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2026-07-20 - 06:28
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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 792 highest latencies:
System rackeslot6.osadl.org (updated Mon Jul 20, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
380678999183171,8cyclictest3895536-21kworker/u8:3+events_unbound00:00:010
380678999143136,4cyclictest3895536-21kworker/u8:3+events_unbound00:25:010
380678999143136,4cyclictest3895536-21kworker/u8:3+events_unbound00:25:000
380679199138129,7cyclictest3837169-21latency_hist20:45:011
380678999138133,3cyclictest3873186-21kworker/u8:2+events_unbound23:00:000
380678999138132,4cyclictest3873186-21kworker/u8:2+events_unbound22:55:000
380678999138120,7cyclictest3880877-21kworker/u8:0+events_unbound23:00:250
380679199134122,9cyclictest510-21rs:main1
380678999134126,4cyclictest3852242-21kworker/u8:0+events_unbound21:40:240
380678999134123,8cyclictest3869777-21latency_hist22:25:010
380678999133126,5cyclictest3837202-21kworker/u8:3+flush-179:021:05:000
380678999131126,3cyclictest3828243-21kworker/u8:0+flush-179:020:20:210
380678999127121,5cyclictest3806625-21kworker/u8:0+events_unbound19:35:010
380678999127119,6cyclictest3885086-21kworker/u8:1+events_unbound23:25:000
380678999126115,8cyclictest3841963-21latency_hist21:00:010
380679199123112,8cyclictest3866579-21latency_hist22:15:011
380678999123117,5cyclictest3880877-21kworker/u8:0+events_unbound23:49:590
380678999123114,7cyclictest3895536-21kworker/u8:3+flush-179:000:00:230
380679199120112,5cyclictest3885086-21kworker/u8:1+events_unbound23:15:241
380678999120114,4cyclictest484-21dbus-daemon21:25:000
380678999120110,7cyclictest3903510-21latency_hist00:10:010
380678999119114,3cyclictest3809894-21kworker/u8:2+flush-179:019:55:220
380678999119108,8cyclictest3833957-21kworker/u8:1+flush-179:020:50:210
380678999118107,8cyclictest3809841-21latency_hist19:20:010
380678999117110,4cyclictest3908277-21kworker/u8:0+events_unbound00:30:170
380678999117107,7cyclictest3906699-21latency_hist00:20:020
380678999116111,4cyclictest3855166-21kworker/u8:1+flush-179:022:30:010
380678999116111,4cyclictest3855166-21kworker/u8:1+flush-179:022:30:010
380678999116108,5cyclictest3806625-21kworker/u8:0+events_unbound19:45:180
380678999115109,4cyclictest3855166-21kworker/u8:1+events_unbound22:10:260
380678999114108,4cyclictest3852242-21kworker/u8:0+flush-179:022:00:200
380678999114108,4cyclictest3852242-21kworker/u8:0+flush-179:022:00:190
380678999114107,4cyclictest3909863-21kworker/u8:1+events_unbound00:35:200
380678999113102,7cyclictest3855166-21kworker/u8:1+events_unbound22:35:190
380679199112102,7cyclictest3829211-21latency_hist20:20:021
380678999112107,4cyclictest3833957-21kworker/u8:1+events_unbound21:20:010
380678999112102,7cyclictest3824436-21latency_hist20:05:000
380679199111107,2cyclictest3855166-21kworker/u8:1+flush-179:021:50:161
380679199111102,6cyclictest3846964-21latency_hist21:15:011
380678999111106,3cyclictest3821230-21kworker/u8:3+flush-179:020:25:230
380678999111105,4cyclictest3885086-21kworker/u8:1+flush-179:023:15:210
380678999111102,7cyclictest3890455-21kworker/u8:2+events_unbound23:40:220
380678999110102,7cyclictest3809894-21kworker/u8:2+events_unbound19:30:000
380678999107101,4cyclictest3849616-21kworker/u8:2+events_unbound21:30:150
