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2026-08-29 - 00:58
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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 Aug 28, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
197666999129117,9cyclictest2024660-21latency_hist09:40:011
197666899127116,8cyclictest1213033-21systemd-journal08:20:000
197666899121110,7cyclictest2003893-21kworker/u8:3+flush-179:009:05:010
197666899118107,8cyclictest2007102-21latency_hist08:45:020
197666999117104,10cyclictest1213033-21systemd-journal09:30:011
197666999116106,7cyclictest1989341-21latency_hist07:50:011
197666999112100,9cyclictest1997281-21latency_hist08:15:001
19766699911099,8cyclictest2039240-21latency_hist10:25:011
19766689911096,11cyclictest1213033-21systemd-journal10:45:000
197666999108100,6cyclictest2042393-21kworker/u8:2+flush-179:011:00:231
19766699910497,5cyclictest1968562-21kworker/u8:1+flush-179:007:20:001
19766699910394,7cyclictest2077446-21apt-get12:25:031
19766699910296,4cyclictest1979806-21kworker/u8:3+flush-179:007:25:141
19766689910291,8cyclictest2023056-21latency_hist09:35:020
1976669999991,6cyclictest2075880-21kworker/u8:1+flush-179:012:39:591
1976669999991,6cyclictest2041082-21apt-get10:30:111
1976669999888,8cyclictest2010271-21latency_hist08:55:011
1976669999685,8cyclictest2008687-21latency_hist08:50:011
1976668999587,6cyclictest2012934-21kworker/u8:0+flush-179:011:05:280
1976669999282,7cyclictest1984524-21latency_hist07:35:011
1976668999281,8cyclictest2003909-21latency_hist08:35:000
1976668999080,7cyclictest1213033-21systemd-journal12:30:000
1976669998982,5cyclictest2032870-21apt-get10:05:111
1976669998982,5cyclictest1975042-21kworker/u8:2+flush-179:007:20:151
1976669998982,5cyclictest1975042-21kworker/u8:2+flush-179:007:10:221
1976668998982,5cyclictest2012934-21kworker/u8:0+flush-179:009:10:170
1976668998978,8cyclictest2042393-21kworker/u8:2+events_unbound11:15:260
1976668998677,7cyclictest1979806-21kworker/u8:3+flush-179:007:40:010
1976669998578,5cyclictest2076103-21apt-get12:20:111
1976669998573,11cyclictest2015035-21kworker/u8:1+flush-179:009:15:011
1976669998572,11cyclictest2056784-21kworker/u8:0+events_unbound12:00:011
1976668998474,8cyclictest2072652-21latency_hist12:10:020
1976668998474,8cyclictest2049030-21apt-get10:55:100
1976668998374,7cyclictest2012934-21kworker/u8:0+events_unbound11:05:010
1976668998367,13cyclictest2010527-21apt-get08:55:110
1976668998274,5cyclictest2015035-21kworker/u8:1+events_unbound09:15:150
1976668998273,6cyclictest2048776-21latency_hist10:55:010
1976668998271,9cyclictest510-21rs:main0
1976668998271,9cyclictest510-21rs:main0
1976669998067,10cyclictest2023016-21apt-get09:34:281
1976668998072,6cyclictest2060699-21kworker/u8:1+flush-179:011:35:250
1976668998070,7cyclictest1213033-21systemd-journal12:05:010
1976669997972,4cyclictest2012934-21kworker/u8:0+flush-179:010:55:011
1976669997971,5cyclictest2067915-21kworker/u8:4+events_unbound12:05:241
1976669997969,7cyclictest1989330-21kworker/u8:1+events_unbound08:00:151
1976669997868,8cyclictest2066541-21apt-get11:50:141
