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2026-07-17 - 13:14
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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 Fri Jul 17, 2026 00:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
407102799135129,4cyclictest4075929-21kworker/u8:0+events_unbound19:40:251
407102799131123,5cyclictest4087090-21latency_hist20:00:021
407102799131120,8cyclictest4128726-21latency_hist22:10:011
407102799125117,6cyclictest4114197-21kworker/u8:0+events_unbound21:30:021
407102799124118,4cyclictest4142022-21kworker/u8:3+events_unbound23:25:251
407102799124111,10cyclictest1213033-21systemd-journal22:20:011
407102799124111,10cyclictest1213033-21systemd-journal22:20:001
407102799121113,5cyclictest4110954-21latency_hist21:15:001
407102799120116,3cyclictest4136604-21kworker/u8:1+flush-179:022:40:261
407102799120113,5cyclictest4174527-21kworker/u8:3+flush-179:000:30:241
407102799120113,5cyclictest4173340-21kworker/u8:1+events_unbound00:30:001
407102599118108,7cyclictest4141978-21latency_hist22:50:010
407102599118108,7cyclictest4141978-21latency_hist22:50:010
407102599115107,5cyclictest4136604-21kworker/u8:1+flush-179:022:30:240
407102799114108,5cyclictest4093512-21kworker/u8:3+events_unbound20:35:251
407102799114106,5cyclictest4096675-21kworker/u8:2+events_unbound20:40:241
407102799114102,8cyclictest4070925-21kworker/u8:2+events_unbound19:10:201
407102799114102,8cyclictest4070925-21kworker/u8:2+events_unbound19:10:201
407102599114106,5cyclictest4075929-21kworker/u8:0+flush-179:019:40:020
407102599113105,5cyclictest4093512-21kworker/u8:3+flush-179:020:55:160
407102799112104,6cyclictest4093512-21kworker/u8:3+events_unbound21:40:211
40710259911298,12cyclictest1213033-21systemd-journal19:20:000
407102799111102,6cyclictest4131977-21kworker/u8:3+flush-179:022:25:221
407102799111102,6cyclictest4070925-21kworker/u8:2+events_unbound19:20:191
407102799111100,8cyclictest4145167-21latency_hist23:00:011
40710259911197,11cyclictest1213033-21systemd-journal00:30:010
40710279911098,8cyclictest4079111-21kworker/u8:3+events_unbound19:35:141
407102799110103,5cyclictest4142022-21kworker/u8:3+events_unbound23:20:231
407102799110103,4cyclictest4075929-21kworker/u8:0+flush-179:019:45:231
407102599110100,6cyclictest4123945-21latency_hist21:55:010
40710279910996,6cyclictest4093512-21kworker/u8:3+flush-179:021:00:241
407102799109103,4cyclictest4088659-21kworker/u8:0+events_unbound20:05:261
40710279910896,6cyclictest4070866-21kworker/u8:1+events_unbound19:30:021
407102799108102,5cyclictest4106242-21kworker/u8:1+flush-179:021:35:261
407102799107101,4cyclictest4121882-21kworker/u8:2+events_unbound22:00:231
40710279910699,5cyclictest4121882-21kworker/u8:2+events_unbound21:55:011
40710279910598,5cyclictest4088659-21kworker/u8:0+flush-179:020:20:251
40710279910596,6cyclictest4132436-21apt-get22:20:111
40710279910590,5cyclictest4088659-21kworker/u8:0+events_unbound20:10:191
40710279910499,3cyclictest4161321-21kworker/u8:3+events_unbound00:00:181
407102799104100,3cyclictest4082303-21kworker/u8:1+events_unbound20:00:161
40710259910498,4cyclictest4164773-40logrotate00:00:010
40710279910292,7cyclictest4121882-21kworker/u8:2+flush-179:022:15:001
40710259910296,4cyclictest4154948-21kworker/u8:0+events_unbound23:45:010
40710279910196,4cyclictest4163172-21kworker/u8:0+flush-179:023:55:251
40710259910194,4cyclictest4173340-21kworker/u8:1+flush-179:000:25:250
