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2026-07-03 - 13:36
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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 Jul 03, 2026 00:49:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1000599302105,1cyclictest151rcu_preempt23:45:2029
3273912420,234ptp4l0-21swapper/119:07:251
101649917653,122cyclictest0-21swapper/2723:55:1820
101179917324,100cyclictest0-21swapper/2100:10:4114
77502161147,6sleep280-21swapper/2819:05:2421
101179916011,100cyclictest0-21swapper/2123:56:4714
101649915834,87cyclictest0-21swapper/2722:24:2620
101179915632,100cyclictest0-21swapper/2122:14:2914
101179915326,86cyclictest0-21swapper/2123:12:5314
101649915056,64cyclictest179-21ksoftirqd/2723:13:0420
99739914610,93cyclictest0-21swapper/319:40:1523
99739914610,93cyclictest0-21swapper/319:40:1523
10117991460,87cyclictest0-21swapper/2121:41:0214
10013991440,85cyclictest0-21swapper/822:15:2130
10013991440,85cyclictest0-21swapper/822:07:0430
10021991430,89cyclictest0-21swapper/923:44:5031
101559914155,49cyclictest0-21swapper/2622:33:2019
101559914150,54cyclictest0-21swapper/2621:14:4619
10117991410,83cyclictest0-21swapper/2121:29:4914
10117991400,83cyclictest0-21swapper/2122:27:5914
100139914053,56cyclictest0-21swapper/819:31:5030
100139914053,56cyclictest0-21swapper/819:31:5030
10013991400,89cyclictest0-21swapper/823:49:5630
10117991390,84cyclictest0-21swapper/2121:50:0814
100219913914,76cyclictest0-21swapper/900:24:5431
100219913914,76cyclictest0-21swapper/900:01:2431
10117991380,81cyclictest0-21swapper/2100:33:3514
10117991380,81cyclictest0-21swapper/2100:33:3514
10117991371,80cyclictest0-21swapper/2121:59:4514
10117991370,81cyclictest0-21swapper/2119:57:4914
10117991370,77cyclictest0-21swapper/2120:02:4314
100139913726,63cyclictest0-21swapper/822:10:1730
10117991360,85cyclictest0-21swapper/2121:10:2214
10117991360,80cyclictest0-21swapper/2100:05:2014
100139913632,62cyclictest0-21swapper/819:50:1830
100139913631,67cyclictest0-21swapper/823:00:4730
100139913631,65cyclictest0-21swapper/823:21:0630
101179913531,63cyclictest0-21swapper/2120:30:0014
10117991350,82cyclictest0-21swapper/2100:18:1014
100139913532,68cyclictest0-21swapper/822:31:2430
10155991341,81cyclictest0-21swapper/2621:41:0719
101179913427,61cyclictest0-21swapper/2122:55:1414
10117991340,82cyclictest0-21swapper/2123:34:5314
10117991340,80cyclictest0-21swapper/2119:22:3314
10117991340,80cyclictest0-21swapper/2119:22:3214
100139913433,65cyclictest0-21swapper/822:45:1730
100139913433,61cyclictest0-21swapper/800:07:3330
101179913328,63cyclictest0-21swapper/2123:49:5114
10117991331,80cyclictest0-21swapper/2100:04:4814
10117991330,82cyclictest0-21swapper/2123:26:5214
10117991330,77cyclictest0-21swapper/2121:05:1414
100139913352,50cyclictest0-21swapper/819:15:1730
100139913352,50cyclictest0-21swapper/819:15:1730
100139913328,60cyclictest0-21swapper/822:45:0030
100139913327,66cyclictest0-21swapper/800:25:2830
100139913327,66cyclictest0-21swapper/800:25:2730
99569913232,32cyclictest0-21swapper/123:00:201
101179913229,64cyclictest0-21swapper/2122:05:3714
101179913228,61cyclictest0-21swapper/2121:20:0714
10117991320,82cyclictest0-21swapper/2123:39:0914
10117991320,82cyclictest0-21swapper/2122:24:2014
10117991320,81cyclictest0-21swapper/2100:22:2714
10117991320,80cyclictest0-21swapper/2123:42:5414
100219913214,78cyclictest0-21swapper/921:25:5331
100139913229,68cyclictest0-21swapper/819:55:2130
101179913131,67cyclictest0-21swapper/2122:38:0814
101179913121,75cyclictest0-21swapper/2121:45:1514
10117991310,77cyclictest0-21swapper/2122:40:2214
100139913131,62cyclictest0-21swapper/800:16:4130
100139913130,59cyclictest0-21swapper/823:36:0230
100139913129,61cyclictest0-21swapper/800:10:3530
100139913128,61cyclictest0-21swapper/800:30:0330
100139913128,61cyclictest0-21swapper/800:30:0330
101649913052,64cyclictest0-21swapper/2719:52:0720
101179913030,70cyclictest0-21swapper/2119:14:0514
101179913030,70cyclictest0-21swapper/2119:14:0514
101179913029,60cyclictest0-21swapper/2122:02:2014
10117991300,78cyclictest0-21swapper/2123:00:5614
100139913033,68cyclictest0-21swapper/823:15:1330
100139913029,65cyclictest0-21swapper/820:40:1430
100139913029,64cyclictest0-21swapper/820:50:2330
10013991300,72cyclictest0-21swapper/800:00:3630
100139912926,70cyclictest0-21swapper/819:40:2330
100139912926,70cyclictest0-21swapper/819:40:2230
99569912831,91cyclictest0-21swapper/123:14:451
101179912830,60cyclictest0-21swapper/2120:50:4814
101179912826,64cyclictest0-21swapper/2121:01:2514
10117991280,77cyclictest0-21swapper/2121:30:2114
10117991280,75cyclictest0-21swapper/2121:37:5014
10117991280,74cyclictest0-21swapper/2100:35:4814
10117991280,74cyclictest0-21swapper/2100:35:4814
10117991280,71cyclictest0-21swapper/2120:05:2314
10013991283,75cyclictest0-21swapper/821:10:1030
99569912731,76cyclictest0-21swapper/100:32:161
99569912731,76cyclictest0-21swapper/100:32:161
330891127119,6phc2sys0-21swapper/219:05:0912
101649912738,58cyclictest0-21swapper/2722:17:4420
101649912727,59cyclictest0-21swapper/2721:35:4820
101649912726,67cyclictest0-21swapper/2721:20:1820
101179912725,62cyclictest0-21swapper/2123:22:3514
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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