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2026-03-24 - 04:12
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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 Mar 24, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
278212950,6sleep127826-21cat21:45:461
164522830,8sleep10-21swapper/121:15:251
316728227,44sleep10-21swapper/119:06:331
327527719,49sleep00-21swapper/019:07:420
3667997437,31cyclictest14-21ksoftirqd/023:30:260
3667997434,9cyclictest14-21ksoftirqd/022:00:010
3667997236,31cyclictest14-21ksoftirqd/020:50:140
319162710,8sleep126-21ksoftirqd/123:30:001
366799706,55cyclictest12284-21apt-get00:05:140
3667997054,11cyclictest14-21ksoftirqd/021:05:130
3667996934,30cyclictest14-21ksoftirqd/020:58:210
3667996830,32cyclictest14-21ksoftirqd/020:40:090
3674996736,9cyclictest26-21ksoftirqd/119:10:221
366799676,23cyclictest16545-21apt-get19:45:160
366799676,23cyclictest16545-21apt-get19:45:150
3667996736,26cyclictest14-21ksoftirqd/000:25:580
3667996734,28cyclictest14-21ksoftirqd/023:53:160
3667996734,27cyclictest14-21ksoftirqd/023:06:010
366799668,51cyclictest0-21swapper/021:35:120
3667996636,24cyclictest14-21ksoftirqd/022:20:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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