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2026-06-25 - 04:21
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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 Thu Jun 25, 2026 00:49:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
135309926466,2cyclictest151rcu_preempt21:11:117
3273912220,208ptp4l0-21swapper/119:05:171
3273912220,208ptp4l0-21swapper/119:05:171
135649922223,196cyclictest151rcu_preempt19:25:1813
135649922223,196cyclictest151rcu_preempt19:25:1813
134709917425,148cyclictest0-21swapper/421:54:0526
134709916925,84cyclictest0-21swapper/400:30:3626
134709916925,84cyclictest0-21swapper/400:30:3626
330891165157,6phc2sys0-21swapper/219:07:2112
330891165157,6phc2sys0-21swapper/219:07:2112
134709916425,98cyclictest0-21swapper/400:15:1426
134709916425,98cyclictest0-21swapper/400:15:1426
135049914547,43cyclictest151rcu_preempt22:14:4431
136269914347,63cyclictest0-21swapper/2823:50:5721
136269914347,63cyclictest0-21swapper/2823:50:5721
136269914245,96cyclictest0-21swapper/2822:45:2021
134709914025,81cyclictest0-21swapper/422:28:0326
13574991390,85cyclictest0-21swapper/2121:59:5814
135189913930,46cyclictest0-21swapper/1319:55:505
1351899139138,0cyclictest94-21ksoftirqd/1322:09:275
13470991390,85cyclictest0-21swapper/400:20:1326
13470991390,85cyclictest0-21swapper/400:20:1326
13518991350,79cyclictest0-21swapper/1322:44:435
135189913427,106cyclictest0-21swapper/1321:18:405
135749913325,67cyclictest0-21swapper/2123:31:5414
135189913327,86cyclictest0-21swapper/1321:20:165
135189913327,106cyclictest0-21swapper/1322:16:565
135189913326,90cyclictest0-21swapper/1322:49:005
13574991321,81cyclictest0-21swapper/2121:22:3314
13574991321,79cyclictest0-21swapper/2122:07:5914
134709913225,71cyclictest0-21swapper/422:38:3026
13638991311,81cyclictest0-21swapper/3020:26:3524
136269913130,99cyclictest0-21swapper/2821:50:1921
136269913128,101cyclictest0-21swapper/2821:46:3021
13574991310,80cyclictest0-21swapper/2121:38:0214
13574991310,76cyclictest0-21swapper/2119:25:3014
13574991310,76cyclictest0-21swapper/2119:25:3014
134709913146,57cyclictest0-21swapper/423:51:1126
134709913146,57cyclictest0-21swapper/423:51:1126
134709913038,56cyclictest0-21swapper/400:07:2126
134709913038,56cyclictest0-21swapper/400:07:2126
13574991291,75cyclictest0-21swapper/2120:00:1214
134709912927,68cyclictest0-21swapper/419:40:0126
136269912831,74cyclictest0-21swapper/2800:00:2421
136269912831,74cyclictest0-21swapper/2800:00:2421
135749912825,71cyclictest0-21swapper/2119:50:2514
135189912821,107cyclictest0-21swapper/1323:32:505
13504991280,85cyclictest0-21swapper/920:51:5331
134709912842,56cyclictest0-21swapper/423:41:3526
134709912828,66cyclictest0-21swapper/419:20:1626
134709912828,66cyclictest0-21swapper/419:20:1626
134709912825,53cyclictest0-21swapper/421:35:2326
13638991270,75cyclictest0-21swapper/3022:56:1424
135959912745,52cyclictest0-21swapper/2423:51:3417
135959912745,52cyclictest0-21swapper/2423:51:3417
135959912739,57cyclictest0-21swapper/2422:42:0017
135959912735,60cyclictest0-21swapper/2422:26:0017
135749912718,84cyclictest0-21swapper/2121:18:4814
135189912719,104cyclictest0-21swapper/1300:16:405
135189912719,104cyclictest0-21swapper/1300:16:395
134709912751,65cyclictest0-21swapper/422:41:4226
134709912750,58cyclictest0-21swapper/423:29:1626
134709912726,66cyclictest0-21swapper/420:40:2326
134709912725,67cyclictest0-21swapper/419:55:1226
134709912724,67cyclictest0-21swapper/422:11:0626
135959912650,55cyclictest0-21swapper/2400:27:3417
135959912650,55cyclictest0-21swapper/2400:27:3317
135959912643,53cyclictest0-21swapper/2423:37:3917
135959912634,66cyclictest0-21swapper/2422:50:5517
135959912627,69cyclictest0-21swapper/2423:31:4517
135959912621,70cyclictest0-21swapper/2421:41:3817
134709912639,59cyclictest0-21swapper/421:05:0126
134709912634,67cyclictest0-21swapper/422:56:4326
134709912628,65cyclictest0-21swapper/400:00:1626
134709912628,65cyclictest0-21swapper/400:00:1526
134709912626,68cyclictest0-21swapper/420:15:4526
134709912626,66cyclictest0-21swapper/420:30:0026
134709912626,63cyclictest0-21swapper/421:22:4326
134709912625,70cyclictest0-21swapper/421:10:1726
134709912625,67cyclictest0-21swapper/419:40:0226
134709912625,67cyclictest0-21swapper/419:40:0126
134709912620,67cyclictest0-21swapper/420:50:0126
136269912525,33cyclictest0-21swapper/2821:11:1421
135959912538,65cyclictest0-21swapper/2420:10:1517
135959912525,60cyclictest0-21swapper/2422:35:0617
13574991251,73cyclictest0-21swapper/2121:31:0614
134709912547,53cyclictest0-21swapper/421:19:5526
134709912539,56cyclictest0-21swapper/420:14:4426
134709912528,63cyclictest0-21swapper/423:49:5126
134709912527,68cyclictest0-21swapper/421:30:1426
134709912527,65cyclictest0-21swapper/421:00:1426
134709912527,63cyclictest0-21swapper/423:10:0226
134709912527,60cyclictest0-21swapper/423:05:1126
134709912526,67cyclictest0-21swapper/420:55:2226
134709912526,62cyclictest0-21swapper/421:28:5826
134709912523,62cyclictest0-21swapper/419:15:2526
134709912523,62cyclictest0-21swapper/419:15:2526
136469912435,61cyclictest151rcu_preempt19:50:1625
135959912444,52cyclictest0-21swapper/2421:08:1317
135959912439,56cyclictest0-21swapper/2422:57:0917
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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