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2026-03-10 - 00:06
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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 792 highest latencies:
System rackeslot6.osadl.org (updated Mon Mar 09, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
82606099113102,8cyclictest890701-21latency_hist10:30:011
8260569911192,11cyclictest266-21systemd-journal07:50:000
8260609910190,8cyclictest842198-21latency_hist08:00:011
826056999890,6cyclictest266-21systemd-journal08:35:000
826056999791,4cyclictest930744-21apt-get12:35:030
826060999484,7cyclictest859963-21apt-get08:55:001
826060999282,7cyclictest861795-21latency_hist09:00:011
826060999079,9cyclictest932584-21latency_hist12:40:021
826060999079,8cyclictest877712-21latency_hist09:50:001
826056998679,5cyclictest921438-21/usr/sbin/munin12:05:230
826056998275,5cyclictest920139-21kworker/u8:0+flush-179:012:05:000
826056998272,8cyclictest840594-21latency_hist07:55:000
826056998272,7cyclictest908710-21/usr/sbin/munin11:25:250
826060997866,9cyclictest881143-21latency_hist10:00:021
826056997770,5cyclictest911630-21kworker/u8:2+events_unbound12:00:000
826056997567,6cyclictest908469-21latency_hist11:25:010
826056997462,9cyclictest266-21systemd-journal09:05:000
826060997264,6cyclictest843792-21latency_hist08:05:001
826056997262,7cyclictest510-21rs:main0
826060996863,3cyclictest833934-21kworker/u8:2+flush-179:007:50:231
826060996859,7cyclictest876129-21latency_hist09:45:011
826056996860,6cyclictest915074-21/usr/sbin/munin11:45:230
826056996858,8cyclictest852036-21kworker/u8:2+flush-179:008:40:210
826064996764,1cyclictest0-21swapper/308:31:003
826064996662,2cyclictest0-21swapper/309:50:583
826060996658,5cyclictest872548-21kworker/u8:0+flush-179:009:35:011
826056996560,4cyclictest900293-21kworker/u8:3+flush-179:011:40:250
826056996461,2cyclictest0-21swapper/009:28:000
826056996458,4cyclictest869809-21kworker/u8:3+flush-179:010:05:210
826056996456,7cyclictest852036-21kworker/u8:2+events_unbound08:55:020
826056996454,7cyclictest900293-21kworker/u8:3+flush-179:011:30:220
826060996154,5cyclictest868173-21latency_hist09:20:021
826060995949,8cyclictest829400-21apt-get07:20:111
826060995946,12cyclictest824918-21kworker/u8:1+flush-179:007:14:551
826056995945,10cyclictest266-21systemd-journal09:40:000
826060995850,6cyclictest266-21systemd-journal12:05:571
826060995848,8cyclictest847477-21apt-get08:15:111
826060995751,5cyclictest881165-21turbostat10:04:551
826060995750,5cyclictest852036-21kworker/u8:2+flush-179:009:25:151
826060995750,5cyclictest835840-21apt-get07:40:121
826056995746,8cyclictest824918-21kworker/u8:1+flush-179:007:35:210
826056995547,6cyclictest832313-21latency_hist07:30:010
826060995448,4cyclictest903945-21apt-get11:10:131
826060995438,6cyclictest906878-21latency_hist11:20:011
826056995449,3cyclictest841668-21kworker/u8:3+flush-179:008:10:230
826056995446,6cyclictest877748-21kworker/u8:1+flush-179:010:10:260
826056995446,5cyclictest877748-21kworker/u8:1+events_unbound10:35:240
826056995445,6cyclictest924411-21kworker/u8:2+flush-179:012:30:000
826060995344,7cyclictest930744-21apt-get12:34:591
826056995346,5cyclictest877748-21kworker/u8:1+flush-179:011:05:000
826056995344,7cyclictest845979-21kworker/u8:1+flush-179:008:30:010
826064995250,1cyclictest0-21swapper/308:11:593
82606099511,47cyclictest918041-21munin-run11:55:001
826056995146,3cyclictest877748-21kworker/u8:1+flush-179:010:25:000
826056995143,6cyclictest833899-21latency_hist07:35:010
826056995140,7cyclictest866604-21kworker/u8:1+events_unbound09:30:190
826060995040,7cyclictest266-21systemd-journal10:33:091
826060995040,7cyclictest266-21systemd-journal10:33:081