40710279910095,4cyclictest4169842-21kworker/u8:2+events_unbound00:35:251
40710279910095,4cyclictest4169842-21kworker/u8:2+events_unbound00:35:251
40710279910091,7cyclictest4106242-21kworker/u8:1+events_unbound21:25:141
40710279910089,7cyclictest4103005-21latency_hist20:50:021
40710279910088,5cyclictest4093439-21kworker/u8:1+events_unbound20:25:191
4071025999993,4cyclictest4154948-21kworker/u8:0+flush-179:023:35:010
4071025999987,9cyclictest4141962-21kworker/u8:2+flush-179:022:55:220
4071027999892,4cyclictest4093512-21kworker/u8:3+flush-179:021:05:251
4071027999886,10cyclictest4168064-21kworker/u8:0+events_unbound00:10:211
4071025999889,6cyclictest4127122-21kworker/u8:1+flush-179:022:20:230
4071025999687,6cyclictest4114197-21kworker/u8:0+flush-179:021:35:220
4071025999681,13cyclictest4169861-21apt-get00:15:120
4071027999590,3cyclictest4141962-21kworker/u8:2+flush-179:023:05:151
4071027999587,6cyclictest4075948-21apt-get19:25:111
4071025999585,7cyclictest4075929-21kworker/u8:0+flush-179:019:40:210
4071025999578,13cyclictest1213033-21systemd-journal22:05:000
4071027999487,5cyclictest4084941-21kworker/u8:2+events_unbound19:50:241
4071027999389,3cyclictest4093512-21kworker/u8:3+flush-179:020:55:201
4071027999388,3cyclictest4121614-21kworker/u8:1+events_unbound21:45:231
4071025999384,6cyclictest4096675-21kworker/u8:2+flush-179:020:50:230
4071025999382,9cyclictest4165067-21apt-get00:00:130
4071027999287,4cyclictest4114197-21kworker/u8:0+events_unbound21:55:231
4071027999287,4cyclictest4114197-21kworker/u8:0+events_unbound21:55:221
4071025999182,6cyclictest4130311-21latency_hist22:15:020
4071027999083,5cyclictest4096675-21kworker/u8:2+events_unbound20:30:271
4071027998981,5cyclictest4161321-21kworker/u8:3+events_unbound23:50:011
4071027998980,6cyclictest4142022-21kworker/u8:3+events_unbound23:10:181
4071027998980,6cyclictest4142022-21kworker/u8:3+events_unbound23:10:181
4071025998973,12cyclictest1213033-21systemd-journal22:40:000
4071027998882,4cyclictest4161321-21kworker/u8:3+flush-179:000:05:151
4071025998880,6cyclictest4142519-21diskstats22:50:170
4071025998877,8cyclictest4106242-21kworker/u8:1+flush-179:021:15:220
4071027998782,4cyclictest4141962-21kworker/u8:2+events_unbound23:00:231
4071027998774,5cyclictest4154949-21kworker/u8:2+events_unbound23:50:151
4071027998478,4cyclictest4142022-21kworker/u8:3+events_unbound22:50:231
4071027998477,5cyclictest4104591-21latency_hist20:55:011
4071025998471,10cyclictest1213033-21systemd-journal23:20:000
4071027998378,4cyclictest4136604-21kworker/u8:1+events_unbound22:35:141
4071027998378,3cyclictest4148578-21kworker/u8:0+events_unbound23:15:191
4071025998371,8cyclictest4093512-21kworker/u8:3+flush-179:020:50:000
4071025998175,4cyclictest4168064-21kworker/u8:0+flush-179:000:20:150
4071025998173,5cyclictest4093512-21kworker/u8:3+flush-179:021:00:150
4071025998171,6cyclictest4142022-21kworker/u8:3+flush-179:023:10:170
4071025998171,6cyclictest4142022-21kworker/u8:3+flush-179:023:10:170
4071027998076,3cyclictest4154948-21kworker/u8:0+events_unbound23:30:281
4071027997974,4cyclictest4169842-21kworker/u8:2+events_unbound00:15:271
4071025997970,5cyclictest4082303-21kworker/u8:1+flush-179:020:00:130
4071025997872,3cyclictest4075929-21kworker/u8:0+flush-179:019:45:240
4071025997865,10cyclictest4119730-21diskstats21:40:150
4071027997670,4cyclictest4168064-21kworker/u8:0+flush-179:000:20:201
4071025997669,5cyclictest4159504-21apt-get23:45:030
