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2026-03-17 - 04:06
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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 Tue Mar 17, 2026 00:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
276419912517,31cyclictest0-21swapper/023:40:120
276419911915,35cyclictest0-21swapper/020:45:130
276419911913,34cyclictest0-21swapper/019:15:120
27641991189,40cyclictest247312sleep020:30:110
276419911752,21cyclictest14-21ksoftirqd/021:30:130
276419911715,33cyclictest0-21swapper/023:05:130
182321170,5chrt1052-21/usr/sbin/munin19:25:301
276419911614,33cyclictest0-21swapper/019:55:120
276419911613,35cyclictest0-21swapper/000:05:100
276419911515,36cyclictest0-21swapper/019:45:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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