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2026-01-04 - 02:31
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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 Sat Jan 03, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3442457999787,7cyclictest3522739-21latency_hist11:15:011
3442454999672,20cyclictest3471823-21latency_hist08:40:020
3442454999672,20cyclictest3471823-21latency_hist08:40:010
3442457998884,3cyclictest3477368-21kworker/u8:1+events_unbound09:10:281
3442457998877,9cyclictest3482658-21kworker/u8:0+flush-179:009:55:201
3442457998581,3cyclictest3471802-21kworker/u8:0+events_unbound08:40:241
3442457998479,4cyclictest3484053-21kworker/u8:3+events_unbound09:15:251
3442457998176,4cyclictest3542086-21kworker/u8:0+events_unbound12:20:221
3442454998167,11cyclictest266-21systemd-journal09:45:010
3442457997970,6cyclictest3455391-21latency_hist07:50:001
3442457997945,33cyclictest714-21Xorg09:35:591
3442454997969,7cyclictest3525937-21latency_hist11:25:010
3442457997873,4cyclictest3482658-21kworker/u8:0+events_unbound09:30:251
3442457997873,3cyclictest3458816-21kworker/u8:2+events_unbound08:20:181
3442454997870,5cyclictest3477416-21kworker/u8:3+flush-179:009:00:010
3442457997768,6cyclictest3524355-21latency_hist11:20:011
3442457997672,3cyclictest3484053-21kworker/u8:3+events_unbound09:20:231
3442457997671,4cyclictest3501515-21kworker/u8:2+events_unbound10:15:201
3442457997671,4cyclictest3501515-21kworker/u8:2+events_unbound10:15:191
3442457997466,3cyclictest3443990-21kworker/u8:3+events_unbound07:15:241
3442457997465,7cyclictest3482177-21apt-get09:09:591
3442457997268,3cyclictest3450569-21kworker/u8:3+events_unbound07:35:331
3442457997267,4cyclictest3477416-21kworker/u8:3+events_unbound08:55:211
3442457997260,9cyclictest3520892-21latency_hist11:10:021
3442454997259,11cyclictest266-21systemd-journal08:25:000
3442457997166,4cyclictest3449308-21kworker/u8:0+events_unbound07:40:241
3442454996963,4cyclictest3475521-21kworker/u8:2+flush-179:008:55:010
3442457996762,4cyclictest3542086-21kworker/u8:0+flush-179:012:25:201
3442457996762,4cyclictest3530753-21kworker/u8:0+flush-179:011:50:261
3442457996762,4cyclictest3492101-21kworker/u8:3+events_unbound09:40:231
3442454996756,8cyclictest3537579-21/usr/sbin/munin12:00:250
3442454996756,8cyclictest266-21systemd-journal11:05:000
3442457996662,3cyclictest3519280-21kworker/u8:2+events_unbound11:20:221
3442457996561,3cyclictest3477416-21kworker/u8:3+events_unbound09:00:161
3442457996561,3cyclictest3461747-21kworker/u8:3+events_unbound08:10:161
3442457996560,4cyclictest3508135-21/usr/sbin/munin10:30:251
3442457996545,19cyclictest3524381-21kworker/u8:1+flush-179:012:09:551
3442457996452,10cyclictest3527569-21kworker/u8:3+flush-179:012:00:001
3442457996358,4cyclictest3543810-21kworker/u8:3+events_unbound12:30:201
3442457996358,4cyclictest3471802-21kworker/u8:0+flush-179:008:50:381
3442457996352,9cyclictest3511079-21apt-get10:40:001
3442454996353,7cyclictest3524381-21kworker/u8:1+flush-179:012:05:230
3442454996256,4cyclictest3482658-21kworker/u8:0+flush-179:009:29:560
3442462996157,2cyclictest0-21swapper/308:21:593
3442457996156,4cyclictest3447301-21kworker/u8:1+flush-179:007:29:551
3442454996151,8cyclictest3479225-21/usr/sbin/munin09:00:220
