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2026-05-04 - 05:11
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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 May 04, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31692212513,77sleep031730-21grep18:57:190
561991192,81cyclictest30100-21apt-get22:32:081
31518210919,42sleep20-21swapper/218:57:052
3173421089,73sleep131789-21/usr/sbin/munin18:57:201
561991023,69cyclictest19645-21apt-get19:57:081
5679910132,26cyclictest14946-21runrttasks22:59:132
5619910070,9cyclictest181rcu_preempt23:27:171
5619910070,9cyclictest181rcu_preempt23:27:171
561999547,9cyclictest181rcu_preempt20:52:141
567999444,39cyclictest31206-21apt-get20:32:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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