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2026-05-17 - 19:39
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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 376 highest latencies:
System rackeslot6.osadl.org (updated Sun May 17, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30735089910195,4cyclictest3158787-21kworker/u8:2+events_unbound12:05:001
3073506999589,4cyclictest3141639-21latency_hist10:40:010
3073508999488,5cyclictest3081342-21kworker/u8:1+events_unbound07:55:241
3073508999485,6cyclictest3167355-21kworker/u8:0+flush-179:012:15:191
3073508999485,5cyclictest3125243-21kworker/u8:3+events_unbound10:40:241
3073508999481,10cyclictest3122058-21kworker/u8:1+flush-179:010:00:011
3073508999178,10cyclictest3138191-21latency_hist10:30:001
3073506999182,7cyclictest3107155-21latency_hist08:55:010
3073508999083,4cyclictest3125243-21kworker/u8:3+events_unbound11:00:231
3073508998780,5cyclictest3155947-21kworker/u8:1+events_unbound11:35:221
3073506998777,6cyclictest3125243-21kworker/u8:3+flush-179:009:55:260
3073506998575,7cyclictest3099206-21latency_hist08:30:010
3073508998377,4cyclictest3130221-21kworker/u8:2+flush-179:010:15:251
3073506998374,7cyclictest3130237-21latency_hist10:05:010
3073508998275,5cyclictest3146438-21kworker/u8:0+flush-179:011:15:241
3073508998271,8cyclictest3158787-21kworker/u8:2+flush-179:011:45:151
3073506998272,7cyclictest3113783-21latency_hist09:15:010
3073506998271,7cyclictest3111938-21latency_hist09:10:010
3073508998173,6cyclictest3101334-21diskstats08:35:141
3073508998172,6cyclictest3081342-21kworker/u8:1+flush-179:007:50:011
3073508998172,6cyclictest3081342-21kworker/u8:1+flush-179:007:50:011
3073508998170,8cyclictest3159133-21kworker/u8:3+flush-179:011:40:201
3073508998073,4cyclictest3176958-21kworker/u8:0+events_unbound12:35:151
3073508997970,7cyclictest3146438-21kworker/u8:0+flush-179:011:25:141
3073508997872,5cyclictest3125243-21kworker/u8:3+events_unbound09:50:241
3073508997870,6cyclictest3071428-21kworker/u8:1+events_unbound07:15:251
3073508997767,7cyclictest3167129-21latency_hist12:00:011
3073508997766,4cyclictest3134972-21kworker/u8:0+flush-179:010:20:141
3073508997761,7cyclictest3084547-21kworker/u8:0+events_unbound08:55:251
3073508997670,4cyclictest3108181-21kworker/u8:2+flush-179:009:00:161
3073508997669,5cyclictest3114254-21kworker/u8:0+flush-179:009:35:221
3073508997669,5cyclictest3114254-21kworker/u8:0+events_unbound09:30:121
3073508997666,8cyclictest3143490-21apt-get10:45:111
3073506997668,6cyclictest3073649-21apt-get07:10:130
3073506997666,7cyclictest3175335-21latency_hist12:25:000
3073508997569,4cyclictest3114254-21kworker/u8:0+events_unbound09:40:261
3073506997565,7cyclictest3128886-21kworker/u8:0+flush-179:010:10:010
3073508997469,4cyclictest3146438-21kworker/u8:0+events_unbound11:10:291
3073508997469,3cyclictest3143280-21kworker/u8:1+events_unbound10:55:261
3073508997467,5cyclictest3155947-21kworker/u8:1+flush-179:011:35:011
3073508997466,6cyclictest3078212-21kworker/u8:3+events_unbound07:35:001
3073508997466,5cyclictest3081342-21kworker/u8:1+flush-179:008:05:221
3073508997368,4cyclictest3084547-21kworker/u8:0+events_unbound08:15:231
