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2026-06-13 - 05:38
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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 rackbslot7.osadl.org (updated Sat Jun 13, 2026 00:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19529991243,42cyclictest352-21runrttasks22:59:211
19525991242,70cyclictest4751-21cstates19:50:250
19525991242,70cyclictest4751-21cstates19:50:250
19525991152,78cyclictest20947-21apt-get20:39:320
19525991152,78cyclictest20947-21apt-get20:39:320
19525991143,72cyclictest29057-21apt-get22:49:300
19525991143,72cyclictest29057-21apt-get22:49:300
19525991073,69cyclictest15437-21modprobe00:14:300
195439910458,29cyclictest28823-21kworker/u17:1-writeback23:49:142
195439910026,28cyclictest0-21swapper/220:29:222
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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