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2024-12-11 - 16:54
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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 10 highest latencies:
System rack4slot6.osadl.org (updated Wed Dec 11, 2024 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28625521110,107pltrace0-21swapper/107:10:001
2862552900,86pltrace0-21swapper/507:08:425
2786928049,17sleep60-21swapper/607:05:206
2858727661,11sleep30-21swapper/307:05:493
2857027242,10sleep40-21swapper/407:05:344
2879127056,10sleep20-21swapper/207:08:202
2872926843,9sleep70-21swapper/707:07:297
2871026046,10sleep00-21swapper/007:07:140
1649752290,1pltrace0-21swapper/012:31:060
1820052270,0pltrace0-21swapper/711:40:207
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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