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2025-04-23 - 16:43
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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 Wed Apr 23, 2025 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1047999844767,61cyclictest0-21swapper/009:12:380
1048099806731,63cyclictest0-21swapper/109:12:381
10479995304,12cyclictest0-21swapper/007:10:190
1048099481418,56cyclictest0-21swapper/107:10:191
102682466445,14sleep10-21swapper/107:08:131
397421070,3sleep041ktimersoftd/010:38:110
249902990,3sleep024995-21latency_hist12:20:000
10480999814,68cyclictest0-21swapper/107:20:581
216899940,11rtkit-daemon0-21swapper/008:56:490
10480999411,66cyclictest0-21swapper/112:28:001
216899810,4rtkit-daemon2167-21rtkit-daemon09:45:551
216899800,4rtkit-daemon2167-21rtkit-daemon11:09:281
216899790,4rtkit-daemon2167-21rtkit-daemon11:51:081
10480997911,51cyclictest0-21swapper/110:04:591
216899780,5rtkit-daemon2167-21rtkit-daemon10:46:171
216899780,4rtkit-daemon2167-21rtkit-daemon07:40:151
187082780,3sleep041ktimersoftd/012:08:460
216899760,3rtkit-daemon2167-21rtkit-daemon11:12:231
216899760,14rtkit-daemon2167-21rtkit-daemon09:51:060
216899750,12rtkit-daemon0-21swapper/011:37:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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