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2026-05-14 - 13:39
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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 rackaslot8.osadl.org (updated Thu May 14, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
317382280250,20sleep20-21swapper/219:08:562
316942277248,19sleep10-21swapper/119:08:231
316202264238,18sleep00-21swapper/019:07:250
316812258231,18sleep30-21swapper/319:08:133
236382670,0sleep00-21swapper/022:47:040
185852670,0sleep30-21swapper/322:25:013
174572640,0sleep20-21swapper/222:05:112
6252630,1sleep3624-21smartctl00:30:183
268322610,0sleep20-21swapper/223:09:102
224432610,0sleep00-21swapper/021:48:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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