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2026-05-10 - 23:21
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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 Sun May 10, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4134989910595,8cyclictest451110-21latency_hist09:05:010
4134989910595,8cyclictest451110-21latency_hist09:05:000
4135029910291,9cyclictest519277-21apt-get12:34:591
413502999585,7cyclictest1213033-21systemd-journal08:55:001
413498999486,6cyclictest476584-21latency_hist10:25:010
413498999486,6cyclictest476584-21latency_hist10:25:000
413502998881,5cyclictest364165-21kworker/u8:1+flush-179:007:15:241
413502998678,6cyclictest499644-21latency_hist11:35:021
413502998677,6cyclictest437591-21latency_hist08:25:001
413502998576,6cyclictest462268-21latency_hist09:40:011
413502998473,8cyclictest455849-21kworker/u8:0+flush-179:010:10:221
413502998374,6cyclictest429377-21latency_hist08:00:011
413498998169,9cyclictest446067-21latency_hist08:50:010
413502998074,4cyclictest421353-21kworker/u8:0+events_unbound07:40:001
413502998072,5cyclictest441012-21kworker/u8:2+flush-179:009:10:141
413502997969,8cyclictest441542-21apt-get08:35:131
413502997867,8cyclictest478178-21apt-get10:30:001
413502997664,8cyclictest1213033-21systemd-journal07:14:041
413498997666,7cyclictest486387-21latency_hist10:55:000
413502997467,5cyclictest521125-21latency_hist12:40:001
413502997465,7cyclictest421358-21kworker/u8:2+flush-179:007:35:011
413502997364,7cyclictest441012-21kworker/u8:2+flush-179:008:55:261
413502997364,6cyclictest481626-21latency_hist10:40:011
413502997364,6cyclictest444482-21latency_hist08:45:001
413502997363,6cyclictest498292-21kworker/u8:1+flush-179:011:55:151
413502997363,6cyclictest498292-21kworker/u8:1+flush-179:011:55:151
413498997257,12cyclictest1213033-21systemd-journal11:30:000
413502997057,7cyclictest421353-21kworker/u8:0+flush-179:008:25:011
413498997064,4cyclictest506931-21kworker/u8:0+flush-179:012:00:010
413498997064,4cyclictest506931-21kworker/u8:0+flush-179:012:00:010
413498997064,4cyclictest493033-21apt-get11:15:030
413498997060,7cyclictest493033-21apt-get11:14:590
413502996658,5cyclictest468864-21/usr/sbin/munin10:00:231
413502996655,8cyclictest434151-21apt-get08:15:031
413502996555,8cyclictest501507-21apt-get11:40:111
413502996361,1cyclictest271rcuc/111:54:591
413502996352,9cyclictest475254-21apt-get10:20:111
413502996352,9cyclictest475254-21apt-get10:20:101
413498996352,8cyclictest465687-21apt-get09:50:090
413498996352,8cyclictest1213033-21systemd-journal10:45:010
413502996255,5cyclictest441012-21kworker/u8:2+flush-179:008:50:001
413498996253,7cyclictest449485-21kworker/u8:1+flush-179:009:05:220
413502996152,6cyclictest491471-21kworker/u8:3+events_unbound11:20:171
413502996152,6cyclictest364165-21kworker/u8:1+flush-179:007:25:271
413502996151,7cyclictest430943-21kworker/u8:1+events_unbound08:15:011
413511996058,1cyclictest0-21swapper/312:35:003
413502996053,5cyclictest455849-21kworker/u8:0+flush-179:010:10:011
413498996053,5cyclictest498292-21kworker/u8:1+flush-179:011:40:000
413498996051,7cyclictest426216-21kworker/u8:3+flush-179:008:00:150
413502995951,6cyclictest413456-21kworker/u8:3+flush-179:007:20:211
413502995945,10cyclictest441029-21latency_hist08:35:011
413502995942,13cyclictest488006-21apt-get11:00:001
413498995951,5cyclictest480018-21latency_hist10:35:010
413498995949,7cyclictest439439-21latency_hist08:30:020
413511995856,1cyclictest0-21swapper/307:35:593
413502995852,4cyclictest498292-21kworker/u8:1+flush-179:011:45:171
413502995850,5cyclictest511051-21latency_hist12:10:011
413502995847,8cyclictest421353-21kworker/u8:0+flush-179:007:45:151
413511995754,2cyclictest0-21swapper/311:54:583
413498995744,10cyclictest434936-21diskstats08:15:160
