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2026-05-11 - 20:11
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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 Mon May 11, 2026 12:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
320781899111101,7cyclictest3227168-21latency_hist08:10:020
3207818999484,7cyclictest1213033-21systemd-journal09:55:000
3207818999182,6cyclictest3230357-21latency_hist08:20:000
3207823999081,7cyclictest3285266-21latency_hist11:10:011
3207823998578,5cyclictest3252940-21kworker/u8:3+flush-179:009:45:131
3207823998573,9cyclictest1213033-21systemd-journal08:20:001
3207823998475,7cyclictest3301190-21apt-get11:58:361
3207823998374,7cyclictest3215995-21latency_hist07:35:011
3207823998074,5cyclictest3227406-21kworker/u8:1+flush-179:008:45:001
3207823997969,8cyclictest3272507-21/usr/sbin/munin10:30:251
3207823997872,5cyclictest3302817-21kworker/u8:1+flush-179:012:19:551
3207818997869,7cyclictest3219472-21apt-get07:45:120
3207818997869,6cyclictest3240147-21kworker/u8:0+flush-179:009:00:160
3207823997569,4cyclictest3242295-21kworker/u8:1+flush-179:009:05:161
3207823997564,9cyclictest3283421-21latency_hist11:05:011
3207823997466,6cyclictest3212569-21apt-get07:25:001
3207823997464,8cyclictest1213033-21systemd-journal07:40:011
3207823997360,11cyclictest3240147-21kworker/u8:0+flush-179:008:55:171
3207823997265,4cyclictest3294800-21kworker/u8:2+flush-179:011:45:161
3207818997264,6cyclictest3278620-21kworker/u8:1+flush-179:010:55:010
3207818997263,6cyclictest1213033-21systemd-journal10:20:010
3207823997165,4cyclictest3248155-21kworker/u8:0+events_unbound09:25:141
3207823997058,10cyclictest3252940-21kworker/u8:3+events_unbound10:20:001
3207823996963,2cyclictest0-21swapper/112:14:591
3207818996961,6cyclictest3295376-21diskstats11:40:170
3207818996958,9cyclictest3302817-21kworker/u8:1+flush-179:012:15:000
3207818996860,4cyclictest3299628-21kworker/u8:3+flush-179:011:55:210
3207823996758,7cyclictest3251324-21latency_hist09:25:011
3207818996759,5cyclictest3194857-21kworker/u8:2+flush-179:007:20:230
3207823996660,4cyclictest3228799-21kworker/u8:3+flush-179:008:45:231
3207818996658,5cyclictest3299574-21kworker/u8:0+flush-179:012:00:230
3207818996657,6cyclictest3214406-21latency_hist07:30:010
3207823996459,3cyclictest3235369-21kworker/u8:0+flush-179:008:35:211
3207818996454,7cyclictest3302817-21kworker/u8:1+flush-179:012:15:220
3207823996360,2cyclictest0-21swapper/109:02:001
3207823996357,5cyclictest3257669-21kworker/u8:0+flush-179:009:50:181
3207823996349,10cyclictest3221036-21kworker/u8:2+flush-179:008:00:131
3207818996357,4cyclictest3282068-21kworker/u8:3+flush-179:011:15:180
3207818996351,10cyclictest3214665-21apt-get07:30:120
3207824996258,3cyclictest0-21swapper/212:27:592
3207823996255,5cyclictest3217594-21kworker/u8:0+flush-179:007:55:191
3207818996255,5cyclictest3302817-21kworker/u8:1+flush-179:012:25:000
3207818996255,5cyclictest3252940-21kworker/u8:3+flush-179:010:20:230
3207818996254,6cyclictest3257669-21kworker/u8:0+flush-179:009:50:000
3207823996155,4cyclictest3285522-21apt-get11:10:121
3207823996155,4cyclictest3228799-21kworker/u8:3+flush-179:008:20:161
3207823996152,7cyclictest510-21rs:main1
