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2026-08-25 - 22:29
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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 Tue Aug 25, 2026 12:49:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912840,275ptp4l0-21swapper/107:07:001
67839918627,145cyclictest0-21swapper/2912:15:2422
67699917914,111cyclictest536250idleruntime-cro08:25:0019
67839917128,93cyclictest0-21swapper/2910:36:3122
67839917128,93cyclictest0-21swapper/2910:36:3122
66199916322,140cyclictest0-21swapper/009:16:260
66199916222,97cyclictest0-21swapper/010:50:210
66199916222,97cyclictest0-21swapper/010:50:210
66199916121,93cyclictest0-21swapper/010:35:200
66199916121,93cyclictest0-21swapper/010:35:200
66199915621,98cyclictest0-21swapper/007:59:110
66199915620,102cyclictest0-21swapper/012:39:460
66199915321,108cyclictest0-21swapper/010:22:290
6651991501,147cyclictest151rcu_preempt10:47:5428
6651991501,147cyclictest151rcu_preempt10:47:5428
67799914967,49cyclictest0-21swapper/2810:45:0521
67799914967,49cyclictest0-21swapper/2810:45:0521
6779991470,87cyclictest0-21swapper/2810:17:0121
6779991470,87cyclictest0-21swapper/2810:17:0121
66519914715,94cyclictest0-21swapper/611:34:0128
66519914715,94cyclictest0-21swapper/611:34:0128
66399914638,72cyclictest0-21swapper/409:10:2326
67899914518,77cyclictest0-21swapper/3009:30:1624
6779991450,86cyclictest0-21swapper/2811:35:0621
6779991450,86cyclictest0-21swapper/2811:35:0621
6651991451,85cyclictest0-21swapper/611:46:1928
6651991451,85cyclictest0-21swapper/611:46:1828
6738991430,84cyclictest0-21swapper/2109:16:4514
6651991431,89cyclictest0-21swapper/610:58:4528
6651991431,89cyclictest0-21swapper/610:58:4528
67839914229,65cyclictest0-21swapper/2911:06:1222
67839914229,65cyclictest0-21swapper/2911:06:1222
67389914197,35cyclictest143-21ksoftirqd/2110:28:4014
67389914197,35cyclictest143-21ksoftirqd/2110:28:4014
67839913929,65cyclictest0-21swapper/2909:36:4022
6797991387,120cyclictest151rcu_preempt12:02:0225
67839913829,65cyclictest0-21swapper/2910:23:1022
67839913828,67cyclictest0-21swapper/2910:52:0122
67839913828,67cyclictest0-21swapper/2910:52:0122
66199913821,70cyclictest0-21swapper/012:34:120
67839913730,66cyclictest0-21swapper/2910:56:5022
67839913730,66cyclictest0-21swapper/2910:56:5022
67839913729,64cyclictest0-21swapper/2910:29:0222
67839913729,64cyclictest0-21swapper/2910:29:0222
67699913746,59cyclictest0-21swapper/2609:13:0619
66199913718,83cyclictest0-21swapper/011:00:250
66199913718,83cyclictest0-21swapper/011:00:250
67839913655,71cyclictest0-21swapper/2911:14:2822
67839913655,71cyclictest0-21swapper/2911:14:2822
67839913630,70cyclictest0-21swapper/2912:05:4622
67839913528,66cyclictest0-21swapper/2911:16:3622
67839913528,66cyclictest0-21swapper/2911:16:3622
67839913527,67cyclictest0-21swapper/2910:01:4722
67699913530,68cyclictest0-21swapper/2611:56:0619
67699913530,67cyclictest0-21swapper/2608:56:0019
67699913528,63cyclictest0-21swapper/2612:30:1919
67699913527,70cyclictest0-21swapper/2612:00:2319
6651991351,83cyclictest0-21swapper/610:30:1528
67839913430,66cyclictest0-21swapper/2911:21:2522
67839913430,66cyclictest0-21swapper/2911:21:2522
67839913430,65cyclictest0-21swapper/2910:07:4022
67839913427,63cyclictest0-21swapper/2907:15:0322
6783991340,75cyclictest0-21swapper/2912:10:3522
67699913428,68cyclictest0-21swapper/2609:52:0719
67699913428,65cyclictest0-21swapper/2607:43:1819
67699913427,67cyclictest0-21swapper/2611:50:1219
67839913332,67cyclictest0-21swapper/2911:25:4122
67839913332,67cyclictest0-21swapper/2911:25:4122
67839913330,70cyclictest0-21swapper/2908:42:2822
67839913329,70cyclictest0-21swapper/2911:45:1822
67839913329,70cyclictest0-21swapper/2911:45:1822
67839913329,63cyclictest0-21swapper/2908:36:1622
67839913329,61cyclictest0-21swapper/2909:59:2622
67839913328,67cyclictest0-21swapper/2910:34:5522
67839913328,64cyclictest0-21swapper/2912:23:2522
67839913328,64cyclictest0-21swapper/2909:40:5622
67699913353,68cyclictest0-21swapper/2611:30:5919
67699913353,68cyclictest0-21swapper/2611:30:5919
67699913329,68cyclictest0-21swapper/2609:35:0019
67699913329,68cyclictest0-21swapper/2608:29:1719
67699913328,69cyclictest0-21swapper/2611:29:5619
67699913328,69cyclictest0-21swapper/2611:29:5619
67699913328,66cyclictest0-21swapper/2607:23:3319
67699913327,69cyclictest0-21swapper/2608:38:5319
67699913325,63cyclictest0-21swapper/2610:42:2119
67699913325,63cyclictest0-21swapper/2610:42:2119
66519913351,57cyclictest0-21swapper/609:19:4228
67839913231,65cyclictest0-21swapper/2909:31:5122
67839913230,65cyclictest0-21swapper/2912:37:5022
67839913230,62cyclictest0-21swapper/2908:45:0522
67839913229,65cyclictest0-21swapper/2908:11:1022
67839913229,61cyclictest0-21swapper/2908:05:1722
67839913228,62cyclictest0-21swapper/2908:56:5122
67699913246,60cyclictest0-21swapper/2610:56:1519
67699913246,60cyclictest0-21swapper/2610:56:1519
67699913230,71cyclictest0-21swapper/2612:10:3119
67699913230,68cyclictest0-21swapper/2608:54:2219
67699913225,59cyclictest0-21swapper/2612:35:0719
66199913222,74cyclictest0-21swapper/010:42:050
66199913222,74cyclictest0-21swapper/010:42:050
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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