380679199106100,4cyclictest3809894-21kworker/u8:2+flush-179:020:10:251
38067899910696,7cyclictest3855166-21kworker/u8:1+events_unbound22:45:190
380678999106101,4cyclictest3822894-21kworker/u8:0+flush-179:020:05:220
38067899910599,4cyclictest3809894-21kworker/u8:2+events_unbound19:50:210
38067899910595,7cyclictest3837202-21kworker/u8:3+flush-179:021:10:220
38067899910499,4cyclictest3809894-21kworker/u8:2+flush-179:020:10:230
38067899910496,6cyclictest3903746-21kworker/u8:0+events_unbound00:10:260
38067919910397,4cyclictest3855166-21kworker/u8:1+flush-179:021:55:251
38067919910395,5cyclictest3882545-21kworker/u8:3+flush-179:023:05:171
38067899910396,4cyclictest3821230-21kworker/u8:3+events_unbound20:20:000
38067899910394,6cyclictest3873186-21kworker/u8:2+flush-179:022:40:200
38067899910387,12cyclictest1213033-21systemd-journal22:35:000
38067899910295,5cyclictest3855166-21kworker/u8:1+events_unbound21:45:250
38067899910294,4cyclictest3821230-21kworker/u8:3+events_unbound20:30:230
38067899910292,7cyclictest3808249-21latency_hist19:15:010
38067919910195,4cyclictest3861516-21kworker/u8:2+flush-179:022:20:251
38067899910194,4cyclictest3884095-21latency_hist23:10:010
38067919910090,7cyclictest3847201-21kworker/u8:0+flush-179:021:20:301
38067899910094,4cyclictest3809894-21kworker/u8:2+events_unbound19:35:250
3806789999992,4cyclictest3855166-21kworker/u8:1+events_unbound21:50:170
3806791999890,6cyclictest3809894-21kworker/u8:2+flush-179:020:30:171
3806791999889,6cyclictest3885086-21kworker/u8:1+flush-179:023:25:261
3806791999886,7cyclictest3837202-21kworker/u8:3+flush-179:020:55:221
3806791999883,10cyclictest3880877-21kworker/u8:0+flush-179:023:10:201
3806789999894,3cyclictest3849616-21kworker/u8:2+flush-179:021:25:250
3806789999892,4cyclictest3895536-21kworker/u8:3+events_unbound00:25:190
3806789999889,6cyclictest3855166-21kworker/u8:1+flush-179:021:55:240
3806789999790,4cyclictest3833957-21kworker/u8:1+events_unbound20:45:160
3806789999690,4cyclictest3880877-21kworker/u8:0+flush-179:023:35:150
3806791999585,8cyclictest3847220-21apt-get21:15:121
3806791999585,7cyclictest3852242-21kworker/u8:0+flush-179:022:00:151
3806791999585,7cyclictest3852242-21kworker/u8:0+flush-179:022:00:151
3806791999584,7cyclictest3809894-21kworker/u8:2+flush-179:019:50:011
3806789999587,5cyclictest3806625-21kworker/u8:0+events_unbound19:40:150
3806789999488,4cyclictest3849616-21kworker/u8:2+events_unbound21:35:160
3806789999483,8cyclictest1-21systemd22:20:010
3806789999288,3cyclictest3855166-21kworker/u8:1+events_unbound22:05:260
3806789999186,3cyclictest3880877-21kworker/u8:0+flush-179:023:50:210
3806791999083,5cyclictest3892306-21apt-get23:35:121
3806789999086,3cyclictest3833957-21kworker/u8:1+flush-179:020:40:260
3806789999084,4cyclictest3821230-21kworker/u8:3+events_unbound20:35:240
3806791998983,3cyclictest3852242-21kworker/u8:0+flush-179:021:35:271
3806791998980,6cyclictest3828243-21kworker/u8:0+flush-179:020:20:211
3806791998978,7cyclictest3837202-21kworker/u8:3+events_unbound21:00:011
3806791998975,10cyclictest3893625-21kworker/u8:1+flush-179:000:20:221
3806791998975,10cyclictest3893625-21kworker/u8:1+flush-179:000:20:221
3806789998883,3cyclictest3837202-21kworker/u8:3+flush-179:021:05:220
3806791998775,9cyclictest3851757-21apt-get21:30:001
