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2026-10-18 - 00:24
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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 rack5slot2.osadl.org (updated Sat Oct 17, 2026 12:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
128942202185,12sleep10-21swapper/107:05:551
129482192176,12sleep30-21swapper/307:06:383
130892186169,12sleep00-21swapper/007:08:260
109932173154,14sleep20-21swapper/207:05:082
231802480,0sleep20-21swapper/212:33:042
19992450,0sleep10-21swapper/112:05:251
228872430,0sleep10-21swapper/110:05:151
275172420,0sleep00-21swapper/009:50:490
111702390,0sleep00-21swapper/011:37:450
172262140,0sleep20-21swapper/210:02:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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