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2024-07-16 - 08:41
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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 20 highest latencies:
System rack4slot6.osadl.org (updated Tue Jul 16, 2024 00:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18679521220,113pltrace0-21swapper/119:05:291
21466521120,109pltrace0-21swapper/319:08:463
21466521010,93pltrace0-21swapper/719:07:377
1656921010,1sleep2361rcuc/222:50:132
1867952980,82pltrace0-21swapper/519:06:525
320402800,0sleep70-21swapper/720:25:007
2150127547,10sleep20-21swapper/219:07:572
2132727142,10sleep40-21swapper/419:05:494
2144226754,9sleep60-21swapper/619:07:296
2156426652,10sleep00-21swapper/019:08:510
312122340,1sleep40-21swapper/422:16:184
2795852340,1pltrace0-21swapper/319:17:323
118152280,0pltrace0-21swapper/700:20:327
118152280,0pltrace0-21swapper/700:20:327
21837992013,3cyclictest78-21ksoftirqd/722:55:307
2181899200,19cyclictest0-21swapper/323:55:163
1895752200,3pltrace54-21ksoftirqd/421:02:264
896652190,13pltrace54-21ksoftirqd/421:40:014
950152180,0pltrace0-21swapper/719:45:277
677752180,0pltrace0-21swapper/700:31:467
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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