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2025-12-18 - 15:25
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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 Dec 18, 2025 12:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
228836999572,5cyclictest323591-21latency_hist12:05:011
228836999164,8cyclictest236754-21latency_hist07:35:001
228835997669,5cyclictest276850-21latency_hist09:40:000
228835997565,8cyclictest288477-21/usr/sbin/munin10:15:220
228835997153,15cyclictest273661-21latency_hist09:30:020
4577091690,35ptp4l441ktimers/307:09:143
228835996859,6cyclictest299431-21kworker/u8:0+events_unbound11:10:270
228835996859,6cyclictest299431-21kworker/u8:0+events_unbound11:10:260
228835996763,3cyclictest253649-21kworker/u8:0+flush-179:009:00:260
228835996558,5cyclictest330218-21latency_hist12:25:010
228836996451,10cyclictest240777-21diskstats07:45:181
228835996458,4cyclictest328639-21latency_hist12:20:010
228836996347,8cyclictest316942-21http11:45:001
228836996159,1cyclictest0-21swapper/109:09:591
228836996154,4cyclictest304200-21kworker/u8:2+flush-179:011:10:011
228836996048,8cyclictest304200-21kworker/u8:2+flush-179:011:20:221
228836995950,6cyclictest243319-21kworker/u8:3+flush-179:008:10:251
228845995855,2cyclictest0-21swapper/309:16:583
228836995852,4cyclictest259367-21kworker/u8:1+events_unbound08:55:241
228836995651,4cyclictest259367-21kworker/u8:1+flush-179:010:15:011
228836995647,6cyclictest294588-21kworker/u8:3+flush-179:010:40:221
228836995549,4cyclictest245046-21kworker/u8:1+events_unbound08:20:011
228836995547,6cyclictest256143-21latency_hist08:35:011
228836995547,6cyclictest230384-21latency_hist07:15:001
228836995348,4cyclictest325151-21kworker/u8:2+flush-179:012:24:551
228836995248,3cyclictest299431-21kworker/u8:0+flush-179:011:10:281
228836995248,3cyclictest299431-21kworker/u8:0+flush-179:011:10:271
228836995245,4cyclictest278737-21kworker/u8:0+flush-179:010:20:011
228836995240,9cyclictest266-21systemd-journal10:48:101
228835995246,5cyclictest259367-21kworker/u8:1+events_unbound10:00:000
22883599521,48cyclictest0-21swapper/007:45:160
228836995142,7cyclictest238884-21/usr/sbin/munin07:40:241
22883699510,48cyclictest1-21systemd08:40:001
228835995146,4cyclictest331795-21kworker/u8:0+flush-179:012:30:010
228836995045,3cyclictest331850-21kworker/u8:1+flush-179:012:39:591
228836995044,4cyclictest331795-21kworker/u8:0+flush-179:012:30:161
228836995041,7cyclictest304172-21latency_hist11:05:011
228836994942,4cyclictest278737-21kworker/u8:0+flush-179:010:00:161
228835994830,16cyclictest260931-21munin-run08:50:000
228835994740,5cyclictest294588-21kworker/u8:3+events_unbound10:55:240
228835994728,18cyclictest0-21swapper/007:35:020
228835994719,15cyclictest316915-21turbostat11:49:550
228835994638,6cyclictest259367-21kworker/u8:1+events_unbound09:35:000
228836994539,4cyclictest328625-21sendmail12:19:591
22883699441,2cyclictest714-21Xorg12:14:591
22883699440,43cyclictest1-21systemd08:00:011
228835994438,4cyclictest293279-21apt-get10:30:130
228835994438,4cyclictest272075-21latency_hist09:25:020
228835994427,16cyclictest0-21swapper/011:00:140
22883599441,28cyclictest250028-21apt-get08:15:120
22884099430,41cyclictest0-21swapper/210:39:552
228836994340,2cyclictest714-21Xorg11:36:591
228836994340,2cyclictest714-21Xorg11:36:591
228836994338,4cyclictest215594-21kworker/u8:1+events_unbound07:25:011
228836994337,5cyclictest291440-21turbostat10:29:541
228836994337,4cyclictest259367-21kworker/u8:1+events_unbound10:05:191
228836994237,4cyclictest268872-21kworker/u8:3+flush-179:009:50:241
228836994235,5cyclictest484-21dbus-daemon11:55:001
22883699420,40cyclictest299396-21turbostat10:54:551
