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2026-06-22 - 08:31
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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 Mon Jun 22, 2026 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
350860899133128,4cyclictest3602922-21kworker/u8:4+events_unbound00:04:001
350860499115107,5cyclictest3516672-21kworker/u8:0+flush-179:019:45:000
350860499115106,6cyclictest3570271-21latency_hist22:20:010
350860899114106,6cyclictest3572110-21kworker/u8:0+events_unbound22:30:251
350860899110103,4cyclictest3612250-21latency_hist00:30:011
35086089910895,4cyclictest3528083-21kworker/u8:3+events_unbound20:25:231
350860899107102,4cyclictest3521646-21kworker/u8:1+flush-179:020:00:251
35086089910489,11cyclictest3602666-40mandb00:00:001
35086089910193,6cyclictest3591281-21kworker/u8:1+events_unbound23:45:201
35086049910195,4cyclictest3591281-21kworker/u8:1+flush-179:023:45:010
35086089910091,7cyclictest3555469-21kworker/u8:3+events_unbound22:05:021
35086049910087,10cyclictest1213033-21systemd-journal20:10:000
3508608999993,4cyclictest3578279-21kworker/u8:3+events_unbound23:05:151
3508608999885,6cyclictest3506989-21kworker/u8:2+events_unbound19:10:231
3508604999788,6cyclictest3565294-21kworker/u8:1+flush-179:022:10:000
3508608999489,4cyclictest3539487-21kworker/u8:0+events_unbound21:55:241
3508608999488,4cyclictest3550625-21kworker/u8:2+flush-179:021:30:211
3508608999384,6cyclictest3528083-21kworker/u8:3+events_unbound20:15:201
3508604999381,8cyclictest3572111-21kworker/u8:1+events_unbound22:50:010
3508604999284,6cyclictest3605880-21latency_hist00:10:010
3508608999181,7cyclictest3511922-21latency_hist19:20:021
3508608999086,3cyclictest3612489-21kworker/u8:1+flush-179:000:35:231
3508608999085,4cyclictest2354735-21kworker/u8:4+events_unbound19:25:251
3508604999083,5cyclictest3612489-21kworker/u8:1+flush-179:000:35:200
3508604999083,5cyclictest3521646-21kworker/u8:1+flush-179:019:50:020
3508604999083,5cyclictest3521646-21kworker/u8:1+flush-179:019:50:010
3508608998984,4cyclictest3521776-21kworker/u8:3+flush-179:019:55:271
3508608998983,4cyclictest3528083-21kworker/u8:3+flush-179:020:45:211
3508608998982,5cyclictest3602922-21kworker/u8:4+events_unbound00:05:161
3508608998883,3cyclictest3555469-21kworker/u8:3+flush-179:022:15:221
3508608998783,3cyclictest3578279-21kworker/u8:3+events_unbound23:10:241
3508608998781,4cyclictest3587448-21kworker/u8:0+flush-179:023:30:211
3508604998773,11cyclictest1213033-21systemd-journal20:32:240
3508608998681,3cyclictest3572110-21kworker/u8:0+flush-179:022:45:201
3508608998680,4cyclictest3544334-21kworker/u8:3+flush-179:021:10:141
3508608998580,4cyclictest3567755-21kworker/u8:0+events_unbound22:10:231
3508608998579,4cyclictest3539487-21kworker/u8:0+flush-179:021:25:191
3508608998574,4cyclictest3529975-21kworker/u8:1+events_unbound20:40:161
3508608998477,5cyclictest3539487-21kworker/u8:0+events_unbound21:45:031
3508604998477,5cyclictest3607340-21kworker/u8:0+flush-179:000:25:010
3508608998378,3cyclictest3562093-21kworker/u8:2+flush-179:022:00:201
3508608998277,4cyclictest3587448-21kworker/u8:0+events_unbound23:20:251
3508608998177,3cyclictest3516725-21kworker/u8:2+flush-179:019:45:211
3508608998177,3cyclictest3516725-21kworker/u8:2+flush-179:019:45:211
3508608998176,4cyclictest3528083-21kworker/u8:3+flush-179:020:10:241
3508608998176,3cyclictest3555469-21kworker/u8:3+flush-179:021:50:231
