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2026-08-19 - 20:41
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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 Wed Aug 19, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
277934599148137,8cyclictest2820596-21latency_hist09:15:010
277934799145135,7cyclictest2823792-21latency_hist09:25:011
277934799140126,11cyclictest2880545-21latency_hist12:20:001
277934799138126,8cyclictest2809196-21latency_hist08:40:011
277934599135128,5cyclictest2804402-21kworker/u8:0+flush-179:008:25:000
277934799131120,8cyclictest1213033-21systemd-journal10:50:241
277934799123118,4cyclictest2789553-21kworker/u8:3+flush-179:007:45:251
277934599123113,7cyclictest2815829-21latency_hist09:00:010
277934599123111,9cyclictest2784257-21apt-get07:25:000
277934799121115,4cyclictest2854534-21kworker/u8:0+events_unbound11:00:261
277934599121112,6cyclictest2819010-21latency_hist09:10:010
277934599120111,6cyclictest2854809-21/usr/sbin/munin11:00:240
277934799119114,3cyclictest2830467-21kworker/u8:3+events_unbound10:00:191
277934599116104,9cyclictest510-21rs:main0
277934799115109,4cyclictest2843401-21kworker/u8:0+events_unbound10:45:161
2779345991141,109cyclictest1-21systemd10:30:010
277934599113102,7cyclictest2851411-21kworker/u8:2+flush-179:011:00:010
277934799112103,6cyclictest2867336-21apt-get11:38:101
277934799111106,4cyclictest2804402-21kworker/u8:0+events_unbound08:30:131
277934599111101,8cyclictest2875479-21kworker/u8:2+flush-179:012:20:140
277934599110103,5cyclictest2860942-21latency_hist11:20:010
27793459910799,4cyclictest2804402-21kworker/u8:0+flush-179:008:25:170
27793459910697,6cyclictest2863078-21kworker/u8:1+flush-179:012:05:250
27793459910595,7cyclictest2810793-21latency_hist08:45:020
27793459910595,6cyclictest2817397-21kworker/u8:1+flush-179:009:40:250
27793459910493,8cyclictest2811029-21kworker/u8:2+events_unbound10:05:000
27793479910399,3cyclictest2786131-21kworker/u8:0+events_unbound07:38:451
27793459910291,8cyclictest2812381-21latency_hist08:50:000
27793459910194,5cyclictest2863078-21kworker/u8:1+flush-179:011:55:230
27793479910095,4cyclictest2817397-21kworker/u8:1+events_unbound09:25:211
27793459910093,5cyclictest2759694-21kworker/u8:1+flush-179:007:10:230
27793459910089,8cyclictest1213033-21systemd-journal07:55:200
2779347999994,4cyclictest2817397-21kworker/u8:1+events_unbound09:05:281
2779347999985,10cyclictest2843401-21kworker/u8:0+flush-179:010:35:011
2779345999991,5cyclictest2830467-21kworker/u8:3+flush-179:010:10:250
2779347999887,7cyclictest510-21rs:main1
2779347999886,10cyclictest2872564-21apt-get11:55:131
2779345999884,7cyclictest2851411-21kworker/u8:2+flush-179:011:05:180
2779347999792,4cyclictest2843401-21kworker/u8:0+events_unbound10:43:461
2779345999788,6cyclictest2869127-21kworker/u8:0+flush-179:012:25:240
2779345999788,6cyclictest2842072-21/usr/sbin/munin10:20:170
2779345999691,3cyclictest2817397-21kworker/u8:1+flush-179:009:25:230
2779347999590,4cyclictest2811029-21kworker/u8:2+events_unbound08:59:451
2779345999586,6cyclictest2779179-21latency_hist07:10:010
2779347999487,4cyclictest2830467-21kworker/u8:3+flush-179:010:05:241
2779345999487,4cyclictest2781790-21kworker/u8:2+flush-179:007:35:240
