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2026-11-15 - 04:03
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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 Sun Nov 15, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
75610299187174,10cyclictest849971-40gzip00:00:011
756099991771,172cyclictest1-21systemd00:00:010
75609999147134,10cyclictest836415-21apt-get23:20:000
75610299146134,9cyclictest829782-21latency_hist23:00:001
75610299143133,7cyclictest823400-21latency_hist22:40:011
75609999141130,8cyclictest771900-21latency_hist20:00:010
75609999138128,3cyclictest771879-21kworker/u8:1+events_unbound20:10:240
75609999136131,4cyclictest848039-21kworker/u8:2+events_unbound00:04:020
75609999135124,4cyclictest721677-21kworker/u8:0+events_unbound19:25:270
75609999133123,3cyclictest794688-21kworker/u8:0+events_unbound22:10:240
75610299132114,16cyclictest1213033-21systemd-journal23:20:001
75609999132114,9cyclictest1213033-21systemd-journal21:05:000
75609999131126,4cyclictest857923-21kworker/u8:1+events_unbound00:25:250
75610299130118,8cyclictest781453-21latency_hist20:30:011
75609999130116,10cyclictest1213033-21systemd-journal23:25:010
75609999128122,4cyclictest857923-21kworker/u8:1+events_unbound00:30:210
75609999126116,4cyclictest812198-21kworker/u8:2+events_unbound22:05:250
75609999122115,5cyclictest848175-21gpgv23:55:010
75609999120115,4cyclictest778326-21kworker/u8:2+events_unbound20:25:250
75610299119110,7cyclictest834778-21kworker/u8:2+flush-179:023:40:001
75610299119110,6cyclictest828175-21latency_hist22:55:011
75610299118110,6cyclictest861246-21gpgv00:35:011
75610299117111,4cyclictest789804-21kworker/u8:0+events_unbound21:00:141
75609999116111,3cyclictest778326-21kworker/u8:2+flush-179:020:55:000
7561029911098,10cyclictest756243-21apt-get19:10:121
75609999110104,4cyclictest830278-21kworker/u8:1+events_unbound23:10:210
75609999110101,6cyclictest856339-21latency_hist00:20:000
7560999910897,8cyclictest781998-21diskstats20:30:140
7561029910798,6cyclictest841414-21kworker/u8:0+flush-179:023:45:211
7561029910499,4cyclictest721677-21kworker/u8:0+events_unbound20:05:281
7560999910496,6cyclictest786528-21kworker/u8:3+events_unbound21:05:230
7560999910398,3cyclictest794688-21kworker/u8:0+events_unbound21:40:110
7560999910397,4cyclictest786470-21kworker/u8:1+events_unbound20:45:210
756099991031,98cyclictest1-21systemd23:39:590
7560999910291,9cyclictest834778-21kworker/u8:2+events_unbound23:35:000
7561029910090,8cyclictest771879-21kworker/u8:1+flush-179:020:15:211
7561029910077,21cyclictest721677-21kworker/u8:0+flush-179:019:20:001
756102999995,3cyclictest721677-21kworker/u8:0+events_unbound19:35:241
756102999994,4cyclictest818676-21kworker/u8:1+flush-179:022:30:271
756099999994,4cyclictest739428-21kworker/u8:3+events_unbound19:14:560
756102999894,3cyclictest834778-21kworker/u8:2+events_unbound23:20:191
756102999890,6cyclictest786528-21kworker/u8:3+events_unbound21:35:011
756099999893,4cyclictest857923-21kworker/u8:1+flush-179:000:39:590
756102999688,6cyclictest772170-21apt-get20:00:121
756099999691,4cyclictest821855-21kworker/u8:3+events_unbound22:55:250
756102999590,4cyclictest778326-21kworker/u8:2+flush-179:020:40:261
