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2026-04-07 - 18:31
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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 10 highest latencies:
System rackdslot1.osadl.org (updated Tue Apr 07, 2026 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17899996932,9cyclictest25-21ksoftirqd/110:05:271
32162660,4sleep30-21swapper/310:05:233
17901996524,5cyclictest41-21ksoftirqd/307:21:023
17901996432,4cyclictest41-21ksoftirqd/307:40:363
17901996421,7cyclictest41-21ksoftirqd/308:41:423
17899996317,7cyclictest25-21ksoftirqd/111:30:151
1789899611,8cyclictest9-21ksoftirqd/007:36:150
193872600,4sleep00-21swapper/008:20:260
17899996022,3cyclictest121rcu_preempt11:05:211
134491600,4ptp4l4222-21apt-get09:00:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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