3508608998176,3cyclictest3528083-21kworker/u8:3+flush-179:020:35:131
3508608998176,3cyclictest3528083-21kworker/u8:3+flush-179:020:35:131
3508608998076,3cyclictest3539544-21kworker/u8:2+flush-179:020:50:261
3508608998074,5cyclictest3607449-21kworker/u8:2+flush-179:000:30:201
3508608998068,8cyclictest510-21rs:main1
3508608997975,3cyclictest3597056-21kworker/u8:0+events_unbound23:50:231
3508608997975,3cyclictest3547499-21kworker/u8:1+flush-179:021:15:261
3508608997974,4cyclictest3528083-21kworker/u8:3+flush-179:020:30:281
3508608997973,4cyclictest3607449-21kworker/u8:2+flush-179:000:15:201
3508608997968,9cyclictest3516945-21apt-get19:35:121
3508604997967,8cyclictest3539544-21kworker/u8:2+flush-179:021:00:250
3508608997873,4cyclictest3591281-21kworker/u8:1+flush-179:000:20:211
3508604997869,6cyclictest3537905-21latency_hist20:40:010
3508604997869,6cyclictest3537905-21latency_hist20:40:010
3508608997772,4cyclictest3568712-21kworker/u8:2+flush-179:022:20:221
3508608997772,4cyclictest3550625-21kworker/u8:2+flush-179:021:20:261
3508608997772,4cyclictest2354735-21kworker/u8:4+flush-179:019:20:201
3508608997772,4cyclictest2354735-21kworker/u8:4+flush-179:019:20:201
3508604997765,9cyclictest3591237-21latency_hist23:25:010
3508604997666,8cyclictest3572130-21apt-get22:25:110
3508608997570,4cyclictest3524891-21kworker/u8:2+events_unbound20:05:231
3508608997565,8cyclictest3594668-21apt-get23:35:121
3508608997465,3cyclictest3516672-21kworker/u8:0+events_unbound20:20:241
3508608997460,11cyclictest3597622-21apt-get23:45:001
3508608997360,10cyclictest3558617-21latency_hist21:45:011
3508604997354,12cyclictest3516672-21kworker/u8:0+flush-179:020:20:230
3508608997268,3cyclictest3572110-21kworker/u8:0+flush-179:022:57:031
3508604997261,8cyclictest3578279-21kworker/u8:3+flush-179:023:20:010
3508604997256,12cyclictest3518329-21http19:40:000
3508608997167,3cyclictest3544334-21kworker/u8:3+events_unbound21:05:241
3508608997066,3cyclictest3505945-21kworker/u8:1+flush-179:019:30:261
3508608997058,4cyclictest3587448-21kworker/u8:0+events_unbound23:25:171
3508608997058,4cyclictest3587448-21kworker/u8:0+events_unbound23:25:161
3508608996964,4cyclictest3572111-21kworker/u8:1+flush-179:022:50:271
3508608996963,4cyclictest3578279-21kworker/u8:3+flush-179:023:00:151
3508608996963,4cyclictest3578279-21kworker/u8:3+flush-179:023:00:141
3508608996961,6cyclictest3518816-21apt-get19:40:111
3508604996955,10cyclictest2354735-21kworker/u8:4+flush-179:019:20:170
3508604996955,10cyclictest2354735-21kworker/u8:4+flush-179:019:20:160
3508608996863,4cyclictest3572111-21kworker/u8:1+events_unbound22:40:231
3508608996761,4cyclictest3602922-21kworker/u8:4+events_unbound00:10:111
3508608996761,4cyclictest3602922-21kworker/u8:4+events_unbound00:10:111
3508604996756,8cyclictest1213033-21systemd-journal21:35:240
3508608996560,4cyclictest3578279-21kworker/u8:3+flush-179:023:19:551
3508604996452,9cyclictest3578279-21kworker/u8:3+flush-179:023:05:200
3508608996358,4cyclictest3516672-21kworker/u8:0+flush-179:019:54:261
3508604996353,8cyclictest3521646-21kworker/u8:1+flush-179:019:50:260
3508604996352,7cyclictest3558598-21kworker/u8:1+flush-179:021:45:210
3508604996349,7cyclictest3591281-21kworker/u8:1+events_unbound23:45:010
3508604996259,2cyclictest0-21swapper/021:12:590
3508604996250,8cyclictest3516672-21kworker/u8:0+flush-179:020:15:150
3508608996157,3cyclictest3555469-21kworker/u8:3+flush-179:022:26:251
3508604996056,2cyclictest3539487-21kworker/u8:0+flush-179:021:25:200
