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2026-03-12 - 22:06
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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 Thu Mar 12, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7795969910289,10cyclictest833342-21latency_hist09:55:010
779596999383,7cyclictest787991-21latency_hist07:35:020
779596999282,7cyclictest846334-21latency_hist10:35:010
779596998876,9cyclictest784573-21apt-get07:25:000
779599998782,4cyclictest870760-21kworker/u8:0+flush-179:012:10:001
779596998676,7cyclictest820354-21latency_hist09:15:000
779599998578,5cyclictest857983-21kworker/u8:1+flush-179:011:10:011
779599998475,7cyclictest859614-21kworker/u8:3+flush-179:011:40:011
779596998273,6cyclictest849526-21latency_hist10:45:010
779599998071,6cyclictest831758-21latency_hist09:50:011
779599998071,6cyclictest794376-21latency_hist07:55:011
779596998069,8cyclictest835207-21latency_hist10:00:010
779599997871,5cyclictest826714-21kworker/u8:0+flush-179:009:40:011
779599997767,7cyclictest859579-21latency_hist11:15:011
779599997668,6cyclictest868220-21kworker/u8:2+flush-179:012:15:011
779599997667,6cyclictest784605-21kworker/u8:3+flush-179:008:55:251
779599997570,4cyclictest794515-21kworker/u8:1+events_unbound08:00:021
779599997570,4cyclictest794515-21kworker/u8:1+events_unbound08:00:011
779599997261,8cyclictest880279-21latency_hist12:20:011
779599997065,4cyclictest857983-21kworker/u8:1+flush-179:011:25:241
779599997063,5cyclictest825121-21kworker/u8:1+flush-179:010:00:151
779599996961,5cyclictest784605-21kworker/u8:3+flush-179:009:15:211
779599996955,12cyclictest784605-21kworker/u8:3+events_unbound07:39:591
779599996860,6cyclictest806294-21apt-get08:30:081
779599996858,7cyclictest266-21systemd-journal10:55:011
779599996857,8cyclictest883698-21kworker/u8:1+flush-179:012:40:001
779596996860,6cyclictest856411-21latency_hist11:05:010
779599996760,5cyclictest809265-21kworker/u8:0+flush-179:008:40:211
779599996760,5cyclictest784605-21kworker/u8:3+flush-179:008:40:021
779596996752,13cyclictest266-21systemd-journal07:35:230
779599996657,6cyclictest793471-21kworker/u8:0+flush-179:008:05:201
779599996653,10cyclictest266-21systemd-journal08:25:201
779599996558,4cyclictest784605-21kworker/u8:3+events_unbound07:45:231
779599996459,4cyclictest835872-21kworker/u8:2+flush-179:010:29:561
779599996459,4cyclictest835872-21kworker/u8:2+flush-179:010:29:551
779599996458,4cyclictest826714-21kworker/u8:0+flush-179:009:40:131
779596996456,6cyclictest863029-21apt-get11:25:120
779599996358,4cyclictest797864-21kworker/u8:2+events_unbound08:15:001
779599996353,7cyclictest266-21systemd-journal11:25:001
77959999630,62cyclictest0-21swapper/108:49:591
779596996257,4cyclictest788019-21kworker/u8:2+flush-179:007:40:190
779596996254,5cyclictest847938-21latency_hist10:40:010
779596996053,5cyclictest868220-21kworker/u8:2+flush-179:012:30:220
779596996053,5cyclictest868220-21kworker/u8:2+flush-179:012:30:210
779596996048,9cyclictest870760-21kworker/u8:0+flush-179:011:55:210
779599995952,6cyclictest266-21systemd-journal07:34:201