228835994235,5cyclictest236775-21kworker/u8:0+flush-179:008:00:210
228835994234,6cyclictest253649-21kworker/u8:0+flush-179:009:00:000
22884099410,39cyclictest0-21swapper/212:09:562
228836994136,4cyclictest243319-21kworker/u8:3+flush-179:008:05:011
228836994135,5cyclictest253649-21kworker/u8:0+flush-179:008:53:091
228836994131,6cyclictest0-21swapper/109:35:001
228845994034,5cyclictest310558-21turbostat11:25:003
228845994034,5cyclictest308947-21turbostat11:20:003
228845994034,4cyclictest235180-21turbostat07:30:003
22884599400,38cyclictest299396-21turbostat10:49:593
22884599400,38cyclictest286662-21turbostat10:10:003
22884599400,38cyclictest265721-21turbostat09:05:003
228836994036,3cyclictest308991-21systemd-run11:20:001
228836994034,4cyclictest304200-21kworker/u8:2+events_unbound11:25:251
228836994033,5cyclictest259367-21kworker/u8:1+events_unbound09:45:151
228836994032,6cyclictest256178-21kworker/u8:3+flush-179:008:45:001
22883699401,2cyclictest714-21Xorg10:35:001
22883699401,2cyclictest714-21Xorg09:43:581
228835994033,5cyclictest326769-21apt-get12:15:000
228835994029,9cyclictest266-21systemd-journal10:27:100
228835994029,9cyclictest243661-21apt-get07:55:110
228835994027,11cyclictest294868-21apt-get10:35:140
228835994018,21cyclictest314391-21gltestperf11:35:170
228835994018,21cyclictest314391-21gltestperf11:35:170
22884599390,1cyclictest0-21swapper/312:39:553
22884099390,37cyclictest0-21swapper/212:01:592
228836993936,2cyclictest714-21Xorg07:17:591
228836993936,2cyclictest259367-21kworker/u8:1+flush-179:009:35:171
228836993933,5cyclictest231957-21kworker/u8:3+flush-179:007:25:251
228836993933,4cyclictest304200-21kworker/u8:2+flush-179:011:32:101
228836993931,6cyclictest253649-21kworker/u8:0+events_unbound08:45:241
228836993930,6cyclictest294588-21kworker/u8:3+events_unbound10:55:181
228836993929,9cyclictest269136-21apt-get09:15:131
22883699390,37cyclictest714-21Xorg07:36:591
228835993935,2cyclictest714-21Xorg11:22:590
228835993931,6cyclictest283437-21kworker/u8:2+events_unbound10:05:010
228835993931,6cyclictest215594-21kworker/u8:1+flush-179:007:15:210
228835993930,7cyclictest228791-21kworker/u8:2+flush-179:007:20:160
22883599391,2cyclictest714-21Xorg09:42:590
22883599390,3cyclictest249775-21munin-run08:15:000
228845993832,4cyclictest285084-21turbostat10:05:013
22884599380,37cyclictest0-21swapper/312:15:593
22884099380,36cyclictest0-21swapper/209:31:592
22884099380,35cyclictest0-21swapper/209:59:552
228836993833,4cyclictest308396-21kworker/u8:1+flush-179:012:05:241
228836993833,4cyclictest243319-21kworker/u8:3+flush-179:008:20:231
228836993831,5cyclictest294588-21kworker/u8:3+flush-179:010:40:001
228836993828,6cyclictest0-21swapper/109:00:591
228835993834,2cyclictest714-21Xorg10:47:590
228835993818,18cyclictest0-21swapper/009:10:220
228835993817,18cyclictest319013-21apt-get11:50:130
228835993816,18cyclictest0-21swapper/008:25:010
228835993814,23cyclictest255089-21df08:30:140
22883599381,13cyclictest228832-21cyclictest07:10:010
22883599380,37cyclictest714-21Xorg09:18:590
22883599380,2cyclictest714-21Xorg11:25:590
228845993735,1cyclictest0-21swapper/311:40:593
228845993731,5cyclictest233589-21turbostat07:25:003
22884599370,35cyclictest0-21swapper/308:52:003
228840993734,2cyclictest0-21swapper/210:09:002
228840993734,2cyclictest0-21swapper/207:30:592
228840993734,2cyclictest0-21swapper/207:15:592
22884099370,35cyclictest0-21swapper/211:43:592
22884099370,1cyclictest0-21swapper/208:11:002
228836993734,2cyclictest0-21swapper/108:26:591
228836993732,4cyclictest240107-21kworker/u8:1+events_unbound07:50:241
228835993734,2cyclictest714-21Xorg10:11:580
