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2026-04-12 - 01:31
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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 Sat Apr 11, 2026 12:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34581599770,18cyclictest0-21swapper/108:50:161
345814995234,18cyclictest0-21swapper/011:33:140
345814995132,19cyclictest0-21swapper/012:08:180
345815995012,19cyclictest0-21swapper/110:35:161
345814994931,18cyclictest0-21swapper/011:07:190
345814994829,0cyclictest0-21swapper/007:58:310
345814994729,18cyclictest0-21swapper/009:38:470
34581799456,39cyclictest0-21swapper/311:10:153
34581799447,18cyclictest0-21swapper/311:00:183
34582199434,39cyclictest0-21swapper/709:05:167
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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