779599995950,7cyclictest870760-21kworker/u8:0+flush-179:011:55:231
779596995846,9cyclictest266-21systemd-journal11:40:000
779596995750,5cyclictest853756-21diskstats10:55:140
779596995748,7cyclictest817440-21apt-get09:05:100
779599995550,4cyclictest868220-21kworker/u8:2+flush-179:012:34:561
779599995550,4cyclictest868220-21kworker/u8:2+flush-179:012:34:561
779599995549,5cyclictest815853-21apt-get09:00:111
779599995546,8cyclictest870760-21kworker/u8:0+flush-179:012:25:001
779596995548,5cyclictest266-21systemd-journal09:29:200
779599995449,4cyclictest857983-21kworker/u8:1+flush-179:011:54:551
779596995444,8cyclictest837053-21apt-get10:05:110
77959699540,51cyclictest714-21Xorg09:02:590
779599995345,7cyclictest777491-21kworker/u8:0+events_unbound07:20:001
779599995343,9cyclictest835872-21kworker/u8:2+flush-179:010:15:231
779599995246,4cyclictest843148-21kworker/u8:0+flush-179:010:30:161
779599995245,5cyclictest843148-21kworker/u8:0+flush-179:010:35:221
77959699520,50cyclictest714-21Xorg08:32:580
77959699520,16cyclictest714-21Xorg08:25:590
779599995144,5cyclictest857983-21kworker/u8:1+events_unbound11:45:011
779599995141,7cyclictest851111-21latency_hist10:50:011
779599995141,7cyclictest851111-21latency_hist10:50:011
779596995146,3cyclictest870760-21kworker/u8:0+flush-179:012:05:120
779596995144,5cyclictest882133-21latency_hist12:25:020
779596995144,5cyclictest857983-21kworker/u8:1+flush-179:011:30:220
4577091510,14ptp4l441ktimers/307:10:013
77960599500,12cyclictest810831-21turbostat08:49:553
77959999500,49cyclictest1-21systemd10:15:001
779596995043,6cyclictest859567-21kworker/u8:0+flush-179:011:20:220
779596995038,9cyclictest781118-21apt-get07:15:010
779596995038,9cyclictest781118-21apt-get07:15:000
779599994945,3cyclictest857983-21kworker/u8:1+flush-179:011:45:211
779599994944,4cyclictest868220-21kworker/u8:2+flush-179:012:29:551
779599994942,4cyclictest794515-21kworker/u8:1+flush-179:008:00:161
779599994940,7cyclictest855077-21apt-get11:00:101
779599994843,4cyclictest846383-21kworker/u8:1+flush-179:010:54:551
779599994738,6cyclictest777491-21kworker/u8:0+flush-179:007:10:211
779599994738,6cyclictest777491-21kworker/u8:0+flush-179:007:10:211
779599994737,7cyclictest777491-21kworker/u8:0+flush-179:007:25:211
779596994742,3cyclictest851402-21apt-key10:50:020
779596994742,3cyclictest851402-21apt-key10:50:010
779596994740,6cyclictest835872-21kworker/u8:2+flush-179:010:25:010
779599994641,4cyclictest825137-21cron09:30:001
779599994641,4cyclictest784605-21kworker/u8:3+flush-179:009:10:171
779599994638,6cyclictest857983-21kworker/u8:1+flush-179:011:30:101
779599994638,6cyclictest784605-21kworker/u8:3+flush-179:008:15:211
779596994640,4cyclictest813995-21turbostat08:59:550
779596994638,6cyclictest839967-21latency_hist10:15:000
779596994637,6cyclictest825121-21kworker/u8:1+flush-179:010:05:010
779596994628,16cyclictest870741-21perf11:50:000
779599994540,4cyclictest784605-21kworker/u8:3+events_unbound09:20:231
779596994537,5cyclictest784605-21kworker/u8:3+flush-179:008:50:000
779599994440,3cyclictest784605-21kworker/u8:3+flush-179:009:30:191
