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2025-04-29 - 12:59
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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 rack3slot6.osadl.org (updated Tue Apr 29, 2025 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
159429911487,15cyclictest14-21ksoftirqd/023:30:120
159429910575,21cyclictest14-21ksoftirqd/020:00:180
159429910572,23cyclictest14-21ksoftirqd/020:45:140
159429910375,18cyclictest14-21ksoftirqd/019:55:200
159429910269,19cyclictest14-21ksoftirqd/000:35:170
159429910173,19cyclictest14-21ksoftirqd/023:15:160
159429910112,78cyclictest0-21swapper/021:55:150
159429910069,18cyclictest14-21ksoftirqd/000:00:140
159429910012,79cyclictest0-21swapper/019:25:150
15804210029,24sleep10-21swapper/119:09:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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