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2026-08-27 - 23:59
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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 Aug 27, 2026 12:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
343865799158124,22cyclictest3496852-21latency_hist10:10:011
343865799149138,8cyclictest1213033-21systemd-journal07:20:011
343865399140132,5cyclictest3458434-21kworker/u8:4+flush-179:008:50:010
343865399130119,8cyclictest3517795-21latency_hist11:15:010
343865799129118,8cyclictest3485707-21latency_hist09:35:021
343865399120105,12cyclictest3441890-21apt-get07:20:000
343865799119111,5cyclictest3441945-21kworker/u8:0+events_unbound08:00:251
343865799119105,11cyclictest1213033-21systemd-journal12:25:001
343865799119105,11cyclictest1213033-21systemd-journal12:25:001
343865799118107,8cyclictest3455208-21latency_hist08:00:011
343865399116106,7cyclictest3458399-21latency_hist08:10:010
343865799115104,8cyclictest3488900-21latency_hist09:45:011
343865399112103,5cyclictest3522273-21kworker/u8:0+events_unbound12:00:010
343865399112103,5cyclictest3522273-21kworker/u8:0+events_unbound12:00:010
34386539911181,19cyclictest1213033-21systemd-journal11:05:010
343865799110101,6cyclictest3453618-21latency_hist07:55:011
34386579910999,7cyclictest3443735-21latency_hist07:25:011
34386579910494,7cyclictest3523840-21journal-offline11:30:201
34386539910391,9cyclictest3521002-21apt-get11:25:000
34386539910292,7cyclictest1213033-21systemd-journal10:45:010
34386539910290,9cyclictest3472717-21latency_hist08:55:000
34386579910192,6cyclictest3504787-21kworker/u8:2+flush-179:010:45:161
34386579910091,7cyclictest3450452-21latency_hist07:45:011
34386579910086,11cyclictest1213033-21systemd-journal11:00:011
34386539910095,3cyclictest3504787-21kworker/u8:2+flush-179:010:55:230
3438657999990,6cyclictest3531027-21/usr/sbin/munin11:55:241
3438657999990,6cyclictest3531027-21/usr/sbin/munin11:55:231
3438657999790,5cyclictest3537148-21kworker/u8:0+flush-179:012:30:171
3438657999385,6cyclictest3477733-21kworker/u8:1+flush-179:009:35:161
3438657999385,6cyclictest3477733-21kworker/u8:1+flush-179:009:35:151
3438657999382,8cyclictest3458657-21apt-get08:10:091
3438657999285,5cyclictest3541937-21latency_hist12:30:011
3438657999282,7cyclictest3527618-21latency_hist11:45:011
3438653999282,7cyclictest3432302-21kworker/u8:1+events_unbound07:20:020
3438657999180,8cyclictest3535560-21kworker/u8:2+flush-179:012:10:211
3438653999083,6cyclictest3481737-21kworker/u8:2+flush-179:010:05:240
3438657998981,6cyclictest3458377-21kworker/u8:2+flush-179:008:20:211
3438657998974,12cyclictest1213033-21systemd-journal10:20:001
3438657998875,11cyclictest3458434-21kworker/u8:4+events_unbound08:50:251
3438657998780,4cyclictest3494703-21kworker/u8:1+flush-179:010:00:221
3438657998780,4cyclictest3494703-21kworker/u8:1+flush-179:010:00:211
3438657998779,6cyclictest3498470-21kworker/u8:3+flush-179:010:20:231
3438657998779,5cyclictest3432302-21kworker/u8:1+flush-179:007:25:221
3438657998681,4cyclictest3432302-21kworker/u8:1+flush-179:008:05:261
3438657998676,7cyclictest3438408-21latency_hist07:10:021
3438657998581,3cyclictest3515668-21kworker/u8:0+events_unbound11:05:231
3438657998577,6cyclictest3441945-21kworker/u8:0+flush-179:007:50:001
3438653998574,8cyclictest3519456-21kworker/u8:3+flush-179:011:25:020
