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2026-07-12 - 00:06
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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 Sat Jul 11, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
119139919241881,35cyclictest23641-21uname09:10:190
118232737714,16sleep10-21swapper/107:09:311
116342617594,15sleep00-21swapper/007:07:370
1191499479394,53cyclictest0-21swapper/107:10:151
1191499410381,15cyclictest23642-21cut09:10:191
1191399373287,57cyclictest41ktimersoftd/007:10:150
228699940,4rtkit-daemon2285-21rtkit-daemon11:48:371
11914998946,37cyclictest0-21swapper/109:27:001
228699850,4rtkit-daemon2285-21rtkit-daemon10:23:350
11914998237,38cyclictest0-21swapper/107:53:581
228699800,4rtkit-daemon2285-21rtkit-daemon10:57:111
228699800,4rtkit-daemon2285-21rtkit-daemon10:57:101
228699800,4rtkit-daemon2285-21rtkit-daemon10:16:541
228699790,4rtkit-daemon2285-21rtkit-daemon10:06:591
228699790,37rtkit-daemon2285-21rtkit-daemon11:26:321
228699780,5rtkit-daemon2285-21rtkit-daemon09:39:240
228699780,4rtkit-daemon2285-21rtkit-daemon12:06:131
228699780,4rtkit-daemon2285-21rtkit-daemon11:32:371
228699780,4rtkit-daemon2285-21rtkit-daemon10:47:351
228699770,4rtkit-daemon2285-21rtkit-daemon12:08:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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