826060995026,21cyclictest856764-21kworker/u8:0+flush-179:008:50:011
826056995044,4cyclictest828408-21journal-offline07:15:180
826060994942,5cyclictest927559-21latency_hist12:25:011
82606099490,5cyclictest900250-21turbostat11:04:561
826056994944,4cyclictest877748-21kworker/u8:1+flush-179:010:45:000
4577091490,13ptp4l61490irq/134-eno1-TxRx-007:10:003
826060994839,7cyclictest877953-21/usr/sbin/munin09:50:231
826060994740,5cyclictest866570-21latency_hist09:15:001
826056994739,6cyclictest841301-21kworker/u8:0+events_unbound07:55:240
826056994738,7cyclictest920139-21kworker/u8:0+events_unbound12:10:190
826056994734,9cyclictest266-21systemd-journal10:46:080
826064994644,1cyclictest0-21swapper/307:14:593
826060994639,6cyclictest877748-21kworker/u8:1+flush-179:010:50:261
826056994640,4cyclictest929403-21apt-get12:30:100
826056994636,7cyclictest879298-21latency_hist09:55:000
826056994537,6cyclictest841301-21kworker/u8:0+flush-179:008:05:140
826056994537,6cyclictest841301-21kworker/u8:0+flush-179:008:05:130
826056994532,10cyclictest266-21systemd-journal11:40:000
82605699451,38cyclictest830709-21kworker/0:0+events09:05:130
826060994439,4cyclictest714-21Xorg10:46:581
826060994438,4cyclictest900293-21kworker/u8:3+flush-179:011:50:011
826060994433,9cyclictest877748-21kworker/u8:1+flush-179:010:15:211
826056994438,5cyclictest884319-21kworker/u8:0+flush-179:010:29:550
826056994433,9cyclictest877719-21cron09:49:590
82606199430,40cyclictest0-21swapper/210:54:552
826060994316,11cyclictest714-21Xorg08:13:591
826060994314,1cyclictest837177-21apt-get07:45:031
826056994338,4cyclictest900293-21kworker/u8:3+flush-179:011:10:010
826060994236,5cyclictest900293-21kworker/u8:3+events_unbound12:20:001
826056994231,8cyclictest911630-21kworker/u8:2+flush-179:011:50:200
82605699420,40cyclictest842219-21turbostat08:04:560
82606499410,39cyclictest859956-21turbostat08:55:013
826060994137,3cyclictest1-21systemd10:24:081
826060994134,6cyclictest905701-21kworker/u8:1+flush-179:011:20:131
826060994116,9cyclictest714-21Xorg08:05:591
826060994116,9cyclictest714-21Xorg08:05:591
826060994113,15cyclictest852772-21if_err_enp2s008:30:141
82606099410,39cyclictest919615-21turbostat12:04:551
826056994135,4cyclictest191rcuc/012:20:000
82605699411,38cyclictest495-21gpm09:55:030
826064994034,5cyclictest893893-21turbostat10:39:593
826064994033,5cyclictest832323-21turbostat07:30:003
82606499400,39cyclictest837172-21turbostat07:45:013
82606499400,38cyclictest918006-21turbostat11:55:003
82606499400,38cyclictest889125-21turbostat10:25:013
826060994035,3cyclictest835604-21munin-run07:40:011
826060994016,9cyclictest714-21Xorg11:43:591
826060994016,8cyclictest714-21Xorg12:12:591
826060994016,8cyclictest714-21Xorg10:38:591
826060994016,8cyclictest714-21Xorg07:17:591
826060994011,15cyclictest835524-1kworker/1:0H+mmc_complete08:30:021
82606099400,38cyclictest929152-21idleruntime-cro12:30:001
82606099400,38cyclictest714-21Xorg10:11:001
82606499390,4cyclictest895485-21turbostat10:45:003
82606499390,38cyclictest863409-21turbostat09:05:003
82606499390,1cyclictest0-21swapper/311:59:593
826061993936,2cyclictest0-21swapper/212:08:592
82606199390,36cyclictest0-21swapper/207:18:592
826060993916,8cyclictest714-21Xorg07:27:591
826060993915,9cyclictest869732-21users09:20:251
826060993915,9cyclictest862865-21ntp_states09:00:221
826060993915,10cyclictest714-21Xorg09:40:001
826060993910,16cyclictest0-21swapper/108:35:211
82606099390,2cyclictest714-21Xorg11:06:591
826056993936,2cyclictest0-21swapper/009:21:590
826056993936,2cyclictest0-21swapper/009:10:590
826056993931,6cyclictest897109-21kworker/u8:0+events_unbound10:55:150
