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2026-08-18 - 19:35
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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
Characteristics of the 100 highest latencies:
System rack6slot0.osadl.org (updated Tue Aug 18, 2026 13:01:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2744499220212,5cyclictest0-21swapper/3711:41:5031
2744499220212,5cyclictest0-21swapper/3711:41:5031
2744499220212,5cyclictest0-21swapper/3711:41:4931
2744499206198,6cyclictest0-21swapper/3708:21:5331
2744499206198,6cyclictest0-21swapper/3708:21:5331
2741899200196,2cyclictest0-21swapper/1408:35:126
2741899200196,2cyclictest0-21swapper/1408:35:126
2740499200189,9cyclictest28279-21kworker/u80:0-ext4-rsv-conversion10:41:0723
2740499200189,9cyclictest28279-21kworker/u80:0-ext4-rsv-conversion10:41:0723
2742599199195,2cyclictest0-21swapper/2008:45:1513
2742599199195,2cyclictest0-21swapper/2008:45:1413
27410991991,192cyclictest0-21swapper/808:45:2038
27410991991,192cyclictest0-21swapper/808:45:2038
2740899199194,3cyclictest0-21swapper/710:33:1737
2740899199194,3cyclictest0-21swapper/710:33:1637
2744499198193,3cyclictest0-21swapper/3711:04:5831
2744499198193,3cyclictest0-21swapper/3711:04:5831
2743599197192,3cyclictest0-21swapper/2808:25:3021
2741699193187,4cyclictest4410-21qemu-system-x8611:46:164
2741699193187,4cyclictest4410-21qemu-system-x8611:46:164
27437991911,2cyclictest0-21swapper/3012:30:2024
27437991911,2cyclictest0-21swapper/3012:30:2024
27407991911,187cyclictest0-21swapper/612:09:0336
27407991911,187cyclictest0-21swapper/612:09:0336
2741999185177,6cyclictest0-21swapper/1512:14:347
2741999185177,6cyclictest0-21swapper/1512:14:347
2741999185177,6cyclictest0-21swapper/1512:14:347
2741799184177,5cyclictest0-21swapper/1311:49:235
2741799184177,5cyclictest0-21swapper/1311:49:235
2741799184167,11cyclictest0-21swapper/1312:00:015
2741799184167,11cyclictest0-21swapper/1312:00:015
2741799184167,11cyclictest0-21swapper/1312:00:015
2741099184159,21cyclictest0-21swapper/811:42:3838
2741099184159,21cyclictest0-21swapper/811:42:3838
2741099184159,21cyclictest0-21swapper/811:42:3838
2744499183158,22cyclictest37354-21CPU31
2744499183158,22cyclictest37354-21CPU31
274399918350,130cyclictest0-21swapper/3211:25:2226
274399918350,130cyclictest0-21swapper/3211:25:2226
2740399183179,2cyclictest0-21swapper/209:49:1112
2740399183179,2cyclictest0-21swapper/209:49:1112
2741799182162,16cyclictest3548-21CPU5
2741799182162,16cyclictest3548-21CPU5
2741799182162,16cyclictest3548-21CPU5
274169918292,32cyclictest2466-21CPU4
274169918292,32cyclictest2466-21CPU4
2740899182133,22cyclictest0-21swapper/712:39:5137
2740899182133,22cyclictest0-21swapper/712:39:5137
2744499181151,13cyclictest171rcu_preempt09:05:3331
2744499181151,13cyclictest171rcu_preempt09:05:3331
2742699181178,2cyclictest0-21swapper/2108:21:2214
2742699181178,2cyclictest0-21swapper/2108:21:2214
27407991811,171cyclictest0-21swapper/608:40:0036
27407991811,171cyclictest0-21swapper/608:39:5936
2744499180164,10cyclictest0-21swapper/3711:12:2231
2744499180164,10cyclictest0-21swapper/3711:12:2131
2744499180144,16cyclictest0-21swapper/3712:10:4431
2744499180144,16cyclictest0-21swapper/3712:10:4431
2744499180144,16cyclictest0-21swapper/3712:10:4431
2743599180176,2cyclictest0-21swapper/2808:15:2721
2743599180176,2cyclictest0-21swapper/2808:15:2721
2740599180155,22cyclictest0-21swapper/411:19:3234
2740599180155,22cyclictest0-21swapper/411:19:3234
2743099179168,7cyclictest0-21swapper/2511:55:5918
2743099179168,7cyclictest0-21swapper/2511:55:5918
2743099179168,7cyclictest0-21swapper/2511:55:5818
2741999179112,54cyclictest0-21swapper/1511:31:177
2741999179112,54cyclictest0-21swapper/1511:31:177
274079917964,102cyclictest37354-21CPU36
274079917964,102cyclictest37354-21CPU36
274079917964,102cyclictest37354-21CPU36
27407991791,171cyclictest0-21swapper/608:10:1236
27407991791,171cyclictest0-21swapper/608:10:1236
2743899178169,8cyclictest0-21swapper/3112:24:0925
2743899178169,8cyclictest0-21swapper/3112:24:0925
27437991781,135cyclictest0-21swapper/3010:25:2224
27437991781,135cyclictest0-21swapper/3010:25:2224
2741999178168,8cyclictest0-21swapper/1509:30:107
2741999178168,8cyclictest0-21swapper/1509:30:107
2740899178126,40cyclictest4407-21CPU37
2740899178126,40cyclictest4407-21CPU37
2744699177169,5cyclictest0-21swapper/3911:37:4533
2744699177169,5cyclictest0-21swapper/3911:37:4533
2744499177163,12cyclictest0-21swapper/3709:17:1031
2744499177163,12cyclictest0-21swapper/3709:17:1031
2742099177157,12cyclictest0-21swapper/1612:02:478
2742099177157,12cyclictest0-21swapper/1612:02:478
2742099177157,12cyclictest0-21swapper/1612:02:478
2741999176172,2cyclictest0-21swapper/1511:47:587
2741999176172,2cyclictest0-21swapper/1511:47:587
274179917672,99cyclictest0-21swapper/1309:26:405
274179917672,99cyclictest0-21swapper/1309:26:405
27410991761,91cyclictest0-21swapper/808:15:1438
27410991761,91cyclictest0-21swapper/808:15:1438
2740899176159,13cyclictest0-21swapper/709:24:5037
2740899176159,13cyclictest0-21swapper/709:24:5037
2744499175146,16cyclictest0-21swapper/3711:25:1131
2744499175146,16cyclictest0-21swapper/3711:25:1131
27410991751,68cyclictest0-21swapper/807:40:2838
27410991751,68cyclictest0-21swapper/807:40:2838
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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