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2026-06-30 - 11:03
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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 20 highest latencies:
System rack3slot6.osadl.org (updated Tue Jun 30, 2026 00:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18247999812,78cyclictest0-21swapper/023:20:130
270942920,5chrt27093-21cut21:05:161
18247998833,42cyclictest14-21ksoftirqd/021:10:150
18247998815,58cyclictest0-21swapper/021:20:130
18247998814,61cyclictest0-21swapper/020:05:150
1824799876,68cyclictest17724-21apt-get22:10:130
1824799876,68cyclictest17724-21apt-get22:10:130
1824799876,66cyclictest1133-21apt-get00:25:130
18247998714,59cyclictest0-21swapper/021:25:140
18247998664,12cyclictest0-21swapper/019:15:150
18247998616,65cyclictest243-21systemd-journal20:26:410
18247998616,58cyclictest0-21swapper/000:00:100
18247998615,57cyclictest0-21swapper/021:05:140
1824799857,67cyclictest19769-21apt-get22:15:240
1824799856,67cyclictest384-21apt-get19:50:130
1824799856,62cyclictest27561-21apt-get19:35:130
18247998514,55cyclictest0-21swapper/019:30:130
1824799847,62cyclictest31823-21apt-get00:20:150
1824799847,61cyclictest28326-21apt-get00:10:150
1824799846,63cyclictest4609-21apt-get00:35:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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