779596994438,4cyclictest830174-21latency_hist09:45:010
779596994435,7cyclictest781620-21apt-get07:15:110
77960199430,41cyclictest0-21swapper/209:19:552
779599994338,4cyclictest809265-21kworker/u8:0+flush-179:008:50:201
779599994334,7cyclictest843148-21kworker/u8:0+events_unbound10:40:241
779605994239,2cyclictest0-21swapper/308:59:553
77959699421,22cyclictest796216-21cron08:00:000
77959699421,22cyclictest796216-21cron08:00:000
779605994127,13cyclictest870735-21turbostat11:50:003
77960599410,1cyclictest0-21swapper/309:02:593
77960599410,1cyclictest0-21swapper/308:32:583
779599994135,5cyclictest859614-21kworker/u8:3+flush-179:011:15:211
779596994124,16cyclictest0-21swapper/011:40:130
77959699410,25cyclictest860202-21tune2fs11:15:140
779599994036,3cyclictest809265-21kworker/u8:0+events_unbound09:05:181
779599994035,4cyclictest778042-21kworker/u8:2+flush-179:007:20:151
779596994034,5cyclictest777491-21kworker/u8:0+events_unbound07:30:010
779596994033,5cyclictest266-21systemd-journal08:45:020
77959699401,2cyclictest714-21Xorg08:14:590
77959699400,37cyclictest714-21Xorg12:01:590
77959699400,2cyclictest0-21swapper/007:54:000
77960599390,37cyclictest796237-21turbostat08:00:003
77960599390,37cyclictest796237-21turbostat08:00:003
77960599390,2cyclictest0-21swapper/311:43:593
779601993936,2cyclictest0-21swapper/208:32:592
77960199390,36cyclictest0-21swapper/212:19:592
77960199390,36cyclictest0-21swapper/210:45:592
77960199390,36cyclictest0-21swapper/210:45:582
77960199390,35cyclictest0-21swapper/207:35:002
779596993927,10cyclictest0-21swapper/010:20:000
77959699391,37cyclictest0-21swapper/008:19:590
77959699391,2cyclictest714-21Xorg12:15:580
77959699390,37cyclictest714-21Xorg12:12:580
77959699390,37cyclictest714-21Xorg10:55:000
77959699390,37cyclictest714-21Xorg07:45:590
77959699390,26cyclictest882362-21/usr/sbin/munin12:25:260
779601993835,2cyclictest0-21swapper/209:02:592
77960199380,36cyclictest0-21swapper/212:36:592
77960199380,36cyclictest0-21swapper/207:46:592
77960199380,35cyclictest0-21swapper/210:44:552
779599993835,2cyclictest714-21Xorg07:41:591
779596993827,9cyclictest796784-21diskstats08:00:150
77959699380,23cyclictest886379-21/usr/sbin/munin12:35:210
779605993734,2cyclictest0-21swapper/310:32:593
77960599370,36cyclictest0-21swapper/307:21:583
77960599370,2cyclictest0-21swapper/307:54:003
77960599370,1cyclictest0-21swapper/310:04:563
77960199370,2cyclictest0-21swapper/212:26:592
779599993731,5cyclictest833321-21kworker/u8:0+flush-179:009:55:251
779596993733,2cyclictest0-21swapper/009:30:590
779596993712,22cyclictest510-21rs:main0
77959699371,21cyclictest908065-21snmpd09:24:340
77959699370,2cyclictest211irq_work/010:27:000
77959699370,2cyclictest211irq_work/010:26:590
77959699370,21cyclictest821292-21/usr/sbin/munin09:15:170
779605993634,1cyclictest0-21swapper/311:01:593
77960599360,35cyclictest0-21swapper/312:12:583
77960599360,2cyclictest0-21swapper/308:19:593
77960599360,1cyclictest0-21swapper/309:08:593
779601993633,2cyclictest0-21swapper/208:49:002
779601993632,2cyclictest0-21swapper/209:26:592
