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2026-05-15 - 13:28
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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 May 15, 2026 00:49:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912990,291ptp4l0-21swapper/119:09:001
259992284276,6sleep20-21swapper/219:05:2212
285669927781,1cyclictest151rcu_preempt23:13:189
285669927781,1cyclictest151rcu_preempt23:13:189
285669927781,1cyclictest151rcu_preempt22:29:289
285269926770,1cyclictest151rcu_preempt22:12:364
286519920817,117cyclictest0-21swapper/2822:15:0121
260482195190,3sleep30-21swapper/319:05:2323
285899918145,135cyclictest0-21swapper/2021:29:3013
285049917734,82cyclictest0-21swapper/919:10:0131
285899917645,85cyclictest0-21swapper/2020:33:3013
285899917033,11cyclictest0-21swapper/2019:20:0213
285829917021,114cyclictest0-21swapper/1922:27:5411
2849699166163,2cyclictest64-21ksoftirqd/823:15:1230
2849699166163,2cyclictest64-21ksoftirqd/823:15:1230
285899916433,79cyclictest0-21swapper/2023:40:0013
285899916433,79cyclictest0-21swapper/2023:40:0013
285899916432,80cyclictest0-21swapper/2019:45:1713
284969916482,49cyclictest64-21ksoftirqd/821:43:4430
285899916328,95cyclictest0-21swapper/2000:06:5213
285829915926,84cyclictest0-21swapper/1922:19:0311
285829915326,73cyclictest0-21swapper/1921:55:1811
284969915350,70cyclictest0-21swapper/800:00:0030
284969915350,70cyclictest0-21swapper/800:00:0030
284499915328,120cyclictest151rcu_preempt20:17:1312
285439914922,91cyclictest0-21swapper/1422:45:276
285829914820,92cyclictest0-21swapper/1922:03:4811
284969914837,110cyclictest0-21swapper/822:16:4630
285899914532,56cyclictest0-21swapper/2023:40:0713
285899914532,56cyclictest0-21swapper/2023:40:0713
285899914425,74cyclictest0-21swapper/2000:31:1113
285439914420,103cyclictest0-21swapper/1422:59:416
285439914420,103cyclictest0-21swapper/1422:59:416
284499914420,80cyclictest0-21swapper/222:07:5012
28439991430,86cyclictest0-21swapper/019:18:280
286759914126,112cyclictest0-21swapper/3121:18:3725
28582991410,75cyclictest0-21swapper/1922:55:3811
28582991410,75cyclictest0-21swapper/1922:55:3811
284969914162,36cyclictest0-21swapper/800:10:2430
284969914162,36cyclictest0-21swapper/800:10:2430
284769914130,67cyclictest0-21swapper/523:19:3027
284769914130,67cyclictest0-21swapper/523:19:3027
285829914026,74cyclictest0-21swapper/1900:06:4611
28496991390,86cyclictest0-21swapper/819:55:1330
28439991390,87cyclictest0-21swapper/000:31:050
286449913823,78cyclictest0-21swapper/2722:02:5520
28543991381,85cyclictest0-21swapper/1423:52:166
28543991381,85cyclictest0-21swapper/1423:52:166
284969913851,56cyclictest0-21swapper/822:50:1230
284969913840,63cyclictest0-21swapper/800:34:2530
284769913861,65cyclictest0-21swapper/522:13:1627
284399913830,67cyclictest0-21swapper/023:22:230
284399913830,67cyclictest0-21swapper/023:22:230
28439991380,84cyclictest0-21swapper/021:20:010
285899913743,62cyclictest0-21swapper/2022:23:0813
285899913722,71cyclictest0-21swapper/2022:29:2113
284969913725,76cyclictest0-21swapper/822:21:4130
284969913725,111cyclictest0-21swapper/823:40:1230
284969913725,111cyclictest0-21swapper/823:40:1230
284769913729,64cyclictest0-21swapper/500:35:0327
284399913747,63cyclictest0-21swapper/022:08:090
28439991370,81cyclictest0-21swapper/023:27:120
28439991370,81cyclictest0-21swapper/023:27:120
286759913649,57cyclictest0-21swapper/3123:37:3525
286759913649,57cyclictest0-21swapper/3123:37:3525
286449913623,70cyclictest0-21swapper/2723:10:1520
286449913623,70cyclictest0-21swapper/2723:10:1520
285439913651,57cyclictest0-21swapper/1423:32:296
285439913651,57cyclictest0-21swapper/1423:32:296
284769913650,62cyclictest0-21swapper/522:48:3127
284399913631,71cyclictest0-21swapper/022:23:200
28439991360,82cyclictest0-21swapper/023:57:060
28439991360,82cyclictest0-21swapper/023:57:060
28439991360,77cyclictest0-21swapper/023:04:460
286759913552,56cyclictest0-21swapper/3121:51:1325
286759913540,61cyclictest0-21swapper/3123:33:1825
286759913540,61cyclictest0-21swapper/3123:33:1825
286759913532,70cyclictest0-21swapper/3100:27:1625
286519913516,98cyclictest0-21swapper/2800:34:1321
286449913523,102cyclictest0-21swapper/2723:20:5720
286449913523,102cyclictest0-21swapper/2723:20:5720
284399913547,61cyclictest0-21swapper/023:49:580
284399913547,61cyclictest0-21swapper/023:49:570
284399913527,74cyclictest0-21swapper/023:50:140
284399913527,74cyclictest0-21swapper/023:50:130
284399913527,68cyclictest0-21swapper/021:35:470
286759913430,80cyclictest0-21swapper/3122:06:1025
286759913429,72cyclictest0-21swapper/3123:42:5625
286759913429,72cyclictest0-21swapper/3123:42:5525
285899913450,54cyclictest0-21swapper/2021:58:2713
285899913432,47cyclictest0-21swapper/2020:15:1213
285899913428,69cyclictest0-21swapper/2000:38:5913
285899913422,80cyclictest0-21swapper/2023:24:3013
285899913422,80cyclictest0-21swapper/2023:24:3013
285829913426,52cyclictest0-21swapper/1922:40:1111
285829913426,52cyclictest0-21swapper/1922:40:1111
284969913441,62cyclictest0-21swapper/822:00:1530
284769913436,58cyclictest0-21swapper/521:24:0427
284399913429,67cyclictest0-21swapper/021:27:310
284399913429,64cyclictest0-21swapper/023:35:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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