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2026-04-07 - 23:55
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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 Tue Apr 07, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1351653999485,7cyclictest1412020-21kworker/u8:1+flush-179:011:10:220
1351655999386,5cyclictest1414232-21kworker/u8:2+flush-179:010:25:201
1351655999384,6cyclictest1444329-21latency_hist11:55:011
1351655999180,7cyclictest1408559-21latency_hist10:05:011
1351655998779,6cyclictest1363214-21kworker/u8:2+flush-179:007:55:151
1351653998778,6cyclictest1375955-21latency_hist08:25:010
1351655998677,6cyclictest1412020-21kworker/u8:1+flush-179:010:30:011
1351655998576,7cyclictest1371413-21/usr/sbin/munin08:10:241
1351655998479,3cyclictest1357882-21kworker/u8:1+flush-179:007:30:211
1351655998477,5cyclictest1441196-21kworker/u8:0+events_unbound12:10:001
1351653998470,11cyclictest266-21systemd-journal09:40:020
1351655998378,3cyclictest1379149-21kworker/u8:3+flush-179:009:05:151
1351655998377,4cyclictest1385494-21kworker/u8:2+flush-179:009:00:161
1351655998376,5cyclictest1412020-21kworker/u8:1+events_unbound11:45:001
1351655998373,7cyclictest1368242-21/usr/sbin/munin08:00:251
1351655998273,7cyclictest1453890-21latency_hist12:25:011
1351655998176,3cyclictest1351487-21kworker/u8:0+flush-179:007:25:221
1351655998176,3cyclictest1351487-21kworker/u8:0+flush-179:007:25:221
1351655998172,6cyclictest1395048-21latency_hist09:25:021
1351653998171,8cyclictest1358422-21apt-get07:30:120
1351655998073,4cyclictest1412020-21kworker/u8:1+events_unbound11:25:251
1351655997972,5cyclictest1396671-21kworker/u8:2+flush-179:009:45:221
1351655997870,6cyclictest1437969-21latency_hist11:35:011
1351655997867,8cyclictest1453866-21kworker/u8:2+flush-179:012:30:211
1351655997771,5cyclictest1393415-21kworker/u8:3+flush-179:009:20:011
1351655997770,5cyclictest1371220-21kworker/u8:1+flush-179:008:25:211
1351655997671,3cyclictest1393415-21kworker/u8:3+events_unbound09:35:031
1351655997670,4cyclictest1403757-21kworker/u8:0+events_unbound09:50:161
1351655997668,5cyclictest1382355-21kworker/u8:0+flush-179:009:30:191
1351655997665,7cyclictest1426541-21kworker/u8:2+flush-179:011:15:211
1351653997668,5cyclictest1423393-21latency_hist10:50:010
1351655997569,4cyclictest1374413-21kworker/u8:2+flush-179:008:35:211
1351653997468,5cyclictest1412020-21kworker/u8:1+events_unbound10:55:270
135165399740,72cyclictest1-21systemd10:35:020
1351655997362,8cyclictest1425519-21diskstats10:55:161
1351655997163,6cyclictest1441196-21kworker/u8:0+flush-179:011:55:211
1351653997157,11cyclictest1416775-21apt-get10:30:000
1351655996958,5cyclictest1412020-21kworker/u8:1+events_unbound11:45:171
1351653996962,5cyclictest1351510-21latency_hist07:10:020
1351653996959,7cyclictest1360216-21cat07:35:000
1351655996861,5cyclictest1419276-21kworker/u8:0+events_unbound10:40:231
1351655996861,5cyclictest1403757-21kworker/u8:0+events_unbound10:20:241
1351655996861,4cyclictest1371220-21kworker/u8:1+flush-179:008:35:011
1351655996860,6cyclictest1383905-21latency_hist08:50:011