3438657998477,5cyclictest3519456-21kworker/u8:3+events_unbound11:45:251
3438657998460,21cyclictest3534240-21apt-get12:05:111
3438653998477,4cyclictest3535560-21kworker/u8:2+flush-179:012:20:230
3438653998477,4cyclictest3535560-21kworker/u8:2+flush-179:012:20:230
3438657998376,6cyclictest3477733-21kworker/u8:1+flush-179:009:45:261
3438657998274,6cyclictest3472751-21kworker/u8:0+flush-179:009:10:231
3438653998274,5cyclictest3472751-21kworker/u8:0+flush-179:009:00:140
3438653998171,6cyclictest3526696-21kworker/u8:1+flush-179:012:05:190
3438653998169,9cyclictest1213033-21systemd-journal08:25:000
3438657997973,4cyclictest3501888-21apt-get10:25:121
3438657997973,4cyclictest3501888-21apt-get10:25:111
3438653997969,8cyclictest3543781-21apt-get12:35:100
3438653997968,8cyclictest3537412-21apt-get12:15:120
3438657997871,5cyclictest3504787-21kworker/u8:2+flush-179:011:00:211
3438653997870,6cyclictest3458434-21kworker/u8:4+flush-179:008:25:200
3438657997769,5cyclictest1213033-21systemd-journal12:02:081
3438653997771,4cyclictest3504787-21kworker/u8:2+events_unbound10:45:250
3438653997669,5cyclictest3461629-21kworker/u8:1+flush-179:008:30:150
3438653997667,6cyclictest3458377-21kworker/u8:2+flush-179:008:35:190
3438657997569,4cyclictest3472751-21kworker/u8:0+flush-179:009:00:161
3438653997569,4cyclictest3494703-21kworker/u8:1+flush-179:010:30:310
3438653997568,5cyclictest3477733-21kworker/u8:1+flush-179:009:25:160
3438653997566,6cyclictest3481737-21kworker/u8:2+flush-179:009:50:120
3438653997565,8cyclictest3450706-21apt-get07:45:120
3438657997368,3cyclictest3458434-21kworker/u8:4+flush-179:008:55:261
3438653997365,6cyclictest3448786-21gzip07:35:570
3438653997364,7cyclictest3476169-21apt-get09:05:120
3438653997362,8cyclictest3458434-21kworker/u8:4+flush-179:008:15:010
3438653997362,5cyclictest3504787-21kworker/u8:2+events_unbound10:35:240
3438657997260,9cyclictest1213033-21systemd-journal10:34:591
3438653997262,8cyclictest510-21rs:main0
3438657997165,5cyclictest3522273-21kworker/u8:0+flush-179:011:40:001
3438657997165,4cyclictest3460242-21apt-get08:15:121
3438653997165,5cyclictest3540387-21kworker/u8:3+events_unbound12:25:190
3438657997063,5cyclictest3458434-21kworker/u8:4+flush-179:008:35:141
3438653997061,7cyclictest3497109-21apt-get10:10:130
3438657996962,5cyclictest3529458-21apt-get11:50:111
3438653996962,5cyclictest3484380-21apt-get09:30:120
3438653996958,8cyclictest3477733-21kworker/u8:1+flush-179:009:20:010
3438653996863,4cyclictest3441945-21kworker/u8:0+flush-179:007:50:200
3438653996862,4cyclictest3481737-21kworker/u8:2+events_unbound09:40:250
3438653996860,5cyclictest3516209-21latency_hist11:10:010
3438653996856,8cyclictest3481737-21kworker/u8:2+events_unbound09:55:190
3438662996759,5cyclictest3464780-21turbostat08:30:003
3438657996761,4cyclictest3458434-21kworker/u8:4+flush-179:008:25:221
3438653996760,5cyclictest3502678-21kworker/u8:0+flush-179:010:30:010
3438653996760,5cyclictest3502678-21kworker/u8:0+flush-179:010:30:000
3438653996759,5cyclictest3432302-21kworker/u8:1+flush-179:007:55:140
3438658996662,2cyclictest0-21swapper/207:44:592
3438657996660,3cyclictest0-21swapper/109:24:591
3438657996559,4cyclictest3432302-21kworker/u8:1+flush-179:007:35:571
3438657996558,5cyclictest3458377-21kworker/u8:2+flush-179:008:40:261
3438657996556,7cyclictest1213033-21systemd-journal09:55:001
