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2025-12-20 - 09:41
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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 Dec 20, 2025 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
180662603583,14sleep00-21swapper/019:07:060
18392994794,458cyclictest0-21swapper/121:03:071
18392994704,447cyclictest0-21swapper/119:10:451
18392994704,447cyclictest0-21swapper/119:10:441
1839099389331,51cyclictest0-21swapper/021:03:070
1839099370318,45cyclictest0-21swapper/019:10:440
1839099370318,45cyclictest0-21swapper/019:10:440
228699980,4rtkit-daemon2285-21rtkit-daemon23:17:511
18392999419,37cyclictest0-21swapper/122:53:591
18392999418,34cyclictest0-21swapper/100:31:591
228699930,28rtkit-daemon2285-21rtkit-daemon22:48:361
18390999318,67cyclictest0-21swapper/023:44:580
1790029133,32sleep10-21swapper/119:05:251
1839299908,54cyclictest25070-21ssh23:49:591
18392998818,31cyclictest0-21swapper/119:50:591
18392998813,60cyclictest0-21swapper/121:06:591
228699850,4rtkit-daemon2285-21rtkit-daemon21:36:041
228699830,4rtkit-daemon2285-21rtkit-daemon21:29:500
228699820,4rtkit-daemon2285-21rtkit-daemon23:03:511
228699820,3rtkit-daemon2285-21rtkit-daemon22:20:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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