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2026-05-09 - 12:59
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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 rack3slot0.osadl.org (updated Sat May 09, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1900921000,2sleep4220999cyclictest21:10:044
74402580,0sleep0218199cyclictest21:48:050
265332580,1sleep026534-21sshd21:16:490
35692570,2sleep5221499cyclictest21:15:265
67752510,0sleep20-21swapper/223:26:102
258032510,0sleep60-21swapper/622:12:056
115432510,1sleep011541-21grepconf.sh22:43:550
299062490,6sleep685150irq/25-em1-rx-000:21:246
114152490,0sleep20-21swapper/222:17:062
142102480,0sleep40-21swapper/421:57:544
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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