3806791998678,6cyclictest3832386-21latency_hist20:30:001
3806791998378,2cyclictest3880877-21kworker/u8:0+events_unbound23:35:011
3806791998265,13cyclictest3880877-21kworker/u8:0+flush-179:023:00:221
3806789998273,4cyclictest3880877-21kworker/u8:0+events_unbound23:10:110
3806791998166,10cyclictest3873186-21kworker/u8:2+flush-179:022:40:001
3806791998076,2cyclictest3837202-21kworker/u8:3+events_unbound21:05:251
3806791998072,6cyclictest3809894-21kworker/u8:2+flush-179:019:30:231
3806791998065,8cyclictest3893625-21kworker/u8:1+flush-179:023:45:221
3806789998075,4cyclictest3885086-21kworker/u8:1+flush-179:023:25:270
3806791997969,8cyclictest3863665-21apt-get22:05:141
3806791997968,8cyclictest1213033-21systemd-journal00:40:011
3806791997871,5cyclictest3833957-21kworker/u8:1+flush-179:020:45:141
3806791997868,7cyclictest3895536-21kworker/u8:3+events_unbound00:25:141
3806791997666,8cyclictest1213033-21systemd-journal22:20:011
3806789997669,5cyclictest3809812-21kworker/u8:1+events_unbound19:20:200
3806791997568,4cyclictest3893625-21kworker/u8:1+flush-179:023:55:201
3806791997566,6cyclictest3871362-21latency_hist22:30:011
3806791997566,6cyclictest3871362-21latency_hist22:30:011
3806791997563,9cyclictest3809894-21kworker/u8:2+flush-179:020:00:011
3806791997367,4cyclictest3833957-21kworker/u8:1+flush-179:021:30:291
3806791997366,6cyclictest3895536-21kworker/u8:3+events_unbound00:00:251
3806791997366,5cyclictest3880877-21kworker/u8:0+events_unbound23:50:251
3806791997365,6cyclictest3833957-21kworker/u8:1+events_unbound20:50:151
3806791997265,5cyclictest3821230-21kworker/u8:3+flush-179:020:35:261
3806791997160,9cyclictest3823105-21apt-get20:00:111
3806791997059,8cyclictest3909863-21kworker/u8:1+flush-179:000:30:231
3806791996959,5cyclictest3855166-21kworker/u8:1+flush-179:022:50:231
3806791996860,6cyclictest3873186-21kworker/u8:2+events_unbound22:40:131
3806791996841,19cyclictest3893625-21kworker/u8:1+flush-179:000:05:261
3806791996654,9cyclictest1213033-21systemd-journal00:15:001
3806791996653,11cyclictest3855166-21kworker/u8:1+flush-179:021:45:151
3806791996558,4cyclictest3880877-21kworker/u8:0+flush-179:023:20:221
3806791996456,5cyclictest3855166-21kworker/u8:1+flush-179:022:45:221
3806795996360,2cyclictest0-21swapper/220:25:592
3806791996356,5cyclictest3809894-21kworker/u8:2+flush-179:019:45:001
3806791996253,7cyclictest3873186-21kworker/u8:2+events_unbound22:55:221
3806791996252,8cyclictest3852242-21kworker/u8:0+flush-179:021:40:211
3806796996159,1cyclictest0-21swapper/320:25:593
3806791996153,5cyclictest3806638-21latency_hist19:10:021
3806789996152,6cyclictest3890455-21kworker/u8:2+events_unbound23:30:130
3806791996053,5cyclictest3809894-21kworker/u8:2+flush-179:019:25:261
3806791995950,7cyclictest3809812-21kworker/u8:1+flush-179:019:20:251
3806791995549,4cyclictest3809894-21kworker/u8:2+flush-179:019:50:251
3806791995448,4cyclictest3895536-21kworker/u8:3+events_unbound00:15:171
3806791995447,5cyclictest3807323-21kworker/u8:4+flush-179:019:10:251
3806791995348,3cyclictest3807323-21kworker/u8:4+events_unbound19:15:161
3806796995148,2cyclictest0-21swapper/320:14:593
3806795995148,1cyclictest0-21swapper/220:15:002
3806791995147,3cyclictest3855166-21kworker/u8:1+flush-179:022:30:271
4577091500,14ptp4l61490irq/134-eno1-TxRx-019:09:553
