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2026-08-12 - 13:22
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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 rack3slot6.osadl.org (updated Wed Aug 12, 2026 00:45:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6702999748,40cyclictest25450-21apt-get21:30:150
627828923,16sleep10-21swapper/119:07:291
6702998640,12cyclictest1536-21apt-get23:25:120
6702998640,12cyclictest1536-21apt-get23:25:120
6702998554,17cyclictest32141-21apt-get20:20:140
63532848,28sleep00-21swapper/019:08:170
6702998151,19cyclictest26862-21apt-get20:05:210
6702998151,19cyclictest26862-21apt-get20:05:210
6702998044,30cyclictest0-21swapper/021:50:120
670499793,69cyclictest5361-21latency_hist20:35:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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