4071025997668,6cyclictest4072498-21latency_hist19:15:020
4071025997668,6cyclictest4072498-21latency_hist19:15:010
4071027997571,3cyclictest4154948-21kworker/u8:0+flush-179:023:40:261
4071027997570,4cyclictest4093512-21kworker/u8:3+events_unbound21:20:221
4071025997557,13cyclictest1213033-21systemd-journal20:15:000
4071027997469,4cyclictest4136604-21kworker/u8:1+flush-179:022:30:251
4071025997469,3cyclictest4084941-21kworker/u8:2+events_unbound20:15:270
4071027997362,4cyclictest4084941-21kworker/u8:2+events_unbound20:15:191
4071025997366,5cyclictest4142022-21kworker/u8:3+flush-179:023:25:280
4071025997163,6cyclictest4156554-21apt-get23:35:120
4071025997157,9cyclictest4075929-21kworker/u8:0+flush-179:019:50:150
4071025997060,7cyclictest4161321-21kworker/u8:3+flush-179:023:55:010
4071025997060,7cyclictest4070925-21kworker/u8:2+flush-179:019:25:200
4071027996964,4cyclictest4070866-21kworker/u8:1+flush-179:019:15:271
4071025996956,10cyclictest1213033-21systemd-journal22:45:010
4071025996861,5cyclictest4142022-21kworker/u8:3+flush-179:023:20:250
4071025996858,7cyclictest4093512-21kworker/u8:3+flush-179:021:20:210
4071025996660,5cyclictest4082303-21kworker/u8:1+flush-179:019:55:230
4071025996560,3cyclictest4084941-21kworker/u8:2+flush-179:020:09:290
4071025996552,10cyclictest4088659-21kworker/u8:0+events_unbound20:29:590
4071025996550,11cyclictest4070866-21kworker/u8:1+events_unbound19:30:140
4071027996459,4cyclictest4106242-21kworker/u8:1+flush-179:021:15:191
4071025996458,4cyclictest4104583-21kworker/u8:0+flush-179:021:05:170
4071025996457,4cyclictest4168064-21kworker/u8:0+events_unbound00:10:150
4071025996456,5cyclictest4110357-21ntp_192.168.11421:10:200
4071025996455,7cyclictest4114197-21kworker/u8:0+events_unbound21:55:150
4071025996455,7cyclictest4114197-21kworker/u8:0+events_unbound21:55:140
4071025996256,4cyclictest4114197-21kworker/u8:0+flush-179:021:30:360
4071025996255,5cyclictest4177840-21latency_hist00:40:020
4071025996255,5cyclictest4177840-21latency_hist00:40:020
4071025996254,5cyclictest4070925-21kworker/u8:2+flush-179:019:20:110
4071025996154,5cyclictest4114197-21kworker/u8:0+events_unbound21:45:250
4071025996151,8cyclictest4131977-21kworker/u8:3+events_unbound22:25:210
4071025996150,9cyclictest4145426-21apt-get23:00:120
4071025996050,7cyclictest4161321-21kworker/u8:3+events_unbound00:05:270
4071025995648,6cyclictest4127122-21kworker/u8:1+events_unbound22:15:220
4071025995648,6cyclictest4127122-21kworker/u8:1+events_unbound22:15:220
4071025995447,5cyclictest4141962-21kworker/u8:2+flush-179:023:05:260
4071025995446,6cyclictest4101418-21latency_hist20:45:020
4071025995444,7cyclictest4093512-21kworker/u8:3+events_unbound21:30:010
4071025995344,6cyclictest4088659-21kworker/u8:0+flush-179:020:20:120
4071027995247,4cyclictest4154948-21kworker/u8:0+events_unbound23:36:311
4071025995250,1cyclictest4096675-21kworker/u8:2+flush-179:020:30:160
4071027995146,4cyclictest4136604-21kworker/u8:1+events_unbound22:47:441
4071027995146,4cyclictest4136604-21kworker/u8:1+events_unbound22:47:431
4577091490,13ptp4l61490irq/134-eno1-TxRx-019:10:013
4071025994737,8cyclictest4093512-21kworker/u8:3+flush-179:020:35:210
4071025994434,8cyclictest4127122-21kworker/u8:1+flush-179:022:05:160
4071031994341,1cyclictest0-21swapper/323:12:593
4071031994341,1cyclictest0-21swapper/323:12:593
4071031994340,2cyclictest0-21swapper/321:18:583
4071031994340,2cyclictest0-21swapper/319:51:593
