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2026-05-07 - 08:36
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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 May 07, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33453599911298,13cyclictest3429690-21kworker/u8:0+flush-179:000:00:011
3345359999683,9cyclictest1213033-21systemd-journal21:35:011
3345359998981,6cyclictest3432891-21latency_hist23:40:001
3345357998875,9cyclictest3361519-21http19:59:590
3345357998779,5cyclictest1-21systemd23:10:000
3345359998677,6cyclictest3418296-21latency_hist22:55:011
3345359998478,5cyclictest3445650-21kworker/u8:3+flush-179:000:30:001
3345357998478,4cyclictest3403971-21latency_hist22:10:010
3345357998274,5cyclictest3447291-21latency_hist00:25:000
3345359998075,4cyclictest3347764-21kworker/u8:0+events_unbound19:20:011
3345359997773,3cyclictest3439308-21kworker/u8:2+events_unbound00:04:001
3345359997770,6cyclictest3381219-21kworker/u8:0+flush-179:021:00:001
3345359997566,5cyclictest3415161-21kworker/u8:3+flush-179:023:20:251
3345359997467,5cyclictest3403961-21kworker/u8:3+events_unbound22:15:141
3345359997467,5cyclictest3395686-21kworker/u8:0+flush-179:021:50:221
3345359997467,5cyclictest3358329-21kworker/u8:2+events_unbound20:29:591
3345357997466,6cyclictest1213033-21systemd-journal22:20:000
3345359997266,5cyclictest3343804-21kworker/u8:3+events_unbound20:25:001
3345359997266,4cyclictest3429743-21kworker/u8:1+events_unbound00:35:141
3345359997165,4cyclictest3429690-21kworker/u8:0+flush-179:000:20:011
3345359997165,4cyclictest3429690-21kworker/u8:0+flush-179:000:20:011
3345357997159,10cyclictest3398885-21apt-get21:55:010
3345359997063,5cyclictest3403961-21kworker/u8:3+flush-179:022:15:001
3345359997054,14cyclictest3373110-21kworker/u8:1+flush-179:020:40:191
3345359996962,5cyclictest3411915-21kworker/u8:1+flush-179:023:20:001
3345359996957,4cyclictest3373110-21kworker/u8:1+flush-179:020:55:011
3345357996960,6cyclictest3347764-21kworker/u8:0+flush-179:019:20:180
3345357996958,9cyclictest3387999-21apt-get21:20:110
3345357996958,8cyclictest3435032-21diskstats23:45:140
3345357996958,8cyclictest1213033-21systemd-journal00:10:000
3345359996863,4cyclictest3429690-21kworker/u8:0+flush-179:023:54:551
3345359996758,6cyclictest3397286-21latency_hist21:50:011
3345359996755,9cyclictest3398862-21kworker/u8:2+flush-179:022:40:011
3345359996661,4cyclictest3343804-21kworker/u8:3+flush-179:019:20:231
3345359996657,6cyclictest3361441-21kworker/u8:0+flush-179:020:05:151
3345357996655,9cyclictest3358549-21apt-get19:50:090
334536599650,1cyclictest0-21swapper/323:43:593
3345359996559,4cyclictest3411915-21kworker/u8:1+flush-179:022:55:151
3345359996559,4cyclictest3387980-21kworker/u8:1+flush-179:021:25:221
3345359996556,6cyclictest3351649-21kworker/u8:0+flush-179:019:30:211
3345357996555,7cyclictest3428356-21/usr/sbin/munin23:25:180
3345359996459,3cyclictest3358329-21kworker/u8:2+flush-179:020:30:151
3345359996357,4cyclictest3343804-21kworker/u8:3+flush-179:019:10:211
3345359996355,5cyclictest3429743-21kworker/u8:1+flush-179:000:10:201
3345359996355,5cyclictest3398862-21kworker/u8:2+flush-179:022:30:201
