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2026-09-07 - 21:10
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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 Mon Sep 07, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
908821000982,12sleep10-21swapper/107:06:231
948899890809,48cyclictest0-21swapper/107:11:071
948799815736,51cyclictest0-21swapper/007:11:070
89962493469,16sleep00-21swapper/007:05:270
948799490402,16cyclictest24770-21ssh09:16:090
948899341273,25cyclictest0-21swapper/109:16:091
94879912616,103cyclictest0-21swapper/007:58:000
94879912613,24cyclictest0-21swapper/010:42:590
2286991020,3rtkit-daemon2285-21rtkit-daemon12:20:441
91921000,30sleep0917-21timerandwakeup12:30:240
9487999616,63cyclictest0-21swapper/008:26:590
228699960,4rtkit-daemon2285-21rtkit-daemon09:53:321
948799936,30cyclictest0-21swapper/010:11:310
948799908,33cyclictest0-21swapper/009:10:260
948799905,32cyclictest0-21swapper/010:05:010
9487999014,63cyclictest0-21swapper/012:17:590
9487998915,28cyclictest0-21swapper/009:36:150
948799887,34cyclictest0-21swapper/009:50:010
9487998814,28cyclictest0-21swapper/009:40:180
9487998810,23cyclictest0-21swapper/007:25:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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