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2026-04-12 - 00:56
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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 Sat Apr 11, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4012801999383,8cyclictest4079851-21apt-get10:40:010
4012803999285,5cyclictest4038181-21kworker/u8:1+flush-179:010:00:011
4012803998175,4cyclictest4097762-21kworker/u8:0+flush-179:011:45:011
4012803997773,2cyclictest714-21Xorg11:52:591
4012803997771,5cyclictest4068710-21kworker/u8:2+flush-179:010:15:011
4012803997771,5cyclictest4068710-21kworker/u8:2+flush-179:010:15:001
4012803997565,6cyclictest4057608-21kworker/u8:3+flush-179:009:40:001
4012803997561,11cyclictest4097626-21latency_hist11:35:021
4012803997468,4cyclictest4038181-21kworker/u8:1+flush-179:008:45:201
4012801997465,7cyclictest4065518-21latency_hist09:55:000
4012803997267,4cyclictest4033450-21kworker/u8:3+events_unbound08:15:261
4012803997266,4cyclictest4057608-21kworker/u8:3+flush-179:010:00:161
4012803997265,5cyclictest4012744-21kworker/u8:0+flush-179:007:10:211
4012803997259,11cyclictest4038181-21kworker/u8:1+events_unbound09:00:141
4012803997164,5cyclictest4091301-21kworker/u8:3+events_unbound11:20:151
4012801997164,4cyclictest4023925-21kworker/u8:0+flush-179:007:55:210
4012801997163,5cyclictest4097762-21kworker/u8:0+flush-179:012:20:210
4012803997061,6cyclictest4010845-21kworker/u8:3+flush-179:007:25:201
4012803997051,17cyclictest4078245-21kworker/u8:2+flush-179:010:55:001
4012803996958,7cyclictest4012744-21kworker/u8:0+flush-179:007:15:211
4012803996835,31cyclictest714-21Xorg12:11:591
4012803996756,8cyclictest4072124-21/usr/sbin/munin10:15:231
4012803996663,2cyclictest0-21swapper/109:50:581
4012803996660,5cyclictest4071863-21kworker/u8:0+flush-179:010:20:241
4012803996660,4cyclictest266-21systemd-journal07:45:191
4012803996657,7cyclictest4097762-21kworker/u8:0+flush-179:012:20:001
4012801996657,7cyclictest4076670-21latency_hist10:30:010
4012801996653,10cyclictest266-21systemd-journal09:00:010
4012803996558,5cyclictest4015943-21kworker/u8:1+events_unbound08:10:011
4012803996357,4cyclictest4088321-21kworker/u8:1+flush-179:011:10:191
4012801996356,4cyclictest4038181-21kworker/u8:1+flush-179:008:50:160
4012801996353,8cyclictest4067381-21apt-get10:00:120
4012803996256,4cyclictest4050151-21kworker/u8:2+flush-179:009:10:011
4012801996258,3cyclictest4057608-21kworker/u8:3+flush-179:009:40:250
4012801996255,5cyclictest4101118-21kworker/u8:1+flush-179:012:05:250
4012803995951,5cyclictest4057608-21kworker/u8:3+flush-179:009:45:161
4012803995951,5cyclictest4057608-21kworker/u8:3+flush-179:009:45:151
4012803995945,4cyclictest4015943-21kworker/u8:1+events_unbound07:45:011
4012803995853,3cyclictest4091232-21kworker/u8:2+events_unbound11:45:231
4012803995852,4cyclictest4038181-21kworker/u8:1+events_unbound08:50:241
4012803995852,4cyclictest4008122-21kworker/u8:2+flush-179:007:20:221
401280399582,53cyclictest1-21systemd09:15:011
4012803995751,4cyclictest4038181-21kworker/u8:1+events_unbound08:30:231
4012803995750,5cyclictest4107450-21latency_hist12:05:011
