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2025-11-19 - 08:37
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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 Wed Nov 19, 2025 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81799912392,18cyclictest14-21ksoftirqd/023:10:240
81849911273,27cyclictest26-21ksoftirqd/122:20:171
81849910766,31cyclictest26-21ksoftirqd/121:20:141
81799910777,19cyclictest14-21ksoftirqd/019:25:150
81799910613,77cyclictest0-21swapper/022:15:140
81799910612,79cyclictest0-21swapper/021:30:170
81799910612,78cyclictest0-21swapper/023:20:140
81799910164,25cyclictest14-21ksoftirqd/020:50:170
81799910066,22cyclictest14-21ksoftirqd/022:00:170
8184999947,38cyclictest26-21ksoftirqd/121:55:141
8179999912,28cyclictest0-21swapper/021:00:150
8184999850,34cyclictest26-21ksoftirqd/120:45:171
8184999740,45cyclictest26-21ksoftirqd/123:35:181
8184999611,68cyclictest0-21swapper/122:30:151
8179999665,18cyclictest0-21swapper/022:40:150
8184999511,64cyclictest0-21swapper/119:30:181
8184999436,43cyclictest26-21ksoftirqd/122:50:141
8184999413,64cyclictest0-21swapper/122:35:141
8184999411,66cyclictest0-21swapper/123:10:241
8179999415,65cyclictest0-21swapper/021:40:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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