756102999489,4cyclictest848039-21kworker/u8:2+events_unbound00:04:111
756102999489,4cyclictest768698-21kworker/u8:3+events_unbound19:49:561
756102999385,5cyclictest857938-21latency_hist00:25:011
756102999376,15cyclictest1213033-21systemd-journal23:10:201
756099999388,4cyclictest801120-21kworker/u8:2+events_unbound21:45:240
756102999279,11cyclictest1213033-21systemd-journal00:10:011
756099999186,3cyclictest771879-21kworker/u8:1+events_unbound20:05:130
756099999181,4cyclictest760804-21kworker/u8:2+events_unbound19:44:560
756099999085,4cyclictest823870-21kworker/u8:0+events_unbound22:49:560
756099999082,3cyclictest818676-21kworker/u8:1+events_unbound22:30:230
756099998984,4cyclictest821855-21kworker/u8:3+events_unbound23:00:230
756102998883,4cyclictest794688-21kworker/u8:0+events_unbound21:54:561
756102998678,6cyclictest790161-21/usr/sbin/munin20:55:171
756102998677,7cyclictest853192-21kworker/u8:3+flush-179:000:25:141
756099998676,7cyclictest796543-21apt-get21:15:110
756102998576,7cyclictest831628-21latency_hist23:05:011
756099998576,7cyclictest1213033-21systemd-journal22:30:000
756102998472,9cyclictest817306-21apt-get22:20:111
756099998480,3cyclictest794688-21kworker/u8:0+events_unbound22:04:570
756102998379,3cyclictest801120-21kworker/u8:2+events_unbound21:44:581
756102998278,3cyclictest778326-21kworker/u8:2+events_unbound20:36:141
756102998277,4cyclictest794688-21kworker/u8:0+events_unbound22:08:131
756102998176,4cyclictest721677-21kworker/u8:0+events_unbound19:32:131
756102998075,4cyclictest794688-21kworker/u8:0+events_unbound21:37:131
756102998074,5cyclictest821855-21kworker/u8:3+flush-179:022:45:201
756099998076,3cyclictest830278-21kworker/u8:1+events_unbound23:29:560
756099998071,8cyclictest817016-21kworker/u8:2+flush-179:022:20:010
756102997974,4cyclictest757556-21kworker/u8:1+events_unbound19:22:111
756099997975,3cyclictest786528-21kworker/u8:3+events_unbound21:21:120
756099997975,3cyclictest775129-21kworker/u8:3+events_unbound20:19:550
756099997974,4cyclictest801120-21kworker/u8:2+events_unbound21:32:120
756102997873,4cyclictest834778-21kworker/u8:2+flush-179:023:25:171
756102997873,4cyclictest786528-21kworker/u8:3+events_unbound20:49:551
756099997869,4cyclictest778233-21kworker/u8:0+events_unbound20:20:110
756102997673,2cyclictest794688-21kworker/u8:0+flush-179:022:10:251
756099997672,3cyclictest794688-21kworker/u8:0+events_unbound22:23:120
756099997672,3cyclictest786528-21kworker/u8:3+events_unbound21:29:120
756099997671,4cyclictest821855-21kworker/u8:3+events_unbound23:09:120
756102997571,3cyclictest721677-21kworker/u8:0+events_unbound19:54:131
756102997566,7cyclictest843004-21kworker/u8:1+events_unbound23:50:261
756102997565,8cyclictest823870-21kworker/u8:0+flush-179:022:45:001
756102997466,6cyclictest796831-21diskstats21:15:151
756102997466,6cyclictest781712-21kworker/u8:0+events_unbound20:35:001
756099997470,3cyclictest768698-21kworker/u8:3+events_unbound19:51:120
756099997470,3cyclictest757556-21kworker/u8:1+events_unbound19:24:560
756099997469,4cyclictest841414-21kworker/u8:0+events_unbound23:41:130
756099997468,5cyclictest760804-21kworker/u8:2+flush-179:019:40:020