3207818996153,6cyclictest3291894-21kworker/u8:0+flush-179:011:35:230
3207828996058,1cyclictest0-21swapper/312:27:593
320782899591,52cyclictest67-21kworker/3:1+events11:09:563
3207823995953,4cyclictest1213033-21systemd-journal12:34:361
3207818995855,2cyclictest0-21swapper/012:36:590
3207818995851,5cyclictest3217594-21kworker/u8:0+flush-179:008:10:160
3207818995848,7cyclictest3227406-21kworker/u8:1+events_unbound08:25:020
320781899581,55cyclictest1-21systemd07:51:360
3207823995752,4cyclictest3305994-21kworker/u8:2+flush-179:012:39:561
3207823995751,4cyclictest3252940-21kworker/u8:3+flush-179:010:10:181
3207823995751,4cyclictest3242295-21kworker/u8:1+flush-179:009:10:231
3207823995750,5cyclictest3291894-21kworker/u8:0+flush-179:011:35:181
3207823995750,4cyclictest3240147-21kworker/u8:0+flush-179:008:50:211
3207823995650,4cyclictest3217594-21kworker/u8:0+flush-179:007:54:541
3207823995646,8cyclictest1213033-21systemd-journal11:35:001
3207818995653,2cyclictest0-21swapper/008:40:590
3207828995552,2cyclictest0-21swapper/312:14:593
3207823995551,3cyclictest3194857-21kworker/u8:2+events_unbound07:15:241
3207823995550,4cyclictest3267722-21kworker/u8:0+flush-179:010:45:231
3207823995548,5cyclictest3293210-21kworker/u8:1+events_unbound11:50:231
3207823995544,9cyclictest3290305-21apt-get11:25:111
3207818995447,5cyclictest3248155-21kworker/u8:0+events_unbound09:20:240
3207824995351,1cyclictest0-21swapper/212:14:592
3207823995344,7cyclictest3277052-21latency_hist10:45:001
3207818995347,4cyclictest3248375-21apt-get09:15:120
3207818995343,8cyclictest3302817-21kworker/u8:1+flush-179:012:05:220
3207818995343,8cyclictest3302817-21kworker/u8:1+flush-179:012:05:220
3207818995341,10cyclictest1213033-21systemd-journal11:50:000
3207824995248,3cyclictest0-21swapper/209:01:592
3207823995247,4cyclictest3272248-21kworker/u8:2+events_unbound10:35:191
3207823995247,4cyclictest3217594-21kworker/u8:0+events_unbound08:10:241
3207823995245,5cyclictest1213033-21systemd-journal07:49:361
3207818995246,4cyclictest3194857-21kworker/u8:2+flush-179:007:38:370
3207823995144,5cyclictest3302817-21kworker/u8:1+flush-179:012:20:251
3207818995142,6cyclictest3240147-21kworker/u8:0+flush-179:008:50:220
3207828995048,1cyclictest0-21swapper/309:02:003
3207823995044,5cyclictest3252940-21kworker/u8:3+events_unbound10:20:141
3207823995043,5cyclictest3248155-21kworker/u8:0+flush-179:009:30:221
231999500,40rtkit-daemon3207167-21ntp_192.168.11407:05:270
4577091490,13ptp4l441ktimers/307:09:563
3207823994943,4cyclictest3194857-21kworker/u8:2+events_unbound07:10:161
3207823994942,5cyclictest3194857-21kworker/u8:2+flush-179:007:25:121
3207818994943,4cyclictest3290085-21kworker/u8:2+events_unbound11:30:130
3207818994943,4cyclictest3282068-21kworker/u8:3+flush-179:011:10:170
3207818994940,7cyclictest3228799-21kworker/u8:3+flush-179:008:20:210
3207818994939,7cyclictest3264122-21kworker/u8:2+events_unbound10:05:150
3207823994843,4cyclictest3252940-21kworker/u8:3+flush-179:010:25:251
3207823994843,3cyclictest3252940-21kworker/u8:3+flush-179:009:40:121
3207818994844,3cyclictest3267722-21kworker/u8:0+events_unbound10:45:200
3207818994839,7cyclictest3235369-21kworker/u8:0+events_unbound08:35:140