826056993931,6cyclictest822972-21kworker/u8:0+events_unbound07:40:170
826056993930,7cyclictest825920-21latency_hist07:10:020
826056993925,10cyclictest266-21systemd-journal09:19:550
826064993833,4cyclictest905289-21turbostat11:15:003
826064993832,5cyclictest865004-21turbostat09:10:013
826060993815,8cyclictest833938-21munin-run07:35:011
826056993833,4cyclictest852036-21kworker/u8:2+flush-179:008:50:160
826056993832,4cyclictest0-21swapper/010:20:010
826056993830,6cyclictest884319-21kworker/u8:0+flush-179:010:30:160
826056993830,6cyclictest884319-21kworker/u8:0+flush-179:010:30:150
82605699380,37cyclictest0-21swapper/008:48:000
826064993734,2cyclictest0-21swapper/309:33:583
826064993734,2cyclictest0-21swapper/307:21:593
826064993729,6cyclictest898658-21turbostat10:55:013
826061993734,2cyclictest0-21swapper/209:00:002
826061993733,2cyclictest0-21swapper/209:53:002
826060993715,8cyclictest714-21Xorg11:29:591
82606099370,1cyclictest0-21swapper/109:07:581
826056993732,4cyclictest903700-21turbostat11:14:550
826056993725,9cyclictest829686-21diskstats07:20:150
826064993630,5cyclictest856794-21turbostat08:44:593
82606499360,35cyclictest0-21swapper/311:45:593
82606499360,35cyclictest0-21swapper/308:08:593
82606499360,35cyclictest0-21swapper/308:08:583
82606199360,1cyclictest0-21swapper/211:25:002
82606199360,1cyclictest0-21swapper/210:30:582
82606199360,1cyclictest0-21swapper/210:30:582
82606199360,1cyclictest0-21swapper/208:45:592
82606199360,1cyclictest0-21swapper/208:09:562
82606199360,1cyclictest0-21swapper/208:09:562
826060993631,4cyclictest0-21swapper/111:37:001
826060993628,5cyclictest849086-21apt-get08:20:121
826060993613,8cyclictest908065-21snmpd08:42:501
826056993630,4cyclictest898687-21systemd-run10:55:000
826056993629,5cyclictest900293-21kworker/u8:3+flush-179:012:20:130
826056993628,6cyclictest822972-21kworker/u8:0+events_unbound07:10:230
82605699360,1cyclictest0-21swapper/008:36:580
826064993533,1cyclictest0-21swapper/311:09:003
826064993533,1cyclictest0-21swapper/307:57:593
826064993532,2cyclictest0-21swapper/308:26:593
826061993532,2cyclictest0-21swapper/207:14:552
826064993427,6cyclictest835587-21turbostat07:40:013
826061993431,2cyclictest0-21swapper/212:11:592
826060993415,17cyclictest0-21swapper/110:55:161
826056993426,6cyclictest872548-21kworker/u8:0+events_unbound10:00:240
4577091340,3ptp4l441ktimers/308:15:023
826064993327,5cyclictest868178-21turbostat09:20:003
826061993330,2cyclictest0-21swapper/209:02:582
826061993330,2cyclictest0-21swapper/208:13:592
826060993314,5cyclictest911025-21cut11:30:201
826056993327,4cyclictest714-21Xorg11:18:590
826056993323,9cyclictest874802-21apt-get09:40:120
826064993230,1cyclictest0-21swapper/310:45:583
826064993230,1cyclictest0-21swapper/309:42:003
826064993227,4cyclictest855188-21turbostat08:39:593
826064993227,3cyclictest0-21swapper/308:55:023
826061993229,2cyclictest0-21swapper/212:02:592
826061993229,2cyclictest0-21swapper/209:47:592
826061993229,2cyclictest0-21swapper/209:17:002
826056993226,4cyclictest850452-21systemd-run08:25:000
826064993129,1cyclictest0-21swapper/312:22:593
826064993129,1cyclictest0-21swapper/308:03:003
826061993128,2cyclictest0-21swapper/210:02:582
826060993127,3cyclictest0-21swapper/110:45:011
826060993126,4cyclictest826072-21latency_hist07:10:021
826064993028,1cyclictest0-21swapper/312:30:593
826064993028,1cyclictest0-21swapper/310:20:003
826061993027,2cyclictest0-21swapper/207:56:582
82606199300,2cyclictest0-21swapper/209:30:132
82606199300,28cyclictest0-21swapper/211:05:012
82606199300,28cyclictest0-21swapper/208:35:132
82606199300,28cyclictest0-21swapper/208:15:012
82606199300,22cyclictest0-21swapper/212:25:122
