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2026-07-30 - 09:34
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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 Thu Jul 30, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
78769917931714,50cyclictest0-21swapper/019:10:030
787699972854,54cyclictest0-21swapper/019:26:390
787799925806,47cyclictest0-21swapper/119:26:391
75722777754,16sleep00-21swapper/019:07:140
787799476425,36cyclictest0-21swapper/119:10:021
2286991270,8rtkit-daemon2285-21rtkit-daemon19:05:331
2286991190,13rtkit-daemon0-21swapper/020:30:040
2286991020,12rtkit-daemon0-21swapper/021:11:550
7877998812,65cyclictest0-21swapper/100:11:591
298782840,3sleep029948-21df_abs20:10:140
7877998314,58cyclictest0-21swapper/120:49:591
228699830,5rtkit-daemon2285-21rtkit-daemon21:39:151
228699800,38rtkit-daemon2285-21rtkit-daemon23:45:281
228699790,4rtkit-daemon2285-21rtkit-daemon00:03:230
228699760,4rtkit-daemon2285-21rtkit-daemon00:32:130
228699750,4rtkit-daemon2285-21rtkit-daemon21:52:201
228699750,17rtkit-daemon0-21swapper/022:22:111
228699740,4rtkit-daemon2285-21rtkit-daemon22:19:410
228699740,4rtkit-daemon2285-21rtkit-daemon00:29:331
228699730,4rtkit-daemon2285-21rtkit-daemon23:28:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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