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2025-11-10 - 04:01
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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 10 highest latencies:
System rack3slot6.osadl.org (updated Mon Nov 10, 2025 00:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
255049912997,17cyclictest504-21snmpd22:45:160
255049912012,92cyclictest0-21swapper/022:55:120
255049911682,21cyclictest14-21ksoftirqd/023:05:190
255049911281,21cyclictest14-21ksoftirqd/020:40:170
255049911033,64cyclictest0-21swapper/000:15:150
255049910611,79cyclictest0-21swapper/019:20:140
255049910574,19cyclictest14-21ksoftirqd/020:25:150
255049910511,80cyclictest0-21swapper/022:50:140
255049910510,81cyclictest0-21swapper/022:30:160
255049910474,19cyclictest14-21ksoftirqd/023:40:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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