320782899470,45cyclictest3259543-21turbostat09:50:003
320782399475,40cyclictest1-21systemd12:25:361
3207823994742,4cyclictest3217594-21kworker/u8:0+flush-179:007:40:191
3207823994741,4cyclictest3231945-21kworker/u8:2+flush-179:008:30:261
3207818994738,7cyclictest1213033-21systemd-journal09:10:000
3207823994641,4cyclictest3242295-21kworker/u8:1+flush-179:009:15:161
3207818994643,2cyclictest714-21Xorg11:25:590
3207818994640,5cyclictest3242295-21kworker/u8:1+flush-179:009:10:200
3207818994640,5cyclictest3231945-21kworker/u8:2+events_unbound08:30:240
3207818994638,6cyclictest1213033-21systemd-journal07:17:360
3207818994637,7cyclictest3278620-21kworker/u8:1+flush-179:011:05:230
3207823994540,4cyclictest3299574-21kworker/u8:0+events_unbound12:00:221
3207823994540,4cyclictest3240210-21kworker/u8:2+flush-179:009:35:441
3207823994538,6cyclictest3252940-21kworker/u8:3+events_unbound09:55:201
3207823994535,7cyclictest3294800-21kworker/u8:2+events_unbound11:40:181
3207818994539,5cyclictest3267722-21kworker/u8:0+events_unbound11:00:230
3207818994539,4cyclictest3225599-21awk08:05:010
3207818994538,5cyclictest3305994-21kworker/u8:2+flush-179:012:30:280
3207818994438,5cyclictest3261151-21kworker/u8:1+flush-179:010:00:250
3207828994338,4cyclictest3241765-21turbostat08:55:003
320782899430,4cyclictest3283434-21turbostat11:05:003
3207823994338,4cyclictest3228799-21kworker/u8:3+events_unbound08:25:211
3207818994334,8cyclictest3272248-21kworker/u8:2+events_unbound10:40:140
3207818994334,7cyclictest3217594-21kworker/u8:0+flush-179:007:40:220
3207828994238,3cyclictest3294821-21turbostat11:40:003
320782499420,2cyclictest0-21swapper/211:24:592
3207823994236,5cyclictest3264122-21kworker/u8:2+events_unbound10:05:201
3207823994236,4cyclictest3282068-21kworker/u8:3+events_unbound11:20:151
3207818994236,4cyclictest3282068-21kworker/u8:3+flush-179:011:20:170
3207818994235,5cyclictest3272248-21kworker/u8:2+flush-179:010:35:220
320781899421,39cyclictest3240183-21perf08:50:010
320782899410,38cyclictest0-21swapper/308:40:593
3207824994139,1cyclictest0-21swapper/208:55:012
3207818994134,6cyclictest3194857-21kworker/u8:2+events_unbound07:10:240
3207818994133,6cyclictest3305994-21kworker/u8:2+flush-179:012:25:170
3207818994133,6cyclictest3224017-21latency_hist08:00:000
3207818994132,7cyclictest3252940-21kworker/u8:3+flush-179:009:40:200
3207828994033,5cyclictest3210986-21turbostat07:20:003
320782899400,38cyclictest3301260-21turbostat12:00:003
320782899400,38cyclictest3212572-21turbostat07:25:003
320782899400,31cyclictest0-21swapper/308:57:583
3207824994038,1cyclictest0-21swapper/211:40:002
3207823994035,4cyclictest3221036-21kworker/u8:2+flush-179:008:05:151
3207823994034,4cyclictest3264314-21latency_hist10:05:011
3207818994036,2cyclictest714-21Xorg10:34:000
3207828993932,5cyclictest3222394-21turbostat07:55:003
320782899390,3cyclictest3278646-21turbostat10:50:003
3207824993936,2cyclictest0-21swapper/209:47:002
320782499390,36cyclictest0-21swapper/208:40:582
320782499390,36cyclictest0-21swapper/207:21:592
320782499390,30cyclictest0-21swapper/212:37:592
3207828993835,2cyclictest0-21swapper/309:56:593
