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2026-09-19 - 08:27
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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 rack0slot3.osadl.org (updated Sat Sep 19, 2026 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3528836994230,423cyclictest0-21swapper/023:55:010
3528836994220,0cyclictest0-21swapper/000:05:000
35283392409391,12sleep130-21swapper/1319:06:025
35284422401396,3sleep150-21swapper/1519:07:247
35283832361354,5sleep140-21swapper/1419:06:356
35283482361355,4sleep40-21swapper/419:06:0910
35284352355313,14sleep80-21swapper/819:07:1714
35284342347327,13sleep70-21swapper/719:07:1613
35284942346327,13sleep100-21swapper/1019:08:082
35282802346340,4sleep120-21swapper/1219:05:294
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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