413502995645,8cyclictest512638-21latency_hist12:15:001
413498995648,6cyclictest449485-21kworker/u8:1+flush-179:009:15:260
413498995647,7cyclictest465432-21latency_hist09:50:010
413511995548,5cyclictest459085-21turbostat09:30:013
413502995550,4cyclictest457464-21kworker/u8:1+flush-179:009:30:221
413502995546,6cyclictest498054-21latency_hist11:30:001
413502995542,10cyclictest1213033-21systemd-journal07:43:251
413498995550,3cyclictest1-21systemd08:24:120
413502995444,8cyclictest462517-21apt-get09:40:111
413498995447,5cyclictest416872-21apt-get07:20:110
413502995347,5cyclictest498292-21kworker/u8:1+flush-179:011:39:561
413502995347,4cyclictest455849-21kworker/u8:0+events_unbound10:30:011
413502995343,7cyclictest457478-21latency_hist09:25:011
413502995250,1cyclictest0-21swapper/112:25:591
413502995244,6cyclictest490884-21kworker/u8:0+events_unbound11:10:231
413502995244,6cyclictest470196-21kworker/u8:2+events_unbound10:15:221
413502995243,6cyclictest481591-21kworker/u8:0+flush-179:010:45:161
413502995243,6cyclictest481591-21kworker/u8:0+flush-179:010:45:151
413498995142,7cyclictest486642-21apt-get10:55:140
4577091500,13ptp4l61490irq/134-eno1-TxRx-007:10:013
413502995044,4cyclictest421353-21kworker/u8:0+flush-179:008:00:261
413502995042,6cyclictest462295-21kworker/u8:2+flush-179:009:55:221
413502995042,6cyclictest462295-21kworker/u8:2+events_unbound09:50:121
413498995047,2cyclictest0-21swapper/010:47:590
413498995047,2cyclictest0-21swapper/010:47:590
413498995038,9cyclictest1213033-21systemd-journal12:10:010
413511994947,1cyclictest0-21swapper/308:41:593
413502994943,5cyclictest455849-21kworker/u8:0+flush-179:009:45:231
413502994940,7cyclictest486366-21kworker/u8:1+flush-179:011:05:191
413498994938,9cyclictest456147-21apt-get09:20:120
413502994841,5cyclictest491471-21kworker/u8:3+flush-179:011:15:251
413498994840,6cyclictest426182-21latency_hist07:50:020
413498994837,9cyclictest452951-21apt-get09:10:100
413502994742,4cyclictest506931-21kworker/u8:0+flush-179:012:15:251
413502994742,4cyclictest421353-21kworker/u8:0+events_unbound08:05:141
413502994737,7cyclictest486422-21kworker/u8:3+events_unbound11:00:021
413502994736,8cyclictest511085-21kworker/u8:3+flush-179:012:20:211
413498994739,6cyclictest506269-21latency_hist11:55:020
413502994636,7cyclictest510-21rs:main1
413498994635,9cyclictest458021-21diskstats09:25:150
413498994633,11cyclictest521115-21apt-get12:40:000
413511994543,1cyclictest0-21swapper/312:25:593
413502994525,18cyclictest454940-21fschecks_time09:15:161
413498994537,6cyclictest1213033-21systemd-journal12:20:000
413498994536,6cyclictest486422-21kworker/u8:3+flush-179:011:00:140
41349899451,41cyclictest512655-21sh12:15:010
413498994436,6cyclictest1213033-21systemd-journal10:01:260
413498994432,9cyclictest415548-21diskstats07:15:150
413502994338,4cyclictest481662-21kworker/u8:3+events_unbound10:40:161
413502994337,5cyclictest484776-21kworker/u8:2+flush-179:010:50:221
413498994337,4cyclictest460907-21apt-get09:35:120
41349899430,5cyclictest441032-21turbostat08:39:550
413511994240,1cyclictest0-21swapper/309:44:553
413498994235,5cyclictest1213033-21systemd-journal12:02:260
413502994135,4cyclictest484-21dbus-daemon09:30:011
413502994134,5cyclictest441012-21kworker/u8:2+flush-179:009:09:551
413498994135,5cyclictest511085-21kworker/u8:3+flush-179:012:20:230
413498994132,7cyclictest480255-21/usr/sbin/munin10:35:240
413511994037,2cyclictest0-21swapper/309:48:593
413502994033,5cyclictest364165-21kworker/u8:1+events_unbound07:10:031
413498994037,2cyclictest0-21swapper/007:11:000
413498994035,3cyclictest478170-21cron10:30:000
413498994033,5cyclictest419788-21latency_hist07:30:010
413498994031,7cyclictest423247-21/usr/sbin/munin07:40:150
41350799390,37cyclictest0-21swapper/212:15:002