407103099430,41cyclictest0-21swapper/223:46:592
4071031994240,1cyclictest0-21swapper/300:33:003
4071031994139,1cyclictest0-21swapper/320:43:003
4071030994138,2cyclictest0-21swapper/200:31:582
4071027994032,6cyclictest4070884-21latency_hist19:10:011
4071031993934,4cyclictest4169623-21turbostat00:15:013
4071025993931,5cyclictest4066109-21kworker/u8:3+events_unbound19:10:020
4071030993834,2cyclictest0-21swapper/221:37:592
407103099380,35cyclictest0-21swapper/223:23:592
407103099380,35cyclictest0-21swapper/221:53:592
4071031993734,2cyclictest0-21swapper/323:56:593
407103099370,29cyclictest0-21swapper/220:26:002
4071031993634,1cyclictest0-21swapper/319:22:593
4071031993633,2cyclictest0-21swapper/320:50:593
407103199360,35cyclictest0-21swapper/300:25:583
407103199360,35cyclictest0-21swapper/300:24:553
4071030993633,2cyclictest0-21swapper/221:27:592
4071030993633,2cyclictest0-21swapper/221:09:592
4071031993533,1cyclictest0-21swapper/323:16:593
4071031993533,1cyclictest0-21swapper/323:09:593
4071031993533,1cyclictest0-21swapper/319:45:593
4071031993532,2cyclictest0-21swapper/323:29:593
407103199350,34cyclictest0-21swapper/322:16:583
407103199350,34cyclictest0-21swapper/322:16:583
407103199350,1cyclictest0-21swapper/320:28:583
4071030993532,2cyclictest0-21swapper/222:20:002
4071030993532,2cyclictest0-21swapper/222:19:592
4071030993532,2cyclictest0-21swapper/219:31:592
407103099350,1cyclictest0-21swapper/223:44:542
407103099350,1cyclictest0-21swapper/219:59:592
4071031993432,1cyclictest0-21swapper/320:57:003
4071031993432,1cyclictest0-21swapper/320:19:593
4071031993428,4cyclictest4120793-21sleep21:45:013
4071030993431,2cyclictest0-21swapper/223:38:592
4071030993431,2cyclictest0-21swapper/200:23:592
4071030993431,2cyclictest0-21swapper/200:00:592
4071030993331,1cyclictest0-21swapper/223:34:592
4071030993330,2cyclictest0-21swapper/221:04:592
4071030993330,2cyclictest0-21swapper/220:32:592
4071030993330,2cyclictest0-21swapper/219:39:002
4071031993230,1cyclictest0-21swapper/321:13:003
4071030993230,1cyclictest0-21swapper/222:24:592
4071030993229,2cyclictest0-21swapper/223:12:592
4071030993229,2cyclictest0-21swapper/223:12:592
4071030993228,2cyclictest0-21swapper/220:10:002
4071031993130,1cyclictest0-21swapper/323:50:593
4071031993129,1cyclictest0-21swapper/322:47:583
4071031993129,1cyclictest0-21swapper/322:47:583
4071031993129,1cyclictest0-21swapper/322:00:003
4071031993129,1cyclictest0-21swapper/321:59:593
4071031993129,1cyclictest0-21swapper/320:38:003
4071030993129,1cyclictest0-21swapper/221:49:592
4071030993127,2cyclictest0-21swapper/222:13:592
4071030993127,2cyclictest0-21swapper/200:30:012
407103099310,2cyclictest0-21swapper/222:41:592
407103099310,29cyclictest0-21swapper/200:10:592
4577091300,7ptp4l441ktimers/321:05:003
4071031993027,2cyclictest0-21swapper/321:50:593
4071031993027,2cyclictest0-21swapper/321:45:143
4071030993027,2cyclictest0-21swapper/223:25:142
4071030993027,2cyclictest0-21swapper/222:50:142
4071030993027,2cyclictest0-21swapper/222:04:562
4071030993027,2cyclictest0-21swapper/221:30:032
4071030993027,2cyclictest0-21swapper/220:56:002
4071030993027,2cyclictest0-21swapper/220:35:132
4071030993026,2cyclictest0-21swapper/222:25:032
4071031992927,1cyclictest0-21swapper/323:20:593
407103199290,28cyclictest0-21swapper/322:58:593
407103199290,27cyclictest0-21swapper/321:30:023
4071030992926,2cyclictest0-21swapper/223:50:032
4071030992926,2cyclictest0-21swapper/222:37:592