3345357996343,17cyclictest1213033-21systemd-journal21:41:510
334536199620,60cyclictest0-21swapper/200:24:592
3345359996257,3cyclictest3351714-21kworker/u8:2+events_unbound19:35:241
3345359996253,6cyclictest3429690-21kworker/u8:0+events_unbound00:05:151
3345359996156,3cyclictest3381409-21kworker/u8:3+events_unbound21:05:001
3345359996152,6cyclictest3413776-21kworker/u8:0+flush-179:022:45:141
3345357996153,6cyclictest3381409-21kworker/u8:3+flush-179:021:05:010
3345357996148,11cyclictest1213033-21systemd-journal23:25:000
3345359996053,5cyclictest3447421-21kworker/u8:2+flush-179:000:35:001
3345359996050,7cyclictest3419949-21kworker/u8:2+flush-179:023:05:151
3345357996051,7cyclictest3399017-21kworker/u8:3+events_unbound22:00:010
3345357995953,4cyclictest3413776-21kworker/u8:0+flush-179:022:45:220
3345357995951,6cyclictest3408755-21latency_hist22:25:010
3345357995951,6cyclictest3408755-21latency_hist22:25:000
3345359995753,3cyclictest3350062-21kworker/u8:1+flush-179:019:25:201
3345359995753,3cyclictest3350062-21kworker/u8:1+flush-179:019:25:201
3345359995751,4cyclictest3415161-21kworker/u8:3+flush-179:023:30:221
3345359995750,4cyclictest3381409-21kworker/u8:3+flush-179:021:15:161
3345359995748,6cyclictest3387980-21kworker/u8:1+flush-179:021:40:151
3345357995735,20cyclictest3431550-21apt-get23:35:120
3345359995649,5cyclictest3343804-21kworker/u8:3+flush-179:020:05:001
4577091550,17ptp4l61490irq/134-eno1-TxRx-019:05:383
3345357995547,6cyclictest3439308-21kworker/u8:2+events_unbound00:05:000
3345357995547,6cyclictest3436330-21apt-get23:50:110
3345359995447,5cyclictest1213033-21systemd-journal23:41:191
3345359995442,9cyclictest1213033-21systemd-journal23:05:001
3345359995341,9cyclictest3361617-21store20:00:011
3345357995348,4cyclictest3350062-21kworker/u8:1+flush-179:019:25:280
3345357995348,4cyclictest3350062-21kworker/u8:1+flush-179:019:25:280
3345357995344,7cyclictest3358329-21kworker/u8:2+events_unbound20:15:010
3345357995343,8cyclictest3425178-21apt-get23:15:130
3345357995342,8cyclictest3398862-21kworker/u8:2+flush-179:022:35:000
3345359995246,5cyclictest3358329-21kworker/u8:2+flush-179:020:10:161
3345359995246,4cyclictest3354832-21kworker/u8:1+flush-179:019:45:131
3345357995247,4cyclictest3411915-21kworker/u8:1+flush-179:023:04:560
3345359995141,8cyclictest3445954-21apt-get00:20:121
3345357995140,9cyclictest3363591-21apt-get20:05:120
3345359995041,6cyclictest3343804-21kworker/u8:3+flush-179:020:15:211
3345359994941,6cyclictest3345264-21latency_hist19:10:011
3345359994941,5cyclictest3381219-21kworker/u8:0+flush-179:021:05:151
3345357994941,6cyclictest3417253-21diskstats22:50:140
3345359994841,5cyclictest3376323-21kworker/u8:2+flush-179:020:45:131
3345357994838,8cyclictest3412187-21apt-get22:35:100
334535799480,47cyclictest0-21swapper/019:46:590
3345359994742,4cyclictest3373110-21kworker/u8:1+flush-179:020:35:211
3345359994738,7cyclictest3343804-21kworker/u8:3+flush-179:019:40:191
3345357994742,4cyclictest3351649-21kworker/u8:0+flush-179:019:30:170
3345357994742,3cyclictest3411915-21kworker/u8:1+flush-179:022:45:020
3345357994739,6cyclictest3423333-21apt-get23:10:090
3345357994739,6cyclictest3408735-21kworker/u8:0+flush-179:022:25:150
