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2026-04-19 - 16:58
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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 highest latencies:
System rackeslot6.osadl.org (updated Sun Apr 19, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
954158999685,8cyclictest970700-21kworker/u8:0+flush-179:008:25:010
954160998473,8cyclictest1025292-21cat10:50:021
954160998377,4cyclictest952600-21kworker/u8:2+flush-179:007:14:561
954158998168,10cyclictest1213033-21systemd-journal08:34:550
954160997968,8cyclictest1048010-21apt-get12:00:121
954158997970,6cyclictest1010611-21latency_hist10:05:020
954160997872,4cyclictest968465-21kworker/u8:3+flush-179:007:59:551
954160997771,4cyclictest1023382-21kworker/u8:3+flush-179:011:09:551
954160997669,5cyclictest1013769-21kworker/u8:0+flush-179:010:39:561
954160997667,6cyclictest1018568-21latency_hist10:30:011
954158997662,9cyclictest1213033-21systemd-journal11:10:010
954158997567,6cyclictest1033181-21kworker/u8:2+flush-179:011:55:000
954160997161,7cyclictest1213033-21systemd-journal12:16:551
954160996964,4cyclictest1028648-21kworker/u8:0+flush-179:011:19:551
954160996861,5cyclictest997861-21kworker/u8:1+flush-179:010:05:171
954160996762,4cyclictest960705-21kworker/u8:1+flush-179:007:44:561
954160996759,6cyclictest994659-21kworker/u8:0+events_unbound09:15:231
954160996759,6cyclictest1213033-21systemd-journal09:48:561
954160996758,7cyclictest1018806-21/usr/sbin/munin10:30:241
954160996758,7cyclictest1018806-21/usr/sbin/munin10:30:231
954160996756,9cyclictest1045557-21kworker/u8:0+flush-179:012:20:211
954160996660,4cyclictest997861-21kworker/u8:1+events_unbound09:55:001
954160996659,5cyclictest970700-21kworker/u8:0+events_unbound08:35:011
954158996660,4cyclictest994659-21kworker/u8:0+flush-179:009:15:000
954160996458,4cyclictest970700-21kworker/u8:0+events_unbound08:05:001
954158996457,5cyclictest984885-21apt-get08:45:010
954160996358,4cyclictest1033181-21kworker/u8:2+flush-179:011:49:551
954160996354,7cyclictest987779-21kworker/u8:0+flush-179:009:00:141
954158996359,2cyclictest714-21Xorg07:37:590
954158996357,5cyclictest714-21Xorg09:32:590
954169996260,1cyclictest0-21swapper/307:38:003
954169996259,2cyclictest0-21swapper/309:32:593
954158996255,5cyclictest1017235-21apt-get10:25:130
954158996254,5cyclictest1057555-21latency_hist12:30:010
954160996150,8cyclictest1045557-21kworker/u8:0+flush-179:012:00:011
954158996152,7cyclictest1023382-21kworker/u8:3+flush-179:011:15:240
954160996048,9cyclictest1060749-21apt-get12:39:591
954158996052,6cyclictest988310-21latency_hist08:55:010
954158996051,7cyclictest994659-21kworker/u8:0+events_unbound09:20:000
954160995953,4cyclictest999498-21kworker/u8:3+flush-179:009:30:221
954160995952,5cyclictest1023382-21kworker/u8:3+flush-179:011:10:211
954160995950,6cyclictest1013769-21kworker/u8:0+flush-179:010:45:171
954158995947,9cyclictest1024938-21apt-get10:50:000
954160995851,5cyclictest997861-21kworker/u8:1+events_unbound10:00:011
954160995851,4cyclictest962039-21latency_hist07:35:011
954160995850,6cyclictest954154-21cyclictest09:06:591
954160995749,6cyclictest1023382-21kworker/u8:3+flush-179:011:40:221
954158995747,8cyclictest3993713-21kworker/u8:4+flush-179:007:15:220
954158995649,4cyclictest1036342-21latency_hist11:25:010
954158995646,8cyclictest1036600-21apt-get11:25:130
954160995543,10cyclictest997861-21kworker/u8:1+flush-179:009:35:101
954160995449,4cyclictest1054078-21kworker/u8:1+flush-179:012:35:011
954160995448,4cyclictest1010646-21kworker/u8:3+events_unbound10:15:171
954160995446,6cyclictest1213033-21systemd-journal10:20:551
954160995446,4cyclictest1018552-21kworker/u8:1+flush-179:010:40:151
954158995445,7cyclictest1004481-21/usr/sbin/munin09:45:250
954158995441,6cyclictest1054107-21latency_hist12:20:010
