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2026-08-23 - 20:52
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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 rackfslot7.osadl.org (updated Sun Aug 23, 2026 12:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41245999822,79cyclictest0-21swapper/009:15:180
412462997416,39cyclictest582517-21timerandwakeup12:15:233
412464997011,40cyclictest0-21swapper/509:20:155
412462997011,19cyclictest0-21swapper/309:50:163
412462996931,38cyclictest0-21swapper/307:32:553
412462996828,39cyclictest0-21swapper/309:28:473
41246299668,39cyclictest0-21swapper/308:04:333
412462996424,39cyclictest0-21swapper/311:20:003
412462996323,39cyclictest0-21swapper/309:41:243
412462996018,19cyclictest0-21swapper/308:00:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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