4012803995650,4cyclictest4039776-21kworker/u8:2+flush-179:008:35:231
4012803995649,4cyclictest4054428-21kworker/u8:0+flush-179:009:30:151
4012803995646,8cyclictest4094708-21apt-get11:25:111
4012801995647,7cyclictest4091232-21kworker/u8:2+flush-179:011:45:210
4012803995548,5cyclictest4038181-21kworker/u8:1+flush-179:009:40:161
4012803995547,7cyclictest4091301-21kworker/u8:3+flush-179:011:20:001
4012803995547,6cyclictest4085124-21kworker/u8:0+flush-179:011:05:161
4012803995545,7cyclictest4050151-21kworker/u8:2+flush-179:009:20:211
4012801995537,15cyclictest4032082-21apt-get08:10:120
4012801995537,15cyclictest4032082-21apt-get08:10:120
4012803995446,6cyclictest4101118-21kworker/u8:1+flush-179:012:10:011
4012801995446,6cyclictest4039776-21kworker/u8:2+flush-179:008:35:230
4012801995446,6cyclictest4025461-21latency_hist07:50:010
4012803995348,3cyclictest4097762-21kworker/u8:0+flush-179:012:20:251
4012803995346,5cyclictest4078245-21kworker/u8:2+events_unbound10:35:241
4012803995345,6cyclictest4036613-21latency_hist08:25:011
4012801995347,4cyclictest4097762-21kworker/u8:0+flush-179:012:35:170
4012801995345,6cyclictest4035012-21latency_hist08:20:000
4012801995335,17cyclictest0-21swapper/009:46:000
4012801995335,17cyclictest0-21swapper/009:46:000
4012801995331,20cyclictest4031865-21systemd-run08:10:000
4012803995244,6cyclictest4097762-21kworker/u8:0+flush-179:011:40:001
4012801995244,6cyclictest4010845-21kworker/u8:3+flush-179:007:40:000
4012801995243,6cyclictest4015943-21kworker/u8:1+flush-179:008:00:180
4012803995142,7cyclictest4023925-21kworker/u8:0+events_unbound07:55:261
4012801995127,9cyclictest266-21systemd-journal07:30:000
4012801995043,5cyclictest4041632-21kworker/u8:0+flush-179:009:05:160
4012803994944,4cyclictest4038181-21kworker/u8:1+flush-179:009:15:201
4012803994942,5cyclictest4054428-21kworker/u8:0+flush-179:009:25:261
4012801994933,14cyclictest714-21Xorg10:31:000
4577091480,13ptp4l441ktimers/307:10:013
4577091480,13ptp4l441ktimers/307:10:013
4012809994841,6cyclictest0-21swapper/308:55:593
4012803994842,4cyclictest4041632-21kworker/u8:0+flush-179:008:40:171
4012801994841,5cyclictest4008122-21kworker/u8:2+flush-179:007:20:000
4012801994839,7cyclictest4096583-21diskstats11:30:170
4012803994741,4cyclictest4075131-21kworker/u8:3+events_unbound10:55:241
4012803994735,9cyclictest4086751-21apt-get11:00:141
4012803994638,6cyclictest4015943-21kworker/u8:1+events_unbound07:50:281
4012801994641,4cyclictest4038181-21kworker/u8:1+flush-179:009:00:210
4012803994338,4cyclictest4038181-21kworker/u8:1+flush-179:008:29:541
4012803994337,5cyclictest4097762-21kworker/u8:0+flush-179:012:30:201
401280999420,40cyclictest0-21swapper/309:35:593
4012803994237,4cyclictest4038181-21kworker/u8:1+events_unbound08:55:151
4012803994237,3cyclictest4077213-21diskstats10:30:151
4012803994236,4cyclictest4080384-21apt-get10:40:121
401280399421,39cyclictest714-21Xorg10:26:001
4012801994238,3cyclictest714-21Xorg09:35:590
4012801994236,5cyclictest4010845-21kworker/u8:3+flush-179:007:40:220
4012801994236,4cyclictest4067121-21perf10:00:000
4012801994235,5cyclictest4012744-21kworker/u8:0+events_unbound07:10:250
