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2026-07-21 - 22:04
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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 Jul 21, 2026 12:49:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
870699333133,2cyclictest931rcuc/1312:16:005
330891279272,6phc2sys0-21swapper/207:06:0512
86789917858,119cyclictest0-21swapper/809:40:4430
86789917858,119cyclictest0-21swapper/809:40:4330
3273911760,168ptp4l0-21swapper/107:05:041
74472169162,6sleep50-21swapper/507:09:5627
8659991610,135cyclictest0-21swapper/511:32:3627
8636991619,149cyclictest151rcu_preempt09:14:570
8636991619,149cyclictest151rcu_preempt09:14:560
86599915726,78cyclictest0-21swapper/508:15:2327
86789915434,118cyclictest0-21swapper/811:55:2730
86789915230,120cyclictest0-21swapper/809:25:1330
86789915230,120cyclictest0-21swapper/809:25:1230
86789915132,84cyclictest0-21swapper/812:25:2230
86789915130,120cyclictest0-21swapper/807:40:1430
8659991490,90cyclictest0-21swapper/508:37:1727
1665821460,2sleep170-21swapper/1709:40:179
1665821460,2sleep170-21swapper/1709:40:169
87829914551,93cyclictest0-21swapper/3010:57:1224
8740991410,84cyclictest0-21swapper/2012:15:2313
86789914149,59cyclictest0-21swapper/809:57:1930
8636991410,86cyclictest0-21swapper/010:27:360
8636991410,86cyclictest0-21swapper/010:27:360
87749914053,42cyclictest0-21swapper/2811:42:5621
87649914049,58cyclictest0-21swapper/2610:50:1019
86789913950,61cyclictest0-21swapper/812:10:0030
86369913920,38cyclictest0-21swapper/011:31:540
8659991380,82cyclictest0-21swapper/510:34:2027
86369913823,30cyclictest0-21swapper/010:13:440
86369913823,30cyclictest0-21swapper/010:13:440
87649913740,65cyclictest0-21swapper/2611:58:2519
86789913751,62cyclictest0-21swapper/811:23:0430
86789913747,58cyclictest0-21swapper/809:21:3030
86789913747,58cyclictest0-21swapper/809:21:3030
86789913744,61cyclictest0-21swapper/810:52:0630
86369913728,69cyclictest0-21swapper/011:56:570
86369913722,32cyclictest0-21swapper/010:16:560
86369913722,32cyclictest0-21swapper/010:16:550
87649913637,60cyclictest0-21swapper/2611:14:1419
87649913619,70cyclictest0-21swapper/2611:22:0119
86789913649,61cyclictest0-21swapper/812:00:2130
86789913631,68cyclictest0-21swapper/809:32:2430
86789913631,68cyclictest0-21swapper/809:32:2430
87649913540,61cyclictest0-21swapper/2612:09:3919
87539913537,90cyclictest0-21swapper/2309:40:3916
87539913537,90cyclictest0-21swapper/2309:40:3816
86789913527,67cyclictest0-21swapper/812:05:1130
86789913527,66cyclictest0-21swapper/811:15:2030
86369913540,20cyclictest0-21swapper/011:13:120
87649913445,61cyclictest0-21swapper/2610:41:0519
86789913444,58cyclictest0-21swapper/810:14:4030
86789913444,58cyclictest0-21swapper/810:14:4030
86789913427,62cyclictest0-21swapper/808:46:1330
86369913450,57cyclictest0-21swapper/010:35:160
87649913339,58cyclictest0-21swapper/2612:18:5519
87649913329,71cyclictest0-21swapper/2611:46:5119
87409913347,32cyclictest0-21swapper/2008:05:2313
86789913329,69cyclictest0-21swapper/812:38:2630
86369913322,29cyclictest0-21swapper/010:33:030
86369913321,76cyclictest0-21swapper/010:04:150
86369913321,76cyclictest0-21swapper/010:04:140
87649913256,63cyclictest0-21swapper/2611:15:1919
87649913247,57cyclictest0-21swapper/2612:35:2919
87649913227,66cyclictest0-21swapper/2609:35:2219
87649913227,66cyclictest0-21swapper/2609:35:2119
87409913236,41cyclictest0-21swapper/2009:35:0113
87409913236,41cyclictest0-21swapper/2009:35:0113
86789913225,63cyclictest0-21swapper/807:50:0830
86369913248,59cyclictest0-21swapper/008:17:470
87649913153,63cyclictest0-21swapper/2612:31:1219
87649913131,74cyclictest0-21swapper/2612:24:1419
87649913128,67cyclictest0-21swapper/2609:44:2719
87649913128,67cyclictest0-21swapper/2609:44:2619
8706991315,125cyclictest0-21swapper/1311:14:195
8706991315,111cyclictest0-21swapper/1311:56:145
86789913148,54cyclictest0-21swapper/807:10:0330
86789913146,65cyclictest0-21swapper/810:59:1930
86789913132,68cyclictest0-21swapper/811:06:1130
86789913129,67cyclictest0-21swapper/811:35:2330
86789913126,66cyclictest0-21swapper/812:17:1930
86789913125,62cyclictest0-21swapper/809:46:3730
86789913125,62cyclictest0-21swapper/809:46:3730
8659991311,100cyclictest0-21swapper/507:15:0127
87649913046,65cyclictest0-21swapper/2608:55:1619
87649913032,71cyclictest0-21swapper/2610:37:2219
87649913031,65cyclictest0-21swapper/2610:12:1419
87649913031,65cyclictest0-21swapper/2610:12:1419
87649913026,66cyclictest0-21swapper/2611:33:2819
8706991305,93cyclictest0-21swapper/1311:27:105
8706991305,88cyclictest31997-21diskmemload09:19:085
8706991305,88cyclictest31997-21diskmemload09:19:085
8706991305,108cyclictest0-21swapper/1310:49:585
86789913028,68cyclictest0-21swapper/812:21:3730
86789913028,67cyclictest0-21swapper/808:20:0230
86789913028,67cyclictest0-21swapper/807:30:3430
86369913042,56cyclictest0-21swapper/012:15:060
72592130122,6sleep300-21swapper/3007:07:1024
87649912941,62cyclictest0-21swapper/2612:25:1819
87649912928,66cyclictest0-21swapper/2609:32:4119
87649912928,66cyclictest0-21swapper/2609:32:4119
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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