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2025-06-17 - 02:23
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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 50 highest latencies:
System rack4slot6.osadl.org (updated Tue Jun 17, 2025 00:44:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26451521340,49pltrace0-21swapper/719:05:237
2645152960,92pltrace0-21swapper/519:05:225
2645152790,74pltrace0-21swapper/119:05:131
2950527359,10sleep20-21swapper/219:08:522
2944927359,10sleep30-21swapper/319:08:053
2954327045,13sleep40-21swapper/419:09:264
2927526046,10sleep60-21swapper/619:05:366
2942825943,12sleep00-21swapper/019:07:470
2113952270,0pltrace0-21swapper/720:49:227
2113952270,0pltrace0-21swapper/720:49:227
211652260,4pltrace0-21swapper/723:10:147
3125252220,6pltrace78-21ksoftirqd/720:08:397
29809992011,5cyclictest0-21swapper/120:53:431
29809992011,5cyclictest0-21swapper/120:53:431
1170952200,5pltrace0-21swapper/719:30:327
2980499190,8cyclictest0-21swapper/019:43:340
2980999180,7cyclictest0-21swapper/100:29:381
2890152180,0pltrace0-21swapper/722:56:147
892552170,0pltrace0-21swapper/719:25:317
382352170,11pltrace4219-21latency_hist22:14:592
29836991710,6cyclictest0-21swapper/720:11:257
2983699171,4cyclictest0-21swapper/700:20:067
2983699170,14cyclictest0-21swapper/723:30:007
29828991714,2cyclictest0-21swapper/600:38:366
2982899171,8cyclictest0-21swapper/623:58:536
2982899171,8cyclictest0-21swapper/623:58:536
29820991712,3cyclictest0-21swapper/421:32:224
2980999171,15cyclictest0-21swapper/121:09:161
29804991711,5cyclictest0-21swapper/000:29:030
2719952170,0pltrace0-21swapper/723:55:157
2719952170,0pltrace0-21swapper/723:55:157
1435852170,3pltrace0-21swapper/700:26:487
614052160,3pltrace0-21swapper/719:20:307
382352160,11pltrace54-21ksoftirqd/422:14:554
3062052160,3pltrace0-21swapper/722:05:217
29836991614,1cyclictest0-21swapper/719:50:037
29836991611,4cyclictest0-21swapper/720:33:267
29836991611,3cyclictest0-21swapper/722:21:007
29836991611,3cyclictest0-21swapper/721:52:187
29836991611,3cyclictest0-21swapper/721:24:597
2982899161,14cyclictest0-21swapper/619:45:236
29823991611,4cyclictest0-21swapper/520:26:505
2982399161,8cyclictest0-21swapper/523:27:215
2982399161,14cyclictest0-21swapper/519:16:095
2982399160,15cyclictest0-21swapper/519:28:345
29820991611,4cyclictest0-21swapper/422:21:584
2982099160,4cyclictest0-21swapper/419:14:334
2982099160,2cyclictest0-21swapper/423:45:164
2982099160,15cyclictest0-21swapper/421:20:584
29815991611,3cyclictest0-21swapper/322:37:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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