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2025-12-07 - 11:32
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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 rackbslot7.osadl.org (updated Sun Dec 07, 2025 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2851921289,90sleep128529-21munin-run19:08:261
28658991102,88cyclictest17592-21apt-get21:33:381
1494421090,7sleep00-21swapper/021:28:260
27736210711,67sleep227766-21uname19:04:072
286589910511,83cyclictest11803-21apt-get19:53:441
502821040,6sleep30-21swapper/322:08:273
28658991046,74cyclictest1749-21modprobe23:58:291
286549910327,45cyclictest15-21ksoftirqd/023:23:450
286589910241,9cyclictest0-21swapper/120:43:231
286589910241,9cyclictest0-21swapper/120:43:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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