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2026-06-16 - 09:54
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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 Tue Jun 16, 2026 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3076023950,7sleep0171rcuc/019:05:150
3191028629,47sleep10-21swapper/119:08:151
32256997635,36cyclictest26-21ksoftirqd/119:38:121
248592750,9sleep126-21ksoftirqd/123:20:001
3224999727,57cyclictest19766-21apt-get23:05:130
32249997135,30cyclictest14-21ksoftirqd/023:35:270
32256997026,39cyclictest26-21ksoftirqd/100:30:361
32249996942,21cyclictest503-21snmpd00:21:030
32249996941,21cyclictest3965-21apt-get20:50:110
32249996941,21cyclictest3965-21apt-get20:50:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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