228835993728,7cyclictest253649-21kworker/u8:0+flush-179:008:50:160
228835993718,18cyclictest266246-21sh09:05:150
228835993717,18cyclictest0-21swapper/011:15:260
22883599370,1cyclictest0-21swapper/007:14:550
45782913633,1phc2sys0-21swapper/307:56:003
228845993634,1cyclictest0-21swapper/308:14:553
228845993631,4cyclictest333401-21turbostat12:35:003
22884599360,35cyclictest0-21swapper/311:13:003
22884599360,35cyclictest0-21swapper/311:12:593
22884599360,35cyclictest0-21swapper/309:22:003
228840993633,2cyclictest0-21swapper/208:58:592
228836993631,4cyclictest278737-21kworker/u8:0+flush-179:009:55:161
228836993631,4cyclictest259367-21kworker/u8:1+flush-179:009:20:161
228835993633,2cyclictest714-21Xorg08:43:590
228835993632,3cyclictest335011-21munin-run12:40:000
228835993632,3cyclictest151ktimers/011:05:150
228835993616,18cyclictest0-21swapper/009:50:230
228845993533,1cyclictest0-21swapper/310:56:583
228840993533,1cyclictest0-21swapper/207:29:592
228840993532,2cyclictest0-21swapper/212:28:592
228840993532,2cyclictest0-21swapper/211:52:592
228840993532,2cyclictest0-21swapper/210:34:552
228840993532,2cyclictest0-21swapper/209:19:592
228840993532,2cyclictest0-21swapper/208:46:592
228836993531,3cyclictest245046-21kworker/u8:1+flush-179:008:05:201
228836993530,4cyclictest268872-21kworker/u8:3+flush-179:009:25:151
228836993525,8cyclictest313709-21kworker/u8:3+events_unbound11:55:131
228835993532,2cyclictest0-21swapper/008:36:590
228835993523,10cyclictest285326-21apt-get10:05:100
22883599352,30cyclictest320599-21apt-get11:55:130
228835993513,20cyclictest0-21swapper/012:32:100
228835993513,19cyclictest0-21swapper/009:50:010
4577091340,3ptp4l61490irq/134-eno1-TxRx-009:50:123
228845993432,1cyclictest0-21swapper/307:32:593
228845993431,2cyclictest0-21swapper/309:40:593
228836993429,4cyclictest325151-21kworker/u8:2+flush-179:012:25:191
228836993427,5cyclictest317703-21kworker/u8:2+events_unbound11:45:251
228836993427,4cyclictest291600-21latency_hist10:25:001
228835993413,3cyclictest1-21systemd07:52:100
228845993331,1cyclictest0-21swapper/309:32:583
228845993330,2cyclictest0-21swapper/307:44:593
228840993331,1cyclictest0-21swapper/210:50:002
228840993330,2cyclictest0-21swapper/209:01:582
228840993330,2cyclictest0-21swapper/208:08:592
228835993330,2cyclictest313752-21systemd-run11:35:020
228835993316,15cyclictest0-21swapper/010:40:250
228835993314,17cyclictest0-21swapper/007:40:120
228835993312,5cyclictest247199-21tune2fs08:05:150
228835993310,5cyclictest322871-21sed12:00:200
228845993230,1cyclictest0-21swapper/312:09:593
228845993230,1cyclictest0-21swapper/309:10:003
228845993227,4cyclictest294617-21turbostat10:35:003
228836993223,6cyclictest259367-21kworker/u8:1+flush-179:009:10:181
228835993230,1cyclictest0-21swapper/010:24:560
228835993228,3cyclictest714-21Xorg07:28:000
228835993226,4cyclictest254559-21munin-plugin-st08:30:010
22883599320,2cyclictest315579-21apt-get11:40:150
228845993129,1cyclictest0-21swapper/312:26:593
228845993129,1cyclictest0-21swapper/309:58:583
228840993128,2cyclictest0-21swapper/208:04:552
22883599311,6cyclictest685-21snmpd12:05:130
228845993028,1cyclictest0-21swapper/310:10:583
228845993027,2cyclictest0-21swapper/312:11:593
228845993027,2cyclictest0-21swapper/307:53:593
228845993027,2cyclictest0-21swapper/307:10:093
228845993024,5cyclictest246606-21turbostat08:05:013
22884599300,29cyclictest0-21swapper/310:50:133
22884599300,28cyclictest0-21swapper/309:45:143
228840993027,2cyclictest0-21swapper/209:36:592
228840993027,2cyclictest0-21swapper/207:52:592
22884099300,29cyclictest0-21swapper/209:50:132
22884099300,29cyclictest0-21swapper/208:25:172
22884099300,28cyclictest0-21swapper/209:40:022
