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2026-04-21 - 20:43
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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 Tue Apr 21, 2026 12:44:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4466991152,94cyclictest21764-21ssh10:13:020
3567211213,71sleep03588-21pluginstate06:58:250
1948421090,7sleep015313-21kworker/u17:2+xprtiod11:03:050
4466991042,80cyclictest30873-21apt-get10:28:180
44669910179,13cyclictest17188-21kworker/u19:1-rpciod11:53:150
44669910179,13cyclictest17188-21kworker/u19:1-rpciod11:53:150
4475999717,49cyclictest11554-21seq09:02:262
447199973,68cyclictest27136-21apt-get09:28:031
447199973,68cyclictest27136-21apt-get09:28:031
4475999148,35cyclictest0-21swapper/209:13:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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