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2026-07-05 - 08:36
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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 Sun Jul 05, 2026 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3963220415,68sleep24008-21awk18:57:422
41339911931,43cyclictest0-21swapper/122:32:561
3663211210,20sleep00-21swapper/018:53:450
41379911155,11cyclictest277-21dbus-daemon22:07:422
4129991047,80cyclictest5272-21apt-get23:27:580
4129991033,69cyclictest3414-21ssh21:37:590
4133991013,75cyclictest7215-21apt-get22:38:051
41339910125,39cyclictest26845-21tune2fs21:23:041
4137999913,76cyclictest5859-21ssh23:29:062
412999998,79cyclictest3317-21apt-get00:17:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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