2779345999484,7cyclictest2811029-21kworker/u8:2+flush-179:009:45:230
2779347999287,4cyclictest2848176-21kworker/u8:3+events_unbound11:20:191
2779347999287,4cyclictest2846577-21kworker/u8:2+events_unbound10:38:471
2779347999281,9cyclictest2869127-21kworker/u8:0+flush-179:012:05:001
2779345999286,3cyclictest2828796-21kworker/u8:0+events_unbound09:40:010
2779345999285,5cyclictest2800954-21kworker/u8:1+flush-179:008:50:250
2779347999187,3cyclictest2811029-21kworker/u8:2+events_unbound09:53:311
2779347999186,4cyclictest2800954-21kworker/u8:1+events_unbound08:54:551
2779347999186,4cyclictest2797589-21kworker/u8:3+events_unbound08:26:461
2779347999184,5cyclictest2800954-21kworker/u8:1+events_unbound08:44:561
2779345999185,4cyclictest2797589-21kworker/u8:3+flush-179:008:15:230
2779345999183,5cyclictest2863078-21kworker/u8:1+events_unbound11:45:150
2779347999080,4cyclictest2792499-21kworker/u8:0+events_unbound08:05:171
2779347998984,4cyclictest2869127-21kworker/u8:0+events_unbound12:22:461
2779347998984,4cyclictest2817397-21kworker/u8:1+events_unbound09:38:461
2779347998983,4cyclictest2863078-21kworker/u8:1+events_unbound11:30:191
2779347998983,3cyclictest2759694-21kworker/u8:1+events_unbound07:15:191
2779345998983,4cyclictest2817397-21kworker/u8:1+flush-179:009:20:210
2779347998883,4cyclictest2848176-21kworker/u8:3+events_unbound11:44:471
2779347998883,4cyclictest2830467-21kworker/u8:3+events_unbound10:28:331
2779347998874,10cyclictest2835190-21latency_hist10:00:001
2779345998882,4cyclictest2782552-21kworker/u8:3+flush-179:007:25:440
2779345998881,5cyclictest2843465-21kworker/u8:1+events_unbound10:35:000
2779347998783,3cyclictest2817397-21kworker/u8:1+events_unbound09:47:441
2779347998783,3cyclictest2781790-21kworker/u8:2+events_unbound07:24:561
2779347998782,4cyclictest2851411-21kworker/u8:2+flush-179:010:55:261
2779347998782,4cyclictest2817397-21kworker/u8:1+events_unbound09:00:441
2779347998779,5cyclictest2822184-21latency_hist09:20:011
2779345998782,3cyclictest2843401-21kworker/u8:0+flush-179:010:40:170
2779345998780,4cyclictest2781790-21kworker/u8:2+events_unbound07:55:010
2779345998779,6cyclictest2843401-21kworker/u8:0+flush-179:010:40:010
2779347998681,4cyclictest2869127-21kworker/u8:0+events_unbound12:11:451
2779347998681,4cyclictest2804402-21kworker/u8:0+events_unbound08:23:441
2779347998681,4cyclictest2781790-21kworker/u8:2+events_unbound07:51:451
2779347998581,3cyclictest2859812-21kworker/u8:0+events_unbound11:18:451
2779347998580,4cyclictest2869127-21kworker/u8:0+events_unbound11:46:461
2779345998576,6cyclictest2811029-21kworker/u8:2+flush-179:009:57:450
2779345998575,7cyclictest2830467-21kworker/u8:3+flush-179:010:15:250
2779345998575,7cyclictest2830467-21kworker/u8:3+flush-179:010:15:240
2779345998573,9cyclictest2869127-21kworker/u8:0+events_unbound12:00:280
2779347998479,4cyclictest2789553-21kworker/u8:3+events_unbound07:43:091
2779345998477,4cyclictest2863078-21kworker/u8:1+flush-179:011:35:220
2779347998379,3cyclictest2869127-21kworker/u8:0+events_unbound11:51:461
2779347998379,3cyclictest2869127-21kworker/u8:0+events_unbound11:51:451
2779345998377,4cyclictest2820631-21kworker/u8:3+events_unbound09:15:210
2779347998278,3cyclictest2883950-21kworker/u8:1+events_unbound12:32:451
