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2026-05-05 - 19:53
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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 rackcslot4.osadl.org (updated Tue May 05, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4019082275215,45sleep00-21swapper/007:08:260
4018332271211,44sleep10-21swapper/107:07:391
4959302690,5sleep10-21swapper/110:15:001
5342252640,4sleep00-21swapper/011:05:210
40214999620,28cyclictest450430-21ssh09:10:010
40214999612,39cyclictest563653-21apt-get11:45:130
40215399602,38cyclictest503523-21apt-get10:25:131
40214999601,40cyclictest476366-21apt-get09:48:070
40214999601,30cyclictest544450-21python311:20:030
40214999600,28cyclictest570948-21munin-run11:55:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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