954160995339,10cyclictest510-21rs:main1
954160995248,3cyclictest1054078-21kworker/u8:1+flush-179:012:25:251
954160995245,6cyclictest1033181-21kworker/u8:2+events_unbound11:40:011
954158995246,4cyclictest1213033-21systemd-journal11:31:550
954158995141,8cyclictest1213033-21systemd-journal09:40:010
954158995140,9cyclictest998129-21apt-get09:25:120
954160995040,8cyclictest965287-21kworker/u8:2+flush-179:007:55:001
954160994943,4cyclictest987779-21kworker/u8:0+flush-179:008:55:141
954160994941,7cyclictest3993713-21kworker/u8:4+flush-179:007:20:001
954160994938,9cyclictest1035015-21apt-get11:20:131
954158994939,7cyclictest954054-21latency_hist07:10:020
954160994839,6cyclictest958847-21kworker/u8:0+flush-179:007:45:231
954158994844,3cyclictest1055160-21kworker/u8:3+flush-179:012:30:260
4577091480,13ptp4l61490irq/134-eno1-TxRx-007:10:013
954160994737,8cyclictest976364-21kworker/u8:1+flush-179:008:25:221
954160994737,4cyclictest997861-21kworker/u8:1+events_unbound10:00:211
954158994736,9cyclictest988852-21diskstats08:55:150
954160994640,4cyclictest281ktimers/112:10:141
954160994640,4cyclictest281ktimers/112:10:131
954160994639,5cyclictest970700-21kworker/u8:0+flush-179:008:20:191
954160994638,6cyclictest987779-21kworker/u8:0+events_unbound08:55:001
95415899467,37cyclictest958880-21perf07:25:000
954158994639,6cyclictest960705-21kworker/u8:1+flush-179:007:45:000
954158994637,6cyclictest1045557-21kworker/u8:0+events_unbound12:05:250
954160994537,6cyclictest1033181-21kworker/u8:2+events_unbound11:54:591
954158994537,7cyclictest973449-21/usr/sbin/munin08:10:230
954160994439,3cyclictest1051033-21latency_hist12:10:011
954160994430,12cyclictest1004282-21systemd-run09:45:011
954158994436,6cyclictest982226-21diskstats08:35:160
954158994435,6cyclictest1055709-21latency_hist12:25:010
954160994340,2cyclictest990155-21kworker/u8:1+events_unbound09:10:231
954160994338,4cyclictest997861-21kworker/u8:1+flush-179:009:25:221
954160994336,5cyclictest959118-21apt-get07:25:101
954158994224,11cyclictest1060844-21apt-key12:40:010
95415899420,34cyclictest0-21swapper/011:59:590
95416999410,5cyclictest997889-21turbostat09:29:553
95416999410,39cyclictest983287-21turbostat08:40:003
95416999410,1cyclictest0-21swapper/309:48:593
954164994138,2cyclictest0-21swapper/208:08:592
95416499410,1cyclictest0-21swapper/211:34:552
954160994136,4cyclictest968465-21kworker/u8:3+flush-179:008:35:251
954160994133,6cyclictest994659-21kworker/u8:0+flush-179:009:20:211
95415899416,7cyclictest0-21swapper/010:30:150
95415899416,7cyclictest0-21swapper/010:30:140
954158994132,6cyclictest1023347-21latency_hist10:45:010
95415899411,2cyclictest714-21Xorg10:19:590
95415899410,32cyclictest714-21Xorg10:51:590
954169994037,2cyclictest0-21swapper/308:34:593
95416999400,38cyclictest996296-21turbostat09:20:003
954160994037,2cyclictest0-21swapper/111:34:541
954160994034,5cyclictest3993713-21kworker/u8:4+flush-179:007:35:161
954158994037,2cyclictest1039494-21kworker/u8:0+flush-179:011:35:250
954158994033,5cyclictest1009008-21latency_hist10:00:000
95415899400,39cyclictest1012213-21turbostat10:14:550
954169993933,4cyclictest965265-21turbostat07:45:003
954164993936,2cyclictest0-21swapper/210:29:552
95416499390,36cyclictest0-21swapper/210:07:592
95416499390,36cyclictest0-21swapper/209:54:552
954160993934,4cyclictest1036386-21kworker/u8:1+flush-179:011:25:221
954160993931,6cyclictest952600-21kworker/u8:2+flush-179:007:20:201
954158993935,3cyclictest973225-21ls08:10:000
954158993934,4cyclictest191rcuc/009:42:580
954158993932,6cyclictest965514-21apt-get07:45:120
954158993928,9cyclictest1049356-21awk12:05:010
95415899390,37cyclictest714-21Xorg08:04:590
95416999380,36cyclictest0-21swapper/311:31:003
95416499380,36cyclictest0-21swapper/209:13:582
95416499380,36cyclictest0-21swapper/208:10:592