3508604996051,6cyclictest1213033-21systemd-journal19:32:240
3508604995951,6cyclictest3506989-21kworker/u8:2+flush-179:019:10:230
3508604995951,5cyclictest3596016-21latency_hist23:40:010
3508604995949,7cyclictest3572111-21kworker/u8:1+flush-179:022:50:000
3508608995852,5cyclictest3539544-21kworker/u8:2+flush-179:021:00:231
3508604995856,1cyclictest0-21swapper/021:57:590
3508604995849,6cyclictest3572111-21kworker/u8:1+flush-179:022:40:140
3508604995747,8cyclictest3602924-21apt-get00:00:100
3508604995747,7cyclictest3607449-21kworker/u8:2+flush-179:000:30:230
3508604995746,8cyclictest3521776-21kworker/u8:3+flush-179:019:55:220
3508604995648,5cyclictest3524891-21kworker/u8:2+flush-179:020:10:020
3508604995645,8cyclictest3572110-21kworker/u8:0+flush-179:022:35:260
3508604995645,8cyclictest3572110-21kworker/u8:0+flush-179:022:35:250
3508604995548,5cyclictest3513770-21apt-get19:25:110
3508604995448,5cyclictest3529975-21kworker/u8:1+flush-179:020:40:200
3508604995443,7cyclictest3578279-21kworker/u8:3+flush-179:023:00:160
3508604995443,7cyclictest3578279-21kworker/u8:3+flush-179:023:00:150
3508604995442,10cyclictest1213033-21systemd-journal22:05:000
3508608995348,4cyclictest3529975-21kworker/u8:1+events_unbound20:59:561
3508604995349,2cyclictest714-21Xorg00:17:580
3508604995348,2cyclictest3607449-21kworker/u8:2+events_unbound00:25:160
3508604995347,5cyclictest3572110-21kworker/u8:0+flush-179:022:30:210
3508604995344,7cyclictest3544334-21kworker/u8:3+flush-179:021:05:170
3508604995344,7cyclictest3539487-21kworker/u8:0+events_unbound21:50:270
3508604995343,7cyclictest1213033-21systemd-journal20:01:010
3508604995249,2cyclictest3602615-21kworker/u8:2+flush-179:023:59:570
3508604995144,5cyclictest3597056-21kworker/u8:0+events_unbound23:50:200
3508604995143,6cyclictest3544284-21latency_hist21:00:010
3508604995141,8cyclictest3588039-21latency_hist23:15:010
3508608995046,3cyclictest3572110-21kworker/u8:0+flush-179:022:35:251
3508608995046,3cyclictest3572110-21kworker/u8:0+flush-179:022:35:241
3508604995043,4cyclictest3555469-21kworker/u8:3+flush-179:022:10:140
350860499501,35cyclictest3541351-21apt-get20:50:130
3508604994938,9cyclictest3505945-21kworker/u8:1+flush-179:019:15:190
3508604994929,18cyclictest3570861-21fschecks_count22:20:150
3508604994927,20cyclictest3508450-21latency_hist19:10:020
4577091480,13ptp4l61490irq/134-eno1-TxRx-019:10:013
3508604994638,6cyclictest3602922-21kworker/u8:4+flush-179:000:10:170
3508604994638,6cyclictest3602922-21kworker/u8:4+flush-179:000:10:170
3508604994633,10cyclictest3555469-21kworker/u8:3+flush-179:021:40:220
3508612994543,1cyclictest0-21swapper/300:30:583
350861299440,43cyclictest3518290-21turbostat19:40:003
3508604994439,3cyclictest3550667-21idleruntime-cro21:20:000
3508604994337,5cyclictest3528083-21kworker/u8:3+flush-179:020:25:230
3508604994336,5cyclictest3550625-21kworker/u8:2+events_unbound21:30:240
3508604994237,4cyclictest3550625-21kworker/u8:2+events_unbound21:20:270
3508604994236,4cyclictest1-21systemd20:50:000
350861299410,39cyclictest3609083-21turbostat00:19:593
350861299400,4cyclictest3601056-21turbostat23:54:593
350861299400,38cyclictest3568689-21turbostat22:15:013
3508604994037,1cyclictest3578279-21kworker/u8:3+events_unbound23:25:130
3508604994037,1cyclictest3578279-21kworker/u8:3+events_unbound23:25:130
350861299390,5cyclictest3539517-21turbostat20:45:003
350861299390,4cyclictest3567103-21turbostat22:10:003
