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2026-05-15 - 22:32
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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 Fri May 15, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1683199981845,42cyclictest0-21swapper/107:12:041
1683099832728,71cyclictest0-21swapper/007:12:030
168319912014,62cyclictest0-21swapper/107:57:001
16831999810,71cyclictest0-21swapper/108:11:591
16831999614,66cyclictest0-21swapper/112:34:591
16831999614,66cyclictest0-21swapper/112:34:581
228699940,4rtkit-daemon2285-21rtkit-daemon09:41:111
228699940,4rtkit-daemon2285-21rtkit-daemon09:41:111
1683099907,76cyclictest0-21swapper/011:19:580
1683099896,35cyclictest0-21swapper/009:41:590
1683099896,35cyclictest0-21swapper/009:41:580
16831998843,33cyclictest0-21swapper/108:01:591
16830998712,68cyclictest0-21swapper/008:56:000
228699850,5rtkit-daemon2285-21rtkit-daemon11:56:241
16830998417,60cyclictest0-21swapper/010:57:580
16831998310,58cyclictest0-21swapper/108:40:001
228699820,5rtkit-daemon2285-21rtkit-daemon12:05:530
16831998212,57cyclictest0-21swapper/110:27:591
1539328130,26sleep10-21swapper/107:05:151
16831998012,51cyclictest0-21swapper/111:18:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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