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2026-06-29 - 03:46
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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 Mon Jun 29, 2026 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21850216010,98sleep021916-21timerwakeupswit18:53:520
21850216010,98sleep021916-21timerwakeupswit18:53:520
225429911331,53cyclictest0-21swapper/023:28:200
225469910465,14cyclictest1618-40find23:48:061
2255899993,70cyclictest3621-21apt-get21:08:262
2255899993,70cyclictest3621-21apt-get21:08:262
22558999578,11cyclictest10481-21/usr/sbin/munin23:08:382
270632930,3sleep2371rcuc/220:48:412
270632930,3sleep2371rcuc/220:48:412
22542999365,21cyclictest0-21swapper/022:13:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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