2779347998277,4cyclictest2869127-21kworker/u8:0+events_unbound12:08:451
2779347998277,4cyclictest2811029-21kworker/u8:2+events_unbound10:21:451
2779345998276,4cyclictest2848176-21kworker/u8:3+events_unbound10:55:010
2779345998174,5cyclictest2875479-21kworker/u8:2+flush-179:012:15:180
2779345998173,6cyclictest2811029-21kworker/u8:2+flush-179:009:52:440
2779347998065,11cyclictest1213033-21systemd-journal08:20:001
2779347997950,18cyclictest1213033-21systemd-journal08:03:451
2779345997973,3cyclictest2792499-21kworker/u8:0+flush-179:008:05:220
2779345997972,4cyclictest2863078-21kworker/u8:1+events_unbound11:45:000
2779345997971,5cyclictest2843401-21kworker/u8:0+events_unbound10:45:170
2779345997871,5cyclictest2863078-21kworker/u8:1+flush-179:011:35:000
2779345997869,6cyclictest2859812-21kworker/u8:0+flush-179:011:25:170
2779345997865,9cyclictest2838390-21apt-get10:10:000
2779345997771,4cyclictest2869127-21kworker/u8:0+events_unbound12:15:000
2779347997671,4cyclictest2817397-21kworker/u8:1+events_unbound09:42:431
2779347997564,7cyclictest510-21rs:main1
2779345997569,4cyclictest2851411-21kworker/u8:2+flush-179:011:10:170
2779345997469,4cyclictest2848176-21kworker/u8:3+flush-179:011:20:190
2779345997467,4cyclictest2817397-21kworker/u8:1+events_unbound09:35:000
2779345997366,4cyclictest2775925-21kworker/u8:0+flush-179:007:15:140
2779345997361,8cyclictest2885564-21latency_hist12:35:020
2779347997161,8cyclictest2794574-21/usr/sbin/munin07:55:161
2779347997066,3cyclictest2859812-21kworker/u8:0+events_unbound11:25:271
2779347996863,4cyclictest2786131-21kworker/u8:0+events_unbound07:33:061
2779347996859,7cyclictest1213033-21systemd-journal12:38:451
2779345996860,6cyclictest2804402-21kworker/u8:0+flush-179:008:30:200
2779347996656,7cyclictest2851411-21kworker/u8:2+flush-179:011:10:171
2779345996654,8cyclictest2792499-21kworker/u8:0+flush-179:008:00:220
2779347996456,5cyclictest2819247-21/usr/sbin/munin09:10:171
2779347996257,4cyclictest2817397-21kworker/u8:1+events_unbound09:30:021
2779345996255,5cyclictest2869127-21kworker/u8:0+flush-179:011:54:560
2779345996255,5cyclictest2869127-21kworker/u8:0+flush-179:011:54:550
2779345996155,4cyclictest2789553-21kworker/u8:3+events_unbound07:45:200
2779345995952,5cyclictest2800954-21kworker/u8:1+flush-179:008:35:250
2779347995854,3cyclictest2848176-21kworker/u8:3+events_unbound11:08:471
2779345995853,4cyclictest2883950-21kworker/u8:1+events_unbound12:35:190
2779345995853,3cyclictest2781790-21kworker/u8:2+flush-179:007:43:440
2779347995651,4cyclictest2759694-21kworker/u8:1+events_unbound07:10:041
2779345995646,7cyclictest2800954-21kworker/u8:1+flush-179:008:15:010
2779347995349,3cyclictest2830467-21kworker/u8:3+events_unbound10:18:331
2779347995349,3cyclictest2830467-21kworker/u8:3+events_unbound10:18:331
4577091490,14ptp4l61490irq/134-eno1-TxRx-007:10:003
2779347994840,6cyclictest2800954-21kworker/u8:1+events_unbound08:15:001
2779345994641,4cyclictest2817397-21kworker/u8:1+flush-179:009:04:550
2779350994542,2cyclictest0-21swapper/208:37:592
2779347994541,3cyclictest2811029-21kworker/u8:2+events_unbound08:49:061
2779347994440,3cyclictest2781790-21kworker/u8:2+events_unbound07:28:011
2779352994341,1cyclictest0-21swapper/308:03:593
277935299410,39cyclictest2856164-21turbostat11:05:003
