:002
3899690991513,1cyclictest0-21swapper/220:04:592
38996909920,1cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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