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2025-10-22 - 17:38
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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 rack1slot8.osadl.org (updated Wed Oct 22, 2025 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2031599928851,46cyclictest0-21swapper/107:11:561
2031499850768,47cyclictest11082-21munin-run09:30:000
2031499808728,51cyclictest0-21swapper/007:11:550
2031599736693,28cyclictest0-21swapper/109:30:001
202442533510,16sleep00-21swapper/007:09:370
201882507488,12sleep10-21swapper/107:09:071
20314999181,6cyclictest18639-21ssh11:30:590
20315998733,32cyclictest0-21swapper/109:41:591
216899820,4rtkit-daemon2167-21rtkit-daemon12:36:240
20314998111,63cyclictest0-21swapper/008:54:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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