380679599450,2cyclictest0-21swapper/221:11:592
3806791994437,5cyclictest3822894-21kworker/u8:0+flush-179:020:05:261
3806791994436,6cyclictest3890455-21kworker/u8:2+events_unbound23:40:231
380679599430,1cyclictest0-21swapper/221:32:592
380679699420,1cyclictest0-21swapper/321:12:003
380679699400,38cyclictest0-21swapper/319:28:593
380679699400,1cyclictest0-21swapper/300:09:553
380679699390,37cyclictest0-21swapper/320:19:553
380679599390,36cyclictest0-21swapper/219:29:002
380679699380,1cyclictest0-21swapper/323:49:543
380679699380,1cyclictest0-21swapper/323:14:553
3806795993834,2cyclictest0-21swapper/221:26:592
380679599380,36cyclictest0-21swapper/222:26:592
380679599380,36cyclictest0-21swapper/222:26:592
380679599380,35cyclictest0-21swapper/220:19:552
3806795993733,2cyclictest0-21swapper/223:13:592
3806795993733,2cyclictest0-21swapper/223:08:592
380679599370,2cyclictest0-21swapper/223:49:552
380679599370,2cyclictest0-21swapper/223:38:592
380679599370,2cyclictest0-21swapper/200:09:552
3806796993634,1cyclictest0-21swapper/321:27:003
380679699360,35cyclictest0-21swapper/322:26:593
380679699360,35cyclictest0-21swapper/322:26:593
3806795993633,2cyclictest0-21swapper/219:51:592
4577091350,6ptp4l441ktimers/323:05:003
3806796993532,2cyclictest0-21swapper/321:06:583
3806795993531,2cyclictest0-21swapper/221:37:582
3806795993531,2cyclictest0-21swapper/221:06:582
3806795993531,2cyclictest0-21swapper/219:45:002
3806795993530,2cyclictest0-21swapper/219:55:592
380679599350,1cyclictest0-21swapper/221:02:002
3806796993432,1cyclictest0-21swapper/323:08:593
3806796993432,1cyclictest0-21swapper/319:51:593
3806796993432,1cyclictest0-21swapper/319:44:593
3806795993429,2cyclictest0-21swapper/220:41:592
3806796993331,1cyclictest0-21swapper/323:16:593
3806796993330,2cyclictest0-21swapper/321:37:583
3806796993330,2cyclictest0-21swapper/320:44:563
3806795993330,2cyclictest0-21swapper/223:16:592
3806795993330,2cyclictest0-21swapper/200:16:592
3806795993328,2cyclictest0-21swapper/220:33:002
231999330,21rtkit-daemon3806437-21cat19:05:320
3806796993230,1cyclictest0-21swapper/300:16:593
3806796993230,1cyclictest0-21swapper/300:12:003
3806796993229,2cyclictest0-21swapper/320:32:593
3806796993225,6cyclictest3895505-21turbostat23:45:003
3806796993224,5cyclictest3824447-21turbostat20:04:593
3806795993229,2cyclictest0-21swapper/222:43:592
3806795993229,2cyclictest0-21swapper/200:12:002
380679599320,30cyclictest0-21swapper/223:00:142
380679599320,2cyclictest0-21swapper/223:50:112
3806796993129,1cyclictest0-21swapper/322:43:593
3806796993129,1cyclictest0-21swapper/319:55:583
380679599310,29cyclictest0-21swapper/219:11:592
3806796993028,1cyclictest0-21swapper/319:10:123
3806796993027,2cyclictest0-21swapper/323:50:123
3806796993027,2cyclictest0-21swapper/300:00:143
3806796993026,3cyclictest0-21swapper/320:45:113
380679699300,28cyclictest0-21swapper/321:00:023
380679699300,27cyclictest0-21swapper/300:30:133
3806795993027,2cyclictest0-21swapper/220:49:002
3806795993026,2cyclictest0-21swapper/219:18:582
380679599300,28cyclictest0-21swapper/222:35:132
380679599300,28cyclictest0-21swapper/222:20:132
380679599300,28cyclictest0-21swapper/222:00:012
380679599300,28cyclictest0-21swapper/221:40:122
380679599300,27cyclictest0-21swapper/222:06:592
380679599300,27cyclictest0-21swapper/200:00:142