3442457996055,4cyclictest3497290-21kworker/u8:2+events_unbound10:00:281
3442457996055,4cyclictest3458816-21kworker/u8:2+events_unbound08:05:141
3442454996056,3cyclictest3484053-21kworker/u8:3+events_unbound09:20:180
3442454996052,6cyclictest3501515-21kworker/u8:2+flush-179:010:15:000
3442454996050,8cyclictest3458839-21apt-get08:00:120
3442457995956,2cyclictest714-21Xorg11:04:591
3442457995955,3cyclictest3509530-21kworker/u8:1+flush-179:010:59:551
3442457995955,3cyclictest3506347-21kworker/u8:3+events_unbound10:25:221
3442457995954,4cyclictest3435356-21kworker/u8:1+events_unbound07:12:321
3442454995846,9cyclictest3477368-21kworker/u8:1+flush-179:009:05:200
3442457995753,3cyclictest3454879-21kworker/u8:1+flush-179:007:50:261
3442460995654,1cyclictest0-21swapper/212:30:002
3442457995652,3cyclictest3543810-21kworker/u8:3+events_unbound12:35:161
3442457995651,4cyclictest3466851-21kworker/u8:3+events_unbound08:35:211
3442457995651,4cyclictest3466851-21kworker/u8:3+events_unbound08:35:211
3442454995649,4cyclictest3447301-21kworker/u8:1+flush-179:007:25:260
344245499560,54cyclictest1-21systemd07:35:000
3442457995551,3cyclictest3501515-21kworker/u8:2+flush-179:010:44:551
3442457995523,31cyclictest714-21Xorg10:50:591
3442457995450,3cyclictest3542086-21kworker/u8:0+events_unbound12:15:261
3442454995448,4cyclictest3477368-21kworker/u8:1+flush-179:009:10:170
3442454995350,2cyclictest3513176-21kworker/u8:3+events_unbound10:45:230
3442454995345,6cyclictest3542086-21kworker/u8:0+events_unbound12:30:240
3442454995343,8cyclictest3534405-21apt-get11:50:120
3442454995340,10cyclictest266-21systemd-journal12:20:000
3442457995248,3cyclictest3524381-21kworker/u8:1+events_unbound12:02:301
3442457995243,7cyclictest3445805-21/usr/sbin/munin07:20:241
3442457995146,4cyclictest3501515-21kworker/u8:2+flush-179:010:14:401
3442454995143,6cyclictest266-21systemd-journal08:09:310
3442454995142,6cyclictest3530717-21latency_hist11:40:010
3442457995046,3cyclictest3471802-21kworker/u8:0+events_unbound08:45:271
3442454995041,6cyclictest3443990-21kworker/u8:3+events_unbound07:15:260
3442457994944,4cyclictest3530753-21kworker/u8:0+flush-179:011:45:261
3442457994944,4cyclictest3454879-21kworker/u8:1+events_unbound08:04:311
3442457994941,6cyclictest266-21systemd-journal10:50:011
3442454994943,4cyclictest3501515-21kworker/u8:2+flush-179:010:35:000
3442454994940,6cyclictest3461747-21kworker/u8:3+events_unbound08:10:010
3442457994844,3cyclictest3527569-21kworker/u8:3+flush-179:011:42:311
3442457994843,4cyclictest3519280-21kworker/u8:2+events_unbound11:39:311
3442457994839,3cyclictest3482658-21kworker/u8:0+events_unbound09:45:021
3442454994840,6cyclictest3530955-21/usr/sbin/munin11:40:230
3442454994839,7cyclictest3493809-21/usr/sbin/munin09:45:230
3442454994837,8cyclictest510-21rs:main0
4577091470,13ptp4l441ktimers/307:09:563
4577091470,13ptp4l441ktimers/307:09:563
3442454994739,5cyclictest3454879-21kworker/u8:1+events_unbound07:55:210
3442457994637,5cyclictest0-21swapper/110:05:581
3442454994644,1cyclictest3506347-21kworker/u8:3+events_unbound10:25:260
3442454994641,4cyclictest3543810-21kworker/u8:3+flush-179:012:20:140
3442454994638,6cyclictest3442340-21latency_hist07:10:020
3442454994638,6cyclictest3442340-21latency_hist07:10:020