4071030992926,2cyclictest0-21swapper/220:40:132
407103099290,27cyclictest0-21swapper/223:00:142
407103099290,27cyclictest0-21swapper/222:05:132
407103099290,26cyclictest0-21swapper/221:22:592
4577091280,7ptp4l441ktimers/322:45:013
4577091280,7ptp4l441ktimers/322:40:003
4577091280,6ptp4l441ktimers/321:25:003
4577091280,6ptp4l441ktimers/320:35:003
4577091280,6ptp4l441ktimers/319:44:593
4577091280,5ptp4l441ktimers/319:40:013
4071031992825,2cyclictest0-21swapper/323:38:003
407103199280,27cyclictest0-21swapper/322:30:123
407103199280,27cyclictest0-21swapper/322:20:133
407103199280,27cyclictest0-21swapper/321:30:013
407103199280,26cyclictest0-21swapper/323:45:023
407103199280,26cyclictest0-21swapper/322:50:153
407103199280,26cyclictest0-21swapper/322:25:023
407103199280,26cyclictest0-21swapper/322:10:133
407103199280,26cyclictest0-21swapper/322:05:133
407103199280,26cyclictest0-21swapper/320:10:123
407103199280,26cyclictest0-21swapper/320:00:133
407103199280,26cyclictest0-21swapper/319:30:033
4071030992825,2cyclictest0-21swapper/219:51:592
4071030992825,2cyclictest0-21swapper/219:16:592
407103099280,2cyclictest0-21swapper/219:20:112
407103099280,26cyclictest0-21swapper/221:16:592
407103099280,26cyclictest0-21swapper/220:17:582
407103099280,26cyclictest0-21swapper/220:00:122
407103099280,26cyclictest0-21swapper/200:35:592
407103099280,26cyclictest0-21swapper/200:35:592
4577091270,5ptp4l61490irq/134-eno1-TxRx-019:20:003
4071031992725,1cyclictest4577091ptp4l22:00:163
4071031992724,2cyclictest0-21swapper/319:56:593
4071031992724,1cyclictest0-21swapper/321:35:593
407103199270,26cyclictest0-21swapper/323:30:133
407103199270,26cyclictest0-21swapper/319:13:593
407103199270,26cyclictest0-21swapper/319:13:583
407103199270,1cyclictest0-21swapper/300:00:023
4071030992724,2cyclictest0-21swapper/220:24:562
4071030992724,2cyclictest0-21swapper/200:05:162
4577091260,6ptp4l441ktimers/320:49:563
4577091260,5ptp4l441ktimers/321:09:553
4577091260,5ptp4l441ktimers/320:25:023
4071030992623,2cyclictest0-21swapper/219:46:582
407103099260,24cyclictest0-21swapper/221:58:592
407103099260,24cyclictest0-21swapper/221:58:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-000:19:563
4577091250,5ptp4l441ktimers/323:44:553
4577091250,5ptp4l441ktimers/323:05:013
4577091250,4ptp4l441ktimers/319:29:563
407103199250,1cyclictest0-21swapper/320:07:003
407103199240,1cyclictest0-21swapper/300:39:563
407103199240,1cyclictest0-21swapper/300:39:563
407103199240,1cyclictest0-21swapper/300:06:593
4071030992421,2cyclictest0-21swapper/222:46:002
4071030992421,2cyclictest0-21swapper/222:45:592
4071030992421,2cyclictest0-21swapper/222:31:592
4071030992220,1cyclictest0-21swapper/200:19:592
4071030992219,2cyclictest0-21swapper/221:44:592
4071030992219,2cyclictest0-21swapper/221:10:102
4071030992119,1cyclictest0-21swapper/223:19:592
4071030992118,2cyclictest0-21swapper/220:46:592
4071030991614,1cyclictest0-21swapper/219:26:002
4071030991613,2cyclictest0-21swapper/220:53:592
4071030991512,2cyclictest0-21swapper/219:11:002
4071030991512,2cyclictest0-21swapper/219:10:592
4071030991411,2cyclictest0-21swapper/220:13:592
4071030991411,2cyclictest0-21swapper/219:42:002
40710309985,2cyclictest0-21swapper/223:55:512
40710309974,2cyclictest0-21swapper/223:07:352
40710309974,2cyclictest0-21swapper/222:58:292
40710309931,1cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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