756099997467,5cyclictest755959-21latency_hist19:10:020
756102997369,3cyclictest757556-21kworker/u8:1+events_unbound19:27:121
756102997368,4cyclictest805895-21kworker/u8:1+events_unbound22:01:111
756102997365,6cyclictest848039-21kworker/u8:2+events_unbound00:10:251
756102997365,6cyclictest848039-21kworker/u8:2+events_unbound00:10:241
756099997368,4cyclictest841414-21kworker/u8:0+events_unbound23:47:280
756099997368,4cyclictest771879-21kworker/u8:1+events_unbound20:04:110
756099997366,6cyclictest794688-21kworker/u8:0+flush-179:021:35:260
756099997267,4cyclictest841414-21kworker/u8:0+events_unbound00:07:110
756099997167,3cyclictest823870-21kworker/u8:0+events_unbound22:41:130
756102997066,3cyclictest778326-21kworker/u8:2+events_unbound20:54:571
756099996965,3cyclictest721677-21kworker/u8:0+events_unbound19:32:080
756099996864,3cyclictest781712-21kworker/u8:0+events_unbound20:38:120
756099996862,4cyclictest823870-21kworker/u8:0+events_unbound22:50:030
756099996555,8cyclictest1213033-21systemd-journal00:15:010
756099996555,8cyclictest1213033-21systemd-journal00:15:000
756099996459,4cyclictest739428-21kworker/u8:3+events_unbound19:15:170
756102996358,4cyclictest1213033-21systemd-journal21:22:111
756105996253,6cyclictest812224-21turbostat22:05:003
756102996255,5cyclictest861615-21/usr/sbin/munin00:35:231
756102996156,4cyclictest818676-21kworker/u8:1+events_unbound22:26:111
756099996152,4cyclictest778326-21kworker/u8:2+events_unbound20:58:140
756102996056,3cyclictest794688-21kworker/u8:0+events_unbound21:59:121
756102996055,4cyclictest786528-21kworker/u8:3+flush-179:021:25:171
756102996055,4cyclictest771879-21kworker/u8:1+events_unbound20:10:141
756102996052,6cyclictest830278-21kworker/u8:1+flush-179:023:10:011
756102995955,3cyclictest794688-21kworker/u8:0+events_unbound21:14:131
756102995955,3cyclictest794688-21kworker/u8:0+events_unbound21:14:131
756102995955,3cyclictest778233-21kworker/u8:0+events_unbound20:20:281
756102995954,4cyclictest841414-21kworker/u8:0+events_unbound23:40:251
756102995854,3cyclictest801120-21kworker/u8:2+events_unbound21:45:021
756102995853,4cyclictest834778-21kworker/u8:2+events_unbound23:30:011
756102995850,6cyclictest770562-21apt-get19:55:121
756099995751,4cyclictest841414-21kworker/u8:0+flush-179:000:20:190
756099995652,3cyclictest805895-21kworker/u8:1+events_unbound21:52:210
756099995651,4cyclictest778326-21kworker/u8:2+events_unbound20:40:040
756099995650,5cyclictest760804-21kworker/u8:2+flush-179:019:45:240
756099995347,5cyclictest786528-21kworker/u8:3+flush-179:021:10:200
756099995347,5cyclictest786528-21kworker/u8:3+flush-179:021:10:200
756099995250,1cyclictest818676-21kworker/u8:1+events_unbound22:35:240
4577091510,14ptp4l441ktimers/319:10:013
756102994844,3cyclictest786528-21kworker/u8:3+events_unbound21:08:121
756102994743,3cyclictest794688-21kworker/u8:0+events_unbound22:19:121
756099994534,9cyclictest1213033-21systemd-journal21:59:550
75610399440,35cyclictest0-21swapper/220:49:002
756102994433,10cyclictest760804-21kworker/u8:2+flush-179:019:40:161
75610399420,1cyclictest0-21swapper/223:02:002
756105994135,5cyclictest759178-21turbostat19:20:003
756103994138,2cyclictest0-21swapper/222:26:592
