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2026-05-20 - 21:22
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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 May 20, 2026 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
166052800,1sleep116607-21kworker/u16:010:01:151
216002790,0sleep50-21swapper/511:48:585
57952760,0sleep50-21swapper/512:00:295
117132760,1sleep311712-21sshd10:28:353
218252750,0sleep70-21swapper/711:11:427
45492740,0sleep60-21swapper/609:36:216
299942740,0sleep1221rcuc/111:12:551
243582730,0sleep00-21swapper/012:17:140
243582730,0sleep00-21swapper/012:17:140
229192730,1sleep20-21swapper/210:25:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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