1976669997768,7cyclictest1213033-21systemd-journal11:30:001
1976669997768,6cyclictest2032615-21latency_hist10:05:011
1976668997767,8cyclictest2056784-21kworker/u8:0+events_unbound12:20:010
1976669997668,5cyclictest2056784-21kworker/u8:0+flush-179:012:15:001
1976668997666,8cyclictest1213033-21systemd-journal11:45:010
1976669997566,7cyclictest1979806-21kworker/u8:3+events_unbound07:55:141
1976669997467,5cyclictest2003893-21kworker/u8:3+events_unbound09:50:131
1976669997467,5cyclictest1986159-21latency_hist07:40:011
1976668997362,8cyclictest2003893-21kworker/u8:3+flush-179:009:50:190
1976669997264,5cyclictest2042393-21kworker/u8:2+events_unbound11:15:201
1976669997263,7cyclictest2003893-21kworker/u8:3+flush-179:009:15:261
1976669997250,20cyclictest1990915-21latency_hist07:55:011
1976668997261,8cyclictest1213033-21systemd-journal10:20:000
1976669997164,5cyclictest2075880-21kworker/u8:1+events_unbound12:30:241
1976668997160,9cyclictest2018500-21apt-get09:20:100
1976668997062,6cyclictest2000735-21latency_hist08:25:020
1976668997060,8cyclictest1979758-21latency_hist07:20:010
1976668997060,7cyclictest1976825-21apt-get07:10:090
1976669996963,4cyclictest2003893-21kworker/u8:3+flush-179:008:40:251
1976668996964,4cyclictest2003893-21kworker/u8:3+flush-179:009:09:290
1976668996960,6cyclictest2012934-21kworker/u8:0+events_unbound10:35:190
1976668996958,9cyclictest1213033-21systemd-journal10:35:000
1976668996958,8cyclictest1989330-21kworker/u8:1+events_unbound08:05:150
1976674996861,5cyclictest2055156-21turbostat11:15:003
1976668996860,7cyclictest2056784-21kworker/u8:0+events_unbound11:45:120
1976668996858,7cyclictest2042393-21kworker/u8:2+flush-179:011:30:000
1976669996752,8cyclictest2042393-21kworker/u8:2+flush-179:010:40:161
1976668996763,3cyclictest2056784-21kworker/u8:0+events_unbound11:30:250
1976669996662,3cyclictest2060699-21kworker/u8:1+events_unbound11:35:211
1976669996661,3cyclictest2003893-21kworker/u8:3+flush-179:009:00:161
1976669996657,7cyclictest2030007-21kworker/u8:1+events_unbound09:55:201
1976669996656,8cyclictest1986409-21apt-get07:40:101
1976668996660,4cyclictest1979806-21kworker/u8:3+flush-179:007:55:200
1976669996557,6cyclictest2002320-21latency_hist08:30:001
1976668996557,6cyclictest2012934-21kworker/u8:0+flush-179:009:35:200
1976669996457,5cyclictest2042393-21kworker/u8:2+events_unbound10:40:011
1976669996457,4cyclictest2060699-21kworker/u8:1+flush-179:012:00:231
1976669996456,6cyclictest2012934-21kworker/u8:0+flush-179:009:05:151
1976668996459,4cyclictest1984513-21kworker/u8:2+flush-179:007:45:000
1976669996359,2cyclictest2019830-21latency_hist09:25:001
1976669996357,5cyclictest2035821-21kworker/u8:3+events_unbound10:25:261
1976669996352,8cyclictest2011863-21latency_hist09:00:001
1976668996354,7cyclictest2035190-21kworker/u8:2+events_unbound10:10:200
1976668996354,7cyclictest2003893-21kworker/u8:3+flush-179:008:40:000
1976668996251,8cyclictest2007358-21apt-get08:45:110
1976669996153,6cyclictest1989330-21kworker/u8:1+flush-179:008:05:171
1976669996130,1cyclictest0-21swapper/111:13:591
1976668996155,5cyclictest2030007-21kworker/u8:1+flush-179:010:00:140