3073508997364,6cyclictest3168961-21apt-get12:05:111
3073508997268,3cyclictest3122058-21kworker/u8:1+events_unbound09:45:231
3073508997264,5cyclictest3081342-21kworker/u8:1+events_unbound07:50:031
3073506997254,15cyclictest3159142-21latency_hist11:35:010
3073508997165,4cyclictest3114254-21kworker/u8:0+flush-179:009:15:231
3073508997161,7cyclictest3084547-21kworker/u8:0+flush-179:008:40:191
3073508997064,4cyclictest3105546-21kworker/u8:1+events_unbound09:05:191
3073506997057,10cyclictest1213033-21systemd-journal09:25:000
3073508996964,3cyclictest3174301-21kworker/u8:1+flush-179:012:30:141
3073508996963,4cyclictest3128886-21kworker/u8:0+events_unbound10:00:261
3073508996960,6cyclictest3146438-21kworker/u8:0+flush-179:011:05:151
3073508996958,9cyclictest3099459-21apt-get08:30:111
3073506996959,7cyclictest1213033-21systemd-journal11:28:570
3073506996956,9cyclictest1213033-21systemd-journal11:00:010
3073508996855,4cyclictest3084547-21kworker/u8:0+flush-179:008:10:221
3073506996853,11cyclictest3108181-21kworker/u8:2+flush-179:009:00:170
3073508996760,4cyclictest3158787-21kworker/u8:2+events_unbound11:50:191
3073508996759,5cyclictest3105546-21kworker/u8:1+flush-179:008:50:191
3073508996659,4cyclictest3170278-21kworker/u8:3+events_unbound12:25:221
3073506996659,5cyclictest3143280-21kworker/u8:1+flush-179:010:50:230
3073506996656,7cyclictest3115380-21latency_hist09:20:010
3073508996557,6cyclictest3136640-21kworker/u8:2+flush-179:010:30:201
3073506996558,4cyclictest3180099-21latency_hist12:40:010
3073508996457,6cyclictest3174301-21kworker/u8:1+flush-179:012:20:251
3073508996456,6cyclictest3105546-21kworker/u8:1+events_unbound09:10:181
3073506996460,3cyclictest3146438-21kworker/u8:0+flush-179:011:05:250
3073506996450,11cyclictest3086153-21latency_hist07:50:010
3073506996450,11cyclictest3086153-21latency_hist07:50:010
3073508996358,4cyclictest3097028-21kworker/u8:1+events_unbound08:20:231
3073508996358,3cyclictest3130221-21kworker/u8:2+events_unbound10:10:211
3073508996355,6cyclictest3100825-21kworker/u8:2+events_unbound08:45:161
3073508996351,10cyclictest3078432-21apt-get07:25:121
3073508996351,10cyclictest3078432-21apt-get07:25:121
3073506996349,10cyclictest1213033-21systemd-journal12:05:000
3073506996245,14cyclictest3133407-21latency_hist10:15:010
3073508996153,6cyclictest3082982-21latency_hist07:40:011
3073508996056,3cyclictest3071428-21kworker/u8:1+events_unbound07:20:231
3073506996052,6cyclictest3155969-21latency_hist11:25:010
3073508995954,4cyclictest3125243-21kworker/u8:3+flush-179:010:55:011
3073506995956,2cyclictest714-21Xorg07:50:590
3073506995949,8cyclictest3081342-21kworker/u8:1+flush-179:007:40:000
3073508995851,5cyclictest3084547-21kworker/u8:0+flush-179:008:25:201
3073506995853,4cyclictest3174301-21kworker/u8:1+flush-179:012:25:110
3073506995750,5cyclictest3125243-21kworker/u8:3+flush-179:010:45:240
3073506995738,16cyclictest3083220-21/usr/sbin/munin07:40:190
3073508995652,3cyclictest3116647-21kworker/u8:2+flush-179:009:20:221
3073508995651,4cyclictest3125243-21kworker/u8:3+events_unbound10:05:231
3073506995649,5cyclictest3146438-21kworker/u8:0+events_unbound11:15:260
