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2026-05-09 - 08:53
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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 rack1slot8.osadl.org (updated Sat May 09, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3090299918836,50cyclictest0-21swapper/119:37:431
3090199891808,54cyclictest0-21swapper/019:37:420
3090299849768,49cyclictest0-21swapper/119:10:061
3090199818740,51cyclictest0-21swapper/019:10:070
305342614590,17sleep00-21swapper/019:06:370
306552540521,13sleep10-21swapper/119:07:521
30901991105,98cyclictest0-21swapper/021:59:000
62572870,16sleep03090199cyclictest23:55:360
3090299806,23cyclictest0-21swapper/122:52:251
228699780,4rtkit-daemon2285-21rtkit-daemon23:13:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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