350861299390,36cyclictest0-21swapper/322:40:593
350860999390,37cyclictest0-21swapper/221:15:592
3508612993835,2cyclictest0-21swapper/319:16:583
350861299380,4cyclictest3541107-21turbostat20:50:013
350861299380,4cyclictest3520157-21turbostat19:45:003
350861299380,4cyclictest3513530-21turbostat19:25:013
350861299380,4cyclictest3513530-21turbostat19:25:003
350860999380,36cyclictest0-21swapper/219:15:002
350860999380,35cyclictest0-21swapper/221:08:592
350861299370,36cyclictest0-21swapper/321:45:593
350860999370,35cyclictest0-21swapper/222:01:592
350860999370,2cyclictest0-21swapper/223:46:592
350860999370,2cyclictest0-21swapper/221:51:002
3508604993728,6cyclictest3587448-21kworker/u8:0+flush-179:023:30:160
3508612993634,1cyclictest0-21swapper/319:56:593
350861299360,35cyclictest0-21swapper/322:04:553
350861299360,35cyclictest0-21swapper/321:57:593
350861299360,35cyclictest0-21swapper/300:14:563
350861299360,35cyclictest0-21swapper/300:14:563
3508609993633,2cyclictest0-21swapper/223:06:002
3508609993633,2cyclictest0-21swapper/219:42:002
3508609993633,2cyclictest0-21swapper/200:23:592
3508609993632,2cyclictest0-21swapper/223:39:542
350860999360,34cyclictest0-21swapper/222:24:592
350860999360,1cyclictest0-21swapper/200:39:552
3508612993533,1cyclictest0-21swapper/323:12:593
3508612993533,1cyclictest0-21swapper/321:42:593
3508612993533,1cyclictest0-21swapper/300:26:003
3508612993532,2cyclictest0-21swapper/320:32:593
3508609993532,2cyclictest0-21swapper/221:40:592
3508609993532,2cyclictest0-21swapper/220:21:002
3508604993530,4cyclictest3572110-21kworker/u8:0+flush-179:022:55:180
3508612993432,1cyclictest0-21swapper/322:50:593
3508612993432,1cyclictest0-21swapper/320:18:593
3508612993431,2cyclictest0-21swapper/323:40:593
3508612993431,2cyclictest0-21swapper/322:15:593
3508612993431,2cyclictest0-21swapper/320:57:593
3508609993431,2cyclictest0-21swapper/200:06:592
3508609993330,2cyclictest0-21swapper/219:18:582
3508609993230,1cyclictest0-21swapper/221:14:592
3508609993229,2cyclictest0-21swapper/220:59:592
350860999320,29cyclictest0-21swapper/200:15:592
3508612993129,1cyclictest0-21swapper/321:20:003
3508612993128,2cyclictest0-21swapper/321:07:593
3508609993129,1cyclictest0-21swapper/219:29:592
3508609993128,2cyclictest0-21swapper/221:25:122
3508609993128,2cyclictest0-21swapper/219:54:002
350860999310,29cyclictest0-21swapper/223:10:122
3508612993027,2cyclictest0-21swapper/323:28:593
3508612993027,2cyclictest0-21swapper/323:28:593
350861299300,2cyclictest0-21swapper/300:35:123
350861299300,28cyclictest0-21swapper/322:20:123
350861299300,28cyclictest0-21swapper/321:20:153
3508609993027,2cyclictest0-21swapper/222:43:582
350860999300,2cyclictest0-21swapper/219:45:132
350860999300,2cyclictest0-21swapper/219:45:132
350860999300,28cyclictest0-21swapper/223:40:132
350860999300,28cyclictest0-21swapper/200:25:142
4577091290,7ptp4l441ktimers/321:35:003
4577091290,7ptp4l441ktimers/319:50:023
4577091290,7ptp4l441ktimers/319:50:013
3508612992927,1cyclictest0-21swapper/323:45:023
3508612992927,1cyclictest0-21swapper/320:05:133
3508612992926,2cyclictest0-21swapper/319:10:203
350861299290,28cyclictest0-21swapper/321:00:123
350861299290,27cyclictest0-21swapper/323:30:133
3508609992926,2cyclictest0-21swapper/223:50:122
3508609992926,2cyclictest0-21swapper/222:55:122
3508609992926,2cyclictest0-21swapper/222:05:122
3508609992926,2cyclictest0-21swapper/221:20:152
3508609992926,2cyclictest0-21swapper/220:25:152
