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2026-08-01 - 20:45
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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 Sat Aug 01, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
75439910368,24cyclictest18061-21diskmemload09:10:120
7543999969,20cyclictest0-21swapper/012:15:160
7543999966,19cyclictest14-21ksoftirqd/011:20:140
754399986,79cyclictest23260-21apt-get12:25:170
7543999567,18cyclictest14-21ksoftirqd/009:50:140
7543999567,16cyclictest14-21ksoftirqd/008:50:130
7543999463,20cyclictest14-21ksoftirqd/008:15:150
7543999263,18cyclictest14-21ksoftirqd/010:40:260
7543999262,19cyclictest14-21ksoftirqd/009:00:130
7543999262,19cyclictest14-21ksoftirqd/009:00:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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