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2026-04-23 - 13:35
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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 Thu Apr 23, 2026 00:49:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
400599330133,2cyclictest151rcu_preempt00:04:034
3273912390,231ptp4l0-21swapper/119:08:151
3273912390,231ptp4l0-21swapper/119:08:141
40869916139,30cyclictest0-21swapper/2521:15:2018
40869915940,118cyclictest0-21swapper/2523:13:4418
40869915840,76cyclictest0-21swapper/2523:19:5218
40869915837,120cyclictest0-21swapper/2523:39:0818
40869915235,97cyclictest0-21swapper/2522:47:1718
40869914931,68cyclictest0-21swapper/2520:10:1218
40419914249,60cyclictest0-21swapper/1923:52:2311
41039914130,63cyclictest0-21swapper/2923:35:5822
41039914044,61cyclictest0-21swapper/2923:33:1922
397199140139,1cyclictest151rcu_preempt21:14:0830
41039913931,65cyclictest0-21swapper/2923:29:0122
41039913930,67cyclictest0-21swapper/2919:10:2322
41039913930,67cyclictest0-21swapper/2919:10:2222
41039913930,66cyclictest0-21swapper/2923:04:2722
41039913929,63cyclictest0-21swapper/2923:20:2922
40659913960,39cyclictest0-21swapper/2200:18:3615
40419913928,70cyclictest0-21swapper/1922:40:4511
40149913920,88cyclictest0-21swapper/1419:30:136
40149913920,88cyclictest0-21swapper/1419:30:136
41039913845,61cyclictest0-21swapper/2923:14:3522
41039913845,57cyclictest0-21swapper/2921:26:3922
41039913829,63cyclictest0-21swapper/2923:57:2122
41039913829,62cyclictest0-21swapper/2900:12:3922
41039913828,63cyclictest0-21swapper/2923:50:5622
40869913831,64cyclictest0-21swapper/2500:22:4018
40149913853,80cyclictest0-21swapper/1423:26:056
41039913731,69cyclictest0-21swapper/2922:58:3322
40419913724,53cyclictest0-21swapper/1923:35:1711
41039913639,57cyclictest0-21swapper/2919:15:1622
41039913639,57cyclictest0-21swapper/2919:15:1622
41039913629,64cyclictest0-21swapper/2923:06:3522
4103991360,80cyclictest0-21swapper/2921:30:2322
40419913629,70cyclictest0-21swapper/1900:17:3111
41039913530,66cyclictest0-21swapper/2922:28:3922
41039913529,60cyclictest0-21swapper/2921:12:4522
41039913528,63cyclictest0-21swapper/2922:45:4422
41039913528,63cyclictest0-21swapper/2900:00:0222
40419913549,54cyclictest0-21swapper/1923:12:1811
41039913440,62cyclictest0-21swapper/2900:39:2022
41039913440,62cyclictest0-21swapper/2900:39:2022
41039913431,65cyclictest0-21swapper/2900:34:4622
41039913431,62cyclictest0-21swapper/2920:00:0422
41039913429,63cyclictest0-21swapper/2921:42:4122
41039913428,63cyclictest0-21swapper/2920:48:4522
41039913428,62cyclictest0-21swapper/2920:30:3222
40419913439,64cyclictest0-21swapper/1900:07:5311
40419913429,66cyclictest0-21swapper/1922:30:0511
40419913428,64cyclictest0-21swapper/1922:52:3111
39969913450,57cyclictest0-21swapper/1121:30:023
39969913427,66cyclictest0-21swapper/1121:38:433
4119991337,89cyclictest0-21swapper/3123:33:5225
41039913330,67cyclictest0-21swapper/2921:53:0622
41039913328,65cyclictest0-21swapper/2921:49:3722
41039913318,67cyclictest0-21swapper/2922:05:0722
40659913332,25cyclictest0-21swapper/2223:35:5115
40419913351,58cyclictest0-21swapper/1919:50:2011
40419913328,73cyclictest0-21swapper/1922:11:5011
41039913232,66cyclictest0-21swapper/2923:46:0922
41039913230,63cyclictest0-21swapper/2923:16:1322
4103991320,78cyclictest0-21swapper/2921:20:1322
40589913276,53cyclictest3914-21cyclictest23:08:0414
40589913245,60cyclictest0-21swapper/2122:52:3314
40509913221,68cyclictest0-21swapper/2021:36:2613
40419913231,75cyclictest0-21swapper/1923:24:3611
40419913228,70cyclictest0-21swapper/1921:25:2311
40419913227,69cyclictest0-21swapper/1921:19:0011
40419913219,64cyclictest0-21swapper/1900:35:0911
40419913219,64cyclictest0-21swapper/1900:35:0811
40149913251,75cyclictest0-21swapper/1420:05:436
39969913228,64cyclictest0-21swapper/1100:37:093
39969913228,64cyclictest0-21swapper/1100:37:083
3963991321,79cyclictest0-21swapper/720:40:1929
4119991317,95cyclictest0-21swapper/3121:08:4625
4119991317,87cyclictest0-21swapper/3100:13:2325
4119991317,83cyclictest0-21swapper/3122:15:1825
4119991317,76cyclictest0-21swapper/3122:46:1925
4119991317,115cyclictest0-21swapper/3120:25:1325
41039913133,61cyclictest0-21swapper/2900:24:0422
41039913131,65cyclictest0-21swapper/2920:40:4222
41039913131,59cyclictest0-21swapper/2900:09:3922
41039913120,65cyclictest0-21swapper/2921:06:5222
41039913116,68cyclictest0-21swapper/2923:42:2322
4103991310,79cyclictest0-21swapper/2920:37:2822
40419913128,72cyclictest0-21swapper/1922:48:4611
40419913128,67cyclictest0-21swapper/1921:39:1811
40419913125,61cyclictest0-21swapper/1900:30:2011
39969913131,66cyclictest0-21swapper/1100:15:203
39969913129,68cyclictest0-21swapper/1121:44:453
41039913030,70cyclictest0-21swapper/2921:18:0522
41039913028,60cyclictest0-21swapper/2921:37:5122
40909913031,94cyclictest0-21swapper/2620:12:0919
40909913030,86cyclictest0-21swapper/2621:58:3919
40419913055,65cyclictest0-21swapper/1923:00:3211
40419913030,67cyclictest0-21swapper/1921:46:4611
40419913028,63cyclictest0-21swapper/1923:42:1411
39969913030,66cyclictest0-21swapper/1100:05:223
39969913029,70cyclictest0-21swapper/1123:18:343
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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