401280999410,39cyclictest4067123-21turbostat10:00:003
4012801994134,5cyclictest4041632-21kworker/u8:0+flush-179:008:45:010
4012801994133,6cyclictest4097762-21kworker/u8:0+flush-179:012:00:000
4012801994133,5cyclictest4097762-21kworker/u8:0+flush-179:012:30:210
401280199411,3cyclictest4099505-21idleruntime-cro11:40:010
4012803994027,10cyclictest266-21systemd-journal12:40:001
4012801994034,5cyclictest4038181-21kworker/u8:1+events_unbound08:30:010
401280199400,38cyclictest714-21Xorg09:21:580
4012803993934,4cyclictest4114074-21kworker/u8:1+events_unbound12:25:141
401280399390,37cyclictest714-21Xorg08:10:591
401280399390,37cyclictest714-21Xorg08:10:581
4012801993936,2cyclictest0-21swapper/010:23:590
4012801993935,3cyclictest4038181-21kworker/u8:1+flush-179:009:15:260
4012801993934,4cyclictest4114074-21kworker/u8:1+flush-179:012:25:160
4012801993934,4cyclictest4073484-21run-parts10:20:000
4012801993933,4cyclictest4097762-21kworker/u8:0+flush-179:011:50:260
4012801993929,8cyclictest4038181-21kworker/u8:1+flush-179:008:50:010
4012801993927,10cyclictest4056234-21apt-get09:25:110
4012809993835,2cyclictest0-21swapper/310:48:593
4012806993834,2cyclictest0-21swapper/209:56:592
401280699380,36cyclictest0-21swapper/209:47:002
401280699380,36cyclictest0-21swapper/209:46:592
4012803993833,4cyclictest4068710-21kworker/u8:2+flush-179:010:05:211
4012801993835,2cyclictest714-21Xorg07:31:590
4012801993834,3cyclictest4084925-21systemd-run10:55:000
4012801993833,3cyclictest4107481-21systemd-run12:05:000
4012809993735,1cyclictest0-21swapper/310:51:593
4012809993734,2cyclictest0-21swapper/311:46:593
4012809993731,4cyclictest4075098-21turbostat10:25:003
4012806993734,2cyclictest0-21swapper/212:04:552
4012806993734,2cyclictest0-21swapper/208:36:592
4012806993733,2cyclictest0-21swapper/211:54:552
401280699370,35cyclictest0-21swapper/212:09:552
401280399371,1cyclictest0-21swapper/111:58:581
4012801993735,1cyclictest0-21swapper/010:14:560
4012801993735,1cyclictest0-21swapper/010:14:550
4012801993734,2cyclictest0-21swapper/011:23:000
4012801993734,2cyclictest0-21swapper/008:23:590
4012801993733,2cyclictest714-21Xorg12:10:590
4012801993731,4cyclictest4070301-21latency_hist10:10:010
4012801993728,7cyclictest4075131-21kworker/u8:3+events_unbound11:05:000
401280999360,35cyclictest0-21swapper/312:11:003
401280999360,35cyclictest0-21swapper/308:14:563
401280999360,35cyclictest0-21swapper/308:14:563
401280999360,35cyclictest0-21swapper/307:42:593
401280999360,1cyclictest0-21swapper/310:31:003
4012806993633,2cyclictest0-21swapper/210:58:592
4012806993633,2cyclictest0-21swapper/207:28:592
4012806993632,2cyclictest0-21swapper/209:10:582
401280699360,1cyclictest0-21swapper/212:21:592
4012803993631,4cyclictest4015943-21kworker/u8:1+flush-179:008:00:271
401280199363,4cyclictest4091512-21apt-get11:15:130
4012801993631,4cyclictest4112269-21systemd-run12:20:000
401280199360,1cyclictest0-21swapper/011:09:550
4577091350,27ptp4l61490irq/134-eno1-TxRx-008:45:133
4012809993533,1cyclictest0-21swapper/310:55:593
4012809993532,2cyclictest0-21swapper/312:27:593
4012809993532,2cyclictest0-21swapper/312:18:593
4012806993531,2cyclictest0-21swapper/211:27:002
