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2025-09-18 - 04:11
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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 rackfslot7.osadl.org (updated Thu Sep 18, 2025 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3486041997213,19cyclictest3564262-21munin-run21:30:015
3486041997213,19cyclictest0-21swapper/520:25:175
3486041997212,59cyclictest0-21swapper/500:04:485
3486041997113,0cyclictest0-21swapper/521:35:175
3486041997113,0cyclictest0-21swapper/521:35:165
348604199699,59cyclictest3608554-21/usr/sbin/munin22:50:145
3486041996930,38cyclictest3632186-21ls23:30:195
3486041996930,19cyclictest0-21swapper/522:07:305
348604199656,19cyclictest0-21swapper/500:35:135
348604199653,40cyclictest3491596-21systemctl19:20:015
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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