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2026-09-02 - 14:44
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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 Wed Sep 02, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32225210646,17sleep00-21swapper/007:08:040
236232920,5chrt22538-21/usr/sbin/munin08:10:361
3239828831,44sleep10-21swapper/107:09:241
32583998049,10cyclictest14-21ksoftirqd/011:15:140
32590997759,11cyclictest26-21ksoftirqd/111:45:101
199152750,5sleep10-21swapper/108:00:341
171352730,6sleep0171rcuc/012:25:340
3258399706,56cyclictest25482-21apt-get09:50:130
3258399705,56cyclictest3891-21apt-get10:20:120
208112690,7sleep020814-21grep09:35:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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