1976668996149,9cyclictest2074269-21true12:14:590
1976668996051,8cyclictest1989330-21kworker/u8:1+flush-179:008:25:160
1976669995852,5cyclictest2003893-21kworker/u8:3+events_unbound09:40:251
1976669995851,5cyclictest2012934-21kworker/u8:0+flush-179:011:05:251
1976669995850,7cyclictest2042393-21kworker/u8:2+events_unbound10:45:251
1976669995850,6cyclictest2060699-21kworker/u8:1+events_unbound11:40:241
1976669995849,7cyclictest2056986-21/usr/sbin/munin11:20:151
1976669995849,7cyclictest2056986-21/usr/sbin/munin11:20:151
1976668995850,5cyclictest1979806-21kworker/u8:3+flush-179:007:30:140
197666999561,3cyclictest714-21Xorg08:17:001
1976669995552,2cyclictest2003645-21kworker/u8:0+events_unbound08:35:141
1976669995550,4cyclictest2056784-21kworker/u8:0+events_unbound12:15:241
1976669995549,5cyclictest1989330-21kworker/u8:1+flush-179:008:30:221
1976668995548,5cyclictest2007079-21kworker/u8:1+events_unbound08:50:240
197666899551,2cyclictest714-21Xorg07:28:590
1976669995245,6cyclictest1979806-21kworker/u8:3+flush-179:008:25:011
1976668995246,5cyclictest2003893-21kworker/u8:3+flush-179:009:45:230
1976668995246,5cyclictest1989330-21kworker/u8:1+events_unbound08:10:240
1976669995127,7cyclictest2050370-21latency_hist11:00:011
1976668995144,5cyclictest2054576-21kworker/u8:3+events_unbound11:10:250
1976668995132,18cyclictest2047191-21munin-run10:50:000
4577091490,14ptp4l61490irq/134-eno1-TxRx-007:10:013
1976668994843,4cyclictest2060699-21kworker/u8:1+flush-179:011:58:280
1976668994842,5cyclictest2012934-21kworker/u8:0+events_unbound09:25:150
1976668994739,6cyclictest1975042-21kworker/u8:2+events_unbound07:20:200
1976668994640,4cyclictest1213033-21systemd-journal09:55:280
1976671994541,2cyclictest0-21swapper/207:22:592
1976668994542,2cyclictest2030007-21kworker/u8:1+events_unbound10:05:240
1976668994539,5cyclictest1989330-21kworker/u8:1+flush-179:008:00:180
1976668994535,8cyclictest1989337-21perf07:49:590
1976669994438,5cyclictest2056784-21kworker/u8:0+events_unbound11:45:181
1976669994336,5cyclictest321-21hwrng11:32:591
1976674994239,2cyclictest0-21swapper/307:22:593
1976669994236,5cyclictest2003893-21kworker/u8:3+events_unbound09:45:181
1976668994222,17cyclictest1990138-21kernelversion07:50:180
1976674994135,5cyclictest1986148-21turbostat07:40:013
197666999415,10cyclictest714-21Xorg10:19:591
1976674994034,5cyclictest2008700-21turbostat08:50:003
197667499400,5cyclictest2051981-21turbostat11:05:003
197667499400,39cyclictest2021425-21turbostat09:30:003
1976668994035,4cyclictest2079282-21kworker/u8:2+flush-179:012:30:200
1976668994018,20cyclictest0-21swapper/010:25:260
1976668994010,12cyclictest2038706-21uname10:20:220
1976674993931,6cyclictest2072654-21turbostat12:10:013
197667499390,5cyclictest1992531-21turbostat08:00:013
197667499390,4cyclictest2026267-21turbostat09:44:593
197667499390,38cyclictest2074244-21turbostat12:14:593
197667499390,38cyclictest2045620-21turbostat10:45:003
197667499390,38cyclictest2010284-21turbostat08:54:593
197667199390,36cyclictest0-21swapper/207:30:592
1976674993832,5cyclictest2016652-21turbostat09:15:003