1351655996763,3cyclictest1337249-21kworker/u8:1+flush-179:007:10:211
1351655996760,4cyclictest1412020-21kworker/u8:1+flush-179:010:45:221
1351655996660,4cyclictest1426541-21kworker/u8:2+flush-179:011:05:151
1351655996659,5cyclictest1385494-21kworker/u8:2+flush-179:008:55:201
1351655996658,6cyclictest1351487-21kworker/u8:0+flush-179:007:20:141
1351655996658,5cyclictest1412020-21kworker/u8:1+flush-179:010:50:131
1351655996559,4cyclictest1363214-21kworker/u8:2+flush-179:007:45:221
1351655996557,6cyclictest1364848-21kworker/u8:3+flush-179:008:15:221
1351653996552,10cyclictest266-21systemd-journal08:34:560
1351655996457,5cyclictest1385489-21latency_hist08:55:021
1351655996355,6cyclictest1409054-21/usr/sbin/munin10:05:221
1351655996353,8cyclictest1382355-21kworker/u8:0+events_unbound09:30:001
1351655996248,6cyclictest1363214-21kworker/u8:2+events_unbound07:55:011
1351653996251,8cyclictest1412020-21kworker/u8:1+flush-179:011:50:160
1351655996155,5cyclictest1412020-21kworker/u8:1+events_unbound11:10:201
1351655996053,5cyclictest1412020-21kworker/u8:1+events_unbound10:20:001
1351655996053,4cyclictest1416823-21kworker/u8:3+events_unbound10:35:151
1351655996051,6cyclictest1351487-21kworker/u8:0+events_unbound07:35:141
1351655995952,5cyclictest1444350-21kworker/u8:3+flush-179:012:00:211
1351655995946,10cyclictest266-21systemd-journal07:45:011
1351653995951,6cyclictest1369846-21apt-get08:05:130
1351655995853,4cyclictest1393415-21kworker/u8:3+flush-179:009:40:161
1351655995852,4cyclictest1363214-21kworker/u8:2+flush-179:008:05:171
1351655995849,6cyclictest1412020-21kworker/u8:1+events_unbound11:20:251
1351653995849,6cyclictest1411985-21latency_hist10:15:000
1351655995751,5cyclictest1453925-21kworker/u8:3+events_unbound12:40:011
1351655995749,6cyclictest1351487-21kworker/u8:0+events_unbound08:20:241
1351653995748,7cyclictest1412020-21kworker/u8:1+flush-179:010:35:260
1351653995746,8cyclictest1403757-21kworker/u8:0+events_unbound10:10:010
1351655995548,5cyclictest1351487-21kworker/u8:0+flush-179:007:15:251
1351653995548,6cyclictest1436638-21apt-get11:30:110
1351653995548,5cyclictest1366398-21latency_hist07:55:010
1351653995544,9cyclictest1373014-21apt-get08:15:130
1351653995449,4cyclictest1385494-21kworker/u8:2+flush-179:008:55:160
1351655995348,4cyclictest1379149-21kworker/u8:3+events_unbound08:40:221
1351653995346,5cyclictest266-21systemd-journal11:45:420
1351655995242,7cyclictest510-21rs:main1
1351653995241,9cyclictest1447568-21kworker/u8:1+flush-179:012:20:220
1351653995142,7cyclictest1441196-21kworker/u8:0+flush-179:011:55:220
1351653995140,8cyclictest266-21systemd-journal12:30:030
1351653995040,8cyclictest1412020-21kworker/u8:1+flush-179:011:35:210
1351655994944,4cyclictest1385494-21kworker/u8:2+events_unbound09:10:241
1351653994945,3cyclictest1385494-21kworker/u8:2+flush-179:009:10:260
4577091480,13ptp4l441ktimers/307:10:013
1351655994843,3cyclictest1412023-21systemd-run10:15:011
1351653994839,7cyclictest266-21systemd-journal07:22:380
1351655994743,3cyclictest1412020-21kworker/u8:1+flush-179:011:35:211