954160993833,3cyclictest1-21systemd11:05:011
954160993832,5cyclictest981465-21kworker/u8:2+events_unbound08:40:191
954160993825,10cyclictest1213033-21systemd-journal08:20:011
954158993828,8cyclictest1213033-21systemd-journal07:29:550
95415899380,37cyclictest0-21swapper/009:55:000
954164993734,2cyclictest0-21swapper/208:45:592
95416499370,35cyclictest0-21swapper/211:39:592
95416499370,35cyclictest0-21swapper/211:03:002
95416499370,35cyclictest0-21swapper/210:44:552
954160993733,2cyclictest714-21Xorg10:11:581
954160993732,4cyclictest965287-21kworker/u8:2+flush-179:008:10:221
954160993730,5cyclictest1026754-21kworker/u8:1+events_unbound10:59:561
954160993730,5cyclictest1026754-21kworker/u8:1+events_unbound10:59:551
954158993735,1cyclictest0-21swapper/010:59:560
954158993735,1cyclictest0-21swapper/010:59:560
954169993633,1cyclictest0-21swapper/307:11:593
954169993630,5cyclictest1015385-21turbostat10:19:593
95416999360,1cyclictest0-21swapper/309:44:583
95416999360,1cyclictest0-21swapper/308:24:553
954164993634,1cyclictest0-21swapper/211:44:592
954164993632,2cyclictest0-21swapper/209:15:592
95416499360,1cyclictest0-21swapper/212:22:592
954169993533,1cyclictest0-21swapper/311:54:583
954169993529,5cyclictest1049355-21turbostat12:05:013
95416999350,1cyclictest0-21swapper/310:24:553
95416999350,1cyclictest0-21swapper/307:29:583
954164993532,2cyclictest0-21swapper/210:39:582
954164993532,2cyclictest0-21swapper/207:53:592
954164993531,2cyclictest0-21swapper/209:34:552
954164993531,2cyclictest0-21swapper/208:43:592
95415899352,31cyclictest978507-21apt-get08:25:130
954169993427,5cyclictest994686-21turbostat09:15:003
954164993431,2cyclictest0-21swapper/208:20:012
954160993431,2cyclictest714-21Xorg08:08:591
954158993431,2cyclictest0-21swapper/007:11:590
95415899342,4cyclictest996544-21apt-get09:20:120
954158993423,8cyclictest1213033-21systemd-journal07:32:550
954169993327,4cyclictest991512-21turbostat09:05:003
954169993327,4cyclictest1047743-21turbostat12:00:003
954164993331,1cyclictest0-21swapper/209:40:002
954164993330,2cyclictest0-21swapper/211:57:592
954164993330,2cyclictest0-21swapper/208:22:592
954164993330,2cyclictest0-21swapper/207:55:592
954164993330,2cyclictest0-21swapper/207:15:582
954158993329,3cyclictest969120-21hwlatdetect07:55:160
954158993328,4cyclictest0-21swapper/011:00:120
954158993327,4cyclictest1021803-21systemd10:40:010
954158993326,6cyclictest976404-21/usr/sbin/munin08:20:010
954158993326,5cyclictest1213033-21systemd-journal09:01:550
954169993230,1cyclictest0-21swapper/312:16:003
954169993230,1cyclictest0-21swapper/310:04:553
954164993229,2cyclictest0-21swapper/208:25:592
954164993229,2cyclictest0-21swapper/207:30:582
954164993228,2cyclictest0-21swapper/211:27:582
954158993228,3cyclictest1016516-21proc_pri10:20:230
954169993130,1cyclictest0-21swapper/309:59:553
954169993129,1cyclictest0-21swapper/310:10:593
954169993125,4cyclictest976423-21turbostat08:20:003
95416999310,2cyclictest0-21swapper/308:42:003
954164993129,1cyclictest0-21swapper/208:39:592
954164993128,2cyclictest0-21swapper/212:14:562
954164993128,2cyclictest0-21swapper/212:14:552
954164993128,2cyclictest0-21swapper/208:33:592
954158993128,2cyclictest0-21swapper/011:45:150
95415899311,29cyclictest714-21Xorg10:06:000
954169993027,2cyclictest0-21swapper/310:06:003
954164993027,2cyclictest0-21swapper/212:37:582
954164993027,2cyclictest0-21swapper/211:06:592
954164993027,2cyclictest0-21swapper/209:59:592
954164993026,2cyclictest0-21swapper/211:12:582
95416499300,28cyclictest0-21swapper/212:25:022
95416499300,28cyclictest0-21swapper/212:15:152
954169992927,1cyclictest0-21swapper/312:35:163
954169992927,1cyclictest0-21swapper/311:45:153
954169992927,1cyclictest0-21swapper/311:07:593
95416999290,28cyclictest0-21swapper/312:30:143