3345359994635,3cyclictest3387980-21kworker/u8:1+events_unbound21:35:131
3345357994638,6cyclictest1213033-21systemd-journal20:45:010
3345357994637,7cyclictest510-21rs:main0
334535799461,36cyclictest3354862-21apt-get19:40:000
3345359994539,4cyclictest3398862-21kworker/u8:2+flush-179:022:20:191
3345359994539,4cyclictest3398862-21kworker/u8:2+flush-179:022:20:191
3345359994538,6cyclictest3387980-21kworker/u8:1+flush-179:021:20:191
3345359994538,5cyclictest3381219-21kworker/u8:0+flush-179:021:10:251
3345359994538,5cyclictest3343804-21kworker/u8:3+flush-179:019:50:131
3345359994536,6cyclictest3429690-21kworker/u8:0+flush-179:023:45:191
3345359994438,4cyclictest3411915-21kworker/u8:1+flush-179:022:40:201
3345359994436,6cyclictest3398862-21kworker/u8:2+flush-179:021:55:251
3345359994436,5cyclictest3403183-21kworker/u8:1+flush-179:022:05:201
3345359994337,4cyclictest3423112-21kworker/u8:0+flush-179:023:10:201
3345357994335,6cyclictest3394103-21latency_hist21:40:010
3345365994236,1cyclictest0-21swapper/321:01:593
334536599420,40cyclictest3416725-21turbostat22:50:013
3345357994234,6cyclictest3373679-21diskstats20:35:160
3345357994231,9cyclictest3430251-21diskstats23:30:150
3345359994137,3cyclictest3428099-21kworker/u8:2+events_unbound23:25:171
3345359994133,6cyclictest3410343-21latency_hist22:30:001
3345357994136,3cyclictest3439324-21cups-browsed00:30:000
3345357994134,4cyclictest3429743-21kworker/u8:1+events_unbound00:40:010
334535799410,5cyclictest3379514-21turbostat20:59:550
334536599400,5cyclictest3351684-21turbostat19:30:003
334536599400,5cyclictest3351684-21turbostat19:30:003
3345357994035,4cyclictest3449148-21turbostat00:34:550
3345357994035,3cyclictest714-21Xorg20:22:000
3345357994034,5cyclictest3387980-21kworker/u8:1+flush-179:021:25:130
3345357994034,4cyclictest3398862-21kworker/u8:2+flush-179:022:00:160
334535799401,37cyclictest714-21Xorg20:29:590
334535799401,37cyclictest1-21systemd23:00:000
334536599390,38cyclictest3429718-21turbostat23:30:003
3345357993933,5cyclictest3376323-21kworker/u8:2+flush-179:020:50:160
3345357993932,5cyclictest3345353-21cyclictest22:12:590
334535799392,36cyclictest0-21swapper/023:59:550
334535799390,37cyclictest0-21swapper/021:14:590
3345365993836,1cyclictest0-21swapper/320:03:593
3345365993835,2cyclictest0-21swapper/323:52:593
3345365993831,5cyclictest3415145-21turbostat22:45:013
3345361993835,2cyclictest0-21swapper/219:47:592
3345361993835,2cyclictest0-21swapper/200:04:592
3345361993834,2cyclictest0-21swapper/219:37:592
3345359993835,2cyclictest0-21swapper/122:02:001
3345357993833,4cyclictest3376351-21turbostat20:49:560
3345357993831,5cyclictest1213033-21systemd-journal19:43:470
334535799380,37cyclictest0-21swapper/021:49:590
334535799380,2cyclictest0-21swapper/021:15:590
3345365993732,4cyclictest3426534-21turbostat23:20:013
3345361993734,2cyclictest0-21swapper/220:35:002
3345361993734,2cyclictest0-21swapper/219:54:552
334536199370,2cyclictest0-21swapper/221:22:592
4577091360,28ptp4l61490irq/134-eno1-TxRx-019:15:123
3345365993634,1cyclictest0-21swapper/320:22:003
3345365993634,1cyclictest0-21swapper/300:36:593
3345365993634,1cyclictest0-21swapper/300:34:553
