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2026-01-09 - 15:52
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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 Fri Jan 09, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3519941999579,13cyclictest3526245-21apt-get07:30:001
3519941999484,7cyclictest3536121-21latency_hist08:00:001
3519939999484,8cyclictest3542495-21latency_hist08:20:010
3519939998881,5cyclictest3584415-21kworker/u8:2+flush-179:010:40:010
3519941998782,4cyclictest3556533-21kworker/u8:0+events_unbound09:05:241
3519941998366,9cyclictest3523300-21/usr/sbin/munin07:20:211
3519941997974,4cyclictest3540354-21kworker/u8:2+events_unbound08:25:221
3519941997867,8cyclictest3605318-21latency_hist11:35:011
3519939997768,7cyclictest3562094-21/usr/sbin/munin09:20:220
3519939997766,8cyclictest3624669-21latency_hist12:35:020
3519939997756,8cyclictest3568479-21apt-get09:40:110
3519939997756,8cyclictest3568479-21apt-get09:40:110
3519941997671,4cyclictest3516892-21kworker/u8:3+events_unbound07:36:561
3519941997664,6cyclictest3610128-21kworker/u8:2+events_unbound12:00:131
3519939997163,6cyclictest3619906-21latency_hist12:20:000
3519941997060,8cyclictest3597600-21kworker/u8:0+flush-179:011:40:011
3519939997062,6cyclictest3613271-21latency_hist12:00:010
3519941996964,4cyclictest3558698-21kworker/u8:3+events_unbound09:45:231
3519941996763,3cyclictest3529734-21kworker/u8:1+events_unbound08:00:171
3519941996661,4cyclictest3544383-21kworker/u8:3+events_unbound08:45:251
3519941996661,4cyclictest3529734-21kworker/u8:1+events_unbound07:50:251
351993999660,63cyclictest0-21swapper/009:31:590
4577091650,18ptp4l61490irq/134-eno1-TxRx-007:09:333
3519941996560,4cyclictest3584415-21kworker/u8:2+events_unbound10:40:261
3519941996560,4cyclictest3561818-21kworker/u8:0+events_unbound09:30:141
3519939996557,6cyclictest3534531-21latency_hist07:55:010
3519939996557,6cyclictest3523033-21kworker/u8:2+flush-179:007:35:250
3519941996459,4cyclictest3516892-21kworker/u8:3+events_unbound07:19:051
3519939996451,11cyclictest3594475-21diskstats11:00:150
3519941996359,3cyclictest3602190-21kworker/u8:3+events_unbound11:55:221
3519941996359,3cyclictest3561818-21kworker/u8:0+events_unbound09:22:541
3519941996358,4cyclictest3584415-21kworker/u8:2+events_unbound10:39:311
3519941996358,4cyclictest3579377-21kworker/u8:3+events_unbound10:55:251
3519941996353,8cyclictest3563681-21/usr/sbin/munin09:25:241
3519939996354,6cyclictest3571394-21latency_hist09:50:010
3519941996260,1cyclictest0-21swapper/108:24:591
3519939996252,7cyclictest3606920-21latency_hist11:40:000
3519941996156,4cyclictest3584415-21kworker/u8:2+events_unbound11:09:331
3519941996152,3cyclictest3579377-21kworker/u8:3+events_unbound10:20:141
3519941996110,49cyclictest3561611-21cat09:15:231
3519939996155,4cyclictest3531396-21kworker/u8:3+flush-179:007:45:190
3519939996154,4cyclictest3600561-21latency_hist11:20:010
3519941996056,3cyclictest3544331-21kworker/u8:1+events_unbound08:33:551
3519941996052,6cyclictest3532945-21latency_hist07:50:021
3519941995955,3cyclictest3614908-21kworker/u8:1+events_unbound12:19:361
3519941995955,3cyclictest3579377-21kworker/u8:3+events_unbound10:53:551
3519941995955,3cyclictest3515317-21kworker/u8:1+events_unbound07:14:561