41350799390,36cyclictest0-21swapper/211:36:582
413498993935,3cyclictest0-21swapper/007:59:590
413498993934,3cyclictest714-21Xorg12:34:000
41349899391,36cyclictest501507-21apt-get11:40:130
41351199380,36cyclictest0-21swapper/310:52:583
41350799380,35cyclictest0-21swapper/208:12:592
41350799380,2cyclictest0-21swapper/209:00:592
41350799380,2cyclictest0-21swapper/209:00:592
413502993830,6cyclictest1213033-21systemd-journal09:03:261
413502993830,6cyclictest1213033-21systemd-journal09:03:261
413502993828,6cyclictest0-21swapper/107:52:591
413507993734,2cyclictest0-21swapper/209:35:592
41350799370,35cyclictest0-21swapper/210:59:592
41350799370,2cyclictest0-21swapper/208:39:552
413498993734,2cyclictest0-21swapper/007:35:590
413498993733,2cyclictest714-21Xorg11:07:000
413498993733,2cyclictest714-21Xorg09:42:590
413498993729,6cyclictest459303-21/usr/sbin/munin09:30:160
413511993634,1cyclictest0-21swapper/312:21:583
413511993634,1cyclictest0-21swapper/312:10:593
413511993634,1cyclictest0-21swapper/309:08:593
413511993633,2cyclictest0-21swapper/311:44:593
41351199360,35cyclictest0-21swapper/312:07:593
41351199360,35cyclictest0-21swapper/311:29:593
41351199360,35cyclictest0-21swapper/311:14:583
41351199360,35cyclictest0-21swapper/310:39:553
41351199360,35cyclictest0-21swapper/309:32:593
41351199360,35cyclictest0-21swapper/307:41:583
41351199360,1cyclictest0-21swapper/309:18:003
41351199360,1cyclictest0-21swapper/308:01:593
413507993633,2cyclictest0-21swapper/208:45:002
413507993633,1cyclictest0-21swapper/210:05:002
413498993629,5cyclictest714-21Xorg08:14:590
413511993533,1cyclictest0-21swapper/310:49:563
413511993533,1cyclictest0-21swapper/310:49:563
413507993532,2cyclictest0-21swapper/211:22:592
413498993529,4cyclictest714-21Xorg08:32:590
413511993432,1cyclictest0-21swapper/307:11:003
413507993432,1cyclictest0-21swapper/209:54:592
413507993431,2cyclictest0-21swapper/209:06:592
413507993431,2cyclictest0-21swapper/207:10:592
413498993430,3cyclictest431927-21needreboot08:05:200
413498993430,2cyclictest498311-21apt-get11:30:140
413498993427,6cyclictest443152-21apt-get08:40:130
413498993426,5cyclictest0-21swapper/008:50:590
413511993331,1cyclictest0-21swapper/309:24:593
413511993331,1cyclictest0-21swapper/309:04:553
413511993331,1cyclictest0-21swapper/309:04:553
413511993330,2cyclictest0-21swapper/311:48:593
41351199330,30cyclictest0-21swapper/309:35:593
413507993331,1cyclictest351rcuc/208:48:592
41349899336,25cyclictest714-21Xorg12:25:590
413498993327,4cyclictest472057-21apt-get10:10:130
413498993326,5cyclictest714-21Xorg11:23:590
413507993229,2cyclictest0-21swapper/212:25:002
413507993229,2cyclictest0-21swapper/211:59:562
413507993229,2cyclictest0-21swapper/211:59:552
413507993228,2cyclictest0-21swapper/207:36:002
41350799320,28cyclictest0-21swapper/211:15:022
413511993129,1cyclictest0-21swapper/311:39:563
413511993129,1cyclictest0-21swapper/311:30:593
413511993129,1cyclictest0-21swapper/310:19:553
413511993129,1cyclictest0-21swapper/309:57:593
413511993129,1cyclictest0-21swapper/309:10:593
413511993129,1cyclictest0-21swapper/307:35:003
413511993129,1cyclictest0-21swapper/307:25:593
413507993128,2cyclictest0-21swapper/212:34:002
413507993128,2cyclictest0-21swapper/209:10:592
413507993127,2cyclictest0-21swapper/209:49:552
413498993127,3cyclictest427777-21perf07:55:010
41349899310,30cyclictest0-21swapper/011:45:010
413511993028,1cyclictest0-21swapper/308:49:553
413511993027,2cyclictest0-21swapper/310:05:143
41351199300,2cyclictest0-21swapper/310:25:143
41351199300,26cyclictest0-21swapper/307:20:123
413507993028,1cyclictest0-21swapper/208:00:002
413507993027,2cyclictest0-21swapper/212:35:022
413507993027,2cyclictest0-21swapper/212:17:002
413507993027,2cyclictest0-21swapper/211:07:002
413507993027,2cyclictest0-21swapper/210:30:142