3345365993634,1cyclictest0-21swapper/300:03:593
3345365993630,4cyclictest3413529-21turbostat22:40:003
334536599360,35cyclictest0-21swapper/322:57:593
334536599360,35cyclictest0-21swapper/321:32:003
334536599360,35cyclictest0-21swapper/321:14:583
334536599360,35cyclictest0-21swapper/320:26:593
3345361993633,2cyclictest0-21swapper/222:05:002
334536199360,1cyclictest0-21swapper/200:34:002
3345357993631,4cyclictest3343804-21kworker/u8:3+flush-179:019:15:170
3345357993630,5cyclictest3387980-21kworker/u8:1+flush-179:021:30:150
3345357993628,6cyclictest1213033-21systemd-journal21:08:520
3345365993534,1cyclictest0-21swapper/319:34:553
3345365993533,1cyclictest0-21swapper/321:42:583
334536599350,1cyclictest0-21swapper/321:49:593
3345361993531,2cyclictest0-21swapper/220:08:002
3345365993433,1cyclictest0-21swapper/319:51:593
3345365993432,1cyclictest0-21swapper/323:23:583
3345365993432,1cyclictest0-21swapper/320:49:563
3345365993432,1cyclictest0-21swapper/320:08:593
3345365993432,1cyclictest0-21swapper/319:24:553
3345365993431,2cyclictest0-21swapper/321:53:593
3345361993432,1cyclictest0-21swapper/222:24:592
3345361993432,1cyclictest0-21swapper/222:24:582
3345361993431,2cyclictest0-21swapper/223:16:592
3345361993431,2cyclictest0-21swapper/222:40:582
3345361993431,2cyclictest0-21swapper/221:18:592
3345361993431,2cyclictest0-21swapper/220:44:552
3345361993431,2cyclictest0-21swapper/200:19:552
3345361993431,2cyclictest0-21swapper/200:19:552
3345357993429,3cyclictest3368110-21latency_hist20:20:010
3345357993426,6cyclictest3358329-21kworker/u8:2+flush-179:020:30:200
3345365993332,1cyclictest0-21swapper/319:45:593
3345365993331,1cyclictest0-21swapper/322:02:593
3345361993331,1cyclictest0-21swapper/220:59:592
3345361993330,2cyclictest0-21swapper/200:10:592
3345361993329,2cyclictest0-21swapper/200:25:592
3345365993230,1cyclictest0-21swapper/323:36:593
3345365993230,1cyclictest0-21swapper/322:09:593
3345357993227,3cyclictest714-21Xorg00:18:590
3345357993227,3cyclictest714-21Xorg00:18:590
3345365993129,1cyclictest0-21swapper/320:14:553
3345365993129,1cyclictest0-21swapper/300:24:593
3345365993124,5cyclictest3376351-21turbostat20:45:013
334536599310,28cyclictest0-21swapper/300:25:133
3345361993129,1cyclictest0-21swapper/221:54:582
3345361993128,2cyclictest0-21swapper/223:00:592
3345361993127,2cyclictest0-21swapper/221:35:132
334536199310,29cyclictest0-21swapper/219:25:592
334536199310,29cyclictest0-21swapper/219:25:592
3345357993127,3cyclictest3345997-21hwlatdetect19:10:160
3345365993026,2cyclictest0-21swapper/320:58:593
334536599300,28cyclictest0-21swapper/321:55:033
3345361993027,2cyclictest0-21swapper/223:20:122
3345361993027,2cyclictest0-21swapper/219:15:592
334536199300,2cyclictest0-21swapper/219:30:142
334536199300,28cyclictest0-21swapper/222:45:132
334536199300,28cyclictest0-21swapper/221:34:592
334536199300,28cyclictest0-21swapper/220:00:012
3345357993025,3cyclictest714-21Xorg23:43:590
3345365992927,1cyclictest0-21swapper/319:14:553
3345365992927,1cyclictest0-21swapper/300:18:593
3345365992927,1cyclictest0-21swapper/300:18:593
3345365992926,2cyclictest0-21swapper/320:18:583
334536599290,28cyclictest0-21swapper/320:30:023