3207828993834,3cyclictest0-21swapper/307:32:593
320782899380,1cyclictest0-21swapper/310:29:553
320782499380,35cyclictest0-21swapper/207:40:002
320782499380,30cyclictest0-21swapper/207:50:592
320782499380,2cyclictest0-21swapper/208:07:002
320782499380,1cyclictest0-21swapper/208:57:592
3207828993735,1cyclictest0-21swapper/308:16:583
3207828993734,2cyclictest0-21swapper/312:31:593
320782899370,36cyclictest0-21swapper/308:03:593
3207824993734,2cyclictest0-21swapper/212:31:592
3207824993734,2cyclictest0-21swapper/209:56:582
3207824993734,2cyclictest0-21swapper/208:16:592
320782499370,35cyclictest0-21swapper/208:03:592
3207823993732,4cyclictest3304409-21kworker/u8:0+flush-179:012:06:101
3207823993732,4cyclictest3304409-21kworker/u8:0+flush-179:012:06:091
3207823993732,4cyclictest3278620-21kworker/u8:1+flush-179:010:55:181
3207823993732,4cyclictest3278620-21kworker/u8:1+flush-179:010:55:171
320782899360,1cyclictest0-21swapper/312:37:593
3207824993633,2cyclictest0-21swapper/207:32:592
3207824993632,2cyclictest0-21swapper/210:44:552
320782499360,2cyclictest0-21swapper/210:29:552
3207823993629,5cyclictest3267722-21kworker/u8:0+flush-179:010:50:201
3207818993632,2cyclictest714-21Xorg10:15:000
3207818993631,4cyclictest3240147-21kworker/u8:0+flush-179:008:55:270
320781899362,29cyclictest3298260-21apt-get11:50:130
3207828993531,3cyclictest0-21swapper/308:34:563
3207828993531,2cyclictest0-21swapper/312:15:593
3207828993530,3cyclictest0-21swapper/307:39:553
320782899350,1cyclictest0-21swapper/308:07:003
3207824993532,2cyclictest0-21swapper/210:47:592
3207824993532,1cyclictest0-21swapper/207:20:002
3207824993530,2cyclictest0-21swapper/210:13:592
3207818993530,4cyclictest3252940-21kworker/u8:3+events_unbound10:30:010
4577091340,3ptp4l61490irq/134-eno1-TxRx-010:50:143
3207828993432,1cyclictest0-21swapper/310:44:543
3207828993431,2cyclictest0-21swapper/310:04:003
3207824993431,2cyclictest0-21swapper/212:15:592
3207824993430,3cyclictest0-21swapper/211:11:002
3207828993330,2cyclictest0-21swapper/310:13:593
320782899330,32cyclictest0-21swapper/309:23:593
3207824993330,2cyclictest0-21swapper/210:04:002
3207824993330,2cyclictest0-21swapper/208:34:562
3207824993329,2cyclictest0-21swapper/208:24:542
320782499330,30cyclictest0-21swapper/209:23:592
3207818993330,2cyclictest3278620-21kworker/u8:1+events_unbound10:55:170
3207818993330,2cyclictest3278620-21kworker/u8:1+events_unbound10:55:170
320781899331,4cyclictest0-21swapper/009:30:120
3207828993230,1cyclictest0-21swapper/311:10:593
3207828993230,1cyclictest0-21swapper/308:24:553
3207828993228,2cyclictest0-21swapper/311:29:593
3207824993228,2cyclictest0-21swapper/209:12:592
4577091310,4ptp4l61490irq/134-eno1-TxRx-007:45:013
3207828993128,2cyclictest0-21swapper/309:12:583
320782899310,28cyclictest0-21swapper/311:45:593
3207824993128,2cyclictest0-21swapper/211:09:592
3207824993127,2cyclictest0-21swapper/210:16:592
3207818993128,2cyclictest3252900-21cron09:29:590
3207824993027,2cyclictest0-21swapper/211:29:592
3207824993026,2cyclictest0-21swapper/212:09:002
3207824993026,2cyclictest0-21swapper/212:08:592
3207824993026,2cyclictest0-21swapper/211:46:592
4577091290,7ptp4l441ktimers/310:35:023
4577091290,6ptp4l441ktimers/310:25:003