3073506995647,8cyclictest3125243-21kworker/u8:3+flush-179:010:40:150
3073506995549,5cyclictest3159133-21kworker/u8:3+flush-179:011:50:210
3073508995439,13cyclictest3167355-21kworker/u8:0+flush-179:012:15:001
3073506995448,5cyclictest3170278-21kworker/u8:3+flush-179:012:10:170
3073506995447,5cyclictest3136640-21kworker/u8:2+events_unbound10:30:130
3073506995443,9cyclictest1213033-21systemd-journal09:40:000
3073506995431,21cyclictest3094406-21systemd-run08:15:010
3073512995346,5cyclictest3167132-21turbostat12:00:013
3073508995349,3cyclictest3081342-21kworker/u8:1+events_unbound07:40:231
3073508995348,4cyclictest3149638-21kworker/u8:2+events_unbound11:20:191
3073506995244,6cyclictest3114254-21kworker/u8:0+flush-179:009:25:200
4577091500,13ptp4l441ktimers/307:09:553
3073512995045,4cyclictest3123621-21turbostat09:45:003
3073506995042,6cyclictest3158787-21kworker/u8:2+flush-179:011:45:200
3073506995042,5cyclictest3089569-21kworker/u8:3+flush-179:008:00:270
3073506995041,7cyclictest3092803-21kworker/u8:3+events_unbound08:35:010
3073506994939,8cyclictest3177179-21apt-get12:30:110
3073506994935,12cyclictest1213033-21systemd-journal10:19:530
3073508994843,4cyclictest3114254-21kworker/u8:0+events_unbound09:25:251
3073506994840,5cyclictest3149602-21latency_hist11:05:020
3073506994839,7cyclictest3092763-21kworker/u8:2+flush-179:008:10:000
3073506994736,9cyclictest3165767-21apt-get11:55:100
307350699471,3cyclictest3081363-21cron07:35:000
3073508994641,4cyclictest3071913-21kworker/u8:2+events_unbound07:14:161
3073506994635,9cyclictest3158787-21kworker/u8:2+flush-179:011:40:010
3073506994633,11cyclictest3125226-21http09:50:010
3073506994519,8cyclictest1213033-21systemd-journal07:25:000
3073506994435,7cyclictest1213033-21systemd-journal08:41:580
307350699441,42cyclictest3102389-21munin-run08:40:010
307350699441,2cyclictest3120431-21grep09:35:000
3073508994339,3cyclictest3136640-21kworker/u8:2+flush-179:010:35:301
3073506994336,5cyclictest3159133-21kworker/u8:3+flush-179:011:40:160
3073508994238,3cyclictest3081342-21kworker/u8:1+events_unbound08:00:241
3073506994136,3cyclictest1213033-21systemd-journal10:25:580
3073506994135,5cyclictest3134972-21kworker/u8:0+flush-179:010:20:250
3073506994135,5cyclictest3094381-21turbostat08:19:560
3073506994133,6cyclictest3079773-21apt07:30:010
3073506994133,6cyclictest3079773-21apt07:30:010
3073506994131,8cyclictest3092803-21kworker/u8:3+flush-179:008:20:200
3073512994037,2cyclictest0-21swapper/307:44:553
3073511994037,2cyclictest0-21swapper/207:44:552
3073506994016,8cyclictest1213033-21systemd-journal12:15:010
307350699401,2cyclictest3089604-21ls08:00:000
307351299390,38cyclictest3086161-21turbostat07:50:003
307351299390,38cyclictest3086161-21turbostat07:50:003
307351199390,36cyclictest0-21swapper/211:08:002
3073506993936,2cyclictest0-21swapper/011:10:590
3073506993934,4cyclictest3084547-21kworker/u8:0+flush-179:008:55:170
307351299380,3cyclictest3097580-21turbostat08:25:003
3073511993834,2cyclictest0-21swapper/209:13:582
3073506993828,7cyclictest1213033-21systemd-journal08:45:000
307351199370,1cyclictest0-21swapper/212:03:002
3073506993730,5cyclictest3071428-21kworker/u8:1+flush-179:007:15:170
