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2026-01-09 - 04:54
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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 Fri Jan 09, 2026 00:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
269749912449,61cyclictest500-21snmpd19:55:100
269749912291,21cyclictest14-21ksoftirqd/020:05:140
269769911178,21cyclictest26-21ksoftirqd/119:45:141
269769911071,26cyclictest26-21ksoftirqd/120:35:131
269749910671,21cyclictest0-21swapper/021:15:110
269749910668,25cyclictest14-21ksoftirqd/020:20:110
269769910462,30cyclictest26-21ksoftirqd/122:35:221
269749910431,62cyclictest0-21swapper/020:40:150
269769910361,30cyclictest26-21ksoftirqd/119:30:131
269749910313,78cyclictest0-21swapper/023:15:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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