3442457994541,3cyclictest3465174-21kworker/u8:0+flush-179:008:30:271
3442454994537,5cyclictest3504960-21kworker/u8:0+flush-179:010:20:220
3442457994440,3cyclictest3524381-21kworker/u8:1+events_unbound11:32:321
3442457994439,4cyclictest3465174-21kworker/u8:0+events_unbound08:25:151
3442457994439,4cyclictest3450569-21kworker/u8:3+flush-179:007:34:551
3442454994439,3cyclictest3466851-21kworker/u8:3+flush-179:008:25:000
3442454994438,5cyclictest3542086-21kworker/u8:0+events_unbound12:25:180
3442454994438,4cyclictest3499927-21kworker/u8:1+flush-179:010:05:010
3442454994436,5cyclictest3458816-21kworker/u8:2+flush-179:008:15:170
3442454994436,5cyclictest3458816-21kworker/u8:2+flush-179:008:15:170
3442454994433,9cyclictest3455403-21basename07:50:010
3442454994433,9cyclictest3440727-21kworker/u8:0+events_unbound07:10:210
3442462994340,2cyclictest0-21swapper/307:17:583
3442457994339,3cyclictest3524381-21kworker/u8:1+flush-179:011:29:561
3442457994338,4cyclictest3524381-21kworker/u8:1+events_unbound12:11:061
3442454994337,4cyclictest1-21systemd10:58:300
3442454994336,5cyclictest3519280-21kworker/u8:2+events_unbound11:25:220
344245499430,42cyclictest1-21systemd11:10:010
3442457994238,3cyclictest3487460-21apt-get09:25:111
3442454994236,4cyclictest3488835-21kworker/u8:2+events_unbound09:34:590
3442457994134,5cyclictest3495394-21/usr/sbin/munin09:50:261
3442454994136,4cyclictest3443990-21kworker/u8:3+flush-179:007:22:300
344245499411,11cyclictest3514779-21apt-get10:50:150
344245499410,4cyclictest3495167-21turbostat09:54:550
3442462994034,4cyclictest3545319-21turbostat12:25:003
344246299400,39cyclictest0-21swapper/309:09:593
344246299400,38cyclictest3534161-21turbostat11:50:003
3442460994037,2cyclictest0-21swapper/211:39:552
3442457994032,6cyclictest3465212-21latency_hist08:20:021
3442457994032,6cyclictest3465212-21latency_hist08:20:021
3442454994035,4cyclictest3524381-21kworker/u8:1+flush-179:011:30:260
3442454994035,4cyclictest3496756-21turbostat09:59:550
3442454994034,4cyclictest3471802-21kworker/u8:0+events_unbound08:45:000
344245499401,2cyclictest714-21Xorg07:36:000
344246299390,4cyclictest3496756-21turbostat09:55:003
3442454993936,2cyclictest714-21Xorg10:08:590
3442454993934,3cyclictest3534158-21cut11:50:000
3442454993933,4cyclictest3482658-21kworker/u8:0+flush-179:009:35:220
3442454993933,4cyclictest3470210-21kworker/u8:2+flush-179:008:35:010
3442454993932,5cyclictest3482658-21kworker/u8:0+flush-179:009:15:150
3442454993931,6cyclictest3509530-21kworker/u8:1+events_unbound10:40:030
344245499390,37cyclictest3511095-21systemctl10:40:010
3442462993835,2cyclictest0-21swapper/312:25:593
3442460993835,2cyclictest0-21swapper/209:04:592
3442457993834,3cyclictest3454879-21kworker/u8:1+events_unbound07:57:321
3442454993832,5cyclictest3513176-21kworker/u8:3+flush-179:011:10:250
344246299370,36cyclictest0-21swapper/310:57:003
344246299370,36cyclictest0-21swapper/309:29:003
3442454993732,4cyclictest3501515-21kworker/u8:2+flush-179:010:15:160
3442454993732,4cyclictest3501515-21kworker/u8:2+flush-179:010:15:150
3442454993730,5cyclictest3527569-21kworker/u8:3+events_unbound11:55:130
3442462993634,1cyclictest0-21swapper/308:03:003
3442462993631,4cyclictest3504712-21turbostat10:20:013