334536599290,27cyclictest0-21swapper/323:45:123
334536599290,27cyclictest0-21swapper/300:05:113
3345361992927,1cyclictest0-21swapper/222:27:582
3345361992927,1cyclictest0-21swapper/219:20:122
3345361992926,2cyclictest0-21swapper/223:05:142
3345361992926,2cyclictest0-21swapper/220:27:592
3345361992926,2cyclictest0-21swapper/220:17:592
334536199290,27cyclictest0-21swapper/223:38:592
334536199290,27cyclictest0-21swapper/222:15:132
334536199290,27cyclictest0-21swapper/220:53:592
334536199290,27cyclictest0-21swapper/219:40:032
334536199290,27cyclictest0-21swapper/200:38:592
4577091280,6ptp4l441ktimers/322:35:003
4577091280,6ptp4l441ktimers/322:20:003
4577091280,5ptp4l441ktimers/300:15:013
3345365992826,1cyclictest0-21swapper/323:10:103
3345365992826,1cyclictest0-21swapper/321:09:593
3345365992826,1cyclictest0-21swapper/320:37:003
3345365992825,2cyclictest0-21swapper/320:00:013
334536599280,26cyclictest0-21swapper/323:30:133
334536599280,26cyclictest0-21swapper/322:50:123
334536599280,26cyclictest0-21swapper/321:25:123
334536599280,26cyclictest0-21swapper/319:40:023
3345361992825,2cyclictest0-21swapper/223:53:592
3345361992825,2cyclictest0-21swapper/223:40:132
3345361992825,2cyclictest0-21swapper/222:05:592
3345361992825,2cyclictest0-21swapper/220:46:592
3345361992825,2cyclictest0-21swapper/220:11:592
3345361992824,2cyclictest0-21swapper/223:57:592
334536199280,2cyclictest0-21swapper/221:10:132
334536199280,2cyclictest0-21swapper/220:00:012
334536199280,26cyclictest0-21swapper/223:10:102
334536199280,26cyclictest0-21swapper/220:36:002
334536199280,26cyclictest0-21swapper/200:05:112
334536199280,1cyclictest0-21swapper/221:45:592
4577091270,5ptp4l441ktimers/322:10:013
3345365992725,1cyclictest0-21swapper/323:05:133
3345365992721,4cyclictest3394105-21turbostat21:40:003
334536199270,25cyclictest0-21swapper/223:33:592
334536199270,24cyclictest0-21swapper/222:00:002
3345357992724,2cyclictest3429743-21kworker/u8:1+events_unbound00:10:140
4577091260,6ptp4l61490irq/134-eno1-TxRx-020:55:003
3345365992623,2cyclictest0-21swapper/323:55:593
3345361992623,2cyclictest0-21swapper/223:26:002
3345361992623,2cyclictest0-21swapper/222:51:002
3345361992623,2cyclictest0-21swapper/221:40:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-023:05:013
4577091250,5ptp4l61490irq/134-eno1-TxRx-022:24:563
4577091250,5ptp4l61490irq/134-eno1-TxRx-022:24:553
4577091250,3ptp4l441ktimers/321:20:013
3345361992522,2cyclictest0-21swapper/220:20:592
3345361992521,2cyclictest0-21swapper/221:25:592
334536199250,2cyclictest0-21swapper/222:14:542
3345365992422,1cyclictest0-21swapper/321:22:003
334536599240,1cyclictest0-21swapper/322:26:593
3345361992421,2cyclictest0-21swapper/223:45:592
3345361992421,2cyclictest0-21swapper/221:07:002
3345361992321,1cyclictest0-21swapper/222:32:002
3345361992321,1cyclictest0-21swapper/221:04:552
3345361992320,2cyclictest0-21swapper/222:55:132
3345357991915,2cyclictest0-21swapper/019:10:020
4577191180,3getstats0-21swapper/319:35:213
3345361991411,2cyclictest0-21swapper/219:13:592
334536199119,1cyclictest0-21swapper/222:39:582
33453619930,2cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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