197667499380,4cyclictest2039253-21turbostat10:25:003
197667499380,36cyclictest0-21swapper/307:31:003
197667499380,35cyclictest0-21swapper/310:13:593
1976671993836,1cyclictest0-21swapper/211:14:592
1976671993834,2cyclictest0-21swapper/210:50:592
1976671993834,2cyclictest0-21swapper/208:32:002
197667199380,36cyclictest0-21swapper/209:42:592
197667199380,36cyclictest0-21swapper/209:37:592
197667199380,36cyclictest0-21swapper/207:40:012
197667199380,35cyclictest0-21swapper/210:33:592
197667199380,35cyclictest0-21swapper/209:45:592
197667199380,35cyclictest0-21swapper/208:50:012
1976668993829,7cyclictest2077250-21timerwakeupswit12:20:250
197667499370,35cyclictest0-21swapper/312:28:593
1976671993735,1cyclictest0-21swapper/207:10:592
1976671993734,2cyclictest0-21swapper/211:03:592
197667199370,2cyclictest0-21swapper/212:29:002
197667199370,29cyclictest0-21swapper/210:20:002
197667199370,1cyclictest0-21swapper/211:10:002
1976674993634,1cyclictest0-21swapper/312:24:553
1976674993634,1cyclictest0-21swapper/310:08:593
1976674993633,2cyclictest0-21swapper/310:50:593
1976674993633,2cyclictest0-21swapper/307:10:583
197667499360,35cyclictest0-21swapper/311:53:593
197667499360,35cyclictest0-21swapper/308:34:593
1976671993634,1cyclictest0-21swapper/209:15:002
1976671993633,2cyclictest0-21swapper/212:10:012
197667199360,1cyclictest0-21swapper/210:13:592
1976668993622,13cyclictest2067874-21apt11:55:000
1976674993533,1cyclictest0-21swapper/309:59:593
197667499350,34cyclictest0-21swapper/311:59:593
1976671993533,1cyclictest0-21swapper/211:59:592
1976671993532,2cyclictest0-21swapper/212:31:582
1976671993532,2cyclictest0-21swapper/212:21:592
1976671993531,2cyclictest0-21swapper/208:41:592
1976671993531,2cyclictest0-21swapper/208:36:582
1976669993530,4cyclictest2012934-21kworker/u8:0+events_unbound10:10:121
1976668993527,7cyclictest2082524-21timerwakeupswit12:35:240
4577091340,3ptp4l61490irq/134-eno1-TxRx-012:30:123
1976674993432,1cyclictest0-21swapper/310:55:593
1976671993431,2cyclictest0-21swapper/211:30:592
1976668993414,19cyclictest0-21swapper/007:10:020
1976674993328,4cyclictest2029429-21turbostat09:55:003
1976674993327,5cyclictest1979757-21turbostat07:20:003
1976671993331,1cyclictest0-21swapper/209:54:592
1976674993229,2cyclictest0-21swapper/308:36:583
1976671993229,2cyclictest0-21swapper/211:00:012
1976671993228,2cyclictest0-21swapper/207:19:552
1976674993129,1cyclictest0-21swapper/311:30:593
1976674993128,2cyclictest0-21swapper/308:42:003
1976674993028,1cyclictest0-21swapper/311:20:593
1976674993028,1cyclictest0-21swapper/311:20:593
1976674993027,2cyclictest0-21swapper/308:15:013
1976671993027,2cyclictest0-21swapper/208:25:142
1976671993026,2cyclictest0-21swapper/210:45:592
197667199300,28cyclictest0-21swapper/210:25:132
197667199300,28cyclictest0-21swapper/210:20:132
197667199300,28cyclictest0-21swapper/209:15:132
197667199300,1cyclictest0-21swapper/211:23:592
197667199300,1cyclictest0-21swapper/211:23:592
1976668993011,18cyclictest0-21swapper/009:40:170
4577091290,7ptp4l61490irq/134-eno1-TxRx-011:50:003
4577091290,7ptp4l61490irq/134-eno1-TxRx-008:05:003