3519941995954,4cyclictest3584415-21kworker/u8:2+events_unbound10:33:551
3519941995954,4cyclictest3563439-21kworker/u8:1+events_unbound09:41:561
3519941995954,4cyclictest3563439-21kworker/u8:1+events_unbound09:41:561
3519941995954,4cyclictest3540354-21kworker/u8:2+events_unbound08:15:541
3519941995950,3cyclictest3597600-21kworker/u8:0+events_unbound11:40:241
3519939995951,6cyclictest3557080-21latency_hist09:05:010
3519939995950,6cyclictest3579377-21kworker/u8:3+flush-179:010:50:230
3519939995948,5cyclictest3614908-21kworker/u8:1+flush-179:012:25:250
3519941995854,3cyclictest3623064-21kworker/u8:2+events_unbound12:28:551
3519941995854,3cyclictest3556533-21kworker/u8:0+events_unbound09:03:551
3519941995853,4cyclictest3574045-21kworker/u8:0+events_unbound09:57:551
3519941995848,4cyclictest3571429-21kworker/u8:2+events_unbound10:05:351
3519939995855,2cyclictest0-21swapper/011:06:590
3519939995850,5cyclictest3584379-21latency_hist10:30:010
3519939995849,7cyclictest3544331-21kworker/u8:1+flush-179:008:30:210
3519941995753,3cyclictest3597600-21kworker/u8:0+events_unbound11:17:561
3519941995753,3cyclictest3584415-21kworker/u8:2+events_unbound10:47:551
3519941995753,3cyclictest3526285-21kworker/u8:0+events_unbound07:32:551
3519941995752,4cyclictest3597600-21kworker/u8:0+events_unbound12:14:541
3519941995652,3cyclictest3523033-21kworker/u8:2+events_unbound07:40:561
3519941995651,4cyclictest3579377-21kworker/u8:3+flush-179:011:00:031
3519939995647,6cyclictest3576173-21latency_hist10:05:010
3519945995553,1cyclictest0-21swapper/309:31:593
3519941995550,4cyclictest3584415-21kworker/u8:2+events_unbound11:14:331
3519941995550,4cyclictest3574045-21kworker/u8:0+events_unbound10:26:551
3519941995449,4cyclictest3614908-21kworker/u8:1+events_unbound12:07:551
3519941995449,4cyclictest3614908-21kworker/u8:1+events_unbound12:07:551
3519941995449,4cyclictest3540354-21kworker/u8:2+events_unbound08:40:021
3519941995445,6cyclictest3580939-21latency_hist10:20:011
3519939995451,2cyclictest0-21swapper/011:30:000
3519939995444,8cyclictest3579580-21/usr/sbin/munin10:15:220
3519939995444,8cyclictest3560504-21apt-get09:15:100
3519941995346,5cyclictest3560250-21latency_hist09:15:011
3519941995345,6cyclictest3568221-21latency_hist09:40:011
3519939995344,6cyclictest3623064-21kworker/u8:2+events_unbound12:40:000
3519943995249,2cyclictest0-21swapper/209:28:592
3519943995248,2cyclictest0-21swapper/207:56:592
3519939995245,5cyclictest3555480-21latency_hist09:00:010
3519941995147,3cyclictest3571429-21kworker/u8:2+events_unbound10:02:561
3519941995147,3cyclictest3544383-21kworker/u8:3+events_unbound08:35:561
3519939995146,4cyclictest3597600-21kworker/u8:0+flush-179:012:09:560
3519939995146,4cyclictest3597600-21kworker/u8:0+flush-179:012:09:550
3519939995145,4cyclictest3584415-21kworker/u8:2+flush-179:011:20:210
3519939995143,5cyclictest3544331-21kworker/u8:1+flush-179:008:25:220
3519941995046,3cyclictest3624653-21kworker/u8:1+events_unbound12:35:561
3519941995046,3cyclictest3610128-21kworker/u8:2+events_unbound11:53:551
3519939995042,5cyclictest3602190-21kworker/u8:3+flush-179:011:45:160
3519939995042,5cyclictest3602190-21kworker/u8:3+flush-179:011:45:150