1351653994738,7cyclictest1384141-21/usr/sbin/munin08:50:240
1351655994641,4cyclictest1412020-21kworker/u8:1+events_unbound11:00:241
1351653994641,3cyclictest1407009-21systemd-run10:00:000
1351653994636,8cyclictest1393415-21kworker/u8:3+flush-179:009:25:220
1351655994532,11cyclictest1455475-21latency_hist12:30:011
1351655994532,11cyclictest1455475-21latency_hist12:30:001
1351653994536,7cyclictest1440117-21diskstats11:40:160
1351653994336,5cyclictest1450693-21latency_hist12:15:010
1351653994237,3cyclictest1363259-21systemd-run07:45:010
1351653994236,5cyclictest1403787-21turbostat09:54:550
1351653994232,8cyclictest266-21systemd-journal09:20:000
135165399420,40cyclictest1411995-21turbostat10:19:550
1351664994134,5cyclictest1436400-21turbostat11:30:003
1351653994135,5cyclictest1353125-21turbostat07:19:550
135165399411,38cyclictest714-21Xorg08:49:580
135165399411,38cyclictest714-21Xorg08:12:580
1351659994037,2cyclictest0-21swapper/208:15:002
135165999400,1cyclictest0-21swapper/210:58:002
1351655994028,4cyclictest1444350-21kworker/u8:3+events_unbound12:15:151
135165399400,3cyclictest0-21swapper/011:02:590
1351664993936,2cyclictest0-21swapper/309:11:003
1351664993935,2cyclictest0-21swapper/311:44:593
135165999390,36cyclictest0-21swapper/208:29:002
135165999390,35cyclictest0-21swapper/208:18:592
1351655993931,6cyclictest1449345-21/usr/sbin/munin12:10:231
1351653993936,2cyclictest0-21swapper/010:40:590
1351653993935,3cyclictest1-21systemd12:30:010
1351653993935,3cyclictest1-21systemd12:30:000
1351664993833,3cyclictest1356340-21sleep07:25:003
135165999380,35cyclictest0-21swapper/210:34:552
135165399381,29cyclictest1423648-21apt-get10:50:130
135165399380,37cyclictest0-21swapper/007:48:000
1351664993734,2cyclictest0-21swapper/309:46:593
1351664993733,3cyclictest67-21kworker/3:1+events10:04:593
1351659993734,2cyclictest0-21swapper/211:45:592
135165999370,35cyclictest0-21swapper/212:38:002
135165999370,35cyclictest0-21swapper/211:26:592
135165999370,35cyclictest0-21swapper/211:16:592
135165999370,1cyclictest0-21swapper/211:31:592
1351653993734,2cyclictest14-21ksoftirqd/009:24:550
1351653993734,2cyclictest1400134-21apt-config09:40:000
1351653993733,3cyclictest714-21Xorg11:29:590
1351653993731,4cyclictest1353159-21systemd-run07:15:000
1351653993727,6cyclictest0-21swapper/008:03:000
135165399370,1cyclictest0-21swapper/008:35:590
1351664993634,1cyclictest0-21swapper/307:45:593
135166499360,35cyclictest0-21swapper/311:24:553
135166499360,35cyclictest0-21swapper/311:04:593
135166499360,35cyclictest0-21swapper/308:53:593
135166499360,35cyclictest0-21swapper/308:42:593
1351659993633,2cyclictest0-21swapper/209:35:582
1351659993633,2cyclictest0-21swapper/209:32:002
1351659993633,2cyclictest0-21swapper/208:59:562
135165999360,1cyclictest0-21swapper/210:13:592
135165999360,1cyclictest0-21swapper/207:19:002
1351653993633,2cyclictest1351650-21cyclictest11:21:590
1351653993629,6cyclictest1396671-21kworker/u8:2+events_unbound09:35:000
135165399362,4cyclictest1450948-21apt-get12:15:140