3438653996559,5cyclictest3432302-21kworker/u8:1+events_unbound07:25:240
3438653996558,5cyclictest3522273-21kworker/u8:0+events_unbound11:50:000
3438653996553,10cyclictest3537148-21kworker/u8:0+flush-179:012:30:150
3438658996359,3cyclictest0-21swapper/209:31:582
3438653996256,5cyclictest3504800-21kworker/u8:3+flush-179:010:54:550
3438653996256,4cyclictest3519456-21kworker/u8:3+flush-179:011:30:140
3438653996254,6cyclictest3477733-21kworker/u8:1+events_unbound09:45:250
3438657996155,4cyclictest3537148-21kworker/u8:0+flush-179:012:15:211
3438653996154,4cyclictest3472751-21kworker/u8:0+flush-179:009:10:150
3438658996055,2cyclictest0-21swapper/209:25:002
3438657996055,4cyclictest3504787-21kworker/u8:2+flush-179:010:39:561
3438657996054,4cyclictest3504787-21kworker/u8:2+flush-179:011:20:141
3438657996053,6cyclictest3504800-21kworker/u8:3+flush-179:010:40:131
3438662995855,2cyclictest0-21swapper/311:56:593
3438662995855,2cyclictest0-21swapper/311:56:593
3438657995853,3cyclictest3494703-21kworker/u8:1+flush-179:010:11:091
3438657995852,4cyclictest3441945-21kworker/u8:0+events_unbound07:30:131
3438657995852,4cyclictest3441945-21kworker/u8:0+events_unbound07:30:131
3438657995852,4cyclictest3438462-21kworker/u8:3+flush-179:007:10:201
3438653995851,5cyclictest3494703-21kworker/u8:1+flush-179:010:20:160
3438658995753,2cyclictest0-21swapper/210:24:002
3438653995751,4cyclictest3519456-21kworker/u8:3+flush-179:011:35:200
3438653995750,5cyclictest3498470-21kworker/u8:3+flush-179:010:15:170
3438653995748,7cyclictest3432302-21kworker/u8:1+flush-179:008:05:010
3438657995653,2cyclictest0-21swapper/108:46:581
3438657995650,4cyclictest3537148-21kworker/u8:0+flush-179:012:35:241
3438653995549,5cyclictest3481737-21kworker/u8:2+events_unbound09:35:250
3438653995549,5cyclictest3481737-21kworker/u8:2+events_unbound09:35:240
3438653995546,4cyclictest3522273-21kworker/u8:0+flush-179:011:55:010
3438653995545,8cyclictest3468218-21apt-get08:40:120
3438658995450,2cyclictest0-21swapper/208:15:592
3438653995448,5cyclictest3441945-21kworker/u8:0+flush-179:007:40:150
3438653995343,8cyclictest1213033-21systemd-journal10:05:000
3438653995343,8cyclictest1213033-21systemd-journal10:05:000
3438662995250,1cyclictest0-21swapper/307:44:593
3438662995248,2cyclictest0-21swapper/309:31:593
3438658995249,2cyclictest0-21swapper/208:46:592
3438658995248,2cyclictest0-21swapper/207:31:592
3438658995248,2cyclictest0-21swapper/207:31:592
3438653995244,6cyclictest3458434-21kworker/u8:4+flush-179:008:15:210
3438657995140,9cyclictest1213033-21systemd-journal09:20:001
3438653995045,4cyclictest3458434-21kworker/u8:4+flush-179:008:55:240
3438662994941,6cyclictest3488913-21turbostat09:45:003
4577091480,13ptp4l441ktimers/307:10:013
3438662994845,2cyclictest0-21swapper/309:25:003
3438657994843,4cyclictest3519456-21kworker/u8:3+flush-179:011:25:161
3438657994843,4cyclictest3481737-21kworker/u8:2+events_unbound09:55:221
3438657994839,7cyclictest3504787-21kworker/u8:2+flush-179:011:15:211
3438653994841,5cyclictest3535560-21kworker/u8:2+flush-179:012:14:090
3438653994744,2cyclictest3441945-21kworker/u8:0+events_unbound07:30:150
3438653994744,2cyclictest3441945-21kworker/u8:0+events_unbound07:30:150
3438653994739,5cyclictest1-21systemd12:02:090
3438662994643,2cyclictest0-21swapper/310:23:593