3519939994940,7cyclictest3544383-21kworker/u8:3+flush-179:008:35:180
3519941994743,3cyclictest3529734-21kworker/u8:1+events_unbound08:07:551
3519941994742,4cyclictest3623064-21kworker/u8:2+events_unbound12:33:551
3519939994743,3cyclictest3602135-21kworker/u8:1+flush-179:011:30:150
3519939994743,3cyclictest3515317-21kworker/u8:1+flush-179:007:20:150
3519939994741,4cyclictest3584415-21kworker/u8:2+events_unbound11:00:000
3519945994644,1cyclictest0-21swapper/311:06:593
3519941994641,4cyclictest3608748-21kworker/u8:1+events_unbound11:48:541
3519941994641,4cyclictest3608748-21kworker/u8:1+events_unbound11:48:531
3519939994642,3cyclictest3602190-21kworker/u8:3+flush-179:011:50:210
3519945994543,1cyclictest0-21swapper/312:26:003
3519941994540,4cyclictest3574045-21kworker/u8:0+events_unbound10:13:551
3519939994539,5cyclictest3576191-21turbostat10:09:560
3519939994437,6cyclictest3571650-21apt-get09:50:110
3519943994340,2cyclictest0-21swapper/208:25:002
3519941994336,5cyclictest3620148-21/usr/sbin/munin12:20:171
3519939994335,6cyclictest3590743-21latency_hist10:50:010
3519941994238,3cyclictest3584415-21kworker/u8:2+events_unbound11:20:551
3519939994239,2cyclictest3584415-21kworker/u8:2+events_unbound10:40:240
231999420,11rtkit-daemon2318-21rtkit-daemon12:24:110
3519941994136,4cyclictest3550747-21kworker/u8:1+events_unbound08:50:551
3519939994137,3cyclictest3579377-21kworker/u8:3+flush-179:011:10:210
3519939994136,4cyclictest3566594-21kworker/u8:2+flush-179:009:35:160
3519945994034,5cyclictest3602157-21turbostat11:25:003
351994599400,1cyclictest0-21swapper/312:13:003
3519941994036,3cyclictest3597600-21kworker/u8:0+events_unbound11:26:551
351994199401,2cyclictest714-21Xorg09:54:591
3519939994035,4cyclictest3531396-21kworker/u8:3+flush-179:008:05:190
3519939994033,5cyclictest3526285-21kworker/u8:0+flush-179:007:30:040
351993999401,37cyclictest714-21Xorg12:14:000
3519941993935,3cyclictest3553930-21kworker/u8:2+events_unbound08:55:431
3519939993935,3cyclictest3610128-21kworker/u8:2+events_unbound12:00:170
3519939993931,6cyclictest3544383-21kworker/u8:3+events_unbound08:45:180
3519939993931,6cyclictest3531396-21kworker/u8:3+events_unbound07:55:150
3519939993930,7cyclictest3557316-21/usr/sbin/munin09:05:220
351993999390,37cyclictest714-21Xorg08:54:000
3519945993732,4cyclictest3624685-21turbostat12:35:013
3519945993732,4cyclictest3579347-21turbostat10:15:003
3519943993734,2cyclictest0-21swapper/210:20:592
3519943993734,2cyclictest0-21swapper/209:30:592
3519943993734,2cyclictest0-21swapper/208:59:592
3519943993734,2cyclictest0-21swapper/208:51:592
3519943993734,2cyclictest0-21swapper/207:46:002
3519943993733,2cyclictest0-21swapper/210:02:002
351994399370,35cyclictest0-21swapper/210:46:582
3519939993733,2cyclictest0-21swapper/009:28:590
3519939993732,4cyclictest3574045-21kworker/u8:0+flush-179:010:10:210
3519939993732,4cyclictest3529734-21kworker/u8:1+events_unbound07:40:170
3519939993731,4cyclictest3553930-21kworker/u8:2+flush-179:009:10:230
3519939993730,5cyclictest3516892-21kworker/u8:3+flush-179:007:15:190
3519939993729,6cyclictest3540354-21kworker/u8:2+events_unbound08:40:140
3519939993728,5cyclictest0-21swapper/007:27:590
3519945993634,1cyclictest0-21swapper/307:50:583
3519945993631,4cyclictest3568237-21turbostat09:40:003