277935099410,1cyclictest0-21swapper/208:04:592
277935299400,38cyclictest2867557-21turbostat11:39:593
2779352993934,4cyclictest2873905-21turbostat11:59:593
2779352993934,4cyclictest2784252-21turbostat07:25:003
277935299390,37cyclictest2830435-21turbostat09:45:003
4577091380,6ptp4l431rcuc/309:20:003
2779350993834,2cyclictest0-21swapper/212:33:592
277935099380,36cyclictest0-21swapper/211:07:592
277935099380,35cyclictest0-21swapper/207:19:592
277935299370,35cyclictest0-21swapper/312:12:593
2779350993734,2cyclictest0-21swapper/211:11:592
2779350993734,2cyclictest0-21swapper/209:52:582
2779350993734,2cyclictest0-21swapper/209:49:552
2779350993734,2cyclictest0-21swapper/208:17:592
277935099370,35cyclictest0-21swapper/212:15:592
277935099370,35cyclictest0-21swapper/211:28:592
277935099370,35cyclictest0-21swapper/210:03:592
277935099370,1cyclictest0-21swapper/207:31:592
2779352993634,1cyclictest0-21swapper/309:50:593
2779350993634,1cyclictest0-21swapper/212:30:002
2779350993634,1cyclictest0-21swapper/211:04:592
2779350993634,1cyclictest0-21swapper/209:09:592
2779350993633,2cyclictest0-21swapper/212:02:592
2779350993633,2cyclictest0-21swapper/208:52:592
2779350993632,2cyclictest0-21swapper/207:23:592
2779352993532,2cyclictest2848210-21sleep10:40:013
277935299350,1cyclictest0-21swapper/310:53:583
2779350993531,2cyclictest0-21swapper/209:13:592
2779352993432,1cyclictest0-21swapper/308:59:553
2779350993431,2cyclictest0-21swapper/211:53:592
2779350993431,2cyclictest0-21swapper/211:53:592
2779350993431,2cyclictest0-21swapper/208:42:592
4577091330,27ptp4l441ktimers/312:35:143
2779352993331,1cyclictest0-21swapper/308:11:583
2779352993330,2cyclictest0-21swapper/307:39:583
2779352993327,5cyclictest2806020-21turbostat08:30:003
2779350993330,2cyclictest0-21swapper/210:48:592
2779350993229,2cyclictest0-21swapper/210:44:002
231999320,20rtkit-daemon908065-21snmpd07:08:221
4577091310,7ptp4l441ktimers/312:05:013
2779350993129,1cyclictest0-21swapper/211:45:002
2779350993128,2cyclictest0-21swapper/207:41:592
2779350993127,2cyclictest0-21swapper/210:05:592
277935099310,28cyclictest0-21swapper/211:38:102
4577091300,8ptp4l441ktimers/310:19:563
4577091300,8ptp4l441ktimers/310:19:553
2779352993028,1cyclictest0-21swapper/309:29:593
2779352993026,3cyclictest2823797-21turbostat09:25:003
277935299300,28cyclictest0-21swapper/312:20:013
277935299300,28cyclictest0-21swapper/309:05:143
2779350993027,2cyclictest0-21swapper/211:55:142
2779350993027,2cyclictest0-21swapper/211:20:122
2779350993027,2cyclictest0-21swapper/209:25:592
2779350993027,2cyclictest0-21swapper/207:55:142
2779350993027,2cyclictest0-21swapper/207:50:032
2779350993027,2cyclictest0-21swapper/207:36:592
2779350993026,2cyclictest0-21swapper/210:25:122
2779350993026,2cyclictest0-21swapper/209:15:132
277935099300,2cyclictest0-21swapper/212:10:022
277935099300,28cyclictest0-21swapper/209:00:132
4577091290,7ptp4l441ktimers/307:15:003
2779352992926,2cyclictest0-21swapper/312:15:153
2779352992924,4cyclictest2786106-21turbostat07:30:003
2779352992921,6cyclictest2845030-21turbostat10:30:003
277935299290,28cyclictest0-21swapper/311:08:583
277935299290,28cyclictest0-21swapper/309:10:133
277935299290,28cyclictest0-21swapper/307:45:133
277935299290,27cyclictest0-21swapper/312:30:143
