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2026-09-07 - 09:41
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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 100 highest latencies:
System rackcslot8.osadl.org (updated Mon Sep 07, 2026 00:48:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1565599383184,1cyclictest151rcu_preempt22:15:014
1573399335137,1cyclictest161-21ksoftirqd/2400:25:1717
3273912770,269ptp4l0-21swapper/119:05:561
330891252243,6phc2sys0-21swapper/219:05:2512
157479921619,1cyclictest151rcu_preempt23:47:0721
157479921619,1cyclictest151rcu_preempt23:47:0721
15655991874,179cyclictest0-21swapper/1221:12:564
15655991864,179cyclictest0-21swapper/1200:30:124
15655991864,179cyclictest0-21swapper/1200:30:124
15655991815,153cyclictest0-21swapper/1220:40:214
156559917238,106cyclictest151rcu_preempt23:46:204
156559917238,106cyclictest151rcu_preempt23:46:194
95312166157,7sleep80-21swapper/819:05:0530
15749991510,85cyclictest0-21swapper/2923:05:3922
156179915039,73cyclictest0-21swapper/622:36:2328
1571099145121,24cyclictest1361rcuc/2019:40:1813
15655991454,105cyclictest0-21swapper/1223:32:104
15655991454,105cyclictest0-21swapper/1223:32:094
156559914319,94cyclictest0-21swapper/1219:41:304
156559914319,112cyclictest0-21swapper/1200:20:024
156559914319,112cyclictest0-21swapper/1200:20:024
157399914234,76cyclictest14478-21taskset21:57:2719
15739991420,86cyclictest0-21swapper/2622:58:3819
156179914026,112cyclictest0-21swapper/621:55:1428
142512140131,7sleep310-21swapper/3119:07:3625
157499913949,60cyclictest0-21swapper/2921:27:1822
15739991390,80cyclictest0-21swapper/2622:50:0619
156179913928,110cyclictest0-21swapper/620:55:3228
157499913850,61cyclictest0-21swapper/2921:11:1622
156179913828,97cyclictest0-21swapper/600:07:4828
156179913828,97cyclictest0-21swapper/600:07:4728
157499913757,65cyclictest0-21swapper/2921:22:2922
157499913748,59cyclictest0-21swapper/2922:34:3822
157499913649,61cyclictest0-21swapper/2923:13:0822
156179913624,77cyclictest0-21swapper/622:42:1728
157499913559,48cyclictest0-21swapper/2920:10:2122
157499913537,68cyclictest0-21swapper/2922:29:1822
157499913530,70cyclictest0-21swapper/2922:11:0822
157499913529,69cyclictest0-21swapper/2921:45:1822
157499913528,66cyclictest0-21swapper/2921:05:2422
157499913527,64cyclictest0-21swapper/2921:56:4222
157499913449,69cyclictest0-21swapper/2900:08:4322
157499913449,69cyclictest0-21swapper/2900:08:4322
157499913448,57cyclictest0-21swapper/2900:19:2422
157499913446,56cyclictest0-21swapper/2919:11:0222
157499913427,70cyclictest0-21swapper/2923:20:0522
157499913427,70cyclictest0-21swapper/2923:20:0422
157499913424,62cyclictest0-21swapper/2919:36:0922
157399913433,80cyclictest0-21swapper/2623:15:1319
156179913439,73cyclictest0-21swapper/619:15:0528
157499913334,66cyclictest0-21swapper/2921:01:0722
157499913330,71cyclictest0-21swapper/2923:25:2522
157499913330,71cyclictest0-21swapper/2923:25:2522
157499913329,72cyclictest0-21swapper/2900:34:1522
157499913329,72cyclictest0-21swapper/2900:34:1422
157499913329,65cyclictest0-21swapper/2921:30:3122
157499913328,70cyclictest0-21swapper/2923:36:5522
157499913328,70cyclictest0-21swapper/2923:36:5522
157499913328,70cyclictest0-21swapper/2920:35:2822
157499913326,63cyclictest0-21swapper/2920:00:1222
15739991331,79cyclictest0-21swapper/2621:43:4819
15592991330,81cyclictest0-21swapper/219:45:3212
15758991321,77cyclictest0-21swapper/3022:17:3424
157499913230,71cyclictest0-21swapper/2922:45:5222
15739991322,78cyclictest0-21swapper/2620:23:0819
15739991321,80cyclictest0-21swapper/2600:33:1419
15739991321,80cyclictest0-21swapper/2600:33:1419
156559913215,68cyclictest0-21swapper/1222:35:474
157499913132,72cyclictest0-21swapper/2900:03:2322
157499913132,72cyclictest0-21swapper/2900:03:2322
157499913131,68cyclictest0-21swapper/2923:44:4022
157499913131,68cyclictest0-21swapper/2923:44:4022
157499913129,75cyclictest0-21swapper/2900:21:0122
157499913129,75cyclictest0-21swapper/2900:21:0122
157499913129,73cyclictest0-21swapper/2922:15:5622
157499913129,66cyclictest0-21swapper/2921:35:1922
157499913128,69cyclictest0-21swapper/2921:50:4822
157499913128,68cyclictest0-21swapper/2923:51:2122
157499913128,68cyclictest0-21swapper/2923:51:2022
157339913150,79cyclictest0-21swapper/2422:18:5217
157339913139,91cyclictest0-21swapper/2421:05:1817
156559913147,55cyclictest0-21swapper/1221:55:544
156559913146,62cyclictest0-21swapper/1221:31:214
156559913146,56cyclictest0-21swapper/1221:45:004
156559913143,60cyclictest0-21swapper/1219:45:144
156559913140,63cyclictest0-21swapper/1222:29:534
156559913137,63cyclictest0-21swapper/1220:45:204
156149913110,53cyclictest8179-21taskset23:20:2927
156149913110,53cyclictest8179-21taskset23:20:2927
15614991310,75cyclictest0-21swapper/521:57:2127
157499913031,73cyclictest0-21swapper/2920:50:1022
157499913030,74cyclictest0-21swapper/2920:34:2422
157499913030,73cyclictest0-21swapper/2922:57:5622
157499913030,71cyclictest0-21swapper/2920:21:0222
157499913029,66cyclictest0-21swapper/2923:18:4822
157499913029,66cyclictest0-21swapper/2922:42:0722
15749991300,77cyclictest0-21swapper/2920:15:0922
15617991300,78cyclictest0-21swapper/623:32:3228
15617991300,78cyclictest0-21swapper/623:32:3128
157499912933,76cyclictest0-21swapper/2900:38:2222
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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