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2025-12-16 - 00:43
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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 rack5slot3.osadl.org (updated Mon Dec 15, 2025 12:50:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2000829993,3sleep60-21swapper/607:05:156
2110529581,9sleep70-21swapper/707:05:567
1879428353,6sleep40-21swapper/407:05:054
2053227755,20sleep20-21swapper/207:05:192
2135327440,30sleep30-21swapper/307:09:293
2115027440,30sleep50-21swapper/507:06:345
2109827439,30sleep00-21swapper/007:05:490
2116427340,29sleep10-21swapper/107:06:461
21822995210,0cyclictest0-21swapper/312:20:113
32212510,1sleep03218-21cat09:20:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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