95416999290,27cyclictest0-21swapper/311:20:143
95416999290,27cyclictest0-21swapper/311:00:123
95416999290,27cyclictest0-21swapper/310:30:143
95416999290,27cyclictest0-21swapper/310:30:133
954164992926,2cyclictest0-21swapper/212:00:132
954164992926,2cyclictest0-21swapper/210:30:152
954164992926,2cyclictest0-21swapper/210:30:152
954164992926,2cyclictest0-21swapper/210:15:132
954164992925,2cyclictest0-21swapper/212:06:582
95416499290,27cyclictest0-21swapper/211:50:022
95416499290,27cyclictest0-21swapper/211:15:142
95416499290,27cyclictest0-21swapper/210:00:112
95416499290,27cyclictest0-21swapper/208:50:132
954158992924,3cyclictest991542-21kworker/u8:2+flush-179:009:05:260
954158992924,3cyclictest714-21Xorg08:49:590
954158992920,7cyclictest1213033-21systemd-journal12:14:550
954158992920,7cyclictest1213033-21systemd-journal12:14:550
954169992826,1cyclictest0-21swapper/310:39:563
954169992825,2cyclictest0-21swapper/311:25:143
954169992825,2cyclictest0-21swapper/309:36:593
954169992825,2cyclictest0-21swapper/308:49:593
95416999280,2cyclictest0-21swapper/308:25:133
95416999280,26cyclictest0-21swapper/311:35:133
95416999280,26cyclictest0-21swapper/310:25:153
95416999280,26cyclictest0-21swapper/309:20:123
95416999280,21cyclictest0-21swapper/308:10:143
95416999280,1cyclictest0-21swapper/310:45:133
95416499280,26cyclictest0-21swapper/210:20:132
95416499280,26cyclictest0-21swapper/209:46:582
95416499280,26cyclictest0-21swapper/207:46:592
95416499280,26cyclictest0-21swapper/207:20:132
95416499280,26cyclictest0-21swapper/207:10:132
954169992725,1cyclictest0-21swapper/308:03:593
95416999270,26cyclictest0-21swapper/310:50:033
954164992724,2cyclictest0-21swapper/207:38:592
954164992723,2cyclictest0-21swapper/211:49:552
954164992723,2cyclictest0-21swapper/210:59:562
954164992723,2cyclictest0-21swapper/210:59:552
954158992725,1cyclictest0-21swapper/007:55:000
95415899270,26cyclictest714-21Xorg11:44:000
4577091270,7ptp4l441ktimers/307:50:003
4577091270,6ptp4l441ktimers/307:55:003
954169992624,1cyclictest431rcuc/307:23:593
954169992624,1cyclictest0-21swapper/312:13:593
954169992624,1cyclictest0-21swapper/312:13:593
954169992624,1cyclictest0-21swapper/311:11:593
954169992624,1cyclictest0-21swapper/310:56:593
954169992624,1cyclictest0-21swapper/310:56:593
95416999260,2cyclictest0-21swapper/308:06:593
95416999260,19cyclictest0-21swapper/312:06:593
954164992623,2cyclictest0-21swapper/210:14:592
954164992623,2cyclictest0-21swapper/209:40:132
95416499260,24cyclictest0-21swapper/207:42:002
95416499260,18cyclictest0-21swapper/208:00:592
954169992523,1cyclictest0-21swapper/309:53:003
954169992523,1cyclictest0-21swapper/308:58:593
954169992522,2cyclictest0-21swapper/309:05:593
954169992522,2cyclictest0-21swapper/308:53:593
95416999250,24cyclictest0-21swapper/307:57:593
95416999250,24cyclictest0-21swapper/307:31:583
954164992522,2cyclictest0-21swapper/209:08:592
954164992522,2cyclictest0-21swapper/208:56:002
954158992523,1cyclictest0-21swapper/011:11:590
4577091250,3ptp4l61490irq/134-eno1-TxRx-007:20:013
4577091250,3ptp4l441ktimers/311:20:003
954169992422,1cyclictest0-21swapper/312:29:593
954169992422,1cyclictest0-21swapper/312:20:123
95416999240,1cyclictest0-21swapper/310:43:593
954164992421,2cyclictest0-21swapper/209:28:592
4577091240,3ptp4l441ktimers/311:45:003
954164992320,2cyclictest0-21swapper/211:20:592
954164992320,2cyclictest0-21swapper/210:45:142
954164992219,2cyclictest0-21swapper/209:21:592
95416499200,2cyclictest0-21swapper/212:33:592
954164991714,2cyclictest0-21swapper/210:53:582
954164991714,2cyclictest0-21swapper/209:01:592
95416099179,6cyclictest954162-21latency_hist07:10:011
9541649963,2cyclictest0-21swapper/207:26:212
9541649930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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