826064992927,1cyclictest0-21swapper/307:45:023
826064992926,2cyclictest0-21swapper/311:20:123
82606499290,28cyclictest0-21swapper/310:30:133
82606499290,28cyclictest0-21swapper/310:30:123
82606499290,28cyclictest0-21swapper/309:25:133
82606499290,28cyclictest0-21swapper/307:30:123
82606499290,27cyclictest0-21swapper/312:15:133
82606499290,27cyclictest0-21swapper/311:40:143
82606499290,1cyclictest0-21swapper/311:00:133
826061992926,2cyclictest0-21swapper/210:22:592
826061992925,2cyclictest0-21swapper/209:55:022
82606199290,2cyclictest0-21swapper/208:25:122
82606199290,27cyclictest0-21swapper/212:40:022
82606199290,27cyclictest0-21swapper/211:30:142
82606199290,27cyclictest0-21swapper/211:05:012
82606199290,27cyclictest0-21swapper/210:35:132
82606199290,27cyclictest0-21swapper/209:40:592
82606199290,27cyclictest0-21swapper/208:30:112
82606199290,27cyclictest0-21swapper/208:00:152
82606199290,27cyclictest0-21swapper/207:50:122
826060992924,4cyclictest883426-21gltestperf10:05:161
826060992910,7cyclictest0-21swapper/111:55:251
4577091290,7ptp4l61490irq/134-eno1-TxRx-012:10:003
4577091290,7ptp4l61490irq/134-eno1-TxRx-008:25:003
4577091290,7ptp4l441ktimers/309:40:003
4577091290,6ptp4l441ktimers/310:30:003
4577091290,6ptp4l441ktimers/309:25:023
826064992826,1cyclictest0-21swapper/309:45:133
826064992825,2cyclictest0-21swapper/312:00:143
826064992825,2cyclictest0-21swapper/311:25:153
826064992825,2cyclictest0-21swapper/310:56:593
82606499280,27cyclictest0-21swapper/312:25:123
82606499280,27cyclictest0-21swapper/309:55:013
82606499280,27cyclictest0-21swapper/309:10:143
82606499280,26cyclictest0-21swapper/311:35:133
82606499280,26cyclictest0-21swapper/311:15:143
82606499280,26cyclictest0-21swapper/310:10:133
82606499280,1cyclictest0-21swapper/312:10:123
826061992825,2cyclictest0-21swapper/208:21:592
826061992825,2cyclictest0-21swapper/207:45:022
826061992825,2cyclictest0-21swapper/207:35:132
82606199280,26cyclictest0-21swapper/209:09:582
82606199280,21cyclictest0-21swapper/212:33:592
4577091280,6ptp4l441ktimers/310:10:003
4577091280,5ptp4l441ktimers/307:54:593
82606499270,26cyclictest0-21swapper/312:35:033
82606499270,26cyclictest0-21swapper/308:45:133
826061992724,2cyclictest0-21swapper/212:20:592
82606199270,2cyclictest0-21swapper/210:40:592
4577091270,6ptp4l441ktimers/311:35:003
4577091270,6ptp4l441ktimers/307:19:553
826061992623,2cyclictest0-21swapper/211:17:592
826061992623,2cyclictest0-21swapper/210:13:592
82606199260,2cyclictest0-21swapper/212:19:562
82606199260,24cyclictest0-21swapper/210:07:002
82606199260,24cyclictest0-21swapper/208:52:592
82606199260,1cyclictest0-21swapper/211:29:592
4577091260,5ptp4l441ktimers/310:04:563
826061992523,1cyclictest0-21swapper/207:35:002
826061992522,2cyclictest0-21swapper/211:51:592
826061992522,2cyclictest0-21swapper/211:10:152
826061992521,2cyclictest0-21swapper/208:44:002
826061992521,2cyclictest0-21swapper/207:22:582
82606199250,24cyclictest0-21swapper/209:28:002
826061992321,1cyclictest0-21swapper/211:57:592
826061992321,1cyclictest0-21swapper/211:37:592
826061992320,2cyclictest0-21swapper/211:40:592
826061992320,2cyclictest0-21swapper/209:35:582
826061992220,1cyclictest0-21swapper/207:26:592
826061992218,2cyclictest0-21swapper/210:49:592
826061992119,1cyclictest0-21swapper/211:46:592
826061992118,2cyclictest0-21swapper/210:59:002
82606199210,1cyclictest0-21swapper/209:10:152
826061991614,1cyclictest0-21swapper/210:29:002
826061991613,2cyclictest0-21swapper/210:19:542
826061991613,2cyclictest0-21swapper/209:22:582
82606199129,2cyclictest0-21swapper/207:42:592
8260619930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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