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2026-04-17 - 10:54
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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 100 highest latencies:
System rackcslot8.osadl.org (updated Fri Apr 17, 2026 00:49:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
654299360164,1cyclictest151rcu_preempt21:35:2413
654299360164,1cyclictest151rcu_preempt21:35:2413
3273913220,314ptp4l0-21swapper/119:07:251
641099231120,1cyclictest151rcu_preempt22:27:590
64109919930,90cyclictest0-21swapper/023:10:160
330891173165,6phc2sys0-21swapper/219:05:2712
66109915434,119cyclictest0-21swapper/3000:25:1024
66109915434,110cyclictest0-21swapper/3021:49:0824
66109915434,110cyclictest0-21swapper/3021:49:0724
659399149112,22cyclictest0-21swapper/2721:43:4420
659399149112,22cyclictest0-21swapper/2721:43:4420
66109914729,101cyclictest0-21swapper/3022:33:2924
66109914728,118cyclictest0-21swapper/3000:35:2224
6461991473,103cyclictest0-21swapper/819:40:1830
66109914427,71cyclictest0-21swapper/3023:27:5924
66109914326,68cyclictest0-21swapper/3021:21:5224
66109914326,68cyclictest0-21swapper/3021:21:5224
66109914122,94cyclictest0-21swapper/3023:04:2924
6470991410,84cyclictest0-21swapper/923:45:1731
66109913926,74cyclictest0-21swapper/3023:19:5924
64319913950,58cyclictest0-21swapper/323:34:3023
6470991380,83cyclictest0-21swapper/900:07:2831
6470991380,82cyclictest0-21swapper/921:17:3131
6470991380,82cyclictest0-21swapper/921:17:3131
6470991370,85cyclictest0-21swapper/900:20:3431
6445991330,83cyclictest0-21swapper/500:27:5927
64319913239,62cyclictest0-21swapper/319:14:1423
64319913226,71cyclictest0-21swapper/319:45:1423
6618991310,84cyclictest0-21swapper/3123:25:2125
64319913149,57cyclictest0-21swapper/323:47:5023
64319913127,69cyclictest0-21swapper/322:20:1223
64319913127,69cyclictest0-21swapper/322:20:1223
64319913127,64cyclictest0-21swapper/320:19:2623
6470991300,88cyclictest0-21swapper/920:15:3431
64319913052,62cyclictest0-21swapper/322:28:4523
64319912930,73cyclictest0-21swapper/323:57:2923
64319912929,72cyclictest0-21swapper/322:55:2923
64319912929,68cyclictest0-21swapper/322:04:4223
64319912929,68cyclictest0-21swapper/322:04:4223
64319912928,73cyclictest0-21swapper/300:21:1423
64319912928,72cyclictest0-21swapper/321:28:3523
64319912928,72cyclictest0-21swapper/321:28:3523
64319912928,66cyclictest0-21swapper/321:15:0023
64319912928,66cyclictest0-21swapper/321:15:0023
64319912928,64cyclictest0-21swapper/323:36:0623
64319912928,64cyclictest0-21swapper/322:10:0423
64319912928,64cyclictest0-21swapper/322:10:0323
64319912927,68cyclictest0-21swapper/320:40:1623
64319912927,66cyclictest0-21swapper/321:00:0323
64319912927,66cyclictest0-21swapper/321:00:0223
64459912818,76cyclictest0-21swapper/523:06:3027
6445991280,76cyclictest0-21swapper/500:10:3727
6431991287,75cyclictest0-21swapper/300:13:3223
64319912853,59cyclictest0-21swapper/322:30:2223
64319912828,77cyclictest0-21swapper/319:55:2323
64319912828,70cyclictest0-21swapper/300:25:1623
64319912827,68cyclictest0-21swapper/321:53:3023
64319912827,68cyclictest0-21swapper/321:53:2923
64319912826,71cyclictest0-21swapper/323:09:5323
64319912826,66cyclictest0-21swapper/321:55:3723
64319912826,66cyclictest0-21swapper/321:55:3723
6470991270,84cyclictest0-21swapper/923:16:2631
64509912755,37cyclictest0-21swapper/622:14:3328
64509912755,37cyclictest0-21swapper/622:14:3328
64459912731,74cyclictest0-21swapper/500:05:3227
64319912729,73cyclictest0-21swapper/323:22:4423
64319912726,67cyclictest0-21swapper/319:15:1823
64509912653,62cyclictest0-21swapper/623:04:3828
64319912627,69cyclictest0-21swapper/319:27:0423
6445991250,72cyclictest0-21swapper/522:30:5627
64319912530,70cyclictest0-21swapper/323:16:5223
64319912527,65cyclictest0-21swapper/321:09:4023
64319912527,65cyclictest0-21swapper/321:09:3923
64319912526,62cyclictest0-21swapper/322:47:1823
65879912447,57cyclictest0-21swapper/2622:18:5919
6542991240,77cyclictest0-21swapper/2022:03:5713
6542991240,77cyclictest0-21swapper/2022:03:5613
64319912428,63cyclictest0-21swapper/300:00:4123
64319912423,63cyclictest0-21swapper/321:37:2723
64319912423,63cyclictest0-21swapper/321:37:2723
65879912341,54cyclictest0-21swapper/2620:41:1119
65879912332,76cyclictest0-21swapper/2623:25:1619
64509912353,56cyclictest0-21swapper/622:20:1528
64509912353,56cyclictest0-21swapper/622:20:1528
64509912349,52cyclictest0-21swapper/623:31:5328
64509912335,57cyclictest0-21swapper/622:19:1128
64509912328,61cyclictest0-21swapper/619:28:2728
64319912343,61cyclictest0-21swapper/323:28:3723
64319912327,66cyclictest0-21swapper/319:36:0723
65879912246,60cyclictest0-21swapper/2623:01:4519
65879912245,55cyclictest0-21swapper/2621:29:5019
65879912245,55cyclictest0-21swapper/2621:29:4919
65879912228,65cyclictest0-21swapper/2622:28:3619
65879912224,65cyclictest0-21swapper/2600:39:0119
64509912239,57cyclictest0-21swapper/622:44:3428
64509912227,61cyclictest0-21swapper/623:42:5128
64319912231,73cyclictest0-21swapper/320:00:1223
65879912148,70cyclictest0-21swapper/2623:49:1919
65879912129,61cyclictest0-21swapper/2600:25:2619
65879912126,61cyclictest0-21swapper/2620:10:1119
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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