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2026-07-27 - 23:18
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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
Characteristics of the 20 highest latencies:
System rackdslot4.osadl.org (updated Mon Jul 27, 2026 00:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591206171,24phc2sys0-21swapper/319:08:303
242012204171,22sleep20-21swapper/219:07:412
241082203169,23sleep10-21swapper/119:06:281
242242202168,22sleep00-21swapper/019:07:590
2831221500,6sleep22481499cyclictest23:35:232
24813996730,4cyclictest25-21ksoftirqd/122:35:011
24813996534,8cyclictest25-21ksoftirqd/123:10:001
24813996534,8cyclictest25-21ksoftirqd/119:40:011
24813996431,9cyclictest25-21ksoftirqd/121:05:001
24813996431,8cyclictest25-21ksoftirqd/119:30:271
24813996429,8cyclictest25-21ksoftirqd/122:20:001
24813996429,4cyclictest25-21ksoftirqd/100:25:001
24813996229,8cyclictest25-21ksoftirqd/123:05:001
24813996135,3cyclictest25-21ksoftirqd/122:30:001
24813996130,7cyclictest25-21ksoftirqd/122:05:111
24813996129,8cyclictest25-21ksoftirqd/119:50:141
24813996127,4cyclictest25-21ksoftirqd/123:40:001
24813996123,8cyclictest25-21ksoftirqd/119:55:191
24813996030,4cyclictest25-21ksoftirqd/123:45:261
24813996029,4cyclictest25-21ksoftirqd/122:35:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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