351994599360,35cyclictest0-21swapper/309:28:593
351994599360,35cyclictest0-21swapper/308:56:593
351994599360,35cyclictest0-21swapper/308:38:593
351994599360,1cyclictest0-21swapper/307:43:593
3519943993633,2cyclictest0-21swapper/211:12:002
351994399360,1cyclictest0-21swapper/212:05:012
351994399360,1cyclictest0-21swapper/211:22:582
3519939993630,5cyclictest3574045-21kworker/u8:0+events_unbound10:30:230
3519939993628,6cyclictest3597600-21kworker/u8:0+flush-179:011:40:150
4577091350,14ptp4l441ktimers/311:00:003
3519945993533,1cyclictest0-21swapper/310:23:583
3519945993533,1cyclictest0-21swapper/309:15:593
3519943993533,1cyclictest0-21swapper/211:35:002
3519943993532,2cyclictest0-21swapper/210:37:592
3519943993531,2cyclictest0-21swapper/212:25:592
3519943993530,3cyclictest0-21swapper/207:34:592
351994399350,1cyclictest0-21swapper/208:19:552
4577091340,3ptp4l61490irq/134-eno1-TxRx-011:55:143
3519945993432,1cyclictest0-21swapper/311:49:563
3519945993432,1cyclictest0-21swapper/311:49:553
3519945993432,1cyclictest0-21swapper/311:30:003
3519945993432,1cyclictest0-21swapper/311:04:563
3519945993432,1cyclictest0-21swapper/308:54:003
3519945993429,4cyclictest3577770-21turbostat10:10:013
3519943993431,2cyclictest0-21swapper/209:50:002
3519943993430,2cyclictest0-21swapper/207:53:582
3519941993429,4cyclictest3541019-21latency_hist08:15:011
3519939993429,4cyclictest3574045-21kworker/u8:0+events_unbound10:00:000
3519939993426,6cyclictest1-21systemd08:15:000
351993999342,30cyclictest3520121-21apt-get07:10:120
3519945993331,1cyclictest0-21swapper/310:45:003
3519945993331,1cyclictest0-21swapper/307:32:593
3519943993331,1cyclictest0-21swapper/211:04:592
3519943993330,2cyclictest0-21swapper/211:30:002
3519943993330,2cyclictest0-21swapper/210:41:592
3519945993230,1cyclictest0-21swapper/312:04:563
3519945993230,1cyclictest0-21swapper/308:29:553
3519945993230,1cyclictest0-21swapper/308:22:593
3519945993226,5cyclictest3540907-21turbostat08:15:003
3519943993230,1cyclictest0-21swapper/211:45:002
3519943993229,2cyclictest0-21swapper/212:19:552
3519943993229,2cyclictest0-21swapper/207:23:592
3519939993228,3cyclictest3579377-21kworker/u8:3+events_unbound10:20:200
3519939993228,2cyclictest714-21Xorg08:23:590
4577091310,6ptp4l441ktimers/308:09:553
3519945993129,1cyclictest0-21swapper/307:27:593
3519943993129,1cyclictest0-21swapper/210:54:592
351994399310,29cyclictest0-21swapper/207:35:592
4577091300,7ptp4l441ktimers/312:20:003
4577091300,7ptp4l441ktimers/310:05:003
3519945993029,1cyclictest0-21swapper/309:07:593
3519945993028,1cyclictest0-21swapper/309:21:593
351994599300,28cyclictest0-21swapper/309:55:123
3519943993027,2cyclictest0-21swapper/212:10:012
3519943993027,2cyclictest0-21swapper/209:02:592
3519943993027,2cyclictest0-21swapper/208:45:592
3519943993027,2cyclictest0-21swapper/208:44:552
3519943993026,2cyclictest0-21swapper/207:15:112
351994399300,28cyclictest0-21swapper/211:05:022
351994399300,28cyclictest0-21swapper/210:10:132
4577091290,6ptp4l61490irq/134-eno1-TxRx-009:45:013
4577091290,6ptp4l61490irq/134-eno1-TxRx-009:45:013
4577091290,6ptp4l441ktimers/308:45:013
3519945992927,1cyclictest0-21swapper/310:47:593
3519945992925,1cyclictest0-21swapper/307:10:123
