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2025-08-21 - 21:33
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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 rack9slot2.osadl.org (updated Thu Aug 21, 2025 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20642258202,44sleep10-21swapper/11
19272255187,24sleep00-21swapper/00
17962250185,23sleep30-21swapper/33
227399244238,4cyclictest6897-21perf0
227399244238,4cyclictest6897-21perf0
228399230224,4cyclictest6891-21sendmail2
228399230224,4cyclictest6891-21sendmail2
19902230192,25sleep20-21swapper/22
228799226220,4cyclictest6853-21munin-run3
228799226220,4cyclictest6853-21munin-run3
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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