277935299290,27cyclictest0-21swapper/311:25:143
277935299290,27cyclictest0-21swapper/310:10:033
277935299290,27cyclictest0-21swapper/309:45:143
2779350992926,2cyclictest0-21swapper/212:35:132
2779350992926,2cyclictest0-21swapper/212:10:012
2779350992926,2cyclictest0-21swapper/208:30:122
2779350992925,2cyclictest0-21swapper/209:40:132
277935099290,27cyclictest0-21swapper/212:20:022
277935099290,27cyclictest0-21swapper/208:55:012
277935099290,27cyclictest0-21swapper/208:10:122
277935099290,27cyclictest0-21swapper/207:25:022
277935099290,26cyclictest0-21swapper/211:15:142
277935099290,1cyclictest0-21swapper/208:05:022
4577091280,6ptp4l441ktimers/310:04:553
4577091280,5ptp4l61490irq/134-eno1-TxRx-011:20:013
2779352992826,1cyclictest0-21swapper/312:27:593
2779352992825,2cyclictest0-21swapper/311:45:123
2779352992822,5cyclictest2810813-21turbostat08:45:013
277935299280,27cyclictest0-21swapper/308:20:133
277935299280,27cyclictest0-21swapper/308:05:023
277935299280,27cyclictest0-21swapper/307:43:593
277935299280,27cyclictest0-21swapper/307:32:593
277935299280,26cyclictest0-21swapper/311:30:133
277935299280,26cyclictest0-21swapper/311:10:133
277935299280,26cyclictest0-21swapper/308:50:133
277935299280,26cyclictest0-21swapper/307:50:023
2779350992825,2cyclictest0-21swapper/211:45:112
2779350992825,2cyclictest0-21swapper/208:26:592
4577091270,6ptp4l441ktimers/310:00:003
4577091270,6ptp4l441ktimers/309:40:013
4577091270,5ptp4l441ktimers/311:00:013
4577091270,5ptp4l441ktimers/310:44:563
2779352992725,1cyclictest0-21swapper/311:22:583
2779350992724,2cyclictest0-21swapper/207:48:592
2779350992724,2cyclictest0-21swapper/207:14:592
2779350992723,2cyclictest0-21swapper/210:23:582
2779350992723,2cyclictest0-21swapper/210:17:592
2779350992723,2cyclictest0-21swapper/210:17:592
277935099270,25cyclictest0-21swapper/210:53:592
277935099270,25cyclictest0-21swapper/210:36:582
4577091260,6ptp4l61490irq/134-eno1-TxRx-010:34:553
4577091260,6ptp4l441ktimers/310:24:563
4577091260,6ptp4l441ktimers/308:00:013
4577091260,5ptp4l61490irq/134-eno1-TxRx-011:54:563
4577091260,5ptp4l61490irq/134-eno1-TxRx-011:54:553
4577091260,5ptp4l61490irq/134-eno1-TxRx-010:09:563
4577091260,5ptp4l441ktimers/312:09:563
277935299260,1cyclictest0-21swapper/308:39:593
2779350992623,2cyclictest0-21swapper/209:36:582
277935099260,2cyclictest0-21swapper/210:59:542
277935099260,24cyclictest0-21swapper/208:24:592
4577091250,6ptp4l61490irq/134-eno1-TxRx-007:20:013
2779352992523,1cyclictest0-21swapper/311:40:583
2779352992523,1cyclictest0-21swapper/308:16:593
2779352992520,4cyclictest2807605-21turbostat08:35:003
277935299250,2cyclictest0-21swapper/309:04:593
2779350992522,2cyclictest0-21swapper/209:31:592
2779350992521,2cyclictest0-21swapper/209:20:592
4577091240,5ptp4l61490irq/134-eno1-TxRx-008:49:563
4577091240,4ptp4l441ktimers/309:34:563
2779350992421,2cyclictest0-21swapper/211:32:592
4577091230,2ptp4l441ktimers/310:49:553
2779350992219,2cyclictest0-21swapper/210:12:002
2779350992118,2cyclictest0-21swapper/210:30:132
2779350991915,2cyclictest0-21swapper/209:57:002
27793509963,2cyclictest0-21swapper/208:48:092
27793509930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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