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2026-08-10 - 16:33
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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 Mon Aug 10, 2026 12:49:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913030,295ptp4l0-21swapper/107:07:231
3273913030,295ptp4l0-21swapper/107:07:231
53869925054,23cyclictest151rcu_preempt11:27:4626
53869925054,23cyclictest151rcu_preempt11:27:4626
330891235227,6phc2sys0-21swapper/207:05:3812
330891235227,6phc2sys0-21swapper/207:05:3812
5458992188,142cyclictest0-21swapper/2012:35:2213
5458992188,142cyclictest0-21swapper/2012:35:2213
54669921340,87cyclictest149-21ksoftirqd/2212:06:4515
54669921340,87cyclictest149-21ksoftirqd/2212:06:4515
548999187185,1cyclictest151rcu_preempt09:30:1320
5458991738,141cyclictest0-21swapper/2010:54:2113
5458991718,141cyclictest0-21swapper/2011:29:3813
5458991718,141cyclictest0-21swapper/2011:29:3813
5489991520,87cyclictest0-21swapper/2711:00:3120
5489991490,88cyclictest0-21swapper/2711:05:2220
54389914854,59cyclictest0-21swapper/1510:13:517
54669914711,119cyclictest0-21swapper/2211:48:2815
54669914711,119cyclictest0-21swapper/2211:48:2815
5458991479,137cyclictest0-21swapper/2011:55:1713
5458991479,137cyclictest0-21swapper/2011:55:1713
5458991478,127cyclictest0-21swapper/2010:30:2113
5458991478,108cyclictest0-21swapper/2011:53:4213
5458991478,108cyclictest0-21swapper/2011:53:4213
54669914611,90cyclictest0-21swapper/2210:52:1015
54669914511,84cyclictest0-21swapper/2209:42:0915
5458991458,87cyclictest0-21swapper/2012:18:1513
5458991458,87cyclictest0-21swapper/2012:18:1513
5458991458,124cyclictest0-21swapper/2008:25:2113
5458991458,108cyclictest0-21swapper/2009:49:4413
5458991448,83cyclictest0-21swapper/2011:31:4913
5458991448,83cyclictest0-21swapper/2011:31:4913
5458991438,111cyclictest0-21swapper/2012:06:3813
5458991438,111cyclictest0-21swapper/2012:06:3813
5438991430,81cyclictest0-21swapper/1508:29:237
54389914248,64cyclictest0-21swapper/1510:22:267
54389914248,58cyclictest0-21swapper/1508:15:587
54389914247,58cyclictest0-21swapper/1508:14:417
5458991419,94cyclictest0-21swapper/2012:13:5913
5458991419,94cyclictest0-21swapper/2012:13:5913
5458991418,87cyclictest0-21swapper/2011:46:1213
5458991418,87cyclictest0-21swapper/2011:46:1213
5458991410,89cyclictest0-21swapper/2011:16:3013
5458991410,89cyclictest0-21swapper/2011:16:3013
54389914131,64cyclictest0-21swapper/1509:47:237
54389914130,67cyclictest0-21swapper/1510:45:237
5438991410,84cyclictest0-21swapper/1509:10:157
54899914024,105cyclictest0-21swapper/2710:40:0120
54389914029,71cyclictest0-21swapper/1511:55:247
54389914029,71cyclictest0-21swapper/1511:55:247
26172140130,7sleep60-21swapper/607:05:2128
26172140130,7sleep60-21swapper/607:05:2128
54669913911,96cyclictest0-21swapper/2210:47:3715
54389913955,64cyclictest0-21swapper/1509:35:227
54389913931,66cyclictest0-21swapper/1509:44:277
54389913845,61cyclictest0-21swapper/1511:54:517
54389913845,61cyclictest0-21swapper/1511:54:517
5458991378,128cyclictest0-21swapper/2011:00:1313
54389913755,64cyclictest0-21swapper/1507:20:107
54389913752,59cyclictest0-21swapper/1511:06:147
54389913729,63cyclictest0-21swapper/1512:25:207
54389913729,63cyclictest0-21swapper/1512:25:207
54129913717,117cyclictest151rcu_preempt09:35:172
54389913629,60cyclictest0-21swapper/1512:31:137
54389913629,60cyclictest0-21swapper/1512:31:137
5438991360,82cyclictest0-21swapper/1509:30:177
5438991360,81cyclictest0-21swapper/1512:10:547
5438991360,81cyclictest0-21swapper/1512:10:547
5438991360,79cyclictest0-21swapper/1508:21:387
54389913530,64cyclictest0-21swapper/1507:10:167
54389913530,59cyclictest0-21swapper/1508:45:087
54389913529,68cyclictest0-21swapper/1511:00:207
54389913527,67cyclictest0-21swapper/1512:00:137
54389913527,67cyclictest0-21swapper/1512:00:137
5438991350,82cyclictest0-21swapper/1511:15:197
5438991350,82cyclictest0-21swapper/1511:15:197
5412991350,75cyclictest0-21swapper/1007:15:012
54899913431,68cyclictest0-21swapper/2709:39:5120
54389913449,52cyclictest0-21swapper/1512:36:337
54389913449,52cyclictest0-21swapper/1512:36:337
54389913430,62cyclictest0-21swapper/1512:07:097
54389913430,62cyclictest0-21swapper/1512:07:097
54389913357,67cyclictest0-21swapper/1507:28:117
54389913329,62cyclictest0-21swapper/1511:43:397
54389913329,62cyclictest0-21swapper/1511:43:397
5466991311,83cyclictest0-21swapper/2209:51:3115
54389913135,64cyclictest0-21swapper/1509:15:037
54389913131,76cyclictest0-21swapper/1511:30:497
54389913131,76cyclictest0-21swapper/1511:30:497
54389913129,61cyclictest0-21swapper/1511:13:437
54389913129,61cyclictest0-21swapper/1511:13:437
54389913124,64cyclictest0-21swapper/1509:04:237
54899913027,66cyclictest0-21swapper/2710:25:1620
5438991300,80cyclictest0-21swapper/1507:19:047
54899912959,68cyclictest0-21swapper/2710:42:2320
54899912928,70cyclictest0-21swapper/2708:40:3120
54899912928,65cyclictest0-21swapper/2710:15:2320
54899912927,71cyclictest0-21swapper/2711:20:3720
54899912927,67cyclictest0-21swapper/2711:28:2120
54899912927,67cyclictest0-21swapper/2711:28:2120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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