1351664993534,1cyclictest0-21swapper/311:06:003
1351664993533,1cyclictest0-21swapper/309:20:583
1351664993532,2cyclictest0-21swapper/311:51:593
1351664993531,2cyclictest0-21swapper/309:44:003
1351664993531,2cyclictest0-21swapper/308:37:593
135166499350,34cyclictest0-21swapper/311:36:593
1351659993532,2cyclictest0-21swapper/212:30:592
1351659993532,2cyclictest0-21swapper/209:59:542
1351659993532,2cyclictest0-21swapper/209:07:582
1351659993531,2cyclictest0-21swapper/207:59:592
135165999350,1cyclictest0-21swapper/209:23:592
1351653993530,3cyclictest1-21systemd10:25:000
1351653993530,2cyclictest1446192-21apt-get12:00:130
135165399350,33cyclictest714-21Xorg12:36:590
135165399350,33cyclictest0-21swapper/007:55:110
1351664993432,1cyclictest0-21swapper/309:36:583
1351664993432,1cyclictest0-21swapper/309:03:583
1351664993432,1cyclictest0-21swapper/308:24:593
1351664993432,1cyclictest0-21swapper/308:06:593
1351664993431,2cyclictest0-21swapper/307:44:593
135166499340,1cyclictest0-21swapper/309:50:583
1351659993431,2cyclictest0-21swapper/212:18:592
1351659993431,2cyclictest0-21swapper/212:00:592
1351659993431,2cyclictest0-21swapper/211:54:552
1351659993431,2cyclictest0-21swapper/209:50:592
1351659993431,2cyclictest0-21swapper/209:49:562
1351664993331,1cyclictest0-21swapper/310:12:593
1351659993329,2cyclictest0-21swapper/211:24:552
135165999330,29cyclictest0-21swapper/209:40:032
1351653993328,3cyclictest1356575-21apt-get07:25:130
1351653993328,3cyclictest1356575-21apt-get07:25:120
1351664993230,1cyclictest0-21swapper/312:29:553
1351664993230,1cyclictest0-21swapper/312:29:543
1351664993229,2cyclictest0-21swapper/311:31:593
1351664993229,2cyclictest0-21swapper/309:56:593
1351659993229,2cyclictest0-21swapper/211:36:592
1351659993229,2cyclictest0-21swapper/208:43:002
1351659993229,2cyclictest0-21swapper/207:38:592
1351653993226,5cyclictest714-21Xorg08:44:590
1351653993226,5cyclictest0-21swapper/009:05:110
1351653993224,6cyclictest1429768-21apt-get11:10:010
1351664993129,1cyclictest0-21swapper/307:25:593
1351664993129,1cyclictest0-21swapper/307:25:583
1351664993128,2cyclictest0-21swapper/309:07:593
1351659993129,1cyclictest0-21swapper/211:04:592
1351659993128,2cyclictest0-21swapper/208:53:582
1351659993127,2cyclictest0-21swapper/210:48:592
1351653993122,7cyclictest1402430-21/usr/sbin/munin09:45:230
135165399311,29cyclictest0-21swapper/012:05:130
1351664993028,1cyclictest0-21swapper/310:17:593
1351664993027,2cyclictest0-21swapper/311:15:593
1351664993025,3cyclictest0-21swapper/308:25:583
135166499300,28cyclictest0-21swapper/312:30:033
1351659993027,2cyclictest0-21swapper/211:05:122
1351659993027,2cyclictest0-21swapper/209:11:002
1351659993027,2cyclictest0-21swapper/208:25:002
135165999300,27cyclictest0-21swapper/210:05:032
135165999300,24cyclictest0-21swapper/207:30:042
1351653993027,1cyclictest714-21Xorg09:02:590
135165399301,2cyclictest0-21swapper/008:25:120
1351664992927,1cyclictest0-21swapper/312:35:133
1351664992927,1cyclictest0-21swapper/312:19:543
1351664992927,1cyclictest0-21swapper/311:10:023
1351664992927,1cyclictest0-21swapper/310:45:583
