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2026-04-06 - 20:50
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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 Mon Apr 06, 2026 12:44:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3329910556,14cyclictest181rcu_preempt11:53:580
3559910477,19cyclictest18225-21sh12:04:052
326372976,18sleep20-21swapper/207:03:292
355999463,23cyclictest16359-21sh09:18:462
355999361,12cyclictest181rcu_preempt11:24:042
355999042,16cyclictest435-21ssh12:28:502
355999028,20cyclictest0-21swapper/208:35:142
340999066,17cyclictest10307-21awk09:08:441
340999066,17cyclictest10307-21awk09:08:441
340998863,19cyclictest7284-21latency_hist07:23:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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