3442462993631,4cyclictest3504712-21turbostat10:20:003
3442462993630,5cyclictest3550332-21turbostat12:40:013
344246299360,35cyclictest0-21swapper/310:38:003
344246299360,35cyclictest0-21swapper/309:59:553
3442460993633,2cyclictest0-21swapper/211:51:592
3442460993633,2cyclictest0-21swapper/210:15:592
3442460993633,2cyclictest0-21swapper/210:15:592
344246099360,1cyclictest0-21swapper/210:55:592
3442454993633,2cyclictest3524381-21kworker/u8:1+events_unbound12:10:240
3442454993627,7cyclictest3519280-21kworker/u8:2+events_unbound11:15:140
3442462993528,5cyclictest3524349-21turbostat11:20:003
344246299350,1cyclictest0-21swapper/308:07:593
344246099350,1cyclictest0-21swapper/212:35:592
3442462993432,1cyclictest0-21swapper/312:19:553
3442462993432,1cyclictest0-21swapper/310:04:593
3442462993432,1cyclictest0-21swapper/307:27:593
3442460993431,2cyclictest0-21swapper/212:01:592
3442460993431,2cyclictest0-21swapper/210:53:592
3442460993431,2cyclictest0-21swapper/208:57:592
3442460993430,2cyclictest0-21swapper/208:06:002
344246099340,26cyclictest0-21swapper/211:00:152
3442462993331,1cyclictest0-21swapper/312:34:553
3442462993331,1cyclictest0-21swapper/311:13:593
3442462993331,1cyclictest0-21swapper/310:41:593
3442462993329,2cyclictest0-21swapper/309:01:593
3442462993328,4cyclictest3532319-21turbostat11:45:003
3442460993326,6cyclictest0-21swapper/212:20:122
344246099330,31cyclictest0-21swapper/207:55:142
344246099330,26cyclictest0-21swapper/207:30:132
3442462993230,1cyclictest0-21swapper/311:24:553
344246299320,31cyclictest0-21swapper/312:04:593
3442460993229,2cyclictest0-21swapper/209:25:582
3442460993229,2cyclictest0-21swapper/208:17:592
3442460993229,2cyclictest0-21swapper/208:17:592
3442457993227,4cyclictest3504960-21kworker/u8:0+events_unbound10:21:321
3442462993129,1cyclictest0-21swapper/310:52:593
3442460993128,2cyclictest0-21swapper/210:34:552
344246099310,29cyclictest0-21swapper/211:42:592
344246099310,29cyclictest0-21swapper/209:56:592
344246099310,1cyclictest0-21swapper/208:40:142
3442454993125,5cyclictest3549553-21latency12:35:190
3442462993028,1cyclictest0-21swapper/311:35:003
344246299300,2cyclictest0-21swapper/308:50:003
3442460993028,1cyclictest0-21swapper/207:47:592
4577091290,7ptp4l441ktimers/310:15:003
4577091290,7ptp4l441ktimers/309:40:003
3442462992927,1cyclictest0-21swapper/307:35:213
3442462992926,2cyclictest0-21swapper/309:13:003
344246299290,27cyclictest0-21swapper/310:25:153
344246299290,27cyclictest0-21swapper/309:30:133
344246299290,27cyclictest0-21swapper/307:30:133
3442460992925,2cyclictest0-21swapper/207:53:592
3442460992921,6cyclictest0-21swapper/209:07:582
344246099290,27cyclictest0-21swapper/210:35:102
344246099290,27cyclictest0-21swapper/210:10:132
344246099290,27cyclictest0-21swapper/209:45:592
344246099290,27cyclictest0-21swapper/208:35:122
344246099290,27cyclictest0-21swapper/208:35:122
344246099290,27cyclictest0-21swapper/208:01:372
344246099290,22cyclictest0-21swapper/212:30:132
3442462992825,2cyclictest0-21swapper/311:35:143
3442462992825,2cyclictest0-21swapper/309:18:593
344246299280,27cyclictest0-21swapper/311:55:123
344246299280,27cyclictest0-21swapper/307:10:133
344246299280,26cyclictest0-21swapper/311:05:153
344246299280,26cyclictest0-21swapper/309:20:123
344246299280,26cyclictest0-21swapper/308:55:133