4012803993531,3cyclictest714-21Xorg07:37:001
4012801993530,4cyclictest4051204-21turbostat09:14:550
4012809993432,1cyclictest0-21swapper/308:44:563
4012809993431,2cyclictest0-21swapper/307:30:593
4012806993429,3cyclictest0-21swapper/210:36:002
4012803993427,5cyclictest4008122-21kworker/u8:2+events_unbound07:30:141
4012801993427,5cyclictest4012797-21cyclictest07:22:000
4012801993426,6cyclictest266-21systemd-journal11:42:500
4012806993330,2cyclictest0-21swapper/207:13:592
401280699330,30cyclictest0-21swapper/209:23:592
4012801993330,2cyclictest714-21Xorg09:33:000
4012801993329,2cyclictest0-21swapper/010:48:590
4012801993325,6cyclictest714-21Xorg11:12:590
4012809993230,1cyclictest0-21swapper/310:28:593
4012809993229,2cyclictest0-21swapper/312:21:593
4012809993226,5cyclictest4049356-21turbostat09:05:003
4012806993229,2cyclictest0-21swapper/209:04:562
4012801993226,5cyclictest4015943-21kworker/u8:1+flush-179:007:50:190
401280199321,29cyclictest4085143-21apt-get10:55:130
4012809993129,1cyclictest0-21swapper/312:09:553
4012809993129,1cyclictest0-21swapper/309:47:003
4012809993129,1cyclictest0-21swapper/309:47:003
401280699310,28cyclictest0-21swapper/211:11:592
4012803993127,3cyclictest0-21swapper/110:45:141
401280199311,28cyclictest4094708-21apt-get11:25:130
4577091300,9ptp4l61490irq/134-eno1-TxRx-008:09:543
4577091300,7ptp4l441ktimers/311:10:003
4577091300,4ptp4l441ktimers/309:09:553
4012809993028,1cyclictest0-21swapper/311:10:593
4012806993027,2cyclictest0-21swapper/211:16:582
4012806993027,2cyclictest0-21swapper/210:20:132
4012806993027,2cyclictest0-21swapper/208:05:142
4012806993026,2cyclictest0-21swapper/208:31:002
401280699300,27cyclictest0-21swapper/209:40:152
4012801993024,4cyclictest4078245-21kworker/u8:2+flush-179:010:35:160
4577091290,7ptp4l61490irq/134-eno1-TxRx-012:05:013
4577091290,7ptp4l441ktimers/310:10:003
4577091290,7ptp4l441ktimers/310:05:013
4577091290,7ptp4l441ktimers/309:20:013
4577091290,7ptp4l441ktimers/308:19:593
4577091290,6ptp4l441ktimers/311:55:013
4577091290,6ptp4l441ktimers/311:40:023
4577091290,6ptp4l441ktimers/310:15:023
4577091290,6ptp4l441ktimers/310:15:013
4012806992926,2cyclictest0-21swapper/211:40:122
4012806992926,2cyclictest0-21swapper/210:40:022
4012806992926,2cyclictest0-21swapper/207:40:132
4012806992925,2cyclictest0-21swapper/210:45:582
4012806992925,2cyclictest0-21swapper/210:30:132
401280699290,2cyclictest0-21swapper/208:15:142
401280699290,27cyclictest0-21swapper/212:15:132
401280699290,27cyclictest0-21swapper/211:24:552
401280699290,27cyclictest0-21swapper/210:15:142
401280699290,27cyclictest0-21swapper/209:05:012
4577091280,7ptp4l441ktimers/307:30:003
4577091280,6ptp4l61490irq/134-eno1-TxRx-011:35:013
4577091280,6ptp4l61490irq/134-eno1-TxRx-009:30:003
4577091280,6ptp4l441ktimers/310:39:553
4577091280,6ptp4l441ktimers/310:20:013
4577091280,6ptp4l441ktimers/309:35:013
4577091280,6ptp4l441ktimers/308:00:003
4577091280,5ptp4l441ktimers/309:15:013
4012809992826,1cyclictest0-21swapper/309:40:133
4012809992825,2cyclictest0-21swapper/310:40:023
4012809992825,2cyclictest0-21swapper/307:10:133
401280999280,26cyclictest0-21swapper/311:15:133