3519943992926,2cyclictest0-21swapper/212:05:122
3519943992926,2cyclictest0-21swapper/212:05:112
3519943992925,2cyclictest0-21swapper/208:32:592
351994399290,2cyclictest0-21swapper/209:35:122
351994399290,27cyclictest0-21swapper/210:55:132
351994399290,27cyclictest0-21swapper/209:55:122
3519939992926,2cyclictest211irq_work/008:01:590
4577091280,7ptp4l61490irq/134-eno1-TxRx-012:39:553
4577091280,6ptp4l61490irq/134-eno1-TxRx-011:15:013
4577091280,6ptp4l61490irq/134-eno1-TxRx-009:15:013
4577091280,6ptp4l61490irq/134-eno1-TxRx-008:05:003
4577091280,6ptp4l61490irq/134-eno1-TxRx-007:20:013
4577091280,6ptp4l441ktimers/311:55:003
4577091280,6ptp4l441ktimers/311:45:023
4577091280,5ptp4l441ktimers/309:50:003
4577091280,5ptp4l441ktimers/309:05:013
3519945992826,1cyclictest0-21swapper/310:54:553
3519945992826,1cyclictest0-21swapper/310:35:123
3519945992826,1cyclictest0-21swapper/307:36:593
3519945992825,2cyclictest0-21swapper/311:35:103
3519945992825,2cyclictest0-21swapper/310:18:593
3519945992822,4cyclictest3621506-21turbostat12:25:003
351994599280,26cyclictest0-21swapper/310:25:033
351994599280,26cyclictest0-21swapper/308:45:123
3519943992826,1cyclictest0-21swapper/208:39:592
3519943992825,2cyclictest0-21swapper/212:30:142
3519943992824,2cyclictest0-21swapper/208:03:002
351994399280,2cyclictest0-21swapper/207:40:132
351994399280,27cyclictest0-21swapper/210:05:112
351994399280,26cyclictest0-21swapper/208:12:592
351994399280,21cyclictest0-21swapper/208:05:112
4577091270,6ptp4l61490irq/134-eno1-TxRx-012:10:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-012:10:003
4577091270,5ptp4l61490irq/134-eno1-TxRx-009:54:553
4577091270,5ptp4l441ktimers/308:19:573
4577091270,5ptp4l441ktimers/307:59:563
4577091270,5ptp4l441ktimers/307:50:003
3519945992725,1cyclictest0-21swapper/311:30:123
3519945992721,4cyclictest3600560-21turbostat11:20:003
351994599270,26cyclictest0-21swapper/308:30:593
3519943992723,2cyclictest0-21swapper/210:19:592
3519943992723,2cyclictest0-21swapper/207:29:562
351994399270,24cyclictest0-21swapper/209:16:002
4577091260,5ptp4l61490irq/134-eno1-TxRx-010:34:563
3519943992623,2cyclictest0-21swapper/211:53:592
351994399260,2cyclictest0-21swapper/211:46:592
351994399260,2cyclictest0-21swapper/211:46:592
351994399260,24cyclictest0-21swapper/207:10:152
351994399260,1cyclictest0-21swapper/209:44:592
351994399260,1cyclictest0-21swapper/209:44:592
4577091250,4ptp4l61490irq/134-eno1-TxRx-007:24:563
3519943992521,2cyclictest0-21swapper/211:38:582
3519943992422,1cyclictest0-21swapper/209:10:002
3519943992421,2cyclictest0-21swapper/211:56:592
3519943992321,1cyclictest0-21swapper/212:40:002
3519943992321,1cyclictest0-21swapper/209:24:592
3519943992321,1cyclictest0-21swapper/208:30:002
231999230,11rtkit-daemon3518560-21apt-get07:05:120
3519943992219,2cyclictest0-21swapper/212:23:592
3519943992016,2cyclictest0-21swapper/209:14:592
351994199209,10cyclictest0-21swapper/107:10:011
3519943991816,1cyclictest0-21swapper/211:19:592
3519943991412,1cyclictest0-21swapper/209:55:002
3519943991411,2cyclictest0-21swapper/210:32:592
35199439970,6cyclictest0-21swapper/210:27:052
35199439930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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