344246299280,26cyclictest0-21swapper/308:40:023
344246299280,26cyclictest0-21swapper/308:10:013
3442460992825,2cyclictest0-21swapper/212:05:142
3442460992825,2cyclictest0-21swapper/211:10:032
3442460992825,2cyclictest0-21swapper/210:06:582
3442460992825,2cyclictest0-21swapper/208:22:592
344246099280,2cyclictest0-21swapper/209:15:132
344246099280,27cyclictest0-21swapper/211:05:152
344246099280,26cyclictest0-21swapper/209:10:032
344246099280,26cyclictest0-21swapper/208:50:022
344246099280,26cyclictest0-21swapper/207:35:222
344246099280,26cyclictest0-21swapper/207:25:032
344246099280,1cyclictest0-21swapper/210:04:152
344246099280,1cyclictest0-21swapper/207:43:332
3442454992824,2cyclictest714-21Xorg07:54:580
4577091270,7ptp4l61490irq/134-eno1-TxRx-007:45:013
4577091270,7ptp4l441ktimers/310:24:553
4577091270,7ptp4l441ktimers/310:10:013
4577091270,6ptp4l441ktimers/308:35:013
4577091270,6ptp4l441ktimers/308:00:003
3442462992725,1cyclictest0-21swapper/308:50:023
3442462992725,1cyclictest0-21swapper/308:25:013
3442462992725,1cyclictest0-21swapper/307:23:593
344246299270,26cyclictest0-21swapper/311:26:593
344246299270,1cyclictest0-21swapper/312:10:143
344246299270,1cyclictest0-21swapper/312:05:143
3442460992724,2cyclictest0-21swapper/212:16:592
3442460992722,1cyclictest0-21swapper/208:13:372
3442454992722,3cyclictest0-21swapper/007:45:000
4577091260,7ptp4l61490irq/134-eno1-TxRx-011:05:013
4577091260,6ptp4l441ktimers/309:50:013
4577091260,6ptp4l441ktimers/309:45:003
4577091260,5ptp4l441ktimers/310:50:003
344246299261,2cyclictest4578291phc2sys08:18:393
344246299261,2cyclictest4578291phc2sys08:18:393
344246299260,24cyclictest0-21swapper/307:46:333
344246099260,24cyclictest0-21swapper/211:18:232
344246099260,24cyclictest0-21swapper/210:46:332
344246099260,24cyclictest0-21swapper/209:50:082
344246099260,24cyclictest0-21swapper/208:31:452
344246099260,24cyclictest0-21swapper/207:15:242
344246099260,1cyclictest0-21swapper/211:29:552
3442462992523,1cyclictest0-21swapper/310:33:363
344246299250,24cyclictest0-21swapper/308:36:493
344246299250,24cyclictest0-21swapper/308:36:493
344246299250,24cyclictest0-21swapper/307:51:043
3442460992523,1cyclictest0-21swapper/212:10:142
3442460992523,1cyclictest0-21swapper/211:20:442
3442460992522,2cyclictest0-21swapper/209:41:592
3442460992522,2cyclictest0-21swapper/209:34:462
344246099250,2cyclictest0-21swapper/208:47:362
344246099250,18cyclictest0-21swapper/209:35:592
3442462992421,2cyclictest0-21swapper/311:53:433
3442460992421,2cyclictest0-21swapper/209:22:392
3442460992421,2cyclictest0-21swapper/208:26:592
3442460992321,1cyclictest0-21swapper/207:15:002
3442460992320,2cyclictest0-21swapper/211:55:592
3442460992320,2cyclictest0-21swapper/211:31:502
3442460992220,1cyclictest0-21swapper/210:44:272
3442460992220,1cyclictest0-21swapper/210:21:592
3442460992219,2cyclictest0-21swapper/207:20:172
3442460992118,2cyclictest0-21swapper/210:28:592
344245799197,7cyclictest29-21ksoftirqd/107:10:011
344245799197,7cyclictest29-21ksoftirqd/107:10:011
3442460991614,1cyclictest0-21swapper/211:45:592
34424609920,1cyclictest0-21swapper/207:10:012
34424609920,1cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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