3207828992926,2cyclictest0-21swapper/312:08:593
3207828992926,2cyclictest0-21swapper/312:08:593
3207828992926,2cyclictest0-21swapper/310:15:133
3207828992924,4cyclictest3290060-21turbostat11:25:003
320782899290,28cyclictest0-21swapper/312:20:143
320782899290,28cyclictest0-21swapper/307:25:023
3207824992926,2cyclictest0-21swapper/208:25:142
320782499290,2cyclictest0-21swapper/211:56:592
320782499290,2cyclictest0-21swapper/207:25:022
320782499290,27cyclictest0-21swapper/211:15:152
320782499290,19cyclictest0-21swapper/210:32:592
3207818992924,4cyclictest3240210-21kworker/u8:2+flush-179:009:35:200
4577091280,7ptp4l441ktimers/308:39:563
3207828992824,2cyclictest0-21swapper/308:25:023
320782899280,26cyclictest0-21swapper/310:05:593
320782899280,1cyclictest0-21swapper/311:15:153
320782899280,1cyclictest0-21swapper/309:28:593
320782499280,26cyclictest0-21swapper/212:20:142
320782499280,26cyclictest0-21swapper/207:40:142
320781899280,1cyclictest0-21swapper/009:56:590
4577091270,7ptp4l61490irq/134-eno1-TxRx-009:34:593
4577091270,7ptp4l61490irq/134-eno1-TxRx-008:15:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-007:50:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-007:15:013
4577091270,6ptp4l441ktimers/312:05:013
4577091270,6ptp4l441ktimers/311:35:003
4577091270,6ptp4l441ktimers/309:45:013
4577091270,6ptp4l441ktimers/307:59:553
4577091270,5ptp4l441ktimers/309:19:563
3207828992724,2cyclictest3299609-21turbostat11:55:003
3207828992724,1cyclictest0-21swapper/309:50:593
320782899270,26cyclictest0-21swapper/310:33:003
3207824992723,2cyclictest0-21swapper/209:34:552
320782499270,2cyclictest0-21swapper/209:28:592
320782499270,25cyclictest0-21swapper/210:36:582
320782499270,24cyclictest0-21swapper/210:06:002
320782499270,24cyclictest0-21swapper/207:49:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-011:44:563
4577091260,6ptp4l61490irq/134-eno1-TxRx-009:10:003
4577091260,5ptp4l441ktimers/308:49:563
4577091260,4ptp4l61490irq/134-eno1-TxRx-011:00:013
4577091260,4ptp4l61490irq/134-eno1-TxRx-011:00:013
3207824992623,2cyclictest0-21swapper/212:01:592
3207824992623,2cyclictest0-21swapper/209:50:592
3207824992622,2cyclictest0-21swapper/209:39:582
320782499260,2cyclictest0-21swapper/211:43:592
320782499260,24cyclictest0-21swapper/210:53:582
3207824992522,2cyclictest0-21swapper/211:02:592
3207824992522,2cyclictest0-21swapper/208:39:592
3207824992522,2cyclictest0-21swapper/207:55:592
3207824992522,1cyclictest0-21swapper/209:20:002
3207828992421,2cyclictest0-21swapper/309:37:593
3207824992421,2cyclictest0-21swapper/208:11:592
231999230,13rtkit-daemon23940-21sendmail-mta07:06:521
3207824992220,1cyclictest0-21swapper/211:35:002
3207824992018,1cyclictest0-21swapper/209:45:012
3207824992017,2cyclictest0-21swapper/207:12:592
3207824991815,2cyclictest0-21swapper/209:09:592
3207824991815,2cyclictest0-21swapper/208:49:002
3207824991714,2cyclictest0-21swapper/210:24:592
32078249970,2cyclictest0-21swapper/211:52:452
32078249970,1cyclictest0-21swapper/210:55:312
32078249970,1cyclictest0-21swapper/210:55:302
32078249950,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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