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2025-12-10 - 08:53
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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 rackfslot7.osadl.org (updated Wed Dec 10, 2025 00:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
158954998224,39cyclictest1-21systemd23:45:017
158954997616,21cyclictest241436-21munin-run21:35:017
158950996911,19cyclictest0-21swapper/520:10:195
158954996828,39cyclictest0-21swapper/700:14:267
15895499679,38cyclictest310070-21awk23:35:147
15895499668,0cyclictest0-21swapper/721:10:087
15895499667,59cyclictest192808-21apt-get20:10:017
158954996628,19cyclictest0-21swapper/700:27:037
158954996627,39cyclictest0-21swapper/720:42:157
15895499657,39cyclictest197454-21meminfo20:15:227
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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