1351664992927,1cyclictest0-21swapper/308:04:003
1351664992926,2cyclictest0-21swapper/310:38:593
1351664992925,2cyclictest0-21swapper/309:15:593
1351659992927,1cyclictest0-21swapper/209:29:592
1351659992926,2cyclictest0-21swapper/212:20:122
1351659992926,2cyclictest0-21swapper/209:17:002
1351659992926,2cyclictest0-21swapper/207:45:142
135165999290,2cyclictest0-21swapper/207:50:592
135165999290,2cyclictest0-21swapper/207:20:122
135165999290,27cyclictest0-21swapper/212:25:142
135165999290,27cyclictest0-21swapper/212:25:142
135165999290,27cyclictest0-21swapper/210:20:142
1351653992927,1cyclictest0-21swapper/011:19:590
1351653992926,2cyclictest0-21swapper/010:00:140
4577091280,7ptp4l441ktimers/311:50:003
4577091280,6ptp4l441ktimers/312:10:003
1351664992826,1cyclictest0-21swapper/312:11:003
1351664992825,2cyclictest0-21swapper/307:12:593
135166499280,26cyclictest0-21swapper/310:30:023
135166499280,26cyclictest0-21swapper/310:05:023
135166499280,26cyclictest0-21swapper/307:35:013
1351659992826,1cyclictest0-21swapper/211:44:592
1351659992825,2cyclictest0-21swapper/211:10:012
135165999280,26cyclictest0-21swapper/209:00:132
135165999280,26cyclictest0-21swapper/208:37:582
4577091270,7ptp4l61490irq/134-eno1-TxRx-007:20:013
4577091270,7ptp4l441ktimers/311:00:003
4577091270,6ptp4l441ktimers/308:19:563
1351664992725,1cyclictest0-21swapper/312:20:133
1351664992725,1cyclictest0-21swapper/309:30:123
1351664992725,1cyclictest0-21swapper/308:34:593
1351664992724,2cyclictest0-21swapper/310:54:593
135166499270,26cyclictest0-21swapper/307:53:593
135165999270,25cyclictest0-21swapper/207:10:462
4577091260,6ptp4l61490irq/134-eno1-TxRx-007:59:553
4577091260,6ptp4l441ktimers/309:30:013
4577091260,5ptp4l441ktimers/312:05:013
4577091260,5ptp4l441ktimers/310:29:553
231999260,14rtkit-daemon1350510-21df_inode07:05:151
1351664992624,1cyclictest0-21swapper/308:11:583
1351664992623,2cyclictest0-21swapper/310:20:593
1351664992623,2cyclictest0-21swapper/307:35:003
135166499260,24cyclictest0-21swapper/310:40:133
1351659992624,1cyclictest0-21swapper/210:54:592
1351659992621,2cyclictest0-21swapper/207:44:582
135165999260,24cyclictest0-21swapper/208:00:592
1351664992523,1cyclictest0-21swapper/308:45:593
1351659992523,1cyclictest0-21swapper/210:29:592
1351659992523,1cyclictest0-21swapper/210:04:582
1351659992522,2cyclictest0-21swapper/211:58:592
1351659992522,2cyclictest0-21swapper/208:06:592
1351659992521,2cyclictest0-21swapper/207:25:592
1351659992521,2cyclictest0-21swapper/207:25:582
1351664992422,1cyclictest0-21swapper/311:55:593
1351664992321,1cyclictest0-21swapper/308:57:003
1351659992219,2cyclictest0-21swapper/210:17:582
1351659992119,1cyclictest0-21swapper/210:44:582
1351659992118,2cyclictest0-21swapper/210:36:592
1351659992118,2cyclictest0-21swapper/208:47:002
1351659992118,2cyclictest0-21swapper/208:30:592
1351659992016,2cyclictest0-21swapper/212:11:002
13516599974,2cyclictest0-21swapper/212:07:532
13516599930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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