1976674992927,1cyclictest0-21swapper/309:00:143
1976674992926,2cyclictest0-21swapper/310:20:013
197667499290,27cyclictest0-21swapper/311:05:133
197667499290,27cyclictest0-21swapper/308:05:133
197667499290,1cyclictest0-21swapper/310:36:003
1976671992926,2cyclictest0-21swapper/207:41:592
1976671992925,2cyclictest0-21swapper/209:08:592
1976671992925,2cyclictest0-21swapper/209:00:142
1976671992925,2cyclictest0-21swapper/208:55:122
197667199290,27cyclictest0-21swapper/212:15:132
197667199290,27cyclictest0-21swapper/212:10:122
197667199290,27cyclictest0-21swapper/211:25:102
197667199290,27cyclictest0-21swapper/211:15:142
197667199290,27cyclictest0-21swapper/208:50:132
197667199290,27cyclictest0-21swapper/208:15:022
197667199290,21cyclictest0-21swapper/208:05:122
4577091280,6ptp4l441ktimers/310:35:003
1976674992825,2cyclictest0-21swapper/309:15:143
1976674992825,2cyclictest0-21swapper/308:25:153
1976674992824,3cyclictest0-21swapper/310:45:593
197667499280,2cyclictest0-21swapper/312:15:143
197667499280,27cyclictest0-21swapper/311:25:113
197667499280,27cyclictest0-21swapper/310:25:133
197667499280,27cyclictest0-21swapper/308:55:133
197667499280,26cyclictest0-21swapper/311:15:143
197667499280,26cyclictest0-21swapper/309:45:143
197667499280,26cyclictest0-21swapper/308:10:133
1976671992824,2cyclictest0-21swapper/212:00:592
1976671992824,2cyclictest0-21swapper/211:38:592
4577091270,6ptp4l61490irq/134-eno1-TxRx-010:04:573
4577091270,5ptp4l61490irq/134-eno1-TxRx-012:39:563
1976674992725,1cyclictest0-21swapper/309:35:003
1976671992723,2cyclictest0-21swapper/210:40:142
197667199270,25cyclictest0-21swapper/209:26:592
197667199270,25cyclictest0-21swapper/207:52:582
197667199270,24cyclictest0-21swapper/207:56:592
197667199270,1cyclictest0-21swapper/208:10:132
197667199270,1cyclictest0-21swapper/207:30:002
4577091260,6ptp4l61490irq/134-eno1-TxRx-008:24:553
4577091260,6ptp4l441ktimers/312:05:013
4577091260,5ptp4l61490irq/134-eno1-TxRx-009:39:553
4577091260,5ptp4l61490irq/134-eno1-TxRx-007:55:013
4577091260,5ptp4l441ktimers/309:25:003
4577091260,5ptp4l441ktimers/307:49:593
4577091260,4ptp4l441ktimers/311:45:023
1976674992624,1cyclictest0-21swapper/307:41:593
1976671992622,2cyclictest0-21swapper/211:41:002
197667199260,2cyclictest0-21swapper/210:00:592
1976674992523,1cyclictest0-21swapper/309:08:583
1976674992522,2cyclictest0-21swapper/311:38:593
1976671992522,2cyclictest0-21swapper/212:37:592
1976671992522,2cyclictest0-21swapper/209:55:582
197667199250,2cyclictest0-21swapper/210:38:592
4577091240,4ptp4l61490irq/134-eno1-TxRx-007:29:553
1976671992420,2cyclictest0-21swapper/209:34:552
1976671992320,2cyclictest0-21swapper/211:45:102
1976671992219,2cyclictest0-21swapper/210:05:592
1976669992116,3cyclictest0-21swapper/107:10:011
1976671991916,2cyclictest0-21swapper/211:53:592
1976671991815,2cyclictest0-21swapper/208:04:562
1976671991411,2cyclictest0-21swapper/208:22:582
1976671991310,2cyclictest0-21swapper/209:21:002
1976671991310,2cyclictest0-21swapper/207:48:002
19766719930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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