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2026-01-07 - 11:12
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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 rack0slot0.osadl.org (updated Wed Jan 07, 2026 00:45:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1602421180,3sleep0348999cyclictest00:33:540
187872850,0sleep60-21swapper/621:19:346
218872810,12sleep280250irq/25-eno1-rx-23:10:142
280462800,1sleep40-21swapper/422:49:564
208622770,0sleep40-21swapper/422:59:424
58322750,0sleep50-21swapper/523:43:345
48242750,0sleep70-21swapper/721:21:297
276482750,0sleep50-21swapper/500:21:005
189752750,1sleep2321ktimersoftd/221:33:492
139812750,0sleep00-21swapper/023:51:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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