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2026-05-12 - 17:34
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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 May 12, 2026 12:49:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3038399296107,1cyclictest151rcu_preempt12:29:2417
3273912390,231ptp4l0-21swapper/107:09:581
303159922830,1cyclictest151rcu_preempt10:55:222
303159922830,1cyclictest151rcu_preempt10:55:222
303979917038,127cyclictest0-21swapper/2611:27:0519
3035199170168,1cyclictest151rcu_preempt09:50:1210
303979916533,131cyclictest0-21swapper/2609:30:0319
303979916126,43cyclictest0-21swapper/2612:25:2119
303979915826,110cyclictest0-21swapper/2608:35:0019
303519915733,71cyclictest0-21swapper/1812:08:2310
303839915227,62cyclictest0-21swapper/2411:37:1617
303519915226,81cyclictest0-21swapper/1810:55:5710
303519915226,81cyclictest0-21swapper/1810:55:5710
30351991510,85cyclictest0-21swapper/1812:30:0210
303409914951,34cyclictest0-21swapper/1611:33:578
30301991420,88cyclictest0-21swapper/608:05:2728
303409914019,90cyclictest21468-21rm10:37:338
303409914019,90cyclictest21468-21rm10:37:328
303519913836,62cyclictest0-21swapper/1812:16:5910
303409913823,114cyclictest0-21swapper/1610:15:398
303409913823,114cyclictest0-21swapper/1610:15:398
303409913753,61cyclictest0-21swapper/1611:40:388
303409913727,65cyclictest0-21swapper/1611:25:428
303409913629,68cyclictest0-21swapper/1610:06:018
303409913629,68cyclictest0-21swapper/1610:06:018
30397991350,82cyclictest0-21swapper/2610:24:3319
30397991350,82cyclictest0-21swapper/2610:24:3319
303409913554,58cyclictest0-21swapper/1610:02:188
303409913554,58cyclictest0-21swapper/1610:02:178
303409913547,61cyclictest0-21swapper/1610:27:588
303409913547,61cyclictest0-21swapper/1610:27:588
303409913545,60cyclictest0-21swapper/1611:10:268
303409913545,60cyclictest0-21swapper/1611:10:268
303409913528,69cyclictest0-21swapper/1609:37:108
303059913526,66cyclictest0-21swapper/712:33:0329
303409913446,73cyclictest0-21swapper/1612:31:258
303409913428,69cyclictest0-21swapper/1609:28:458
303409913427,70cyclictest0-21swapper/1607:40:148
303409913425,66cyclictest0-21swapper/1612:26:368
30296991340,92cyclictest0-21swapper/511:43:5127
303409913343,55cyclictest0-21swapper/1612:15:048
303409913328,71cyclictest0-21swapper/1612:03:078
302969913356,58cyclictest0-21swapper/512:19:4027
303409913240,75cyclictest0-21swapper/1610:58:248
303409913240,75cyclictest0-21swapper/1610:58:248
303409913230,76cyclictest0-21swapper/1609:47:208
303409913230,76cyclictest0-21swapper/1609:47:198
303409913226,73cyclictest0-21swapper/1609:52:408
303409913226,70cyclictest0-21swapper/1608:10:038
303059913229,71cyclictest0-21swapper/710:28:1629
303059913229,71cyclictest0-21swapper/710:28:1629
303409913159,68cyclictest0-21swapper/1608:15:248
303409913131,74cyclictest0-21swapper/1610:49:318
303409913131,74cyclictest0-21swapper/1610:49:318
303409913129,68cyclictest0-21swapper/1611:37:578
303409913128,72cyclictest0-21swapper/1611:19:448
303409913128,72cyclictest0-21swapper/1611:19:448
303409913128,70cyclictest0-21swapper/1609:16:518
303409913124,68cyclictest0-21swapper/1612:20:288
303409913118,86cyclictest0-21swapper/1609:11:038
303409913029,71cyclictest0-21swapper/1611:55:018
303409913029,69cyclictest0-21swapper/1611:09:208
303409913029,69cyclictest0-21swapper/1611:09:208
303409913029,66cyclictest0-21swapper/1609:56:398
303409913029,66cyclictest0-21swapper/1609:56:388
303409913028,73cyclictest0-21swapper/1610:11:058
303409913028,73cyclictest0-21swapper/1610:11:048
303409913026,62cyclictest0-21swapper/1609:33:098
303059913025,64cyclictest0-21swapper/711:44:5729
303059913024,62cyclictest0-21swapper/711:48:1029
303059913020,103cyclictest25743-21switchtime09:55:2329
303059913020,103cyclictest25743-21switchtime09:55:2329
30301991300,76cyclictest0-21swapper/610:50:3528
30301991300,76cyclictest0-21swapper/610:50:3528
30296991302,77cyclictest0-21swapper/511:08:3427
30296991302,77cyclictest0-21swapper/511:08:3427
304079912948,51cyclictest0-21swapper/2709:20:5920
303409912932,78cyclictest0-21swapper/1609:43:358
303409912932,78cyclictest0-21swapper/1609:43:358
303409912929,63cyclictest0-21swapper/1610:43:418
303409912929,63cyclictest0-21swapper/1610:43:418
303409912927,67cyclictest0-21swapper/1611:02:418
303409912927,67cyclictest0-21swapper/1611:02:418
303059912928,69cyclictest0-21swapper/708:08:3029
303059912927,62cyclictest0-21swapper/710:04:2829
303059912927,62cyclictest0-21swapper/710:04:2729
303409912829,64cyclictest0-21swapper/1611:24:368
303409912829,64cyclictest0-21swapper/1611:24:368
303059912830,80cyclictest0-21swapper/711:35:5229
303059912823,61cyclictest0-21swapper/710:48:1829
303059912823,61cyclictest0-21swapper/710:48:1829
303409912728,65cyclictest0-21swapper/1611:45:388
303409912728,64cyclictest0-21swapper/1608:30:228
303059912731,78cyclictest0-21swapper/709:31:1829
303059912728,70cyclictest0-21swapper/708:40:0229
303059912726,67cyclictest0-21swapper/707:30:0229
304079912614,23cyclictest0-21swapper/2712:25:2220
303299912620,45cyclictest0-21swapper/1309:15:375
303059912629,68cyclictest0-21swapper/711:57:1529
303059912628,69cyclictest0-21swapper/711:11:1729
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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