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2026-06-14 - 17:02
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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 Sun Jun 14, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
313312593570,15sleep00-21swapper/007:06:310
3171299451365,79cyclictest0-21swapper/007:10:340
3171399417350,30cyclictest0-21swapper/107:10:351
3171299362293,51cyclictest0-21swapper/009:14:040
3171399349282,48cyclictest0-21swapper/109:14:041
313582266248,12sleep10-21swapper/107:06:481
2286991310,11rtkit-daemon0-21swapper/011:29:090
228699810,4rtkit-daemon2285-21rtkit-daemon12:03:361
228699810,4rtkit-daemon2285-21rtkit-daemon11:39:051
31712997630,26cyclictest17154-21ssh09:20:260
31712997330,17cyclictest18132-21ssh12:16:090
31712997244,21cyclictest0-21swapper/009:45:190
31712997028,27cyclictest24493-21ssh09:34:570
31712997027,33cyclictest14040-21ntp_kernel_err09:15:210
31712997024,31cyclictest26471-21latency_hist08:25:010
31712996944,20cyclictest0-21swapper/010:43:030
31712996928,34cyclictest6088-21ssh09:59:590
31712996928,18cyclictest29755-21ssh11:40:150
31712996928,18cyclictest29755-21ssh11:40:140
31712996927,17cyclictest2781-21ssh11:50:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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