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2026-05-25 - 08:24
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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 20 highest latencies:
System rack1slot8.osadl.org (updated Mon May 25, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1779499868829,25cyclictest0-21swapper/119:10:291
17793995137,442cyclictest0-21swapper/020:10:080
1779499475408,61cyclictest0-21swapper/120:10:091
175392420397,15sleep00-21swapper/019:07:530
173792396376,14sleep10-21swapper/119:06:151
228699900,3rtkit-daemon2285-21rtkit-daemon23:38:000
228699890,3rtkit-daemon835-21lldpad20:29:471
228699840,4rtkit-daemon2285-21rtkit-daemon21:32:280
205642840,3sleep120563-21grep22:50:181
228699800,8rtkit-daemon2285-21rtkit-daemon22:25:140
228699800,4rtkit-daemon2285-21rtkit-daemon23:50:200
228699790,3rtkit-daemon2285-21rtkit-daemon21:23:581
228699770,5rtkit-daemon2285-21rtkit-daemon23:15:491
228699770,4rtkit-daemon2285-21rtkit-daemon22:07:521
228699770,4rtkit-daemon2285-21rtkit-daemon00:22:310
228699770,32rtkit-daemon14277-21ssh22:39:240
296672760,3sleep0221rcuc/021:10:220
228699760,4rtkit-daemon2285-21rtkit-daemon23:48:341
228699740,4rtkit-daemon2285-21rtkit-daemon20:15:170
228699730,4rtkit-daemon2285-21rtkit-daemon22:03:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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