779599993631,4cyclictest825121-21kworker/u8:1+events_unbound09:50:181
77960599350,34cyclictest0-21swapper/312:01:593
779601993533,1cyclictest0-21swapper/208:15:002
779601993532,2cyclictest0-21swapper/210:27:002
779601993532,2cyclictest0-21swapper/210:27:002
779601993532,2cyclictest0-21swapper/210:04:562
779601993532,2cyclictest0-21swapper/209:11:592
779601993532,2cyclictest0-21swapper/208:39:552
779601993532,2cyclictest0-21swapper/208:19:592
779599993530,3cyclictest784605-21kworker/u8:3+events_unbound08:20:231
779599993529,5cyclictest835872-21kworker/u8:2+events_unbound10:20:241
779596993532,2cyclictest714-21Xorg11:53:590
779596993529,5cyclictest784605-21kworker/u8:3+flush-179:008:20:210
779605993432,1cyclictest0-21swapper/307:34:563
779601993431,2cyclictest0-21swapper/211:43:582
779601993431,2cyclictest0-21swapper/209:09:002
779601993431,2cyclictest0-21swapper/207:53:592
779601993430,2cyclictest0-21swapper/208:59:552
779599993429,4cyclictest870760-21kworker/u8:0+events_unbound12:00:221
779599993428,5cyclictest524-21gmain10:05:131
779596993422,10cyclictest0-21swapper/008:52:590
779605993331,1cyclictest0-21swapper/309:30:593
779605993331,1cyclictest0-21swapper/308:36:593
779605993330,2cyclictest0-21swapper/311:53:593
779601993330,2cyclictest0-21swapper/212:12:592
779601993330,2cyclictest0-21swapper/212:01:582
779601993330,2cyclictest0-21swapper/207:21:592
779601993330,1cyclictest0-21swapper/208:00:012
779601993330,1cyclictest0-21swapper/208:00:002
779605993228,2cyclictest0-21swapper/310:48:593
779605993228,2cyclictest0-21swapper/310:48:583
779605993226,4cyclictest883719-21turbostat12:30:013
779605993225,6cyclictest0-21swapper/310:29:563
779605993225,6cyclictest0-21swapper/310:29:553
77960599320,1cyclictest0-21swapper/307:15:043
779601993227,2cyclictest0-21swapper/207:15:032
779596993218,12cyclictest0-21swapper/009:50:010
779605993129,1cyclictest0-21swapper/311:59:543
77960599310,28cyclictest0-21swapper/311:15:113
779601993128,2cyclictest0-21swapper/210:33:592
779596993127,3cyclictest828327-21cut09:40:000
779596993123,5cyclictest266-21systemd-journal08:10:000
77959699310,29cyclictest0-21swapper/011:10:120
77959699310,19cyclictest908065-21snmpd11:05:230
779605993024,5cyclictest830183-21turbostat09:45:003
77960599300,27cyclictest0-21swapper/307:25:023
77960599300,1cyclictest0-21swapper/309:23:593
779601993027,2cyclictest0-21swapper/207:43:002
779601993027,2cyclictest0-21swapper/207:25:022
779605992927,1cyclictest0-21swapper/312:36:003
779605992927,1cyclictest0-21swapper/308:25:133
779605992927,1cyclictest0-21swapper/308:22:003
779605992923,4cyclictest821952-21turbostat09:20:003
77960599290,27cyclictest839980-21turbostat10:15:003
77960599290,27cyclictest0-21swapper/310:55:023
77960599290,27cyclictest0-21swapper/310:05:123
779601992927,1cyclictest0-21swapper/212:35:002
779601992927,1cyclictest0-21swapper/212:34:592
779601992926,2cyclictest0-21swapper/211:01:592
779601992926,2cyclictest0-21swapper/210:05:122
77960199290,2cyclictest0-21swapper/209:55:132
77960199290,27cyclictest0-21swapper/211:54:002
77960199290,27cyclictest0-21swapper/211:15:122
