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2026-04-08 - 13:34
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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 Wed Apr 08, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
723699996,73cyclictest14616-21apt-get21:03:521
7236999719,58cyclictest19642-21apt-get19:38:551
7231999763,10cyclictest181rcu_preempt21:19:000
7231999761,8cyclictest181rcu_preempt20:53:510
723699966,38cyclictest31180-21apt-get22:24:261
7231999455,14cyclictest300-21rs:main0
7231999333,35cyclictest15-21ksoftirqd/020:46:110
7231999263,8cyclictest181rcu_preempt19:59:160
586429218,33sleep10-21swapper/118:58:581
7231999158,21cyclictest5339-21ssh22:34:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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