3438662994639,5cyclictest3477505-21turbostat09:10:013
3438658994439,2cyclictest0-21swapper/207:36:592
3438657994438,5cyclictest3458434-21kworker/u8:4+flush-179:009:05:141
3438657994438,4cyclictest3465025-21apt-get08:30:101
3438657994338,3cyclictest3483919-21systemd-run09:30:011
343865399430,28cyclictest3526287-21apt-get11:40:120
3438658994238,2cyclictest0-21swapper/212:07:002
3438662994139,1cyclictest0-21swapper/308:15:593
3438662994038,1cyclictest0-21swapper/308:46:593
3438662994038,1cyclictest0-21swapper/307:31:593
3438662994038,1cyclictest0-21swapper/307:31:593
343866299400,38cyclictest3452047-21turbostat07:50:003
343865399401,2cyclictest714-21Xorg11:19:590
343865899390,36cyclictest0-21swapper/209:46:582
343865899390,1cyclictest0-21swapper/210:14:582
3438657993935,3cyclictest0-21swapper/110:53:001
3438662993836,1cyclictest0-21swapper/309:19:593
3438662993835,2cyclictest0-21swapper/311:42:593
3438658993834,2cyclictest0-21swapper/210:32:592
343865899380,36cyclictest0-21swapper/209:38:002
343865899380,36cyclictest0-21swapper/209:38:002
343865899380,30cyclictest0-21swapper/207:54:592
3438658993734,2cyclictest0-21swapper/212:26:592
343865899370,2cyclictest0-21swapper/210:58:592
343865799370,36cyclictest0-21swapper/111:14:561
3438662993634,1cyclictest0-21swapper/307:19:593
343866299360,35cyclictest0-21swapper/310:19:593
3438658993633,2cyclictest0-21swapper/211:14:552
3438658993633,2cyclictest0-21swapper/209:18:582
3438658993632,2cyclictest0-21swapper/209:57:592
343865899360,1cyclictest0-21swapper/208:10:002
3438662993533,1cyclictest0-21swapper/312:34:553
3438662993532,2cyclictest0-21swapper/312:37:593
343866299350,1cyclictest0-21swapper/310:54:553
343866299350,1cyclictest0-21swapper/307:11:593
3438658993533,1cyclictest0-21swapper/207:14:592
3438658993532,1cyclictest0-21swapper/208:29:592
3438662993432,1cyclictest0-21swapper/310:09:593
3438658993432,1cyclictest0-21swapper/211:10:002
3438658993430,2cyclictest0-21swapper/212:19:582
3438662993331,1cyclictest0-21swapper/310:56:003
3438658993330,2cyclictest0-21swapper/210:53:002
3438658993329,2cyclictest0-21swapper/211:48:582
3438653993330,2cyclictest0-21swapper/009:25:000
3438662993230,1cyclictest0-21swapper/307:24:593
3438662993229,2cyclictest0-21swapper/310:14:593
3438662993227,4cyclictest3458415-21turbostat08:10:003
3438658993229,2cyclictest0-21swapper/208:10:592
3438662993129,1cyclictest0-21swapper/310:28:003
3438662993129,1cyclictest0-21swapper/310:27:593
3438662993129,1cyclictest0-21swapper/309:38:003
3438662993129,1cyclictest0-21swapper/309:37:593
3438662993128,2cyclictest0-21swapper/307:36:593
343865899310,27cyclictest0-21swapper/208:04:592
4577091300,7ptp4l441ktimers/309:05:013
3438662993028,1cyclictest0-21swapper/312:06:593
3438662993028,1cyclictest0-21swapper/307:54:593
3438658993027,2cyclictest0-21swapper/210:09:552
3438658993027,1cyclictest0-21swapper/209:29:592
3438658993026,2cyclictest0-21swapper/209:52:002
3438658993026,2cyclictest0-21swapper/209:04:592
343865899300,27cyclictest0-21swapper/212:36:592
343865899300,27cyclictest0-21swapper/210:35:122
343865899300,26cyclictest0-21swapper/211:25:012
4577091290,8ptp4l61490irq/134-eno1-TxRx-011:29:553
4577091290,7ptp4l441ktimers/310:35:003
3438662992927,1cyclictest0-21swapper/309:46:593
3438662992926,2cyclictest3493677-21turbostat10:00:003
3438662992926,2cyclictest0-21swapper/312:20:143