3508609992926,2cyclictest0-21swapper/220:05:142
350860999290,27cyclictest0-21swapper/223:25:122
350860999290,27cyclictest0-21swapper/223:25:112
350860999290,27cyclictest0-21swapper/222:50:032
350860999290,27cyclictest0-21swapper/220:31:592
350860999290,27cyclictest0-21swapper/220:15:122
350860999290,27cyclictest0-21swapper/200:10:142
350860999290,27cyclictest0-21swapper/200:10:132
350860999290,21cyclictest0-21swapper/220:10:032
4577091280,7ptp4l441ktimers/320:40:013
4577091280,7ptp4l441ktimers/320:40:013
4577091280,7ptp4l441ktimers/300:10:003
4577091280,6ptp4l61490irq/134-eno1-TxRx-020:15:003
4577091280,6ptp4l441ktimers/320:05:023
4577091280,5ptp4l441ktimers/321:30:003
3508612992825,2cyclictest0-21swapper/323:15:593
3508612992825,2cyclictest0-21swapper/320:25:153
350861299280,26cyclictest0-21swapper/323:55:133
350861299280,26cyclictest0-21swapper/323:00:143
350861299280,26cyclictest0-21swapper/323:00:143
350861299280,26cyclictest0-21swapper/322:25:133
350861299280,26cyclictest0-21swapper/319:30:123
3508609992825,2cyclictest0-21swapper/223:31:592
3508609992825,2cyclictest0-21swapper/223:24:562
3508609992825,2cyclictest0-21swapper/220:40:112
350860999280,2cyclictest0-21swapper/221:45:022
350860999280,2cyclictest0-21swapper/221:00:592
350860999280,2cyclictest0-21swapper/219:59:552
350860999280,26cyclictest0-21swapper/223:00:142
350860999280,26cyclictest0-21swapper/223:00:142
350860999280,26cyclictest0-21swapper/219:30:122
4577091270,6ptp4l441ktimers/322:50:013
4577091270,6ptp4l441ktimers/322:34:563
4577091270,6ptp4l441ktimers/321:40:003
3508612992725,1cyclictest0-21swapper/320:54:593
3508612992725,1cyclictest0-21swapper/300:20:123
350861299270,26cyclictest0-21swapper/321:50:143
3508609992725,1cyclictest0-21swapper/221:59:582
3508609992724,2cyclictest0-21swapper/220:01:592
350860999270,1cyclictest0-21swapper/223:19:002
4577091260,6ptp4l61490irq/134-eno1-TxRx-023:24:553
4577091260,6ptp4l61490irq/134-eno1-TxRx-020:25:003
4577091260,6ptp4l61490irq/134-eno1-TxRx-000:05:003
4577091260,5ptp4l441ktimers/319:54:563
4577091260,4ptp4l61490irq/134-eno1-TxRx-023:40:013
4577091260,4ptp4l441ktimers/321:15:003
3508612992624,1cyclictest0-21swapper/322:55:133
3508612992621,4cyclictest3586458-21turbostat23:09:593
3508609992623,2cyclictest0-21swapper/222:10:592
350860999260,24cyclictest0-21swapper/222:17:592
350860999260,24cyclictest0-21swapper/219:21:002
350860999260,24cyclictest0-21swapper/219:20:592
350860999260,1cyclictest0-21swapper/222:50:002
4577091250,6ptp4l61490irq/134-eno1-TxRx-022:40:013
4577091250,6ptp4l61490irq/134-eno1-TxRx-022:40:003
3508609992523,1cyclictest0-21swapper/222:29:592
3508609992522,2cyclictest0-21swapper/222:40:012
3508609992522,2cyclictest0-21swapper/222:40:012
3508609992522,2cyclictest0-21swapper/221:38:592
4577091240,4ptp4l441ktimers/319:29:563
3508609992422,1cyclictest0-21swapper/223:59:592
3508609992321,1cyclictest0-21swapper/220:49:582
3508609992320,2cyclictest0-21swapper/220:35:112
3508609992320,2cyclictest0-21swapper/220:35:112
3508609992220,1cyclictest0-21swapper/219:40:002
3508609992219,2cyclictest0-21swapper/200:01:592
3508609992119,1cyclictest0-21swapper/220:55:002
3508608992012,3cyclictest171rcu_preempt19:10:011
3508609991411,2cyclictest0-21swapper/200:34:002
35086099975,1cyclictest0-21swapper/221:30:132
35086099970,2cyclictest0-21swapper/222:30:172
35086099930,2cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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