77960199290,27cyclictest0-21swapper/209:30:112
77960199290,27cyclictest0-21swapper/209:20:122
77960199290,27cyclictest0-21swapper/208:25:132
77960199290,26cyclictest0-21swapper/210:10:122
77959699292,23cyclictest779597-21latency_hist07:10:010
4577091290,7ptp4l441ktimers/310:24:563
4577091290,6ptp4l441ktimers/310:40:013
77960599280,27cyclictest0-21swapper/311:10:123
77960599280,27cyclictest0-21swapper/309:55:133
779601992825,2cyclictest0-21swapper/210:55:022
77960199280,27cyclictest0-21swapper/211:45:122
77960199280,27cyclictest0-21swapper/209:40:122
4577091280,7ptp4l441ktimers/308:10:013
4577091280,6ptp4l441ktimers/312:34:553
4577091280,6ptp4l441ktimers/312:34:553
4577091280,6ptp4l441ktimers/311:40:003
4577091280,6ptp4l441ktimers/311:34:563
4577091280,6ptp4l441ktimers/310:19:553
4577091280,6ptp4l441ktimers/309:55:003
4577091280,6ptp4l441ktimers/309:49:553
4577091280,6ptp4l441ktimers/307:50:003
4577091280,6ptp4l441ktimers/307:44:543
779605992725,1cyclictest0-21swapper/311:08:003
779605992724,2cyclictest0-21swapper/308:43:003
77960599270,1cyclictest0-21swapper/311:25:133
4577091270,7ptp4l61490irq/134-eno1-TxRx-008:04:593
4577091270,6ptp4l61490irq/134-eno1-TxRx-012:24:563
4577091270,6ptp4l61490irq/134-eno1-TxRx-008:54:553
4577091270,6ptp4l441ktimers/310:54:563
4577091270,6ptp4l441ktimers/310:45:013
4577091270,6ptp4l441ktimers/308:15:003
4577091270,5ptp4l441ktimers/309:29:553
779601992624,1cyclictest0-21swapper/211:25:132
779601992623,2cyclictest0-21swapper/208:03:582
77960199260,2cyclictest0-21swapper/209:52:592
77960199260,24cyclictest0-21swapper/210:37:592
77960199260,24cyclictest0-21swapper/208:43:592
77960199260,24cyclictest0-21swapper/207:39:562
77960199260,24cyclictest0-21swapper/207:10:282
77960199260,24cyclictest0-21swapper/207:10:272
4577091260,5ptp4l61490irq/134-eno1-TxRx-009:14:563
4577091260,4ptp4l441ktimers/311:24:553
77960599250,24cyclictest0-21swapper/307:10:023
77960599250,24cyclictest0-21swapper/307:10:023
779601992522,2cyclictest0-21swapper/211:10:122
779601992522,2cyclictest0-21swapper/209:35:592
77960199250,2cyclictest0-21swapper/211:06:592
77960199250,1cyclictest0-21swapper/210:25:002
4577091250,4ptp4l61490irq/134-eno1-TxRx-009:39:563
4577091250,4ptp4l441ktimers/312:09:563
779605992422,1cyclictest0-21swapper/312:16:593
779601992421,2cyclictest0-21swapper/210:16:592
77960199240,1cyclictest0-21swapper/212:09:592
77960199240,1cyclictest0-21swapper/210:55:002
779601992320,2cyclictest0-21swapper/211:59:542
779601992320,2cyclictest0-21swapper/208:07:592
779601992218,2cyclictest0-21swapper/208:21:592
231999210,12rtkit-daemon495-21gpm07:08:481
779605992018,1cyclictest0-21swapper/307:39:003
779601991917,1cyclictest0-21swapper/211:35:002
779601991814,2cyclictest0-21swapper/208:50:592
779601991714,2cyclictest0-21swapper/212:20:592
779601991714,2cyclictest0-21swapper/211:39:002
779601991512,2cyclictest0-21swapper/211:20:122
779601991511,2cyclictest0-21swapper/209:46:592
7796019952,1cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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