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2024-07-16 - 08:38
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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 Tue Jul 16, 2024 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1472621270,4chrt14727-21/usr/sbin/munin21:55:190
2268221180,4chrt22681-21timerandwakeup22:15:400
284142860,4sleep028416-21latency_hist00:00:030
1859999848,19cyclictest28484-21apt-get00:00:110
1859999848,16cyclictest6866-21apt-get00:30:110
1825528416,28sleep00-21swapper/019:08:270
1859999817,16cyclictest22761-21apt-get19:20:120
1859999817,16cyclictest16266-21apt-get22:00:130
1859999808,15cyclictest6495-21apt-get23:00:100
1859999806,15cyclictest5057-21apt-get20:00:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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