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2025-12-06 - 11:00
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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 Sat Dec 06, 2025 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
290609911989,20cyclictest26-21ksoftirqd/122:05:241
290579911981,24cyclictest14-21ksoftirqd/023:30:150
290609910976,21cyclictest26-21ksoftirqd/120:45:231
290609910878,19cyclictest26-21ksoftirqd/123:55:141
290579910713,80cyclictest0-21swapper/022:55:130
290579910613,80cyclictest0-21swapper/022:35:220
290579910534,59cyclictest0-21swapper/022:25:190
290579910514,78cyclictest0-21swapper/019:15:150
290579910414,77cyclictest0-21swapper/021:15:160
290579910413,79cyclictest0-21swapper/023:25:170
290579910413,78cyclictest0-21swapper/022:05:220
290579910413,78cyclictest0-21swapper/020:15:130
290579910412,78cyclictest0-21swapper/000:15:130
290579910358,30cyclictest14-21ksoftirqd/021:55:130
290579910356,32cyclictest14-21ksoftirqd/023:20:150
290579910314,75cyclictest0-21swapper/019:40:140
290579910314,74cyclictest0-21swapper/019:55:140
290579910313,77cyclictest0-21swapper/000:30:150
290579910313,76cyclictest0-21swapper/023:10:130
290579910312,80cyclictest0-21swapper/019:30:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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