3438662992926,2cyclictest0-21swapper/312:20:143
3438662992926,2cyclictest0-21swapper/310:35:133
3438662992925,2cyclictest0-21swapper/312:29:553
3438662992925,1cyclictest0-21swapper/308:30:123
343866299290,28cyclictest0-21swapper/311:48:583
343866299290,27cyclictest0-21swapper/311:00:133
3438658992926,2cyclictest0-21swapper/211:50:592
3438658992926,2cyclictest0-21swapper/211:20:142
3438658992926,2cyclictest0-21swapper/208:41:582
3438658992926,2cyclictest0-21swapper/208:34:592
3438658992925,2cyclictest0-21swapper/209:08:002
343865899290,27cyclictest0-21swapper/210:40:102
4577091280,7ptp4l441ktimers/310:05:003
4577091280,7ptp4l441ktimers/310:05:003
4577091280,6ptp4l441ktimers/311:10:003
4577091280,6ptp4l441ktimers/309:14:553
4577091280,6ptp4l441ktimers/308:24:543
4577091280,5ptp4l441ktimers/309:30:003
4577091280,5ptp4l441ktimers/308:55:013
343866299280,3cyclictest3526012-21turbostat11:39:593
343866299280,26cyclictest0-21swapper/308:10:113
3438658992826,1cyclictest0-21swapper/208:59:592
3438658992825,2cyclictest0-21swapper/210:48:592
3438658992825,2cyclictest0-21swapper/207:15:132
343865899280,2cyclictest0-21swapper/212:20:142
343865899280,2cyclictest0-21swapper/212:20:142
343865899280,26cyclictest0-21swapper/212:30:142
343865899280,26cyclictest0-21swapper/207:55:592
4577091270,7ptp4l61490irq/134-eno1-TxRx-012:20:013
4577091270,7ptp4l61490irq/134-eno1-TxRx-009:00:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-012:05:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-008:04:553
4577091270,6ptp4l441ktimers/311:19:573
4577091270,6ptp4l441ktimers/311:15:013
4577091270,6ptp4l441ktimers/307:30:013
3438662992725,1cyclictest0-21swapper/311:51:003
3438662992725,1cyclictest0-21swapper/308:39:593
343866299270,26cyclictest3509857-21turbostat10:50:003
343866299270,26cyclictest0-21swapper/310:40:113
3438658992725,1cyclictest0-21swapper/211:34:582
3438658992724,2cyclictest0-21swapper/211:00:582
3438658992724,2cyclictest0-21swapper/210:25:122
3438658992724,2cyclictest0-21swapper/210:25:122
343865899270,25cyclictest0-21swapper/207:21:592
343865899270,24cyclictest0-21swapper/207:28:592
4577091260,5ptp4l61490irq/134-eno1-TxRx-011:25:003
4577091260,5ptp4l441ktimers/309:54:553
3438658992623,2cyclictest0-21swapper/210:00:132
3438658992623,2cyclictest0-21swapper/210:00:122
343865899260,2cyclictest0-21swapper/212:12:592
4577091250,5ptp4l441ktimers/311:34:573
4577091250,4ptp4l441ktimers/312:14:553
4577091250,4ptp4l441ktimers/307:59:563
4577091250,3ptp4l61490irq/134-eno1-TxRx-008:45:013
3438658992522,2cyclictest0-21swapper/212:00:002
3438658992522,2cyclictest0-21swapper/211:59:592
3438658992522,2cyclictest0-21swapper/211:40:592
3438658992522,2cyclictest0-21swapper/208:55:002
3438658992522,2cyclictest0-21swapper/207:48:592
3438658992521,2cyclictest0-21swapper/210:16:592
3438658992521,2cyclictest0-21swapper/209:40:132
3438658992320,2cyclictest0-21swapper/211:16:582
3438658992320,2cyclictest0-21swapper/208:36:592
231999210,11rtkit-daemon908065-21snmpd07:06:140
3438658992018,1cyclictest0-21swapper/212:04:582
3438658992018,1cyclictest0-21swapper/208:25:002
3438658992016,2cyclictest0-21swapper/209:11:002
3438658991714,2cyclictest0-21swapper/211:37:592
34386589941,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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