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2025-07-19 - 11:02
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Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 50 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 rack5slot7.osadl.org (updated Sat Jul 19, 2025 00:44:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24560225260,13sleep022716-1kworker/u3:017:42:260
258749910613,70cyclictest5007-21/usr/sbin/munin20:53:170
258749910515,74cyclictest0-21swapper21:06:490
258749910427,61cyclictest0-21swapper20:15:210
258749910418,65cyclictest1059-21apt-get22:17:320
258749910416,70cyclictest18068-21munin-run21:32:100
258749910334,51cyclictest0-21swapper22:45:400
258749910315,50cyclictest17194-21ssh23:04:480
258749910242,44cyclictest26150-21sh20:19:110
258749910233,55cyclictest13361-21grep22:53:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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