4577091290,7ptp4l441ktimers/321:25:003
3806796992926,2cyclictest0-21swapper/323:40:023
3806796992926,2cyclictest0-21swapper/319:15:143
380679699290,28cyclictest0-21swapper/323:29:593
380679699290,28cyclictest0-21swapper/322:35:133
380679699290,28cyclictest0-21swapper/320:35:143
380679699290,28cyclictest0-21swapper/319:45:113
380679699290,27cyclictest0-21swapper/322:20:133
380679699290,27cyclictest0-21swapper/322:00:013
3806795992926,2cyclictest0-21swapper/223:40:132
3806795992926,2cyclictest0-21swapper/221:45:122
3806795992926,2cyclictest0-21swapper/220:35:132
380679599290,2cyclictest0-21swapper/219:45:102
380679599290,27cyclictest0-21swapper/200:30:142
4577091280,6ptp4l441ktimers/323:35:013
4577091280,6ptp4l441ktimers/323:00:003
4577091280,6ptp4l441ktimers/322:20:003
3806796992825,2cyclictest0-21swapper/322:50:133
3806796992825,2cyclictest0-21swapper/321:45:123
380679699280,26cyclictest0-21swapper/321:40:123
3806795992825,2cyclictest0-21swapper/222:50:132
3806795992825,1cyclictest0-21swapper/221:54:582
380679599280,26cyclictest0-21swapper/223:29:592
380679599280,26cyclictest0-21swapper/220:00:112
380679599280,26cyclictest0-21swapper/219:20:592
380679599280,1cyclictest0-21swapper/221:20:152
45782912723,2phc2sys0-21swapper/300:35:123
3806796992725,1cyclictest0-21swapper/321:54:583
380679699270,26cyclictest0-21swapper/322:06:593
380679699270,26cyclictest0-21swapper/321:19:553
3806795992724,2cyclictest0-21swapper/221:16:002
3806795992723,2cyclictest0-21swapper/223:22:592
3806795992723,2cyclictest0-21swapper/222:59:592
380679599270,2cyclictest0-21swapper/200:20:132
380679599270,2cyclictest0-21swapper/200:20:122
380679599270,25cyclictest0-21swapper/222:02:002
380679599270,25cyclictest0-21swapper/222:01:592
4577091260,6ptp4l441ktimers/322:35:003
4577091260,5ptp4l441ktimers/322:05:023
4577091260,5ptp4l441ktimers/322:05:013
4577091260,5ptp4l441ktimers/300:00:013
4577091260,4ptp4l441ktimers/319:40:013
3806796992624,1cyclictest0-21swapper/319:32:003
3806796992623,2cyclictest0-21swapper/323:23:593
380679699260,25cyclictest0-21swapper/321:00:003
380679699260,24cyclictest0-21swapper/319:20:593
3806795992623,2cyclictest0-21swapper/222:46:592
3806795992623,2cyclictest0-21swapper/219:31:592
3806795992622,2cyclictest0-21swapper/222:31:592
3806795992622,2cyclictest0-21swapper/222:13:592
3806795992622,2cyclictest0-21swapper/220:57:592
3806795992622,2cyclictest0-21swapper/219:37:592
4577091250,6ptp4l441ktimers/300:25:013
4577091250,6ptp4l441ktimers/300:25:003
4577091250,5ptp4l61490irq/134-eno1-TxRx-020:55:003
4577091250,5ptp4l61490irq/134-eno1-TxRx-000:30:003
4577091250,3ptp4l441ktimers/321:35:013
3806796992523,1cyclictest0-21swapper/322:46:593
3806796992523,1cyclictest0-21swapper/322:15:003
4577091240,4ptp4l441ktimers/320:10:003
4577091240,3ptp4l61490irq/134-eno1-TxRx-020:24:563
3806795992219,2cyclictest0-21swapper/220:07:582
3806795992017,2cyclictest0-21swapper/222:15:142
3806795991512,2cyclictest0-21swapper/223:30:132
3806795991411,2cyclictest0-21swapper/220:53:582
3806795991311,1cyclictest0-21swapper/220:24:582
3806795991310,2cyclictest0-21swapper/200:37:582
380679599129,2cyclictest0-21swapper/200:26:002
3806795991210,1cyclictest0-21swapper/200:00:012
38067959930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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