3073512993634,1cyclictest0-21swapper/309:13:593
3073512993631,4cyclictest3180107-21turbostat12:40:003
307351299360,35cyclictest0-21swapper/311:07:593
3073512993533,1cyclictest431rcuc/308:15:593
3073512993531,3cyclictest3082989-21turbostat07:40:003
3073512993529,5cyclictest3162342-21turbostat11:45:003
307351299350,1cyclictest0-21swapper/312:02:593
3073511993533,1cyclictest351rcuc/208:15:582
3073511993431,2cyclictest0-21swapper/212:17:592
3073511993430,2cyclictest0-21swapper/211:34:552
307351199340,2cyclictest0-21swapper/208:08:592
307350699342,30cyclictest3168961-21apt-get12:05:120
3073512993331,1cyclictest0-21swapper/312:17:593
3073511993330,2cyclictest0-21swapper/212:40:002
3073511993329,2cyclictest0-21swapper/210:49:002
3073512993229,2cyclictest0-21swapper/310:48:593
3073512993227,4cyclictest3103990-21turbostat08:45:003
3073511993230,1cyclictest0-21swapper/207:40:002
3073511993229,2cyclictest0-21swapper/212:24:582
307351199320,29cyclictest0-21swapper/210:20:132
3073506993227,4cyclictest0-21swapper/009:50:040
3073512993129,1cyclictest0-21swapper/312:24:583
3073512993129,1cyclictest0-21swapper/311:34:553
307351299310,1cyclictest0-21swapper/308:08:593
307351199311,28cyclictest361ktimers/212:10:132
3073506993127,2cyclictest3122279-21apt-get09:40:150
3073512993027,2cyclictest0-21swapper/311:45:123
307351299300,2cyclictest0-21swapper/312:05:123
307351299300,2cyclictest0-21swapper/309:05:123
307351299300,2cyclictest0-21swapper/309:00:153
307351299300,28cyclictest0-21swapper/309:50:023
307351299300,28cyclictest0-21swapper/309:15:143
3073511993028,1cyclictest0-21swapper/211:45:012
3073511993027,2cyclictest0-21swapper/211:45:122
3073511993026,2cyclictest0-21swapper/207:59:552
307351199300,2cyclictest0-21swapper/212:05:122
307351199300,29cyclictest0-21swapper/209:15:142
307351199300,28cyclictest0-21swapper/212:30:122
307351199300,28cyclictest0-21swapper/208:30:132
307351199300,27cyclictest0-21swapper/208:42:002
307351199300,21cyclictest0-21swapper/207:27:592
307351199300,21cyclictest0-21swapper/207:27:592
3073512992926,2cyclictest0-21swapper/310:00:143
3073512992926,2cyclictest0-21swapper/308:55:143
307351299290,2cyclictest0-21swapper/311:15:153
307351299290,2cyclictest0-21swapper/309:30:133
307351299290,27cyclictest0-21swapper/312:30:123
307351299290,27cyclictest0-21swapper/312:10:143
307351299290,27cyclictest0-21swapper/311:25:133
307351299290,27cyclictest0-21swapper/308:30:133
307351299290,27cyclictest0-21swapper/307:50:123
307351299290,1cyclictest0-21swapper/310:20:143
3073511992926,2cyclictest0-21swapper/211:25:142
3073511992926,2cyclictest0-21swapper/211:15:142
3073511992926,2cyclictest0-21swapper/210:16:592
3073511992925,2cyclictest0-21swapper/210:12:002
307351199290,2cyclictest0-21swapper/208:25:132
307351199290,28cyclictest0-21swapper/210:30:022
307351199290,28cyclictest0-21swapper/208:55:142
307351199290,28cyclictest0-21swapper/207:50:122
307351199290,27cyclictest0-21swapper/211:55:112
307351199290,27cyclictest0-21swapper/211:01:592
307351199290,27cyclictest0-21swapper/209:50:032
307351199290,27cyclictest0-21swapper/209:05:132
307351199290,27cyclictest0-21swapper/209:00:152
307351199290,21cyclictest0-21swapper/210:00:132