756103994138,2cyclictest0-21swapper/200:32:002
756105994038,1cyclictest0-21swapper/321:22:593
75610599400,38cyclictest797892-21turbostat21:20:003
75610599400,1cyclictest0-21swapper/321:01:593
756103994034,5cyclictest0-21swapper/223:12:592
756102994036,3cyclictest853192-21kworker/u8:3+events_unbound00:17:261
756103993931,7cyclictest0-21swapper/223:40:582
756105993836,1cyclictest0-21swapper/320:24:593
75610399380,35cyclictest0-21swapper/223:00:002
756105993734,2cyclictest0-21swapper/320:59:583
756105993727,8cyclictest765562-21turbostat19:40:013
756103993734,2cyclictest0-21swapper/219:24:552
4577091370,2ptp4l441ktimers/321:35:333
756105993634,1cyclictest0-21swapper/322:27:593
756105993634,1cyclictest0-21swapper/320:47:593
756105993633,2cyclictest0-21swapper/323:00:593
75610599360,35cyclictest0-21swapper/321:49:593
75610599360,35cyclictest0-21swapper/320:44:593
75610599360,1cyclictest0-21swapper/323:28:593
75610599360,1cyclictest0-21swapper/319:34:593
756103993633,2cyclictest0-21swapper/222:32:592
756103993633,2cyclictest0-21swapper/200:14:552
756103993633,2cyclictest0-21swapper/200:14:552
756105993533,1cyclictest0-21swapper/323:15:003
756105993533,1cyclictest0-21swapper/320:15:583
756105993533,1cyclictest0-21swapper/319:41:593
756105993533,1cyclictest0-21swapper/300:04:593
75610399350,1cyclictest0-21swapper/223:10:002
4577091350,3ptp4l441ktimers/322:20:123
756105993432,1cyclictest0-21swapper/321:32:593
756105993432,1cyclictest0-21swapper/320:50:593
756103993431,2cyclictest0-21swapper/222:09:552
75610399340,27cyclictest0-21swapper/222:00:152
756105993331,1cyclictest0-21swapper/322:16:003
756105993331,1cyclictest0-21swapper/321:11:593
756105993331,1cyclictest0-21swapper/321:11:593
756103993330,2cyclictest0-21swapper/222:22:592
756103993330,2cyclictest0-21swapper/219:29:562
756103993330,2cyclictest0-21swapper/200:04:002
756103993327,5cyclictest0-21swapper/222:13:592
756103993325,7cyclictest0-21swapper/220:50:132
756105993230,1cyclictest0-21swapper/321:29:563
756105993230,1cyclictest0-21swapper/300:10:593
756105993230,1cyclictest0-21swapper/300:10:583
756103993229,2cyclictest0-21swapper/222:54:552
756103993225,6cyclictest0-21swapper/222:35:122
756103993224,7cyclictest0-21swapper/200:35:132
756103993128,2cyclictest0-21swapper/220:08:592
756105993028,1cyclictest0-21swapper/323:41:593
756105993028,1cyclictest0-21swapper/323:39:543
756105993028,1cyclictest0-21swapper/300:07:583
756103993027,2cyclictest0-21swapper/200:23:582
756103993027,2cyclictest0-21swapper/200:16:002
756103993021,2cyclictest0-21swapper/220:37:592
75610399300,29cyclictest0-21swapper/219:30:132
756105992927,1cyclictest0-21swapper/323:05:143
756105992927,1cyclictest0-21swapper/300:30:143
756105992926,2cyclictest0-21swapper/323:00:013
75610599290,27cyclictest0-21swapper/320:25:143
75610599290,27cyclictest0-21swapper/319:25:143
756103992927,1cyclictest0-21swapper/220:25:002
756103992926,2cyclictest0-21swapper/221:38:592
75610399290,28cyclictest0-21swapper/223:25:102
75610399290,28cyclictest0-21swapper/220:30:122
75610399290,27cyclictest0-21swapper/223:45:142
75610399290,27cyclictest0-21swapper/223:40:012
75610399290,27cyclictest0-21swapper/223:15:112