401280999280,26cyclictest0-21swapper/311:00:163
401280999280,26cyclictest0-21swapper/308:00:153
401280999280,1cyclictest0-21swapper/311:59:593
4012806992825,2cyclictest0-21swapper/212:30:122
4012806992825,2cyclictest0-21swapper/212:27:002
401280699280,2cyclictest0-21swapper/211:35:012
401280699280,26cyclictest0-21swapper/211:00:162
401280699280,26cyclictest0-21swapper/209:28:592
401280699280,26cyclictest0-21swapper/207:54:592
401280699280,25cyclictest0-21swapper/208:04:552
401280199280,26cyclictest714-21Xorg08:33:000
4577091270,7ptp4l61490irq/134-eno1-TxRx-007:20:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-011:30:003
4577091270,5ptp4l441ktimers/307:55:003
4012809992725,1cyclictest0-21swapper/311:40:123
401280999270,26cyclictest0-21swapper/308:35:583
4012806992724,2cyclictest0-21swapper/210:25:142
4012806992723,2cyclictest0-21swapper/209:53:592
401280699270,24cyclictest0-21swapper/209:33:582
231999270,15rtkit-daemon4011814-21grep07:05:181
231999270,15rtkit-daemon4011814-21grep07:05:181
4577091260,5ptp4l61490irq/134-eno1-TxRx-008:30:003
4577091260,5ptp4l61490irq/134-eno1-TxRx-007:40:003
4577091260,5ptp4l441ktimers/311:24:563
4577091260,4ptp4l441ktimers/308:24:553
4012809992624,1cyclictest0-21swapper/309:23:583
4012806992623,2cyclictest0-21swapper/210:10:592
4012806992623,2cyclictest0-21swapper/210:10:592
4012806992622,2cyclictest0-21swapper/211:55:592
4012806992622,2cyclictest0-21swapper/211:45:592
401280699260,2cyclictest0-21swapper/210:05:592
401280699260,24cyclictest0-21swapper/210:51:002
4577091250,5ptp4l61490irq/134-eno1-TxRx-009:54:553
4577091250,4ptp4l441ktimers/308:54:553
4577091250,3ptp4l441ktimers/307:50:013
401280999250,24cyclictest0-21swapper/312:35:593
4012806992523,1cyclictest0-21swapper/210:00:132
4012806992522,2cyclictest0-21swapper/212:38:592
4012806992522,2cyclictest0-21swapper/207:35:002
401280699250,2cyclictest0-21swapper/207:35:142
4012809992422,1cyclictest0-21swapper/308:31:003
4012806992422,1cyclictest0-21swapper/207:50:002
4012806992421,2cyclictest0-21swapper/209:37:592
4012809992321,1cyclictest4017497-21turbostat07:25:013
4012806992319,2cyclictest0-21swapper/207:15:592
4012806992219,2cyclictest0-21swapper/208:50:592
4012806992219,2cyclictest0-21swapper/208:20:582
4012806992219,2cyclictest0-21swapper/207:55:592
4012809992118,2cyclictest4116996-21turbostat12:35:013
4012806992118,2cyclictest0-21swapper/211:30:142
4012806992017,2cyclictest0-21swapper/212:12:592
4012806992017,2cyclictest0-21swapper/208:44:592
4012801992014,4cyclictest4012870-21ls07:10:010
4012801992014,4cyclictest4012870-21ls07:10:010
4012806991815,2cyclictest0-21swapper/208:48:002
4012806991815,2cyclictest0-21swapper/207:24:542
4012806991512,2cyclictest0-21swapper/209:17:592
401280699129,2cyclictest0-21swapper/211:05:592
401280699120,2cyclictest0-21swapper/209:00:002
40128069996,2cyclictest0-21swapper/208:28:442
40128069960,1cyclictest0-21swapper/208:10:212
40128069960,1cyclictest0-21swapper/208:10:202
40128069930,2cyclictest0-21swapper/207:10:012
40128069930,2cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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