307351199290,1cyclictest0-21swapper/211:10:152
4577091280,7ptp4l441ktimers/308:05:003
3073512992826,1cyclictest0-21swapper/310:16:583
3073512992826,1cyclictest0-21swapper/310:12:003
3073512992826,1cyclictest0-21swapper/308:25:133
3073512992826,1cyclictest0-21swapper/307:59:553
3073512992825,2cyclictest0-21swapper/310:05:133
3073512992822,5cyclictest3125207-21turbostat09:50:013
307351299281,1cyclictest0-21swapper/311:10:153
307351299280,2cyclictest0-21swapper/307:28:003
307351299280,2cyclictest0-21swapper/307:27:593
307351299280,26cyclictest0-21swapper/310:30:013
3073511992825,2cyclictest0-21swapper/210:05:122
3073511992825,2cyclictest0-21swapper/209:30:132
3073511992824,2cyclictest0-21swapper/208:53:582
307351199280,2cyclictest0-21swapper/212:27:592
307351199280,25cyclictest0-21swapper/211:20:152
4577091270,4ptp4l441ktimers/308:49:593
4577091270,3ptp4l441ktimers/307:20:013
3073512992725,1cyclictest0-21swapper/309:28:003
3073512992725,1cyclictest0-21swapper/308:13:003
307351299270,26cyclictest0-21swapper/311:02:003
307351299270,19cyclictest0-21swapper/309:20:023
3073511992724,2cyclictest0-21swapper/208:13:002
3073511992723,2cyclictest0-21swapper/208:36:592
3073511992723,2cyclictest0-21swapper/207:10:492
307351199270,25cyclictest0-21swapper/209:20:032
307351199270,25cyclictest0-21swapper/208:04:592
3073512992624,1cyclictest0-21swapper/309:36:583
3073512992624,1cyclictest0-21swapper/308:53:593
3073512992623,2cyclictest0-21swapper/310:35:123
3073512992623,2cyclictest0-21swapper/309:59:583
3073512992623,2cyclictest0-21swapper/308:36:593
307351299260,2cyclictest0-21swapper/311:20:143
307351299260,1cyclictest0-21swapper/312:27:593
3073511992623,2cyclictest0-21swapper/210:35:122
3073511992623,2cyclictest0-21swapper/209:36:592
3073511992623,2cyclictest0-21swapper/208:47:592
3073511992623,2cyclictest0-21swapper/207:45:132
3073511992623,2cyclictest0-21swapper/207:45:132
3073511992623,2cyclictest0-21swapper/207:20:592
307351199260,24cyclictest0-21swapper/209:47:582
307351199260,18cyclictest0-21swapper/210:25:142
4577091250,3ptp4l61490irq/134-eno1-TxRx-010:45:013
4577091250,3ptp4l441ktimers/311:39:563
4577091250,3ptp4l441ktimers/310:59:553
4577091250,3ptp4l441ktimers/310:29:563
4577091250,3ptp4l441ktimers/307:34:563
4577091250,3ptp4l441ktimers/307:14:563
3073512992523,1cyclictest0-21swapper/311:51:593
3073512992523,1cyclictest0-21swapper/307:20:593
3073512992521,2cyclictest0-21swapper/310:50:113
3073511992522,2cyclictest351rcuc/209:27:592
3073511992522,2cyclictest0-21swapper/211:51:592
3073511992422,1cyclictest0-21swapper/209:59:592
3073511992421,2cyclictest0-21swapper/210:50:122
3073511992421,2cyclictest0-21swapper/209:43:582
3073508992419,3cyclictest0-21swapper/107:10:021
3073506992420,3cyclictest3073597-21latency_hist07:10:030
3073511992320,2cyclictest0-21swapper/210:40:142
3073511992319,2cyclictest0-21swapper/211:38:592
3073511992117,2cyclictest0-21swapper/207:16:592
3073511991512,2cyclictest351rcuc/208:20:032
3073511991411,2cyclictest351rcuc/211:00:002
3073511991310,2cyclictest351rcuc/207:32:472
30735119930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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