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2026-04-10 - 13:12
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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 Fri Apr 10, 2026 00:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
54077199162159,1cyclictest775-21avahi-daemon21:05:016
540766998811,18cyclictest0-21swapper/123:20:161
540769997820,39cyclictest692919-21cat23:45:024
540769997759,18cyclictest601ktimers/421:20:324
540769997759,18cyclictest601ktimers/421:20:324
540769997717,39cyclictest666984-21ld22:55:184
540770997513,23cyclictest0-21swapper/519:55:165
540769997517,39cyclictest661693-21proc_pri22:45:244
540765997314,19cyclictest0-21swapper/000:35:140
540769997214,39cyclictest682164-21apt-get23:25:114
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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