413507993027,2cyclictest0-21swapper/209:42:592
41350799300,28cyclictest0-21swapper/211:30:142
41350799300,27cyclictest0-21swapper/208:50:022
41350799300,27cyclictest0-21swapper/208:05:132
41350799300,27cyclictest0-21swapper/208:00:122
41349899306,5cyclictest449396-21grep08:55:260
413498993026,3cyclictest470909-21hwlatdetect10:05:170
413511992928,1cyclictest0-21swapper/312:03:593
413511992927,1cyclictest0-21swapper/307:47:593
413511992926,2cyclictest0-21swapper/311:05:133
413511992925,3cyclictest0-21swapper/308:50:033
413511992925,1cyclictest0-21swapper/312:35:023
413511992924,4cyclictest432563-21turbostat08:10:013
41351199290,28cyclictest0-21swapper/308:15:033
41351199290,27cyclictest507886-21turbostat12:00:013
41351199290,27cyclictest507886-21turbostat12:00:013
41351199290,27cyclictest0-21swapper/312:15:013
41351199290,27cyclictest0-21swapper/308:10:143
41351199290,26cyclictest0-21swapper/311:20:123
413507992926,2cyclictest0-21swapper/211:03:592
413507992926,2cyclictest0-21swapper/210:40:142
413507992926,2cyclictest0-21swapper/210:10:132
413507992926,2cyclictest0-21swapper/208:20:132
41350799290,28cyclictest0-21swapper/208:30:142
41350799290,27cyclictest0-21swapper/212:00:112
41350799290,27cyclictest0-21swapper/211:45:022
41350799290,27cyclictest0-21swapper/211:25:142
41350799290,27cyclictest0-21swapper/210:15:592
413498992926,2cyclictest714-21Xorg07:30:590
231999290,3rtkit-daemon2318-21rtkit-daemon10:17:350
4577091280,6ptp4l441ktimers/309:55:003
413511992825,2cyclictest0-21swapper/310:55:593
413511992825,2cyclictest0-21swapper/308:55:153
41351199280,2cyclictest0-21swapper/308:25:033
41351199280,27cyclictest0-21swapper/311:00:023
41351199280,26cyclictest0-21swapper/310:30:023
41351199280,26cyclictest0-21swapper/308:35:023
413507992825,2cyclictest0-21swapper/210:38:592
413507992825,2cyclictest0-21swapper/208:15:022
41350799280,2cyclictest0-21swapper/211:40:132
41350799280,2cyclictest0-21swapper/210:45:132
41350799280,2cyclictest0-21swapper/210:45:122
41350799280,2cyclictest0-21swapper/208:25:012
41350799280,26cyclictest0-21swapper/210:20:132
41350799280,26cyclictest0-21swapper/210:20:132
4577091270,5ptp4l441ktimers/308:00:013
413511992725,1cyclictest0-21swapper/310:44:583
41351199270,26cyclictest0-21swapper/310:00:593
41350799270,25cyclictest0-21swapper/209:30:592
41350799270,24cyclictest0-21swapper/210:29:542
4577091260,4ptp4l441ktimers/307:54:563
413511992624,1cyclictest0-21swapper/308:22:593
41351199260,24cyclictest0-21swapper/311:15:033
413507992623,2cyclictest0-21swapper/210:08:592
413507992623,2cyclictest0-21swapper/209:25:592
413507992623,2cyclictest0-21swapper/207:46:592
413507992623,2cyclictest0-21swapper/207:21:002
41350799260,24cyclictest0-21swapper/208:57:592
41350799260,1cyclictest0-21swapper/212:08:582
413498992621,4cyclictest467272-21apt-get09:55:120
4577091250,4ptp4l61490irq/134-eno1-TxRx-010:15:013
4577091250,4ptp4l441ktimers/310:24:563
4577091250,4ptp4l441ktimers/310:24:553
4577091250,4ptp4l441ktimers/308:35:013
413511992523,1cyclictest0-21swapper/307:15:133
413507992522,2cyclictest0-21swapper/209:15:132
413507992521,2cyclictest0-21swapper/207:53:592
41350799250,2cyclictest0-21swapper/212:25:582
413507992320,2cyclictest0-21swapper/207:30:582
413507992219,2cyclictest0-21swapper/207:43:582
231999220,12rtkit-daemon495-21gpm07:07:360
413507992017,2cyclictest0-21swapper/211:50:592
413507991916,2cyclictest0-21swapper/207:27:582
413507991916,2cyclictest0-21swapper/207:18:002
413507991512,2cyclictest0-21swapper/209:20:592
413507991411,2cyclictest0-21swapper/210:51:002
41350799139,2cyclictest0-21swapper/211:14:562
413507991210,1cyclictest0-21swapper/209:59:592
4135079930,2cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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