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2025-12-26 - 00:52
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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 rack3slot6.osadl.org (updated Thu Dec 25, 2025 12:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
106929910667,28cyclictest26-21ksoftirqd/112:30:151
106929910659,35cyclictest26-21ksoftirqd/109:10:161
106879910577,18cyclictest14-21ksoftirqd/010:20:160
106929910013,68cyclictest0-21swapper/108:25:101
10692999916,60cyclictest0-21swapper/111:15:131
10692999713,63cyclictest0-21swapper/109:00:141
10692999713,63cyclictest0-21swapper/109:00:131
10687999616,28cyclictest0-21swapper/012:05:110
10692999541,33cyclictest26-21ksoftirqd/111:50:141
10692999540,40cyclictest26-21ksoftirqd/112:00:151
10692999512,60cyclictest0-21swapper/112:25:151
10692999512,60cyclictest0-21swapper/112:25:141
10692999414,62cyclictest0-21swapper/109:20:121
10692999413,24cyclictest0-21swapper/110:05:151
10692999412,59cyclictest0-21swapper/108:50:231
10692999411,61cyclictest0-21swapper/108:30:131
10687999452,28cyclictest14-21ksoftirqd/008:20:160
1069299937,61cyclictest379-21chrt11:10:121
10692999213,63cyclictest0-21swapper/110:50:241
10692999213,58cyclictest0-21swapper/110:40:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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