22884099300,28cyclictest0-21swapper/207:14:592
228835993025,3cyclictest300987-21ls10:55:000
228845992927,1cyclictest0-21swapper/311:50:143
228845992927,1cyclictest0-21swapper/309:12:583
228845992926,2cyclictest0-21swapper/308:30:133
228845992922,5cyclictest252981-21turbostat08:25:013
22884599290,2cyclictest0-21swapper/311:05:153
22884099290,28cyclictest0-21swapper/211:45:012
22884099290,28cyclictest0-21swapper/208:20:102
22884099290,27cyclictest0-21swapper/212:20:152
22884099290,27cyclictest0-21swapper/211:15:142
22884099290,27cyclictest0-21swapper/210:55:122
22884099290,27cyclictest0-21swapper/210:25:142
22884099290,27cyclictest0-21swapper/209:12:592
22884099290,27cyclictest0-21swapper/208:40:132
228835992924,4cyclictest235838-21gltestperf07:30:170
4577091280,7ptp4l61490irq/134-eno1-TxRx-011:30:003
4577091280,6ptp4l441ktimers/309:00:003
4577091280,6ptp4l441ktimers/307:50:013
228845992826,1cyclictest0-21swapper/309:28:593
228845992826,1cyclictest0-21swapper/307:35:033
228845992825,2cyclictest0-21swapper/307:17:593
22884599280,26cyclictest0-21swapper/311:00:143
228840992825,2cyclictest0-21swapper/212:33:592
228840992825,2cyclictest0-21swapper/210:40:132
228840992825,2cyclictest0-21swapper/209:25:132
228840992825,2cyclictest0-21swapper/208:30:592
228840992824,2cyclictest0-21swapper/207:59:552
22884099280,2cyclictest0-21swapper/207:20:132
22884099280,26cyclictest0-21swapper/212:35:122
4577091270,7ptp4l441ktimers/312:00:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-012:05:013
4577091270,6ptp4l441ktimers/312:25:003
228845992725,1cyclictest0-21swapper/309:35:593
22884599270,26cyclictest0-21swapper/308:49:593
228840992724,2cyclictest0-21swapper/212:15:012
228840992724,2cyclictest0-21swapper/211:25:592
22884099270,1cyclictest0-21swapper/210:15:112
4577091260,6ptp4l61490irq/134-eno1-TxRx-011:40:003
4577091260,6ptp4l61490irq/134-eno1-TxRx-011:40:003
4577091260,6ptp4l61490irq/134-eno1-TxRx-011:35:023
4577091260,6ptp4l441ktimers/308:29:563
4577091260,5ptp4l441ktimers/310:40:013
4577091260,5ptp4l441ktimers/310:24:573
228845992624,1cyclictest0-21swapper/310:44:003
228845992624,1cyclictest0-21swapper/308:19:583
228845992624,1cyclictest0-21swapper/308:06:593
22884599260,25cyclictest0-21swapper/308:44:593
228840992623,2cyclictest0-21swapper/207:35:022
22884099260,24cyclictest0-21swapper/211:25:002
22884099260,24cyclictest0-21swapper/209:48:002
4577091250,5ptp4l441ktimers/310:29:553
22884599250,1cyclictest0-21swapper/311:47:003
228840992523,1cyclictest0-21swapper/211:56:592
228840992523,1cyclictest0-21swapper/209:06:002
228840992522,2cyclictest0-21swapper/211:13:592
228840992522,2cyclictest0-21swapper/211:13:592
228840992522,2cyclictest0-21swapper/210:20:592
22884099250,2cyclictest0-21swapper/207:46:582
22884099250,2cyclictest0-21swapper/207:43:002
22884099250,24cyclictest0-21swapper/211:07:002
4577091240,5ptp4l441ktimers/308:39:553
228836992216,5cyclictest0-21swapper/107:10:021
228840992119,1cyclictest0-21swapper/212:15:012
228840992119,1cyclictest0-21swapper/208:16:592
228840992017,2cyclictest0-21swapper/211:36:592
228840992017,2cyclictest0-21swapper/211:36:592
228840991714,2cyclictest0-21swapper/210:02:592
228840991714,2cyclictest0-21swapper/209:23:592
4577091160,3ptp4l441ktimers/310:15:143
228840991614,1cyclictest0-21swapper/210:53:592
228840991613,2cyclictest0-21swapper/208:51:002
228840991412,1cyclictest0-21swapper/211:05:002
228840991210,1cyclictest0-21swapper/211:30:142
2288409997,1cyclictest0-21swapper/208:38:002
2288409996,2cyclictest0-21swapper/210:13:592
2288409940,3cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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