75610399290,27cyclictest0-21swapper/221:15:132
75610399290,27cyclictest0-21swapper/200:25:112
4577091290,6ptp4l441ktimers/300:39:593
756105992826,1cyclictest0-21swapper/323:30:133
756105992826,1cyclictest0-21swapper/321:55:143
756105992826,1cyclictest0-21swapper/321:52:593
756105992826,1cyclictest0-21swapper/300:00:023
756105992825,2cyclictest0-21swapper/322:46:593
75610599280,27cyclictest0-21swapper/322:40:163
75610599280,26cyclictest0-21swapper/320:35:023
75610599280,26cyclictest0-21swapper/319:45:133
756103992825,2cyclictest0-21swapper/222:45:122
756103992825,2cyclictest0-21swapper/221:32:002
756103992825,2cyclictest0-21swapper/221:01:592
756103992825,2cyclictest0-21swapper/220:18:002
756103992823,4cyclictest0-21swapper/221:20:592
75610399280,2cyclictest0-21swapper/220:10:122
75610399280,26cyclictest0-21swapper/223:55:022
75610399280,26cyclictest0-21swapper/223:20:032
75610399280,26cyclictest0-21swapper/219:35:102
4577091280,6ptp4l61490irq/134-eno1-TxRx-021:10:003
4577091280,6ptp4l441ktimers/322:35:013
4577091280,5ptp4l441ktimers/320:10:013
756105992725,1cyclictest0-21swapper/323:47:003
756105992725,1cyclictest0-21swapper/300:28:003
756105992724,2cyclictest0-21swapper/320:13:593
756103992725,1cyclictest0-21swapper/221:45:122
756103992724,2cyclictest0-21swapper/219:57:002
756103992724,2cyclictest0-21swapper/219:45:582
75610399270,19cyclictest0-21swapper/221:41:592
4577091270,6ptp4l441ktimers/319:54:563
4577091270,5ptp4l61490irq/134-eno1-TxRx-020:00:003
4577091270,5ptp4l441ktimers/322:40:013
4577091270,4ptp4l441ktimers/320:05:013
756103992623,2cyclictest0-21swapper/221:57:592
756103992623,2cyclictest0-21swapper/220:27:592
756103992623,2cyclictest0-21swapper/219:52:592
75610399260,24cyclictest0-21swapper/223:50:592
75610399260,24cyclictest0-21swapper/221:10:002
4577091260,6ptp4l61490irq/134-eno1-TxRx-023:54:553
4577091260,6ptp4l441ktimers/300:19:553
4577091260,5ptp4l61490irq/134-eno1-TxRx-021:44:563
4577091260,5ptp4l441ktimers/322:55:013
4577091260,5ptp4l441ktimers/320:34:563
4577091260,5ptp4l441ktimers/300:24:543
756105992522,2cyclictest0-21swapper/319:13:583
756103992523,1cyclictest0-21swapper/222:45:002
4577091250,5ptp4l61490irq/134-eno1-TxRx-022:14:553
4577091250,5ptp4l61490irq/134-eno1-TxRx-019:25:013
4577091250,4ptp4l61490irq/134-eno1-TxRx-022:09:553
756105992421,2cyclictest0-21swapper/323:16:003
756103992421,2cyclictest0-21swapper/221:27:592
756103992421,2cyclictest0-21swapper/221:13:592
756103992421,2cyclictest0-21swapper/221:13:592
756103992421,2cyclictest0-21swapper/219:13:592
75610299246,3cyclictest171rcu_preempt19:10:011
4577091240,4ptp4l441ktimers/323:24:553
756103992320,2cyclictest0-21swapper/221:52:592
756103992220,1cyclictest0-21swapper/220:55:142
756103992219,2cyclictest0-21swapper/220:00:582
756103992118,2cyclictest0-21swapper/222:16:002
756103991916,2cyclictest0-21swapper/219:17:582
756103991816,1cyclictest0-21swapper/219:41:002
756103991714,2cyclictest0-21swapper/223:31:002
756103991512,2cyclictest0-21swapper/220:40:592
7561039985,2cyclictest0-21swapper/200:09:562
7561039930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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